Multilingual Speech Recognition Platform - Dual Channel Speech Recognition System|NTT R&D Website
Multilingual Speech Recognition Platform - Dual Channel Speech Recognition System|NTT R&D Website
https://www.rd.ntt/e/research/HI0002.html
Speech Recognition for Computers | NTT Communication Science Laboratories | NTT R&D Website
Speech Recognition for Computers | NTT Communication Science Laboratories | NTT R&D Website NTT R
https://www.rd.ntt/e/cs/team_project/media/signal/research_media05.html
Speech Recognition Technologies for Creating Knowledge Resources from Communications|NTT R&D Website
Speech Recognition Technologies for Creating Knowledge Resources from Communications|NTT R&D
https://www.rd.ntt/e/research/JN202010_7482.html
Tomohiro Nakatani | NTT R&D Website
/center/dept Audio and speech signal processing for capturing and recognition of human conversations The
https://www.rd.ntt/e/organization/researcher/superior/s_012.html
poster_en_21.pdf
our speech processing technologies developed for conversational speech recognition. Specifically, our
https://www.rd.ntt/cs/event/openhouse/2017/exhibition/21/poster_en_21.pdf
NTT Communication Science Laboratories Open House 2014 Defeat reverberation: enemy of speech recognition - Advanced speech enhancement and recognition -
recognition - Advanced speech enhancement and recognition - 日本語 English Home Greeting Program Presentations
https://www.rd.ntt/cs/event/openhouse/2014/exhibition/20/index_en.html
スライド 1
Learning speech recognition from small paired data - Semi-supervised end-to-end training with text-to
https://www.rd.ntt/cs/event/openhouse/2019/download/16_c_en.pdf
poster_en_20.pdf
speech recognition is used more and more often in our everyday life. However, the accuracy of speech
https://www.rd.ntt/cs/event/openhouse/2017/exhibition/20/poster_en_20.pdf
NTT Communication Science Laboratories Open House 2016
and signal processing that are making speech recognition leap forward - Takuya Yoshioka, Media
https://www.rd.ntt/cs/event/openhouse/2016/talk/research1/index_en.html
poster_en_19.pdf
Speech Recognition: Support 10 languages in Asia-Pacific region, using DNN structure robust for noisy
https://www.rd.ntt/cs/event/openhouse/2017/exhibition/19/poster_en_19.pdf
Speech information processing | NTT R&D Website
processing technology handles speech as signal data for analysis and processing, such as recognition and
https://www.rd.ntt/e/hil/category/voice/
中谷 智広 | NTT R&D Website
Recognition and Understanding Workshop (ASRU) Best Paper Award Honarable Mention 2015年 3rd CHiME Speech
https://www.rd.ntt/organization/researcher/superior/s_012.html
NTT Communication Science Laboratories Open House 2014 How accurate are speech recognition results? - Estimating speech recognition accuracy without references -
NTT Communication Science Laboratories Open House 2014 How accurate are speech recognition results
https://www.rd.ntt/cs/event/openhouse/2014/exhibition/21/index_en.html
poster_en.pdf
lectures by using speech recognition and machine translation technology. The system allows non-native
https://www.rd.ntt/cs/event/openhouse/2016/exhibition/23/poster_en.pdf
WPE speech dereverberation
with advanced speech enhancement and recognition technologies for the REVERB challenge," in Proceedings
https://www.rd.ntt/cs/team_project/media/signal/wpe/references.html
NTT Communication Science Laboratories Open House 2019
Learning speech recognition from small paired data - Semi-supervised end-to-end training with text-to
https://www.rd.ntt/cs/event/openhouse/2019/exhibition16/index_en.html
Microsoft Word - IWANNCE33_final.doc
Energy Operator in advancing the noise robustness of speech recognition front-end. The presented method
https://www.rd.ntt/cs/team_project/icl/signal/iwaenc03/cdrom/data/0033.pdf
NTT Communication Science Laboratories Open House 2017
Exhibition Program 21 Turn-taking matters in conversation recognition Robust speech processing using speakers
https://www.rd.ntt/cs/event/openhouse/2017/exhibition/21/index_en.html
Microsoft Word - paper0048.doc
presented. The method is effective for automatic speech recognition under conditions of multiple sound
https://www.rd.ntt/cs/team_project/icl/signal/iwaenc03/cdrom/data/0048.pdf
Marc Delcroix | NTT R&D Website
