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論文 - 原　直

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Continual learning on audio scene classification using representative data and memory replay GANs 査読国際共著国際誌

Ibnu Daqiqil ID, Masanobu Abe, Sunao Hara

Bulletin of Electrical Engineering and Informatics 14 ( 1 ) 568 - 580 2025年2月

担当区分：最終著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Institute of Advanced Engineering and Science

This paper proposes a methodology aimed at resolving catastropic forgetting problem by choosing a limited portion of the historical dataset to act as a representative memory. This method harness the capabilities of generative adversarial networks (GANs) to create samples that expand upon the representative memory. The main advantage of this method is that it not only prevents catastrophic forgetting but also improves backward transfer and has a relatively stable and small size. The experimental results show that combining real representative data with artificially generated data from GANs, yielded better outcomes and helped counteract the negative effects of catastrophic forgetting more effectively than solely relying on GAN-generated data. This mixed approach creates a richer training environment, aiding in the retention of previous knowledge. Additionally, when comparing different methods for selecting data as the proportion of GAN-generated data increases, the low probability and mean cluster methods performed the best. These methods exhibit resilience and consistency by selecting more informative samples, thus improving overall performance.

DOI： 10.11591/eei.v14i1.8127

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OtologMap: a case study on the construction of an environmental sound map recorded by smart devices at Okayama and Kurashiki 査読国際誌

Sunao Hara, Masanobu Abe

Noise Control Engineering Journal 1 - 12 2025年2月

Gait analysis and severity estimation of Parkinson's disease patients using insole-type pressure sensors 査読国際誌

Mami TAKEMOTO, Kousei HAYASHI, Sunao HARA, Toru YAMASHITA, Masanobu ABE

IEICE Transactions on Information and Systems 2025年

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)

Parkinson's disease (PD) is an intractable neurological disease that affects approximately 100-150 per 100, 000 people in Japan, with more than 95% of these patients aged 60 years or older. The Hoehn and Yahr staging scale (H-Y scale) [1] and Unified Parkinson's Disease Rating Scale (UPDRS) score [2] are typical indicators of PD severity, but subjective aspects cannot be completely excluded. This is due to the limited means to quantitatively measure and evaluate gait as a motor symptom of PD. However, in recent years, human movement has been measured by wearable devices and other devices in daily life. In this paper, we took this wearable-device measurement one step further and aimed to apply insole-type pressure sensors to medical care. We collected data from two patients with PD at H-Y stage 2 and nine patients with PD at H-Y stage 3, then generated a time-series pattern representing their gait patterns. By analyzing these gait patterns, we found that the sum of the three toe sensors and the sum of the two heel sensors provided stable data. The overlap time of the two summed sensor values and the deviations of each summed sensor value were defined as features. Using the features, we proposed PD severity estimation based on the k-means method. Experimental results showed that the estimation of Yahr 3 and healthy individuals was achieved with high accuracy, but Yahr 2 was often classified as a healthy individual.

DOI： 10.1587/transinf.2024edp7285

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Explicit Prosody Control to Realize Discourse Focus in End-to-End Text-to-Speech 査読国際誌

Takumi WADA, Sunao HARA, Masanobu ABE

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

Speech-Emotion Control for Text-to-Speech in Spoken Dialogue Systems Using Voice Conversion and x-vector Embedding 査読国際誌

Shunichi Kohara, Masanobu Abe, Sunao Hara

2023 Asia Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC 2023) 2280 - 2286 2023年11月

Speech Synthesis Using Ambiguous Inputs From Wearable Keyboards 査読国際誌

Matsuri Iwasaki, Sunao Hara, Masanobu Abe

2023 Asia Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC 2023) 1172 - 1178 2023年11月

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

Sunao Hara, Masanobu Abe

Proceedings of the 52nd International Congress and Exposition on Noise Control Engineering (Inter-Noise 2023) 1 - 12 2023年8月

Predictions for sound events and soundscape impressions from environmental sound using deep neural networks 招待国際誌

Sunao Hara, Masanobu Abe

Proceedings of the 52nd International Congress and Exposition on Noise Control Engineering (Inter-Noise 2023) 1 - 12 2023年8月

