論文 - 阿部　匡伸

コードブックマッピングによる狭帯域音声から広帯域音声の生成法 査読

吉田由紀, 阿部匡伸

電子情報通信学会論文誌. D-II   J78-D-II ( 3 )   391 - 399   1995年3月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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Explicit Prosody Control to Realize Discourse Focus in End-to-End Text-to-Speech

Takumi WADA, Sunao HARA, Masanobu ABE

IEEE International Workshop on Machine Learning for Signal Processing   2024年9月

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Speech Synthesis Using Ambiguous Inputs from Wearable Keyboards 査読

Matsuri Iwasaki, Sunao Hara, Masanobu Abe

Proc. of APSIPA Annual Summit and Conference   2023年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Sound map of urban areas recorded by smart devices: case study at Okayama and Kurashiki 招待 査読

Sunao Hara, Masanobu Abe

Proc. of the 52nd International Congress and Exposition on Noise Control Engineering   2023年8月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Speech-Emotion Control for Text-To-Speech in Spoken Dialogue Systems Using Voice Conversion and x-Vector Embedding 査読

Shunichi Kohara, Sunao Hara, Masanobu Abe

Proc. of APSIPA Annual Summit and Conference   2023年8月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Predictions for sound events and soundscape impressions from environmental sound using deep neural networks 招待 査読

Sunao Hara, Masanobu Abe

Proc. of the 52nd International Congress and Exposition on Noise Control Engineering   2023年8月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Prediction method of Soundscape Impressions using Environmental Sounds and Aerial Photographs 査読 国際誌

Yusuke Ono, Sunao Hara, Masanobu Abe

2022 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC)   1222 - 1227   2022年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

DOI： 10.23919/apsipaasc55919.2022.9980290

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その他リンク： https://arxiv.org/abs/2209.04077

Incremental Audio Scene Classifier Using Rehearsal-Based Strategy 査読

Ibnu Daqiqil Id, Masanobu Abe, Sunao Hara

IEEE Proc. of 11th Global Conference on Consumer Electronics   2022年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Speech-Like Emotional Sound Generation Using WaveNet 査読

Kento Matsumoto, Sunao Hara, Masanobu Abe

IEICE Transactions on Information and Systems   E105.D ( 9 )   1581 - 1589   2022年9月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Institute of Electronics, Information and Communications Engineers (IEICE)  

In this paper, we propose a new algorithm to generate Speech-like Emotional Sound (SES). Emotional expressions may be the most important factor in human communication, and speech is one of the most useful means of expressing emotions. Although speech generally conveys both emotional and linguistic information, we have undertaken the challenge of generating sounds that convey emotional information alone. We call the generated sounds "speech-like," because the sounds do not contain any linguistic information. SES can provide another way to generate emotional response in human-computer interaction systems. To generate "speech-like" sound, we propose employing WaveNet as a sound generator conditioned only by emotional IDs. This concept is quite different from the WaveNet Vocoder, which synthesizes speech using spectrum information as an auxiliary feature. The biggest advantage of our approach is that it reduces the amount of emotional speech data necessary for training by focusing on non-linguistic information. The proposed algorithm consists of two steps. In the first step, to generate a variety of spectrum patterns that resemble human speech as closely as possible, WaveNet is trained with auxiliary mel-spectrum parameters and Emotion ID using a large amount of neutral speech. In the second step, to generate emotional expressions, WaveNet is retrained with auxiliary Emotion ID only using a small amount of emotional speech. Experimental results reveal the following: (1) the two-step training is necessary to generate the SES with high quality, and (2) it is important that the training use a large neutral speech database and spectrum information in the first step to improve the emotional expression and naturalness of SES.

DOI： 10.1587/transinf.2021edp7236

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その他リンク： https://www.webofscience.com/wos/woscc/full-record/WOS:000852731400008

Concept drift adaptation for audio scene classification using high-level features 査読 国際誌

Ibnu Daqiqil Id, Masanobu Abe, Sunao Hara

2022 IEEE International Conference on Consumer Electronics (ICCE)   2022年1月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

DOI： 10.1109/icce53296.2022.9730332

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Acoustic Scene Classifier Based on Gaussian Mixture Model in the Concept Drift Situation 査読 国際誌

Ibnu Daqiqil Id, Masanobu Abe, Sunao Hara

Advances in Science, Technology and Engineering Systems Journal   6 ( 5 )   167 - 176   2021年9月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ASTES Journal  

DOI： 10.25046/aj060519

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Phonetic and Prosodic Information Estimation from Texts for Genuine Japanese End-to-End Text-to-Speech 査読 国際誌

Naoto Kakegawa, Sunao Hara, Masanobu Abe, Yusuke Ijima

Interspeech 2021   126 - 130   2021年8月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：ISCA  

The biggest obstacle to develop end-to-end Japanese text-to-speech (TTS) systems is to estimate phonetic and prosodic information (PPI) from Japanese texts. The following are the reasons: (1) the Kanji characters of the Japanese writing system have multiple corresponding pronunciations, (2) there is no separation mark between words, and (3) an accent nucleus must be assigned at appropriate positions. In this paper, we propose to solve the problems by neural machine translation (NMT) on the basis of encoder-decoder models, and compare NMT models of recurrent neural networks and the Transformer architecture. The proposed model handles texts on token (character) basis, although conventional systems handle them on word basis. To ensure the potential of the proposed approach, NMT models are trained using pairs of sentences and their PPIs that are generated by a conventional Japanese TTS system from 5 million sentences. Evaluation experiments were performed using PPIs that are manually annotated for 5,142 sentences. The experimental results showed that the Transformer architecture has the best performance, with 98.0% accuracy for phonetic information estimation and 95.0% accuracy for PPI estimation. Judging from the results, NMT models are promising toward end-to-end Japanese TTS.

DOI： 10.21437/interspeech.2021-914

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Model architectures to extrapolate emotional expressions in DNN-based text-to-speech 査読

Katsuki Inoue, Sunao Hara, Masanobu Abe, Nobukatsu Hojo, Yusuke Ijima

Speech Communication   126   35 - 43   2021年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.specom.2020.11.004

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Module Comparison of Transformer-TTS for Speaker Adaptation based on Fine-tuning 査読

Katsuki Inoue, Sunao Hara, Masanobu Abe

APSIPA Annual Summit and Conference 2020   826 - 830   2020年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Concept Drift Adaptation for Acoustic Scene Classifier Based on Gaussian Mixture Model 査読

Ibnu Daqiqil Id, Masanobu Abe, Sunao Hara

2020 IEEE REGION 10 CONFERENCE (TENCON)   450 - 455   2020年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

DOI： 10.1109/tencon50793.2020.9293766

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Controlling the Strength of Emotions in Speech-Like Emotional Sound Generated by WaveNet 査読

Kento Matsumoto, Sunao Hara, Masanobu Abe

Interspeech 2020   3421 - 3425   2020年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：ISCA  

DOI： 10.21437/interspeech.2020-2064

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Semi-Supervised Speaker Adaptation for End-to-End Speech Synthesis with Pretrained Models 査読

Katsuki Inoue, Sunao Hara, Masanobu Abe, Tomoki Hayashi, Ryuichi Yamamoto, Shinji Watanabe

ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)   7634 - 7638   2020年5月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

DOI： 10.1109/icassp40776.2020.9053371

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DNN-based Voice Conversion with Auxiliary Phonemic Information to Improve Intelligibility of Glossectomy Patients' Speech 査読