2015 Best Paper Award Honorable Mention at the 2015 IEEE Automatic Speech Recognition and Understanding
https://www.rd.ntt/e/organization/researcher/special/s_033.html
音声情報処理 | NTT R&D Website
, Marc Delcroix, Takahiro Shinozaki, "Streaming End-to-End Target-Speaker Automatic Speech Recognition
https://www.rd.ntt/hil/category/voice/
NTT Communication Science Laboratories Open House 2017
recognition Abstract Automatic speech recognition is used more and more often in our everyday life. However
https://www.rd.ntt/cs/event/openhouse/2017/exhibition/20/index_en.html
NTT Communication Science Laboratories Open House 2015
Extracting essential information from sounds - Advances in distant speech recognition by deep learning
https://www.rd.ntt/cs/event/openhouse/2015/exhibition/20/index_en.html
Signal Processing Research Group | NTT Communication Science Laboratories | NTT R&D Website
Digital Signal Processing technology, we are researching speech recognition technology, acoustic signal
https://www.rd.ntt/e/cs/team_project/media/signal/
pp.dvi
-independent system. The first assumption, domi- nant in the speech and speaker recognition literature todate
https://www.rd.ntt/cs/team_project/icl/signal/ica2003/cdrom/data/0177.pdf
D01-03-e.pdf
speech recognition technology for instant information grasp and decision-making support #Productivity
https://www.rd.ntt/forum/2024/doc/D01-03-e.pdf
poster_en18.pdf
and formally uttered. However, the recognition of casual speech is still a challenging task since
https://www.rd.ntt/cs/event/openhouse/2013/exhibition/media6/poster_en18.pdf
信号処理研究グループ|NTTコミュニケーション科学基礎研究所|NTT R&D Website
Speech Enhancement Errors on Speech Recognition Performance. IEEE/ACM Transactions on Audio, Speech, and
https://www.rd.ntt/cs/team_project/media/signal/
NTT Communication Science Laboratories Open House 2013 Transcribing every word whoever speaks - Speech recognizers robust to casual speech variations -
speech recognition is considered to be a mature technology that can accurately recognize sentences that
https://www.rd.ntt/cs/event/openhouse/2013/exhibition/media6/index_en.html
"Speech Enhancement based on Linear Prediction Error Signals and Spectral Subtraction"
@pino.datsi.fi.upm.es Abstract Speech processing and recognition are key technologies to produce smart
https://www.rd.ntt/cs/team_project/icl/signal/iwaenc03/cdrom/data/0077.pdf
iwaenc03-bp.dvi
front-end of the speech recognition system was confirmed. However, the model estimates direction of
https://www.rd.ntt/cs/team_project/icl/signal/iwaenc03/cdrom/data/0066.pdf
Media Information Laboratory | NTT Communication Science Laboratories | NTT R&D Website
, "Frontend Token Enhancement for Token-Based Speech Recognition" ・Y. Ren, N. Harada, D. Takeuchi, S. Chen, W
https://www.rd.ntt/e/cs/team_project/media/
0062.pdf
accuracy of an Automatic Speech Recognition (ASR) in comparison to other noise reduction methods. 1
https://www.rd.ntt/cs/team_project/icl/signal/iwaenc03/cdrom/data/0062.pdf
NTT Communication Science Laboratories Open House 2013
multi-speaker conversational speech recognition: past, present and future - Takaaki Hori, Media
https://www.rd.ntt/cs/event/openhouse/2013/talk/research1/index_en.html
Media Information Laboratory Past news | NTT Communication Science Laboratories | NTT R&D Website
Award at the 2025 IEEE Automatic Speech Recognition and Understanding Workshop (ASRU). November 2025 The
https://www.rd.ntt/e/cs/team_project/media/past_news.html
スライド 1
, which offers a way to control the vocal expression of emotion in speech through the facial expression in
https://www.rd.ntt/cs/event/openhouse/2020/download/c_18_en.pdf
Takuhiro Kaneko | NTT R&D Website
speech) in a controllable manner to make it possible to create or convert media as intended. In this page
https://www.rd.ntt/e/organization/researcher/special/s_046.html
Marc Delcroix | NTT R&D Website
: advances in speech enhancement and recognition for mobile multi-microphone devices」" 2016年 音響学会粟屋 潔学術奨励賞受賞
https://www.rd.ntt/organization/researcher/special/s_033.html
0038.pdf
outstanding problem for speech transmission, enhancement and recognition. The variety and the varying nature
https://www.rd.ntt/cs/team_project/icl/signal/iwaenc03/cdrom/data/0038.pdf
0059.pdf