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

Incremental Audio Scene Classifier Using Rehearsal-Based Strategy 査読国際誌

Ibnu Daqiqil Id, Masanobu Abe, Sunao Hara

2022 IEEE 10th Global Conference on Consumer Electronics (GCCE) 69 - 623 2022年10月

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

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

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

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

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

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

Speech Communication 126 35 - 43 2021年2月

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

Katsuki Inoue, Sunao Hara, Masanobu Abe

Proceedings of APSIPA Annual Summit and Conference (APSIPA-ASC 2020) 826 - 830 2020年12月

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

Ibnu Daqiqil Id, Masanobu Abe, Sunao Hara

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

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

Kento Matsumoto, Sunao Hara, Masanobu Abe

Proceedings of Interspeech 2020 3421 - 3425 2020年10月

Semi-Supervised Speaker Adaptation for End-to-End Speech Synthesis with Pretrained Models 査読国際共著国際誌

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

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

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

Hiroki Murakami, Sunao Hara, Masanobu Abe

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

Speech-like Emotional Sound Generator by WaveNet 査読国際誌

Kento Matsumoto, Sunao Hara, Masanobu Abe

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

A signal processing perspective on human gait: Decoupling walking oscillations and gestures 査読国際誌

Adrien Gregorj, Zeynep Yücel, Sunao Hara, Akito Monden, Masahiro Shiomi

Proceedings of the 4th International Conference on Interactive Collaborative Robotics 2019 (ICR 2019) 11659 75 - 85 2019年8月

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

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

Sound sensing using smartphones as a crowdsourcing approach. 査読国際誌

Sunao Hara, Asako Hatakeyama, Shota Kobayashi, Masanobu Abe

2017 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017, Kuala Lumpur, Malaysia, December 12-15, 2017 1328 - 1333 2017年12月

An investigation to transplant emotional expressions in DNN-based TTS synthesis. 査読国際誌

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

2017 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017, Kuala Lumpur, Malaysia, December 12-15, 2017 1253 - 1258 2017年12月

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

Shigeki Kamada, Yuji Matsuo, Sunao Hara, Masanobu Abe

Proceedings of the 1st ACM SIGSPATIAL Workshop on Recommendations for Location-based Services and Social Networks, LocalRec@SIGSPATIAL 2017, Redondo Beach, CA, USA, November 7-10, 2017 1:1 - 1:7 2017年11月

Prediction of subjective assessments for a noise map using deep neural networks. 査読国際誌

Shota Kobayashi, Masanobu Abe, Sunao Hara

Adjunct Proceedings of the 2017 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2017 ACM International Symposium on Wearable Computers, UbiComp/ISWC 2017, Maui, HI, USA, September 11-15, 2017 113 - 116 2017年9月

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

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

Interspeech 2017 2017年8月

Speaker Dependent Approach for Enhancing a Glossectomy Patient's Speech via GMM-based Voice Conversion

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

18TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION (INTERSPEECH 2017), VOLS 1-6 3384 - 3388 2017年

Enhancing a glossectomy patient's speech via GMM-based voice conversion 査読国際誌

Kei Tanaka, Sunao Hara, Masanobu Abe, Shogo Minagi

2016 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA) 1 - 4 2016年12月

LiBS: Lifelog browsing system to support sharing of memories 査読国際誌

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

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

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

Sound collection systems using a crowdsourcing approach to construct sound map based on subjective evaluation 査読国際誌

Sunao Hara, Shota Kobayashi, Masanobu Abe

IEEE ICME Workshop on Multimedia Mobile Cloud for Smart City Applications (MMCloudCity-2016) 1 - 6 2016年

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

Masaki Yamaoka, Sunao Hara, Masanobu Abe

Proceedings of APSIPA Annual Summit and Conference 2015 229 - 232 2015年12月

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

Masanobu Abe, Akihiko Hirayama, Sunao Hara

Proceedings of IEEE International Conference on Consumer Electronics (IEEE-ICCE 2015) 36 - 39 2015年1月

Sound collection and visualization system enabled participatory and opportunistic sensing approaches 査読国際誌

Sunao Hara, Masanobu Abe, Noboru Sonehara

Proceedings of 2015 IEEE International Conference on Pervasive Computing and Communication Workshops (PerCom Workshops) 390 - 395 2015年

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

Yuji Matsuo, Sunao Hara, Masanobu Abe

HCI International 2015 - Posters’ Extended Abstracts (Part II), CCIS 529 529 570 - 576 2015年