Hiroki Murakami, Sunao Hara, Masanobu Abe

Proceedings of APSIPA Annual Summit and Conference 2019   138 - 142   2019年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Speech-like Emotional Sound Generator by WaveNet 査読

Kento Matsumoto, Sunao Hara, Masanobu Abe

Proceedings of APSIPA Annual Summit and Conference 2019   143 - 147   2019年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Naturalness Improvement Algorithm for Reconstructed Glossectomy Patient's Speech Using Spectral Differential Modification in Voice Conversion. 査読

Hiroki Murakami, Sunao Hara, Masanobu Abe, Masaaki Sato, Shogo Minagi

Interspeech 2018, 19th Annual Conference of the International Speech Communication Association, Hyderabad, India, 2-6 September 2018.   2464 - 2468   2018年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：ISCA  

DOI： 10.21437/Interspeech.2018-1239

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Sound sensing using smartphones as a crowdsourcing approach 査読

Sunao Hara, Asako Hatakeyama, Shota Kobayashi, Masanobu Abe

Proceedings of APSIPA Annual Summit and Conference 2017   2017年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.1109/apsipa.2017.8282238

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Speaker Dependent Approach for Enhancing a Glossectomy Patient’s Speech via GMM-Based Voice Conversion 査読

Kei Tanaka, Sunao Hara, Masanobu Abe, Masaaki Sato, Shogo Minagi

Proc. of Interspeech 2017   2017-   3384 - 3388   2017年8月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.21437/Interspeech.2017-841

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New monitoring scheme for persons with dementia through monitoring-area adaptation according to stage of disease 査読

Shigeki Kamada, Yuji Matsuo, Sunao Hara, Masanobu Abe

Proceedings of ACM SIGSPATIAL Workshop LocalRec 2017   2017年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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An investigation to transplant emotional expressions in DNN-based TTS synthesis 査読

Katsuki Inoue, Sunao Hara, Masanobu Abe

Proceedings of APSIPA Annual Summit and Conference 2017   2017年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.1109/APSIPA.2017.8282231

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Prediction of subjective assessments for a noise map using deep neural networks 査読

Shota Kobayashi, Sunao Hara, Masanobu Abe

Proceedings of UbiComp/ISWC 2017   2017年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Enhancing a Glossectomy Patient’s Speech via GMM-based Voice Conversion 査読

Kei Tanaka, Sunao Hara, Masanobu Abe, Shogo Minagi

APSIPA Annual Summit and Conference 2016   2016年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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A classification method for crowded situation using environmental sounds based on Gaussian mixture model-universal background model 査読

Tomoyasu Tanaka, Sunao Hara, Masanobu Abe

The Journal of the Acoustical Society of America   140 ( 4 )   3110 - 3110   2016年10月

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Safety vs. Privacy: User preferences from the monitored and monitoring sides of a monitoring system 査読

Shigeki Kamada, Sunao Hara, Masanobu Abe

UbiComp 2016 Adjunct - Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing   101 - 104   2016年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Association for Computing Machinery, Inc  

In this study, in order to develop a monitoring system that takes into account privacy issues, we investigated user preferences in terms of the monitoring and privacy protec-tion levels. The people on the monitoring side wanted the monitoring system to allow them to monitor in detail. Con-versely, it was observed for the people being monitored that the more detailed the monitoring, the greater the feelings of being surveilled intrusively. Evaluation experiments were performed using the location data of three people in differ-ent living areas. The results of the experiments show that it is possible to control the levels of monitoring and privacy protection without being affected by the shape of a living area by adjusting the quantization level of location informa-tion. Furthermore, it became clear that the granularity of location information satisfying the people on the monitored side and the monitoring side is different.

DOI： 10.1145/2968219.2971412

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LiBS: Lifelog browsing system to support sharing of memories 査読

Atsuya Namba, Sunao Hara, Masanobu Abe

UbiComp 2016 Adjunct - Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing   165 - 168   2016年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Association for Computing Machinery, Inc  

We propose a lifelog browsing system through which users can share memories of their experiences with other users. Most importantly, by using global positioning system data and time stamps, the system simultaneously displays a variety of log information in a time-synchronous manner. This function empowers users with not only an easy interpretation of other users' experiences but also nonverbal notifications. Shared information on this system includes photographs taken by users, Google street views, shops and restaurants on the map, daily weather, and other items relevant to users' interests. In evaluation experiments, users preferred the proposed system to conventional photograph albums and maps for explaining and sharing their experiences. Moreover, through displayed information, the listeners found out their interest items that had not been mentioned by the speakers.

DOI： 10.1145/2968219.2971401

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SOUND COLLECTION SYSTEMS USING A CROWDSOURCING APPROACH TO CONSTRUCT SOUND MAP BASED ON SUBJECTIVE EVALUATION 査読

Sunao Hara, Shota Kobayashi, Masanobu Abe

2016 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA & EXPO WORKSHOPS (ICMEW)   2016年7月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

This paper presents a sound collection system that uses crowdsourcing to gather information for visualizing area characteristics. First, we developed a sound collection system to simultaneously collect physical sounds, their statistics, and subjective evaluations. We then conducted a sound collection experiment using the developed system on 14 participants. We collected 693,582 samples of equivalent Aweighted loudness levels and their locations, and 5,935 samples of sounds and their locations. The data also include subjective evaluations by the participants. In addition, we analyzed the changes in sound properties of some areas before and after the opening of a large-scale shopping mall in a city. Next, we implemented visualizations on the server system to attract users' interests. Finally, we published the system, which can receive sounds from any Android smartphone user. The sound data were continuously collected and achieved a specified result.

DOI： 10.1109/ICMEW.2016.7574694

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Structure of a New Palatal Plate and the Artificial Tongue for Articulation Disorder in a Patient with Subtotal Glossectomy 査読

Ken-ichi Kozaki, Shigehisa Kawakami, Takayuki Konishi, Keiji Ohta, Jitsuro Yano, Tomoo Onoda, Hiroshi Matsumoto, Nobuyoshi Mizukawa, Yoshihiro Kimata, Kazunori Nishizaki, Seiji Iida, Akio Gofuku, Masanobu Abe, Shogo Minagi

ACTA MEDICA OKAYAMA   70 ( 3 )   205 - 211   2016年6月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：OKAYAMA UNIV MED SCHOOL  

A palatal augmentation prosthesis (PAP) is used to facilitate improvement in the speech and swallowing functions of patients with tongue resection or tongue movement disorders. However, a PAP's effect is limited in cases where articulation disorder is severe due to wide glossectomy and/or segmental mandibulectomy. In this paper, we describe speech outcomes of a patient with an articulation disorder following glossectomy and segmental mandibulectomy. We used a palatal plate (PP) based on a PAP, along with an artificial tongue (KAT). Speech improvement was evaluated by a standardized speech intelligibility test consisting of 100 syllables. The speech intelligibility score was significantly higher when the patient wore both the PP and KAT than when he wore neither (p=0.013). The conversational intelligibility score was significantly improved with the PP and KAT than without PP and KAT (p=0.024). These results suggest that speech function can be improved in patients with hard tissue defects with segmental mandibulectomy using both a PP and a KAT. The nature of the design of the PP and that of the KAT will allow these prostheses to address a wide range of tissue defects.

