Ryuichi Nisimura

According to our database, Ryuichi Nisimura authored at least 38 papers between 2001 and 2015.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2015

How the slope of the speech spectrum affects the perception of speaker size.

Kodai Yamamoto, Toshio Irino, Ryuichi Nisimura, Hideki Kawahara, Roy D. Patterson

Proceedings of the 16th Annual Conference of the International Speech Communication Association, 2015

2014

Excitation source analysis for high-quality speech manipulation systems based on an interference-free representation of group delay with minimum phase response compensation.

Hideki Kawahara, Masanori Morise, Tomoki Toda, Hideki Banno, Ryuichi Nisimura, Toshio Irino

Proceedings of the 15th Annual Conference of the International Speech Communication Association, 2014

Vocal tract length estimation based on vowels using a database consisting of 385 speakers and a database with MRI-based vocal tract shape information.

Hideki Kawahara, Tatsuya Kitamura, Hironori Takemoto, Ryuichi Nisimura, Toshio Irino

Proceedings of the 15th Annual Conference of the International Speech Communication Association, 2014

Proposal for an Interactive 3D Sound Playback Interface Controlled by User behavior.

Ryuichi Nisimura, Kazuki Hashimoto, Hideki Kawahara, Toshio Irino

Proceedings of the HCI International 2014 - Posters' Extended Abstracts, 2014

Development of a Mobile Application for Crowdsourcing the Data Collection of Environmental Sounds.

Minori Matsuyama, Ryuichi Nisimura, Hideki Kawahara, Junnosuke Yamada, Toshio Irino

Proceedings of the Human Interface and the Management of Information. Information and Knowledge Design and Evaluation, 2014

Hearing impairment simulator based on compressive gammachirp filter.

Misaki Nagae, Toshio Irino, Ryuichi Nisimura, Hideki Kawahara, Roy D. Patterson

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2014

Automatic scoring method for open answer task in the SJ-CAT speaking test considering utterance difficulty level.

Hao Lu, Takeshi Yamada, Shingo Imai, Takahiro Shinozaki, Ryuichi Nisimura, Kenkichi Ishizuka, Shoji Makino, Nobuhiko Kitawaki

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2014

Excitation source design for high-quality speech manipulation systems based on a temporally static group delay representation of periodic signals.

Hideki Kawahara, Masanori Morise, Tomoki Toda, Hideki Banno, Ryuichi Nisimura, Toshio Irino

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2014

2013

Controlling "shout" expression in a Japanese POP singing performance: analysis and suppression study.

Yuri Nishigaki, Ken-Ichi Sakakibara, Masanori Morise, Ryuichi Nisimura, Toshio Irino, Hideki Kawahara

Proceedings of the 14th Annual Conference of the International Speech Communication Association, 2013

Beyond bandlimited sampling of speech spectral envelope imposed by the harmonic structure of voiced sounds.

Hideki Kawahara, Masanori Morise, Tomoki Toda, Ryuichi Nisimura, Toshio Irino

Proceedings of the 14th Annual Conference of the International Speech Communication Association, 2013

Higher order waveform symmetry measure and its application to periodicity detectors for speech and singing with fine temporal resolution.

Hideki Kawahara, Masanori Morise, Ryuichi Nisimura, Toshio Irino

Proceedings of the IEEE International Conference on Acoustics, 2013

Vocal tract length estimation for voiced and whispered speech using gammachirp filterbank.

Toshio Irino, Erika Okamoto, Ryuichi Nisimura, Hideki Kawahara

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2013

2012

Deviation measure of waveform symmetry and its application to high-speed and temporally-fine F0 extraction for vocal sound texture manipulation.

Hideki Kawahara, Masanori Morise, Ryuichi Nisimura, Toshio Irino

Proceedings of the 13th Annual Conference of the International Speech Communication Association, 2012

Open answer scoring for S-CAT automated speaking test system using support vector regression.

Yutaka Ono, Misuzu Otake, Takahiro Shinozaki, Ryuichi Nisimura, Takeshi Yamada, Kenkichi Ishizuka, Yasuo Horiuchi, Shingo Kuroiwa, Shingo Imai

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2012

Detecting child speaker based on auditory feature vectors for VTL estimation.

Ryuichi Nisimura, Shoko Miyamori, Erika Okamoto, Hideki Kawahara, Toshio Irino

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2012

Modulation transfer function design for a flexible cross synthesis VOCODER based on F0 adaptive spectral envelope recovery.

Taiki Nishi, Ryuichi Nisimura, Toshio Irino, Hideki Kawahara

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2012

An interference-free representation of group delay for periodic signals.

Hideki Kawahara, Masanori Morise, Ryuichi Nisimura, Toshio Irino

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2012

2011

Auditory Filterbank Improves Voice Morphing.

Erika Okamoto, Toshio Irino, Ryuichi Nisimura, Hideki Kawahara

Proceedings of the 12th Annual Conference of the International Speech Communication Association, 2011

Development of Web-Based Voice Interface to Identify Child Users Based on Automatic Speech Recognition System.

Ryuichi Nisimura, Shoko Miyamori, Lisa Kurihara, Hideki Kawahara, Toshio Irino

Proceedings of the Human-Computer Interaction. Users and Applications, 2011

2010

Simplification and extension of non-periodic excitation source representations for high-quality speech manipulation systems.