Extraction of Key Segments from Day-Long Sound Data 査読国際誌

Akinori Kasai, Sunao Hara, Masanobu Abe

HCI International 2015 - Posters’ Extended Abstracts (Part I), CCIS 528 528 620 - 626 2015年

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

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

Proceedings of Interspeech 2015 264 - 268 2015年

Inhibitory Effects of an Orally Active Small Molecule Alpha4beta1/Alpha4beta7 Integrin Antagonist, TRK-170, on Spontaneous Colitis in HLA-B27 Transgenic Rats

Hiroe Hirokawa, Yoko Koga, Rie Sasaki, Sunao Hara, Hiroyuki Meguro, Mie Kainoh

GASTROENTEROLOGY 146 ( 5 ) S640 - S640 2014年5月

A graph-based spoken dialog strategy utilizing multiple understanding hypotheses 査読

Norihide Kitaoka, Yuji Kinoshita, Sunao Hara, Chiyomi Miyajima, Kazuya Takeda

Information and Media Technologies 9 ( 1 ) 111 - 120 2014年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Information and Media Technologies Editorial Board

We regarded a dialog strategy for information retrieval as a graph search problem and proposed several novel dialog strategies that can recover from misrecognition through a spoken dialog that traverses the graph. To recover from misrecognition without seeking confirmation, our system kept multiple understanding hypotheses at each turn and searched for a globally optimal hypothesis in the graph whose nodes express understanding states across user utterances in a whole dialog. In the search, we used a new criterion based on efficiency in information retrieval and consistency with understanding hypotheses, which is also used to select an appropriate system response. We showed that our system can make more efficient and natural dialogs than previous ones.

DOI： 10.11185/imt.9.111

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New approach to emotional information exchange: Experience metaphor based on life logs 査読国際誌

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

2014 IEEE International Conference on Pervasive Computing and Communication Workshops, PerCom 2014 Workshops 191 - 194 2014年3月

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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Development of a Toolkit Handling Multiple Speech-Oriented Guidance Agents for Mobile Applications 査読国際誌

Sunao Hara, Hiromichi Kawanami, Hiroshi Saruwatari, Kiyohiro Shikano

Natural Interaction with Robots, Knowbots and Smartphones, Putting Spoken Dialog Systems into Practice 79 - 85 2014年

Evaluation of Invalid Input Discrimination Using Bag-of-Words for Speech-Oriented Guidance System 査読国際誌

Haruka Majima, Rafael Torres, Hiromichi Kawanami, Sunao Hara, Tomoko Matsui, Hiroshi Saruwatari, Kiyohiro Shikano

Natural Interaction with Robots, Knowbots and Smartphones, Putting Spoken Dialog Systems into Practice 389 - 397 2014年

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

Takuma Inoue, Sunao Hara, Masanobu Abe

Proceedings of Asia-Pacific Signal and Information Processing Association 2014 Annual Summit and Conference 1 - 4 2014年