DOI： 10.18926/AMO/54420

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A Spoken Dialog System with Redundant Response to Prevent User Misunderstanding 査読

Masaki Yamaoka, Sunao Hara, Masanobu Abe

2015 ASIA-PACIFIC SIGNAL AND INFORMATION PROCESSING ASSOCIATION ANNUAL SUMMIT AND CONFERENCE (APSIPA)   229 - 232   2015年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

We propose a spoken dialog strategy for car navigation systems to facilitate safe driving. To drive safely, drivers need to concentrate on their driving; however, their concentration may be disrupted due to disagreement with their spoken dialog system. Therefore, we need to solve the problems of user misunderstandings as well as misunderstanding of spoken dialog systems. For this purpose, we introduced a driver workload level in spoken dialog management in order to prevent user misunderstandings. A key strategy of the dialog management is to make speech redundant if the driver's workload is too high in assuming that the user probably misunderstand the system utterance under such a condition. An experiment was conducted to compare performances of the proposed method and a conventional method using a user simulator. The simulator is developed under the assumption of two types of drivers: an experienced driver model and a novice driver model. Experimental results showed that the proposed strategies achieved better performance than the conventional one for task completion time, task completion rate, and user's positive speech rate. In particular, these performance differences are greater for novice users than for experienced users.

DOI： 10.1109/APSIPA.2015.7415511

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Extraction of Key Segments from Day-Long Sound Data 査読

Akinori Kasai, Sunao Hara, Masanobu Abe

HCI INTERNATIONAL 2015 - POSTERS' EXTENDED ABSTRACTS, PT I   528   620 - 626   2015年8月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：SPRINGER-VERLAG BERLIN  

We propose a method to extract particular sound segments from the sound recorded during the course of a day in order to provide sound segments that can be used to facilitate memory. To extract important parts of the sound data, the proposed method utilizes human behavior based on a multisensing approach. To evaluate the performance of the proposed method, we conducted experiments using sound, acceleration, and global positioning system data collected by five participants for approximately two weeks. The experimental results are summarized as follows: (1) various sounds can be extracted by dividing a day into scenes using the acceleration data; (2) sound recorded in unusual places is preferable to sound recorded in usual places; and (3) speech is preferable to nonspeech sound.

DOI： 10.1007/978-3-319-21380-4_105

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Algorithm to Estimate a Living Area Based on Connectivity of Places with Home 査読

Yuji Matsuo, Sunao Hara, Masanobu Abe

HCI INTERNATIONAL 2015 - POSTERS' EXTENDED ABSTRACTS, PT II   529   570 - 576   2015年8月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：SPRINGER-VERLAG BERLIN  

We propose an algorithm to estimate a person's living area using his/her collected Global Positioning System (GPS) data. The most important feature of the algorithm is the connectivity of places with a home, i.e., a living area must consist of a home, important places, and routes that connect them. This definition is logical because people usually go to a place from home, and there can be several routes to that place. Experimental results show that the proposed algorithm can estimate living area with a precision of 0.82 and recall of 0.86 compared with the grand truth established by users. It is also confirmed that the connectivity of places with a home is necessary to estimate a reasonable living area.

DOI： 10.1007/978-3-319-21383-5_95

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Sound collection and visualization system enabled participatory and opportunistic sensing approaches 査読

Sunao Hara, Masanobu Abe, Noboru Sonehara

2015 IEEE International Conference on Pervasive Computing and Communication Workshops, PerCom Workshops 2015   390 - 395   2015年6月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Institute of Electrical and Electronics Engineers Inc.  

This paper presents a sound collection system to visualize environmental sounds that are collected using a crowd-sourcing approach. An analysis of physical features is generally used to analyze sound properties
however, human beings not only analyze but also emotionally connect to sounds. If we want to visualize the sounds according to the characteristics of the listener, we need to collect not only the raw sound, but also the subjective feelings associated with them. For this purpose, we developed a sound collection system using a crowdsourcing approach to collect physical sounds, their statistics, and subjective evaluations simultaneously. We then conducted a sound collection experiment using the developed system on ten participants. We collected 6,257 samples of equivalent loudness levels and their locations, and 516 samples of sounds and their locations. Subjective evaluations by the participants are also included in the data. Next, we tried to visualize the sound on a map. The loudness levels are visualized as a color map and the sounds are visualized as icons which indicate the sound type. Finally, we conducted a discrimination experiment on the sound to implement a function of automatic conversion from sounds to appropriate icons. The classifier is trained on the basis of the GMM-UBM (Gaussian Mixture Model and Universal Background Model) method. Experimental results show that the F-measure is 0.52 and the AUC is 0.79.

DOI： 10.1109/PERCOMW.2015.7134069

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Extracting Daily Patterns of Human Activity Using Non-Negative Matrix Factorization 査読

Masanobu Abe, Akihiko Hirayama, Sunao Hara

2015 IEEE INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS (ICCE)   36 - 39   2015年1月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

This paper presents an algorithm to mine basic patterns of human activities on a daily basis using non-negative matrix factorization (NMF). The greatest benefit of the algorithm is that it can elicit patterns from which meanings can be easily interpreted. To confirm its performance, the proposed algorithm was applied to PC logging data collected from three occupations in offices. Daily patterns of software usage were extracted for each occupation. Results show that each occupation uses specific software in its own time period, and uses several types of software in parallel in its own combinations. Experiment results also show that patterns of 144 dimension vectors were compressible to those of 11 dimension vectors without degradation in occupation classification performance. Therefore, the proposed algorithm compressed basic software usage patterns to about one-tenth of their original dimensions while preserving the original information. Moreover, the extracted basic patterns showed reasonable interpretation of daily working patterns in offices.

DOI： 10.1109/ICCE.2015.7066309

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Sub-Band Text-to-Speech Combining Sample-Based Spectrum with Statistically Generated Spectrum 査読

Tadashi Inai, Sunao Hara, Masanobu Abe, Yusuke Ijima, Noboru Miyazaki, Hideyuki Mizuno

16TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION (INTERSPEECH 2015), VOLS 1-5   264 - 268   2015年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：ISCA-INT SPEECH COMMUNICATION ASSOC  

As described in this paper, we propose a sub-band speech synthesis approach to develop a high quality Text-to-Speech (TTS) system: a sample-based spectrum is used in the high-frequency band and spectrum generated by HMM-based TTS is used in the low-frequency band. Herein, sample-based spectrum means spectrum selected from a phoneme database such that it is the most similar to spectrum generated by HMM-based speech synthesis. A key idea is to compensate over-smoothing caused by statistical procedures by introducing a sample-based spectrum, especially in the high-frequency band. Listening test results show that the proposed method has better performance than HMM-based speech synthesis in terms of clarity. It is at the same level as HMM-based speech synthesis in terms of smoothness. In addition, preference test results among the proposed method, HMM-based speech synthesis, and waveform speech synthesis using 80 min speech data reveal that the proposed method is the most liked.

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A Hybrid Text-to-Speech Based on Sub-Band Approach 査読

Takuma Inoue, Sunao Hara, Masanobu Abe

2014 ASIA-PACIFIC SIGNAL AND INFORMATION PROCESSING ASSOCIATION ANNUAL SUMMIT AND CONFERENCE (APSIPA)   2014年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

This paper proposes a sub-band speech synthesis approach to develop high-quality Text-to-Speech (TTS). For the low-frequency band and high-frequency band, Hidden Markov Model (HMM)-based speech synthesis and waveform -based speech synthesis are used, respectively. Both speech synthesis methods are widely known to show good performance and to have benefits and shortcomings from different points of view. One motivation is to apply the right speech synthesis method in the right frequency band. Experiment results show that in terms of the smoothness the proposed approach shows better performance than waveform -based speech synthesis, and in terms of the clarity it shows better than HMM-based speech synthesis. Consequently, the proposed approach combines the inherent benefits from both waveform-based speech synthesis and HMM-based speech synthesis.