Hideki Kawahara, Masanori Morise, Toru Takahashi, Hideki Banno, Ryuichi Nisimura, Toshio Irino

Proceedings of the 11th Annual Conference of the International Speech Communication Association, 2010

High-quality and light-weight voice transformation enabling extrapolation without perceptual and objective breakdown.

Hideki Kawahara, Ryuichi Nisimura, Toshio Irino, Masanori Morise, Toru Takahashi, Hideki Banno

Proceedings of the IEEE International Conference on Acoustics, 2010

2009

A Web-based Multilingual Utterance Collection System for the Medical Field.

Takashi Yoshino, Taku Fukushima, Ryuichi Nisimura

Proceedings of the WEBIST 2009, 2009

A bottom-up procedure to extract periodicity structure of voiced sounds and its application to represent and restoration of pathological voices.

Hanae Itagaki, Masanori Morise, Ryuichi Nisimura, Toshio Irino, Hideki Kawahara

Proceedings of the Sixth International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications, 2009

Observation of empirical cumulative distribution of vowel spectral distances and its application to vowel based voice conversion.

Hideki Kawahara, Masanori Morise, Toru Takahashi, Hideki Banno, Ryuichi Nisimura, Toshio Irino

Proceedings of the 10th Annual Conference of the International Speech Communication Association, 2009

Temporally variable multi-aspect auditory morphing enabling extrapolation without objective and perceptual breakdown.

Hideki Kawahara, Ryuichi Nisimura, Toshio Irino, Masanori Morise, Toru Takahashi, Hideki Banno

Proceedings of the IEEE International Conference on Acoustics, 2009

Development of Speech Input Method for Interactive VoiceWeb Systems.

Ryuichi Nisimura, Jumpei Miyake, Hideki Kawahara, Toshio Irino

Proceedings of the Human-Computer Interaction. Novel Interaction Methods and Techniques, 2009

2008

Development, Long-Term Operation and Portability of a Real-Environment Speech-Oriented Guidance System.

Tobias Cincarek, Hiromichi Kawanami, Ryuichi Nisimura, Akinobu Lee, Hiroshi Saruwatari, Kiyohiro Shikano

IEICE Trans. Inf. Syst., 2008

Speech-to-text input method for web system using JavaScript.

Ryuichi Nisimura, Jumpei Miyake, Hideki Kawahara, Toshio Irino

Proceedings of the 2008 IEEE Spoken Language Technology Workshop, 2008

Spectral envelope recovery beyond the nyquist limit for high-quality manipulation of speech sounds.

Hideki Kawahara, Masanori Morise, Hideki Banno, Toru Takahashi, Ryuichi Nisimura, Toshio Irino

Proceedings of the 9th Annual Conference of the International Speech Communication Association, 2008

Tandem-STRAIGHT: A temporally stable power spectral representation for periodic signals and applications to interference-free spectrum, F0, and aperiodicity estimation.

Hideki Kawahara, Masanori Morise, Toru Takahashi, Ryuichi Nisimura, Toshio Irino, Hideki Banno

Proceedings of the IEEE International Conference on Acoustics, 2008

2007

Insights Gained from Development and Long-Term Operation of a Real-Environment Speech-Oriented Guidance System.

Tobias Cincarek, Ryuichi Nisimura, Akinobu Lee, Kiyohiro Shikano

Proceedings of the IEEE International Conference on Acoustics, 2007

2006

Humanoid with Interaction Ability Using Vision and Speech Information.

Junichi Ido, Yoshio Matsumoto, Tsukasa Ogasawara, Ryuichi Nisimura

Proceedings of the 2006 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2006

Analyzing dialogue data for real-world emotional speech classification.

Ryuichi Nisimura, Souji Omae, Hideki Kawahara, Toshio Irino

Proceedings of the Ninth International Conference on Spoken Language Processing, 2006

2005

Operating a public spoken guidance system in real environment.

Ryuichi Nisimura, Akinobu Lee, Masashi Yamada, Kiyohiro Shikano

Proceedings of the 9th European Conference on Speech Communication and Technology, 2005

2004

Noise robust real world spoken dialogue system using GMM based rejection of unintended inputs.

Akinobu Lee, Keisuke Nakamura, Ryuichi Nisimura, Hiroshi Saruwatari, Kiyohiro Shikano

Proceedings of the 8th International Conference on Spoken Language Processing, 2004

Public speech-oriented guidance system with adult and child discrimination capability.

Ryuichi Nisimura, Akinobu Lee, Hiroshi Saruwatari, Kiyohiro Shikano

Proceedings of the 2004 IEEE International Conference on Acoustics, 2004

2002

ASKA: receptionist robot with speech dialogue system.

Ryuichi Nisimura, Takashi Uchida, Akinobu Lee, Hiroshi Saruwatari, Kiyohiro Shikano, Yoshio Matsumoto

Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and Systems, Lausanne, Switzerland, September 30, 2002

2001

Automatic n-gram language model creation from web resources.

Ryuichi Nisimura, Kumiko Komatsu, Yuka Kuroda, Kentaro Nagatomo, Akinobu Lee, Hiroshi Saruwatari, Kiyohiro Shikano

Proceedings of the EUROSPEECH 2001 Scandinavia, 2001