音声情報案内システムにおけるBag-of-Wordsを用いた無効入力の棄却査読

真嶋温佳, 藤田洋子, トーレス・ラファエル, 川波弘道, 原直, 松井知子, 猿渡洋, 鹿野清宏

情報処理学会論文誌 54 ( 2 ) 443 - 451 2013年2月

記述言語：日本語出版者・発行元：情報処理学会

実環境における音声認識を用いた情報案内システムでは，雑音等の非音声やユーザ同士の背景会話など，システムへの入力として不適切な入力が存在する．これらの入力はシステムの誤作動・誤認識の原因となるので，システムへの入力として適切な入力（有効入力）と不適切な入力（無効入力）の識別を行い，無効入力を棄却することにより，無効入力に対する応答処理を行わないことが重要である．従来，有効入力と無効入力との識別には，メル周波数ケプストラム係数などの音響的特徴量によるGMM（Gaussian Mixture Model）が用いられる．しかし，入力データの音声認識結果から得られる言語的な情報を使うことにより，システムのタスクを考えたうえで有効入力と無効入力の識別が可能になると考えられる．そこで本論文では，音響特徴量にBag-of-Words（BOW）を言語的特徴量として併用した無効入力の識別を検討した．識別手法としては，サポートベクタマシン（SVM）および最大エントロピー法を用いた．実験には実環境音声情報案内システム「たけまるくん」の入力データを用いた．SVMによる識別結果では，GMMによる音響尤度のみを用いた場合に比べて，BOWを用いた場合，F尺度を82.19%から85.41%に改善することができた．さらに，GMMによる音響尤度，発話時間，SNRを組み合わせた特徴量にBOWを追加することで，F尺度を86.58%まで改善することができた．詳細な分析の結果，BOWは特に無効入力の誤受理を減らす効果があることが示された．On a real environment speech-oriented information guidance system, a valid and invalid input discrimination is important as invalid inputs such as noise, laugh, cough and utterances between users lead to unpredictable system responses. Generally, acoustic features such as MFCC (Mel-Frequency Cepstral Coefficient) are used for discrimination. Comparing acoustic likelihoods of GMMs (Gaussian Mixture Models) from speech data and noise data is one of the typical methods. In addition to that, using linguistic features, such as speech recognition result, is considered to improve discrimination accuracy as it reflects the task-domain of invalid inputs and meaningless recognition results from noise inputs. In this paper, we introduce Bag-of-Words (BOW) as a feature to discriminate between valid and invalid inputs. Support Vector Machine (SVM) and Maximum Entropy method (ME) are also employed to realize robust classification. We experimented the methods using real environment data obtained from the guidance system "Takemaru-kun." By applying BOW on SVM, the F-measure is improved to 85.09%, from 82.19% when using GMMs. In addition, experiments using features combining BOW with acoustic likelihoods from GMMs, Duration and SNR were conducted, improving the F-measure to 86.58%.

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音声対話システムの発話・動作タグN-gramを用いた課題未達成のオンライン検出査読

原直, 北岡教英, 武田一哉

電子情報通信学会論文誌 (D) J96-D ( 1 ) 81 - 93 2013年1月

担当区分：筆頭著者記述言語：日本語出版者・発行元：一般社団法人電子情報通信学会

本論文ではN-gram特徴を用いた音声対話システム利用時の課題未達成対話の検出手法を提案する.実験にはユーザが自分のPC上で利用するという,実環境下で収録された楽曲検索のための音声対話システムとの対話データを利用する.楽曲検索課題を行っている全ての対話データはユーザとシステムの発話を抽象化した発話・動作ダグにより記述し,そのタグ系列をN-gramとしてモデル化を行う.本研究では,タグ系列中のタグN-gramの出現回数を素性として,Support Vector MachineやC4.5決定木などの識別的手法による課題未達成対話の検出実験を行った.更に対話長や反応時間などの対話の特徴を表す対話変数を導入することで検出性能の向上を行った.その結果,ユーザの4回目の発話までを用いることで,約76%の識別率となった.

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その他リンク： http://search.ieice.org/bin/summary.php?id=j96-d_1_81&category=D&year=2013&lang=J&abst=

Acoustic Model Training Using Pseudo-Speaker Features Generated by MLLR Transformations for Robust Speaker-Independent Speech Recognition 査読

Arata Itoh, Sunao Hara, Norihide Kitaoka, Kazuya Takeda

IEICE TRANSACTIONS on Information and Systems E95D ( 10 ) 2479 - 2485 2012年10月

Causal analysis of task completion errors in spoken music retrieval interactions 査読国際誌

Sunao Hara, Norihide Kitaoka, Kazuya Takeda

Proceedings of the 8th international conference on Language Resources and Evaluation (LREC 2012) 1365 - 1372 2012年5月

Robust seed model training for speaker adaptation using pseudo-speaker features generated by inverse CMLLR transformation 査読国際誌

Arata Itoh, Sunao Hara, Norihide Kitaoka, Kazuya Takeda

Proceedings of 2011 Automatic Speech Recognition and Understanding Workshop (ASRU 2011) 169 - 172 2011年12月

Training Robust Acoustic Models Using Features of Pseudo-Speakers Generated by Inverse CMLLR Transformations 査読国際誌

Arata Itoh, Sunao Hara, Norihide Kitaoka, Kazuya Takeda

Proceedings of 2011 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC 2011) 1 - 5 2011年12月

On-line detection of task incompletion for spoken dialog systems using utterance and behavior tag N-gram vectors 査読国際誌

Sunao Hara, Norihide Kitaoka, Kazuya Takeda

Proceedings of the Paralinguistic Information and Its Integration in Spoken Dialogue Systems Workshop 215 - 225 2011年9月