DOI： 10.1109/APSIPA.2014.7041575

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イベントを比喩に用いた感情伝達法の検討 査読

濱野和人, 原直, 阿部匡伸

電子情報通信学会論文誌（レター,研究速報）   J97-D ( .12 )   1680 - 1683   2014年12月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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New Approach to Emotional Information Exchange: Experience Metaphor Based on Life Logs 査読

Masanobu Abe, Daisuke Fujioka, Kazuto Hamano, Sunao Hara, Rika Mochizuki, Tomoki Watanabe

2014 IEEE INTERNATIONAL CONFERENCE ON PERVASIVE COMPUTING AND COMMUNICATIONS WORKSHOPS (PERCOM WORKSHOPS)   191 - 194   2014年3月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

We are striving to develop a new communication technology based on individual experiences that can be extracted from life logs. We have proposed the "Emotion Communication Model" and confirmed that significant correlation exists between experience and emotion. As the second step, particularly addressing impressive places and events, this paper describes an investigation of the extent to which we can share emotional information with others through individuals' experiences. Subjective experiments were conducted using life log data collected during 7-47 months. Experiment results show that (1) impressive places are determined by the distance from home, visit frequency, and direction from home and that (2) positive emotional information is highly consistent among people (71.4%), but it is not true for negative emotional information. Therefore, experiences are useful as metaphors to express positive emotional information.

DOI： 10.1109/PerComW.2014.6815198

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クラウドソーシングによる環境音収集のためのスマートデバイス用アプリケーションの開発

原直, 笠井昭範, 阿部匡伸, 曽根原登

電子情報通信学会技術研究報告   Vol. 113 ( No. 479 )   29 - 34   2014年3月

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記述言語：日本語   掲載種別：研究論文（研究会，シンポジウム資料等）  

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Speech Synthesizer with F0 Changes in Response to Users’ Motion 査読

H. Handa, M. Abe, H. Kawakam

Proc. 8th International Conference on Humanized Systems   181 - 186   2012年8月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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構音障害支援と音声合成 (特集 不便の効用を活用するシステム) 招待

川上 浩司, 半田 久志, 阿部 匡伸

計測と制御   51 ( 8 )   765 - 770   2012年8月

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記述言語：日本語   掲載種別：学位論文（その他）   出版者・発行元：計測自動制御学会  

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J-GLOBAL

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A life log collecting system supported by smartphone to model higher-level human behaviors 査読

Masanobu Abe, Daisuke Fujioka, Hisashi Handa

Proceedings - 2012 6th International Conference on Complex, Intelligent, and Software Intensive Systems, CISIS 2012   665 - 670   2012年7月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

In this paper, we propose a system to collect human behavior in detail with higher-level tags such as attitude, accompanying-person, expenditure, tasks and so on. The system makes it possible to construct database to model higher-level human behaviors that are utilized in context-aware services. The system has two input methods
i.e., on-the-fly by a smartphone and post-processing by a PC browser. On the PC, users can interactively know where and when they were, which results in easily and accurately constructing human behavior database. To decrease numbers of operations, users' repetitions and similarity of among users are used. According to experiment results, the system successfully decreases operation time, higher-level tags are properly collected and behavior tendencies of the users are clearly captured. © 2012 Crown Copyright.

DOI： 10.1109/CISIS.2012.81

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モノの移動を考慮した屋内におけるユーザとモノの同時位置推定 査読

石原 達也, 中村 幸博, 武藤 伸洋, 阿部 匡伸, 下倉 健一朗

電子情報通信学会論文誌   J94-D ( 8 )   1434 - 1449   2011年8月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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ファインダと一体化した画像読み取りユニットにおける2 次元コード取得を題材とした操作性評価 査読

前田篤彦, 原謙治, 小林稔, 阿部匡伸

情報処理学会論文誌   52 ( 8 )   2484 - 2494   2011年8月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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"Life Portal": Challenge for an Information Access Scheme based on Life Logs 査読

Shin-ichiro Eitoku, Manabu Motegi, Rika Mochizuki, Takashi Yagi, Shin-yo Muto, Masanobu Abe

Proc. of HCI International 2011, LNCS 6772   11 - 20   2011年7月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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転倒転落事故の予防を目的としたみまもりベッドシステム 査読

茂木 学, 松村 成宗, 山田, 智広, 武藤, 伸洋, 金丸, 直義, 下倉, 健一朗, 阿部 匡伸, 大久保, 由美子, 森田 佳子, 葛西, 圭子, 山元, 友子, 落合 慈之

電子情報通信学会論文誌   J94-D ( No.6 )   1025 - 1038   2011年6月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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転倒転落事故予防に向けた入院患者の起き上がり動作分析 -第二報- 査読

茂木学, 松村成宗, 山田智広, 武藤伸洋, 金丸直義, 下倉健一郎, 阿部匡伸, 森田佳子, 葛西圭子

日本医療マネジメント学会雑誌   12 ( 1 )   25 - 29   2011年6月

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"ClearPlate" for Capturing Printed Information: A Scanner and Viewfinder in One Optical Unit 査読

Atsuhiko Maeda, Kenji Hara, Minoru Kobayashi, Masanobu Abe

29TH ANNUAL CHI CONFERENCE ON HUMAN FACTORS IN COMPUTING SYSTEMS   2737 - 2740   2011年5月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：ASSOC COMPUTING MACHINERY  

As it is becoming more common for various handheld devices to be equipped with a camera, applications that use image recognition are increasing. Therefore, improving the usability of these devices by enhancing their image capture characteristics is becoming more important. We present ClearPlate - a new optical unit for image capture. It has a physically transparent viewfinder through which the user can observe the target directly without offset; the framed image is captured by the built-in camera. We also present a user study that evaluates ClearPlate performance in the 2D barcode acquisition task. Results show that ClearPlate significantly outperforms the camera-phone-based approach with regard to 2D barcode acquisition.

DOI： 10.1145/1978942.1979346

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ClearPlate: An Optical Unit Combining a Scanner and a Viewfinder for an Image Capture Device 査読

Atsuhiko Maeda, Kenji Hara, Minoru Kobayashi, Masanobu Abe

IEEE INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS (ICCE 2011)   783 - 784   2011年1月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

We present ClearPlate-a new optical unit for an image capture device. It has a physically transparent viewfinder through which the user can observe the target directly without offset; the framed image is captured by the built-in camera. We also present a user study that evaluates ClearPlate performance in the 2D code acquisition task. Results show that ClearPlate significantly outperforms the camera-phone-based approach to 2D code acquisition.

DOI： 10.1109/ICCE.2011.5722862

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A location predictor based on dependencies between multiple lifelog data 査読

Masaaki Nishino, Yukihiro Nakamura, Takashi Yagi, Shinyo Muto, Masanobu Abe

Proceedings of the 2nd ACM SIGSPATIAL International Workshop on Location Based Social Networks, LBSN 2010 - Held in Conjunction with ACM SIGSPATIAL GIS 2010   11 - 18   2010年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

In this paper, we propose a method for predicting future locations of a person by exploiting the person's past lifelog data. To predict the future location of a person has many applications such as the delivery of information related to the predicted locations: information with limited lifetimes (sales in a supermarket), weather reports, and traffic reports. Most existing methods for prediction only use historical location data, thus they can only handle regular movements
irregular movements are not considered. Our method predicts future locations by using personal calendar entries in addition to GPS(Global positioning system) data. Using calendar entries makes it possible to predict the locations associated with the irregular events indicated by the entries. We make Dynamic Bayesian Networks models for integrating these different kinds of lifelog data so as to yield better predictions. In experiments on real data, our methods can predict irregular movements successfully even with long lead-times, while matching the accuracy of existing schemes in predicting usual movements. Copyright 2010 ACM.