separated speech, and improved accu- racy of automatic phone recognition on target speech. The preemphasis
https://www.rd.ntt/cs/team_project/icl/signal/ica2003/cdrom/data/0059.pdf
WPE speech dereverberation
speech recognition to prevent the prediction filter from distorting your target signal or amplifying
https://www.rd.ntt/cs/team_project/media/signal/wpe/config.html
メディア情報研究部|NTTコミュニケーション科学基礎研究所|NTT R&D Website
. Ochiai, M. Delcroix, "Frontend Token Enhancement for Token-Based Speech Recognition" ・Y. Ren, N. Harada
https://www.rd.ntt/cs/team_project/media/
Thought-processing Technology for Understanding, Reproducing, and Extending Human Thinking Ability|NTT R&D Website
, speech recognition, and thought-enhancing stimulus design are introduced. Kyosuke Nishida, Takeshi
https://www.rd.ntt/e/research/JN202110_15620.html
Main Topics | NTT Communication Science Laboratories | NTT R&D Website
High fidelity color reproduction and analysis Speech Recognition for Computers Listening to human
https://www.rd.ntt/e/cs/research_topic/
NTT Communication Science Laboratories Open House 2017
precisely using LSTM framework 3. Multilingual Speech Recognition: Support 10 languages in Asia-Pacific
https://www.rd.ntt/cs/event/openhouse/2017/exhibition/19/index_en.html
Recognition Research Group | NTT Communication Science Laboratories | NTT R&D Website
Recognition Research Group | NTT Communication Science Laboratories | NTT R&D Website NTT R&D
https://www.rd.ntt/e/cs/team_project/media/recognition/
スライド 1
Voice command and speech communication in car - World’s best voice capture and recognition technologies
https://www.rd.ntt/cs/event/openhouse/2019/download/15_c_en.pdf
poster_en.pdf
). WFST has been successfully utilized in the speech recognition field, where it is shown that it can
https://www.rd.ntt/cs/event/openhouse/2016/exhibition/16/poster_en.pdf
NTT Communication Science Laboratories Open House 2016
Recognizing your voice even in noisy environments - Advances in distant speech recognition technologies
https://www.rd.ntt/cs/event/openhouse/2016/exhibition/19/index_en.html
メディア情報研究部 過去のニュース|NTTコミュニケーション科学基礎研究所|NTT R&D Website
2025/12 【表彰】森谷准特別研究員、小川主任研究員らによる以下の論文が、国際会議 2025 IEEE Automatic Speech Recognition and Understanding
https://www.rd.ntt/cs/team_project/media/past_news.html
Ryo Masumura | NTT R&D Website
training data sets for various media processing including automatic speech recognition and natural language
https://www.rd.ntt/e/organization/researcher/special/s_035.html
NTT Communication Science Laboratories Open House 2019
Voice command and speech communication in car - World’s best voice capture and recognition technologies
https://www.rd.ntt/cs/event/openhouse/2019/exhibition15/index_en.html
NTT Communication Science Laboratories Open House 2014 Program
integration for speech enhancement - Defeat reverberation: enemy of speech recognition - Advanced speech
https://www.rd.ntt/cs/event/openhouse/2014/program_en.html
0056.pdf
-end processing of ASR (Automatic Speech Recognition). AMNOR (Adaptive Microphone-array for NOise
https://www.rd.ntt/cs/team_project/icl/signal/iwaenc03/cdrom/data/0056.pdf
Listening to human speech in noisy reverberant environments | NTT Communication Science Laboratories | NTT R&D Website
automatic speech recognition (ASR) in a real world environment. Although many enhancement methods have
https://www.rd.ntt/e/cs/team_project/media/signal/research_media06.html
NTT Communication Science Laboratories Open House 2018
. For example, in research on speech recognition, we are moving from the situation of a single person
https://www.rd.ntt/cs/event/openhouse/2018/talk/director/index_en.html
poster_en.pdf
between robots to avoid dialogue breakdown. Avoid dialogue breakdown in case of speech recognition error
https://www.rd.ntt/cs/event/openhouse/2016/exhibition/15/poster_en.pdf
NTT Communication Science Laboratories Open House 2019
Learning unknown objects from speech and vision - Crossmodal audio-visual concept discovery - Abstract In
https://www.rd.ntt/cs/event/openhouse/2019/exhibition20/index_en.html
Human Behavior Recognition from Multimodal Information | NTT Communication Science Laboratories | NTT R&D Website
detection from images or videos Speech activity detection from audio signals Facial expression recognition