Detection of task-incomplete dialogs based on utterance-and-behavior tag N-gram for spoken dialog systems 査読国際誌

Sunao Hara, Norihide Kitaoka, Kazuya Takeda

Proceedings of INTERSPEECH 2011 1312 - 1315 2011年

Music Recommendation System Based on Human-to-human Conversation Recognition 査読国際誌

Hiromasa Ohashi, Sunao Hara, Norihide Kitaoka, Kazuya Takeda

Workshop Proceedings of the 7th International Conference on Intelligent Environments: Ambient Intelligence and Smart Environments 10 352 - 361 2011年

Automatic detection of task-incompleted dialog for spoken dialog system based on dialog act N-gram 査読国際誌

Sunao Hara, Norihide Kitaoka, Kazuya Takeda

Proceedings of INTERSPEECH2010 3034 - 3037 2010年9月

Rapid acoustic model adaptation using inverse MLLR-based feature generation 査読国際誌

Arata Ito, Sunao Hara, Norihide Kitaoka, Kazuya Takeda

Proceedings of ICA2010 5 1 - 6 2010年8月

Estimation method of user satisfaction using N-gram-based dialog history model for spoken dialog system 査読国際誌

Sunao Hara, Norihide Kitaoka, Kazuya Takeda

LREC 2010 - SEVENTH INTERNATIONAL CONFERENCE ON LANGUAGE RESOURCES AND EVALUATION 78 - 83 2010年5月

Data collection and usability study of a PC-based speech application in various user environments 査読国際誌

Sunao Hara, Chiyomi Miyajima, Katsunobu Ito, Norihide Kitaoka, Kazuya Takeda

Proceedings of Oriental-COCOSDA 2008 39 - 44 2008年11月

In-car Speech Data Collection along with Various Multimodal Signals 査読国際誌

Akira Ozaki, Sunao Hara, Takashi Kusakawa, Chiyomi Miyajima, Takanori Nishino, Norihide Kitaoka, Katunobu Itou, Kazuya Takeda

Proceedings of the Sixth International Conference on Language Resources and Evaluation (LREC'08) 1846 - 1851 2008年5月

多様な音響環境下における音声認識システム利用時のデータ収集システム査読

原直, 宮島千代美, 伊藤克亘, 武田一哉

電子情報通信学会論文誌(D) J90-D ( 10 ) 2807 - 2816 2007年10月

担当区分：筆頭著者記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人電子情報通信学会

多様なPC利用環境において音声認識の被験者実験を行うために,WWWを利用した音声対話システム及びそのデータ収集システムを構築した.本システムのユーザはPC上にインストールされたクライアントプログラムを用いることで音声対話によりPC内に蓄積された音楽を再生したり,音楽ダウンロードサイトの楽曲を試聴することができる.クライアントプログラムの利用により収集された音声データや対話ログはインターネットを介してサーバ上に蓄積される.サーバには,ユーザごとの辞書のカスタマイズ等の機能も実装している.本システムをインターネット上で試験的に公開し,2か月間のフィールドテストとしてデータ収集を行ったところ合計59時間のシステム稼動時データを収集した.そのうち約5時間41分のデータ(11351個)が音声区間として検出されており,システムに対して発話されていた音声データとして6335発話を得た.

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An online customizable music retrieval system with a spoken dialogue interface 査読国際誌

Sunao Hara, Chiyomi Miyajima, Katsunobu Itou, Kazuya Takeda

The Journal of the Acoustical Society of America 120 ( 5-2 ) 3378 - 3379 2006年11月

Novel orally active alpha 4 integrin antagonist, T-728, attenuates dextran sodium sulfate-induced chronic colitis in mice

Ken-Ichi Hayashi, Hiroyuki Meguro, Sunao Hara, Rie Sasaki, Yoko Koga, Meiko Takeshita, Naoyoshi Yamamoto, Hiroe Hirokawa, Mie Kainoh

GASTROENTEROLOGY 130 ( 4 ) A352 - A352 2006年4月

Preliminary Study of a Learning Effect on Users to Develop a New Evaluation of the Spoken Dialogue System 査読国際誌

Sunao Hara, Ayako Shirose, Chiyomi Miyajima, Katsunobu Ito, Kazuya Takeda

Proceedings of Oriental-COCOSDA 2005 164 - 168 2005年12月

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