DOI： 10.1145/1867699.1867702

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ネットワークロボットプラットフォームの実証実験による評価 査読

武藤伸洋, 下倉健一朗, 中村幸博, 手塚博久, 阿部匡伸

電子情報通信学会論文誌   J93-D ( 10 )   2240 - 2256   2010年10月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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音声合成のための韻律制御コマンド作成方法の検討 査読

水野理, 阿部匡伸

自然言語処理   17 ( 4 )   111 - 129   2010年7月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.5715/jnlp.17.4_111

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転倒転落事故予防に向けた入院患者の起き上がり動作分析 -第一報- 査読

平澤桂一, 松村成宗, 茂木学, 山田智広, 武藤伸洋, 金丸直義, 下倉健一郎, 阿部匡伸, 森田佳子, 葛西圭子

日本医療マネジメント学会雑誌   11 ( 1 )   31 - 36   2010年6月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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Twist&Tap: Text Entry for TV Remotes Using Easy-to-Learn Wrist Motion and Key Operation 査読

Ryosuke Aoki, Atsuhiko Maeda, Tomoki Watanabe, Minoru Kobayashi, Masanobu Abe

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS   56 ( 1 )   161 - 168   2010年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

We proposed "Twist&Tap" as a new text entry method for TV remotes. The method uses a combination of operations that are easy for the body to remember: multi-tap of the four directional keys and five level twist control of the wrist holding the remote in either clockwise or counterclockwise direction. Experiments confirm that Twist&Tap offers increased text entry speed, and that many of the subjects could achieve text entry speed close to that of the more commonly used Multi-tap interface after just 3 hours of use, in the condition where the users could not see the remote. Twist&Tap is thus an easy-to-learn eyes-free interface.(1).

DOI： 10.1109/TCE.2010.5439140

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“矢印タグ”を利用したテレビ用ウェブブラウザ・リンク選択方式 査読

前田篤彦, 稲垣博人, 小林稔, 阿部匡伸

情報処理学会論文誌   51 ( 2 )   346 - 355   2010年2月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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PERSONALIZED TV-PROGRAM RECOMMENDATIONS BASED ON LIFE LOG 査読

Yukihiro Nakamura, Tatsuaki Itou, Hirohisa Tezuka, Tatsuya Ishihara, Masanobu Abe

2010 DIGEST OF TECHNICAL PAPERS INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS ICCE   143 - 144   2010年1月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

To improve the quality and timeliness of TV program recommendations, a recommendation system that uses life log data such as browsing histories on WEB, locations visited, operation history of consumer electronics, and personal scheduler on PC is proposed. A subjective experiment shows that life log data is effective in improving the quality of program recommendations.

DOI： 10.1109/ICCE.2010.5418741

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A New Text Input Method for TV Remotes Using Tilt Sensor 査読

Ryosuke Aoki, Atsuhiko Maeda, Tomoki Watanabe, Minoru Kobayashi, Masanobu Abe

2010 DIGEST OF TECHNICAL PAPERS INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS ICCE   205 - 206   2010年1月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

We aim to make it easier and more comfortable to input text via a TV remote control device. Our proposal is a character input method based on detecting the tilt of the device. Users can easily acquire reflex-level typing skills. Experiments confirm the feasibility of the method..

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身体活動ならびに知的活動の増加が高齢者の認知機能に及ぼす影響 査読

谷口優, 小宇佐陽子, 新開省二, 上松志乃, 永沢文子, 青木政勝, 武藤伸洋, 阿部匡伸, 深谷太郎, 渡辺直紀

日本公衆衛生雑誌   56 ( 11 )   784 - 794   2009年11月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.11236/jph.56.11_784

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転倒転落事故予防に向けた入院患者の起き上がり動作分析 査読

茂木学, 平澤桂一, 松村成宗, 山田智広, 武藤伸洋, 金丸直義, 下倉健一郎, 阿部匡伸, 大久保由美子, 森田佳子, 葛西圭子, 山元友子, 落合慈之

医療の質・安全学会誌   4 ( 1 )   86 - 94   2009年5月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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Preferred Color Reproduction Based on Personal Histogram Transformation 査読

Kenji Hara, Atsuhiko Maeda, Hirohito Inagaki, Minoru Kobayashi, Masanobu Abe

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS   55 ( 2 )   855 - 863   2009年5月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

We propose a facial color beautification method for video communication. The video-captured Ace often disappoints its, especially the subjects themselves, because the lighting environment is often poor. Inadequate lighting makes the face look depressed or tired. The best solution is illuminating the face directly with good light, but it is, not always possible to realize the perfect environment in everyday situations. Our solution is to retouch the captured video. Our method identifies the distribution of skin color and the eye luminance of a detected face, and converts the color distribution of the entire image by histogram tran formation. This method provides three strong points, which are 1) converting video in real-time, 2) beautifying the facial color even if it is captured under inadequate light, and 3) creating a variety of face "styles" by controlling the transformation parameters. We conduct a computational performace evaluation, which shows that our method provides real-time video processing performance. Moreover, we also conduct a user study to reveal the diversity of user preferences and the method's effectiveness in terms of impression improvement. The user study indicates that our method is effective even though user preferences vary widely.(1)

DOI： 10.1109/TCE.2009.5174466

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A Place Prediction Algorithm Based on Time-Sensitive Frequent Patterns 査読

M. Nishino, S. Seko, T. Yamada, M. Motegi, S. Muto, M. Abe

Proc. Pervasive 2009   2009年5月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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An Ontological Approach to Lifelog Representation for Disclosure Control 査読

Truong Thi Thu Hien, Shin-ichiro Eitoku, Tomohiro Yamada, Shin-yo Muto, Masanobu Abe

ISCE: 2009 IEEE 13TH INTERNATIONAL SYMPOSIUM ON CONSUMER ELECTRONICS, VOLS 1 AND 2   932 - 936   2009年5月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

In services using lifelog collected continuously and over a long period of time, disclosure control is essential in order to deal with the privacy because this lifelog includes confidential information which users are unwilling to disclose freely. This paper proposes an ontology model for disclosure control needed to handle each user's lifelog. The user is able to easily set disclosure rules on his/her diverse data collected from various data sources. Features of the proposed model are as follows: (1) Values can be differentiated by their context, (2) Various time expressions can be handled and (3) Disclosure attribute is set on each lifelog item (fine-grained control). We show an example of implementation and the result of experiments using an implemented system.

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An Algorithm to Estimate the Level of Friendship Based on the Mode of Transportation and the Time Spent Sharing Movement Tracks 査読

S. Seko, M. Nishino, M. Motegi, T. Yamada, S. Muto, M. Abe

Proc. Pervasive 2009   2009年5月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Arrow Tag: A Direction-Key-Based Technique for Rapidly Selecting Hyperlinks While Gazing at a Screen 査読

Atsuhiko Maeda, Hirohito Inagaki, Masanobu Abe

CHI2009: PROCEEDINGS OF THE 27TH ANNUAL CHI CONFERENCE ON HUMAN FACTORS IN COMPUTING SYSTEMS, VOLS 1-4   1025 - 1028   2009年4月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：ASSOC COMPUTING MACHINERY  

Television sets and video game consoles equipped with a web browser have appeared, and we are now able to browse web pages on television screens. However, existing navigation techniques are too difficult in this situation. In this paper, we propose Arrow Tag,, a new link selection technique for web browsers on TV. In this technique, sequences of arrow signs called Arrow Tags are assigned to the links of the web pages, so users can select the links by pushing the four direction keys a few times, while keeping her/his gaze fixed on the television screen. User studies show that At-row Tag significantly outperforms the conventional techniques of Focus Move and Number Tag. Moreover, most participants preferred Arrow Tag over either Focus Move or Number Tag.