https://www.rd.ntt/e/cs/team_project/human/resonance/research_human06.html
0037.pdf
performance is illustrated by speech recognition ex- periments on real recordings corrupted by babble noise
https://www.rd.ntt/cs/team_project/icl/signal/ica2003/cdrom/data/0037.pdf
NTT Communication Science Laboratories Open House 2017 Program
speech identification & recognition technology Personalizing your speech recognizer Neural network
https://www.rd.ntt/cs/event/openhouse/2017/program_en.html
Microsoft Word - ica_new.doc
robustness of speech recognition algorithms. However, depending on the type of emotion or task induced stress
https://www.rd.ntt/cs/team_project/icl/signal/ica2003/cdrom/data/0182.pdf
NTT Communication Science Laboratories Open House 2020
in speech through the facial expression in a face image. The proposed system consists of performing
https://www.rd.ntt/cs/event/openhouse/2020/exhibition18/index_en.html
poster_en19.pdf
better at annotating an audio signal than a baseline method. Yasunori Ohishi Media Recognition Research
https://www.rd.ntt/cs/event/openhouse/2013/exhibition/media7/poster_en19.pdf
スライド 1
Learning unknown objects from speech and vision - Crossmodal audio-visual concept discovery - In order for
https://www.rd.ntt/cs/event/openhouse/2019/download/20_c_en.pdf
talk_yoshioka.pdf
, M. Picheny, “The IBM 2015 English conversational telephone speech recognition system,” arXiv:1505
https://www.rd.ntt/cs/event/openhouse/2016/talk/research1/talk_yoshioka.pdf
NTT Communication Science Laboratories Open House 2016 Program
deep learning and signal processing that are making speech recognition leap forward - Takuya Yoshioka
https://www.rd.ntt/cs/event/openhouse/2016/program_en.html
Major issues and research trends in the evolution of artificial intelligence (AI)|NTT R&D Website
to “listen” and “speak,” NTT is conducting case study research on “speech recognition and spoken
https://www.rd.ntt/e/ai/0001.html
Abstracts of plenary talks
environmental noise. In fact, in noisy environments the performance of speech coders or speech recognition
https://www.rd.ntt/cs/team_project/icl/signal/iwaenc03/plenary_abst.html
NTT Communication Science Laboratories Open House 2018
between the speech recognition and synthesis techniques and the human brain mechanisms will be discussed
https://www.rd.ntt/cs/event/openhouse/2018/talk/research4/index_en.html
NTT Communication Science Laboratories Open House 2014
speech intelligibility and automatic speech recognition performance. Even though reverberation is
https://www.rd.ntt/cs/event/openhouse/2014/talk/research2/index_en.html
NTT コミュニケーション科学基礎研究所 オープンハウス2019
. Watanabe, T. Iwata, A. Ogawa, M. Delcroix, “Semi-supervised end-to-end speech recognition,” in Proc
https://www.rd.ntt/cs/event/openhouse/2019/exhibition16/
スライド 1
speech recognition,” in Proc. Interspeech, 2018. [2] S. Karita, S. Watanabe, T. Iwata, M. Delcroix, A
https://www.rd.ntt/cs/event/openhouse/2019/download/16_c.pdf
NTT Communication Science Laboratories Open House 2016
language lectures by using speech recognition and machine translation technology. The system allows non
https://www.rd.ntt/cs/event/openhouse/2016/exhibition/23/index_en.html
poster_23.pdf
誤りから学ぶ音声認識システム ~音声認識のための識別モデル学習法~ Speech Recognition System that Learns from Errors
https://www.rd.ntt/cs/event/openhouse/2011/exhibition/23/poster_23.pdf
F04_leaf_e.pdf
separated without relying on speech recognition, which tends to be less accurate for signals with multiple
https://www.rd.ntt/forum/2023/doc/F04_leaf_e.pdf
P04_leaf_e.pdf
people Speech recognition technology that can operate in real-time at all the times, even on smart
https://www.rd.ntt/forum/2023/doc/P04_leaf_e.pdf
poster_en.pdf
speech recognition, computer vision and AI. However, Deep Learning is time-consuming for the training. In
https://www.rd.ntt/cs/event/openhouse/2016/exhibition/7/poster_en.pdf
Using Neural Networks to Enable Computers to Listen to Voices Selectively as Humans Do | NTT R&D Website
research was on speech recognition, which involved adapting a speech-recognition system to the voice of a
https://www.rd.ntt/e/research/JN202506_34173.html
Demonstration of speech enhancement in highly non-stationary multisource environment (CHiME Challenge)