DOI： 10.1145/1518701.1518857

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A Life Log Collector Integrated with a Remote-Controller for Enabling User Centric Services 査読

Masanobu Abe, Yuji Morinishi, Atsuhiko Maeda, Masakatsu Aoki, Hirohito Inagaki

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS   55 ( 1 )   295 - 302   2009年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

In this paper, we propose a life logger integrated with a remote controller, which is a personal device. It uses several sensors to collect the history of the user's control of consumer appliances as well as his/her actions, stores all data in real time before sending it to PCs or servers, and is small enough to carry at all times. The aim of data integration is to acquire the user's context from his/her actions; personalised services are then provided that suit the context. We develop a prototype and evaluate its performance. The prototype uses Arrow Tags to act as a remote controller for Internet surfing via a TV screen; we designed Arrow Tags to allow the easy selection of any link currently shown by pushing the direction keys, the user can keep his/her gaze fixed on the television screen. Experiments show that Arrow Tag makes it possible for users to easily and comfortably select web page links. To support context mining, the prototype uses our algorithm that can estimate transportation modes from the outputs of GPS and acceleration sensors. Tests show that transportation mode estimation is about 95% accurate. Judging from the experiments results, we can conclude that the life logger, integrated with a remote controller, has the potential to stimulate the development of many context-aware services(1).

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Coool: A Life Log Collector Integrated with a Remote-Controller for Enabling User Centric Services 査読

Masanobu Abe, Yuji Morinishi, Atsuhiko Maeda, Masakastu Aoki, Hirohito Inagaki

2009 IEEE INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS   ( P.2-3 )   27 - 28   2009年1月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

We aim to provide services that properly take account of the user's interests and/or profile. To achieve this goal, we propose a new device that collects the user's actions and sends them to a PC to be stored as a life log for estimating the user's interests and/or profile. Based on the idea that the user's interaction with consumer electronic appliances provides important information about the user's interests, the device includes a remote controller and several sensors. Experiments show that the device offers good performance both as a remote controller and as a life log collector.

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Intuitive Appliance Control System with ID Acquisition 査読

Yoshio Nakadai, Toshiharu Morizumi, Ushio Shibusawa, Youichi Takashima, Masanobu Abe

2009 IEEE INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS   ( 3.1-3 )   203 - 204   2009年1月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

This paper describes an appliance control system that uses the IDs of the user and the appliances. The system uses knowledge of appliance functionality and the user's need to simplify and unify the control processes performed by the user. Usability experiments conducted on a presentation system show the advantage of the system.

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脈拍数の時間変化特徴量を用いた平常/非平常状態判定法の高度化(ライフログ活用技術,オフィス情報システム,マルチメディアシステム,マルチメディア通信,IP放送/映像伝送,一般)

村山 卓弥, 手塚 博久, 武藤 伸洋, 阿部 匡伸

映像情報メディア学会技術報告   33   91 - 96   2009年

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記述言語：日本語   出版者・発行元：一般社団法人 映像情報メディア学会  

著者らは,ライフログの種類によらない汎用的なラベル(平常/非平常)を新たに提案し,サービスの種類の増大や質の向上を目指している.本報告では,脈拍数を例として,特定時間区間における脈拍数の平均値や分散値に加え,直線近似における傾き成分の持続時間や周波数成分といった時系列的特徴量を用いて平常/非平常状態の判定法を検討し,複数人を対象とした実験データを用いてその判定法の評価を行った.その結果,脈拍数の時系列の減少傾向を新たな特徴量とすることでラベリングの精度が向上することを確認した.

DOI： 10.11485/itetr.33.37.0_91

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Easy-setup eye movement recording system for human-computer interaction 査読

Manh Duong Phung, Quang Vinh Tran, Kenji Hara, Hirohito Inagaki, Masanobu Abe

RIVF 2008 - 2008 IEEE International Conference on Research, Innovation and Vision for the Future in Computing and Communication Technologies   292 - 297   2008年7月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

Tracking the movement of human eyes is expected to yield natural and convenient applications based on human-computer interaction (HCI). To implement an effective eye-tracking system, eye movements must be recorded without placing any restriction on the user's behavior or user discomfort. This paper describes an eye movement recording system that offers free-head, simple configuration. It does not require the user to wear anything on her head, and she can move her head freely. Instead of using a computer, the system uses a visual digital signal processor (DSP) camera to detect the position of eye corner, the center of pupil and then calculate the eye movement. Evaluation tests show that the sampling rate of the system can be 300 Hz and the accuracy is about 1.8 °/s. ©2008 IEEE.

DOI： 10.1109/RIVF.2008.4586369

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Support Vector Machineを使ったモーラ列からの日本語姓名のアクセント推定 査読

中嶋秀治, 永田昌明, 浅野久子, 阿部匡伸

電子情報通信学会論文誌. D-II   J88-D2 ( 3 )   480 - 488   2005年3月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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Say-as Classification for Alphabetic Words in Japanese Texts 査読

H. Asano, M. Nagata, M. Abe

Proc. European Conf. on Speech Communication and Technology (EuroSpeech) 2003   3181 - 3184   2003年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Estimating Japanese Word Accent from Syllable Sequence using Support Vector Machine 査読

H. Nakajima, M. Nagata, H. Asano, M. Abe

Proc. European Conf. on Speech Communication and Technology (EuroSpeech) 2003   2681 - 2684   2003年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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A bilingual speech design tool: Sesisgn2001 査読

M. Abe, O. Mizuno, T. Shinozaki, H. Mizuno, S. Nakajima

Proc. 4th Speech Synthesis Workshop,   17 - 21   2001年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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音声デザインツールSesign 査読

阿部匡伸, 水野秀之, 水野理, 野田喜昭, 高橋敏, 中嶌信弥

電子情報通信学会論文誌. D-II   J84-D-II ( 6 )   927 - 935   2001年6月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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A Japanese TTS system based on multiform units and a speech modification algorithm with harmonics reconstruction 査読

S Takano, K Tanaka, H Mizuno, M Abe, S Nakajima

IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING   9 ( 1 )   3 - 10   2001年1月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

This paper proposes a new text to-speech (TTS) system that utilizes large numbers of speech segments to produce very natural and intelligible synthetic speech. There are two innovations; new multiform synthesis units and a new speech modification algorithm based on a vocoder that offers harmonics reconstruction. The multiform units make it possible to reduce acoustic discontinuities at concatenation points and unnatural sound by preparing synthesis units with various lengths and various F-0 contours. The new speech modification algorithm, on the other hand, improves the quality of prosody modified speech. This algorithm is extremely effective in synthesizing speech whose prosodic parameters are quite different from those of synthesis units. Listening tests confirm that the new synthesis units yield speech with high intelligibility and naturalness, and that the new speech modification algorithm is superior to all other conventional vocoders and waveform domain algorithms including TD-PSOLA, especially when modifying the F-0 frequency upward.

DOI： 10.1109/89.890065

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A new Japanese TTS system based on speech-prosody database and speech modification 査読

M. Isogai, K. Tanaka, S. Takano, H. Mizuno, M. Abe, S. Nakajima

Proc. Int. Conf. on Spoken Language Processing (ICSLP) 2000   2000年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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基本周波数の変更量に応じてスペクトル包絡を変形する音声合成方式 査読

田中公人, 阿部匡伸

電子情報通信学会論文誌. D-II   J83-D-II ( 8 )   1722 - 1732   2000年8月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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A new communication paradigm; Action-to-Speech 査読

M Abe, T Shinozaki

2000 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO, PROCEEDINGS VOLS I-III   257 - 260   2000年8月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

In this paper, we propose a new technology that enhances the communication ability of human beings. We call it Action-to-Speech (A2S). A2S generates speech from actions or gestures and makes it possible for people who speak different languages or the speaking impaired to communicate. Features of A2S are as follows. (1) Because meanings are defined by mapping functions between action and speech, it is easy for the system to handle new languages. (2) Because prosodic characteristics of speech can be controlled in real time, smooth communication is possible. (3) Because sensors capture actions, reliable responses are guaranteed. A prototype system was developed. Evaluations indicate that A2S makes it possible for persons speaking different languages to easily and effectively communicate.

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Development of CAI system employing synthesized speech and CG animated agent 査読

T Shinozaki, M Abe

2000 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO, PROCEEDINGS VOLS I-III   585 - 588   2000年8月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

This paper proposes a Computer Assisted Instruction (CAI) system that teaches how to write Japanese characters. The system has two important features: synthesized speech output with the easy generation of various instructions and a Computer Graphics (CG) animated agent that provides a user-friendly interface. The CAI system has a video display tablet interface. A user traces the pattern of a character using the tablet pen, and his/her tracing is shown simultaneously on the display. When the line that the user draws slips outside the pattern, the system simultaneously outputs synthesized speech to correct the error. Evaluation experiments were performed and we confirmed (i) interactive instructions using synthesized speech are effective, (ii) users prefer to receive instructions via both speech and the CG animated agent. (iii) the synthesized speech well matches the CG animated agent.

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WebMessenger: A new framework to produce multimedia content by combining synthesized speech and moving pictures in the WWW environment 査読

M. Abe, H. Mizuno, T. Shinozaki

Proc. Multimedia Signal Processing (MMSP)'99   611 - 616   1999年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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A Japanese Text-to-Speech system based on multi-from units with consideration of frequency distribution in Japanese 査読

K. Tanaka, H. Mizuno, M. Abe, S. Nakajima

Proc. European Conf. on Speech Communication and Technology (EuroSpeech)'99   389 - 392   1999年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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A new F0 modification algorithm by manipulating harmonics of magnitude spectrum 査読

S. Takano, M. Abe

Proc. European Conf. on Speech Communication and Technology (EuroSpeech)'99   1875 - 1878   1999年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Development of speech design tool 'Sesign99' to enhance synthesized speech 査読

H. Mizuno, M. Abe, S. Nakajim

Proc. European Conf. on Speech Communication and Technology (EuroSpeech)'99   2083 - 2086   1999年9月

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A development of CAI system employing synthesized speech responses 査読

T. Shinozaki, M. Abe

Int. Conf. on Spoken Language Processing (ICSLP) '98   2855 - 2858   1998年12月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Report on the Third ESCA TTS Workshop Evaluation Procedure 査読

J. Santan, L.Pols, M. Abe, D. Kahn, E. Keller, J. Vonwiller

3rd Int. Workshop on Speech Synthesis   329 - 332   1998年11月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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The use of large text corpora for evaluating text-to-speech systems 査読

L.Pols, J. Santan, M. Abe, D. Kahn, E.Keller

1st Int. Conf. on Language Research and Evaluation   421 - 424   1998年5月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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A prototype hybrid scalable text-to-speech system 査読

M. Abe, H. Mizuno, S. Takahashi, S. Nakajima

Proc. Workshop on Synthetic Natural Hybrid Coding(SNHC) and 3D Image   8 - 11   1997年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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A new framework to provide high-controllability speech signal and the development of a workbench for it 査読

M. Abe, H. Mizuno, S. Takahashi, S. Nakajima

Proc. European Conf. on Speech Communication and Technology (EuroSpeech)'97   541 - 544   1997年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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A new fundamental frequency modification algorithm with transformation of spectrum envelope according to F-0 査読

K Tanaka, M Abe

1997 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS I - V   951 - 954   1997年5月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE COMPUTER SOC  

This paper proposes a new speech modification algorithm which makes it possible to change the fundamental frequency (F-0) while preserving high quality. One novel point of the algorithm is that the spectrum envelope is transformed according to amount of F-0 modification. Based on a codebook mapping formulation, transformation rules are generated using speech data uttered in a different F-0 range. The rules have two purposes: one is transforming the spectrum envelope of the low frequency band and the other is adjusting the balance between low band power and high band power. The proposed algorithm is applied to a text-to-speech system based on waveform concatenation, and good performance is confirmed by listening tests.

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誤り指示音声の特徴分析と音声出力への適用 査読

阿部匡伸

電子情報通信学会論文誌. D-II   J79-D-II ( 12 )   2191 - 2198   1996年12月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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Speech morphing by gradually changing spectrum parameter and fundamental frequency 査読

M Abe

ICSLP 96 - FOURTH INTERNATIONAL CONFERENCE ON SPOKEN LANGUAGE PROCESSING, PROCEEDINGS, VOLS 1-4   2235 - 2238   1996年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

This paper proposes a new application of speech modification called ''speech morphing''. In image processing, morphing is a well known technique that gradually changes one person's face to that of someone else. Speech morphing produces duces similar results for speech; i.e., one person's speech is gradually changed to that of someone else, Speech morphing makes it possible to create movies or multi-media entertainment together with image morphing. The proposed algorithm pitch-synchronously modifies fundamental frequency (F-0) and DFT spectrum and outputs high quality speech. To clarify the balance of F-0 modification and spectrum modification, listening tests were carried out using 20 male speakers. The results yielded the relationship between the amount of modification and speaker identity. In terms of overall performance, listening tests show that the proposed algorithm successfully generates smooth, high quality voice changes.

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An information retrieval system from text database using text-to-speech 査読

M. Abe, K. Hakoda, H. Tsukada

Applied Voice Input/Output Society (AVIOS)'96   189 - 196   1996年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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A formant frequency modification algorithm dealing with the pole interaction 査読

H Mizuno, M Abe

ELECTRONICS AND COMMUNICATIONS IN JAPAN PART III-FUNDAMENTAL ELECTRONIC SCIENCE   79 ( 1 )   46 - 55   1996年1月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：SCRIPTA TECHNICA-JOHN WILEY & SONS  

When a formant is modified based on the pole of the AR model, a problem arises due to the interaction between the pole to be modified and other poles such as the apparent elimination of the formant, if the frequency of the considered pole simply is modified. To solve this problem, the method proposed in this paper uses the spectral intensity at the pole frequency as a new feature parameter and the spectral intensity at the pole after the frequency modification is corrected to the desired value by iterative processings.
To examine the effectiveness of the proposed method, an experiment was conducted in which a phoneme in a word is replaced into the same phoneme in a different environment, and then the formant frequency is modified by the proposed method in order to restore the original speech. The speeches before and after the modification are compared in terms of the cepstral distance (CD) from the original speech, and it is verified that the proposed method is effective in the modification of the formant. An attempt is made to solve the formant discontinuity problem at the concatenation point in waveform based speech synthesis-by-rule and to modify the formant frequency accompanying the modification of the fundamental frequency using the proposed method. It was verified as a result of experiment that the speech after formant modification is better than the speech before modification, indicating that the proposed method is useful in improving the quality of the synthesized speech.

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異なる発話様式の特徴分析とその制御 査読

阿部匡伸

日本音響学会誌   51 ( 12 )   929 - 937   1995年12月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.11477/mf.1662901259

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Analysis of prosodic characteristics in speech advisories and their application to speech output 査読

M. Abe

Proc. European Conf. on Speech Communication and Technology (EuroSpeech)'95   2031 - 2034   1995年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Using speech advisories to correct human errors; Human speech vs. Synthetic speech 査読

M. Abe

Proc. Human Computer Interaction (HCI)'95   61 - 61   1995年6月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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極相互の相関を考慮したフォルマント周波数変換法 査読

水野秀之, 阿部匡伸

電子情報通信学会論文誌. A   J78-A ( 3 )   287 - 294   1995年3月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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VOICE CONVERSION ALGORITHM-BASED ON PIECEWISE-LINEAR CONVERSION RULES OF FORMANT FREQUENCY AND SPECTRUM TILT

H MIZUNO, M ABE

SPEECH COMMUNICATION   16 ( 2 )   153 - 164   1995年2月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

This article presents a new algorithm used in order to convert the speech of one speaker so that it sounds like that of another speaker. This algorithm flexibly converts voice quality using two major technical developments. Firstly, the modification of formant frequencies and spectral intensity using piecewise linear voice conversion rules. This enables the control of spectrum parameters in detail. The conversion rules are generated automatically for any pair of speakers. The reliability of the conversion rules is guaranteed because they are statistically generated using training data. Secondly, this algorithm provides the ability to produce speech with the desired formant structure by controlling formant frequencies, formant bandwidths and spectral intensity. Speech is iteratively modified in order to achieve the specified formant structure. Listening tests prove that the proposed algorithm converts speaker individuality while maintaining high speech quality.

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An algorithm to reconstruct wideband speech from narrowband speech based on codebook mapping 査読

Y. Yoshida, M. Abe

Proc. Int. Conf. on Spoken Language Processing (ICSLP) '94   1591 - 1594   1994年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Speaking style conversion by changing prosodic parameters and formant frequencies 査読

M. Abe

Proc. Int. Conf. on Spoken Language Processing (ICSLP) '94   1455 - 1458   1994年9月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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VOICE CONVERSION BASED ON PIECEWISE-LINEAR CONVERSION RULES OF FORMANT FREQUENCY AND SPECTRUM TILT 査読

H MIZUNO, M ABE

ICASSP-94 - PROCEEDINGS, VOL 1   469 - 472   1994年4月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

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A strategy for changing speaking styles in text-to-speech systems

M. Abe

European Speech Communication Association(ESCA)/IEEE Workshop on Speech Synthesis   41 - 44   1994年

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音節区分化モデルに基づく基本周波数の2階層制御方式 査読

阿部匡伸, 佐藤大和

日本音響学会誌   49 ( 10 )   682 - 690   1993年10月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.20697/jasj.49.10_682

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Statistical analysis of the acoustic and prosodic characteristics of different speaking style 査読

M. Abe, H. Sato

Proc. European Conf. on Speech Communication and Technology (EuroSpeech)'93   2107 - 2110   1993年10月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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WAVE-FORM-BASED SPEECH SYNTHESIS APPROACH WITH A FORMANT FREQUENCY MODIFICATION 査読

H MIZUNO, M ABE, T HIROKAWA

ICASSP-93 : 1993 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS 1-5   B195 - B198   1993年4月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：I E E E  

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A voice conversion based on phoneme segment mapping 査読

Masanobu Abe, Shigeki Sagayama

Journal of the Acoustical Society of Japan (E)   13 ( 3 )   131 - 139   1992年5月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

Voice conversion is a technique to change speaker individuality
i.e., speech uttered by a speaker is changed to sound as if another speaker had uttered it. In this paper, we propose a voice conversion algorithm that uses speech segments as conversion units. Input speech is decomposed into speech segments by a speech recognition module and the segments are replaced by speech segments uttered by another speaker. This algorithm makes it possible to convert not only the static characteristics but also speaker individuality contained in phoneme segments. The proposed voice conversion algorithm was performed between two male speakers. Spectrum distortion between target speech and the converted speech was reduced to one-third the natural spectrum difference between the two speakers. A litening experiment showed that, in terms of speaker identification accuracy, the speech converted by segment-sized units gave a score 20% higher than the speech converted frame-by-frame. © 1992, Acoustical Society of Japan. All rights reserved.

DOI： 10.1250/ast.13.131

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2-STAGE F0 CONTROL MODEL USING SYLLABLE BASED F0 UNITS 査読

M ABE, H SATO

ICASSP-92 - 1992 INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS 1-5   B53 - B56   1992年4月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：I E E E  

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STATISTICAL-ANALYSIS OF BILINGUAL SPEAKERS SPEECH FOR CROSS-LANGUAGE VOICE CONVERSION 査読

M ABE, K SHIKANO, H KUWABARA

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA   90 ( 1 )   76 - 82   1991年7月

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：AMER INST PHYSICS  

The goal of cross-language voice conversion is to preserve the speech characteristics of one speaker when that speaker's speech is translated and used to synthesize speech in another language. In this paper, two preliminary studies, i.e., a statistical analysis of spectrum differences in different languages and the first attempt at a cross-language voice conversion, are reported. Speech uttered by a bilingual speaker is analyzed to examine spectrum difference between English and Japanese. Experimental results are (1) the codebook size for mixed speech from English and Japanese should be almost twice the codebook size of either English or Japanese; (2) although many code vectors occurred in both English and Japanese, some have a tendency to predominate in one language or the other; (3) code vectors that predominantly occurred in English are contained in the phonemes /r/, /ae/, /f/, /s/, and code vectors that predominantly occurred in Japanese are contained in /i/, /u/, /N/; and (4) judged from listening tests, listeners cannot reliably indicate the distinction between English speech decoded by a Japanese codebook and English speech decoded by an English codebook. A voice conversion algorithm based on codebook mapping was applied to cross-language voice conversion, and its performance was somewhat less effective than for voice conversion in the same language.

DOI： 10.1121/1.402284

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A SEGMENT-BASED APPROACH TO VOICE CONVERSION 査読

M ABE

ICASSP 91, VOLS 1-5   765 - 768   1991年5月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：I E E E  

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CROSS-LANGUAGE VOICE CONVERSION 査読

M ABE, K SHIKANO, H KUWABARA

ICASSP 90, VOLS 1-5   345 - 348   1990年4月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：I E E E  

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Voice conversion through vector quantization 査読

M. Abe, S. Nakamura, K. Shikano, H. Kuwabara

J. Acoust. Soc.Jpn.(E)   11 ( 2 )   71 - 76   1990年3月

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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Statistical Study on Voice Individuality Conversion Across Different Languages 査読

M. Abe, S. Sagayama

Int. Conf. on Spoken Language Processing (ICSLP) '90   157 - 160   1990年

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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FFTスペクトルからの信号再生法による音声変換手法 査読

阿部匡伸, 田村震一, 桑原尚夫

電子情報通信学会論文誌. D-II   J72-D-II ( 8 )   1180 - 1186   1989年8月

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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A new speech modification method by signal reconstruction 査読

M. Abe, S. Tamura, H. Kuwabara

Proc. Int. Conf. on Acoustics, Speech, and Signal Processing (ICASSP) '89   592 - 595   1989年5月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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Voice conversion through vector quantization 査読

M. Abe, S. Nakamura, K. Shikano, H. Kuwabara

Proc. ICASSP'88, S14.1   655 - 658   1988年4月

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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