., Souden, M., Hahm S.-J. and Nakamura, A., ``Speech Recognition in the Presence of Highly Non-Stationary
https://www.rd.ntt/cs/team_project/media/signal/CHiME_demo/
Communication with Desired Voice | NTT R&D Website
combine automatic speech recognition (ASR) and text-to-speech synthesis. This approach uses ASR to
https://www.rd.ntt/e/research/JN202009_6715.html
NTT Communication Science Laboratories Open House 2018
. Reference [1] A. Ogawa, M. Delcroix, S. Karita, T. Nakatani, “Rescoring n-best speech recognition list based
https://www.rd.ntt/cs/event/openhouse/2018/exhibition/17/index_en.html
0078.pdf
SPEECH ENHANCEMENT AND RECOGNITION IN CAR ENVIRONMENT USING BLIND SOURCE SEPARATION AND SUBBAND
https://www.rd.ntt/cs/team_project/icl/signal/ica2003/cdrom/data/0078.pdf
Publications | NTT Communication Science Laboratories | NTT R&D Website
(Japanese only). 「Speech Recognition Algorithms Using Weighted Finite-State Transducers」 WrittenTakaaki Hori
https://www.rd.ntt/e/cs/overview/publications.html
金子 卓弘 | NTT R&D Website
on Pattern Recognition (ICPR 2012) 2017 2016年度 音声研究会 研究奨励賞 2020 令和元年度 東京大学大学院 情報理工学系研究科 研究科長賞 社内表彰
https://www.rd.ntt/organization/researcher/special/s_046.html
NTT Communication Science Laboratories Open House 2013 Program
- Research on multi-speaker conversational speech recognition: past, present and future - Takaaki Hori, Media
https://www.rd.ntt/cs/event/openhouse/2013/program_en.html
poster18.pdf
speech recognition based on WFST structured classifiers and deep bottleneck features,” in Proc. The 38th
https://www.rd.ntt/cs/event/openhouse/2013/exhibition/media6/poster18.pdf
Torch Relay Regional Event × Voice-recognition Communication Technology|NTT R&D Website
Torch Relay Regional Event × Voice-recognition Communication Technology|NTT R&D Website NTT R&D
https://www.rd.ntt/e/research/JN202111_16140.html
メディア認識研究グループ|NTTコミュニケーション科学基礎研究所|NTT R&D Website
in Human Action Recognition. Pattern Recognition, 146. 国際会議予稿 Yu Mitsuzumi, Akisato Kimura, Go Irie
https://www.rd.ntt/cs/team_project/media/recognition/
スライド 1
, M. Delcroix, S. Karita, T. Nakatani, “Rescoring n-best speech recognition list based on one-on-one
https://www.rd.ntt/cs/event/openhouse/2018/exhibition/17/poster_en_17.pdf
NTT Communication Science Laboratories Open House 2019
recognition technologies Learning Speech Recognition from Small Paired Data Semi-supervised end-to-end
https://www.rd.ntt/cs/event/openhouse/2019/program_en.html
iwaenc2003-3.dvi
usually contain reverberation, which degrades speech recognition performance. This is especially severe
https://www.rd.ntt/cs/team_project/icl/signal/iwaenc03/cdrom/data/0049.pdf
A Close Link Between "Hearing" and "Speaking" | NTT Communication Science Laboratories | NTT R&D Website
signals. Future Implications As automatic speech recognition technologies advance, the challenges are
https://www.rd.ntt/e/cs/team_project/human/smr/research_human02.html
複数人会話理解|NTTコミュニケーション科学基礎研究所|NTT R&D Website
Emotion Recognition Based on Large-Scale Automatic Speech Recognizer," Proc. ICASSP, 2025 R. Fukuda et al
https://www.rd.ntt/cs/team_project/media/signal/research_signal03.html
NTT Communication Science Laboratories Open House 2014 Making computers listen to desired sounds anywhere - Probabilistic modeling and integration for speech enhancement -
and reverberation, which degrades both sound quality and speech recognition accuracy. Conventional
https://www.rd.ntt/cs/event/openhouse/2014/exhibition/19/index_en.html
スライド 1
to EUSIPCO2018. [2] K. Tanaka, T. Kaneko, N. Hojo, H. Kameoka, “Synthetic-to-natural speech
https://www.rd.ntt/cs/event/openhouse/2018/exhibition/20/poster_en_20.pdf
Researching AI Technologies to Support and Substitute Human Activities|NTT R&D Website
to achieve the full potential of AI. Taking speech-recognition technology as an example, differences
https://www.rd.ntt/e/research/JN202010_7180.html
Expressive Speech-synthesis Technology Supports People's Daily Lives | NTT R&D Website
researching speech processing ever since my student days. At that time, I was researching speech recognition
https://www.rd.ntt/e/research/JN202504_33343.html
poster_en_17.pdf
interested in developing a pronunciation conversion system that can convert non-native speech into
https://www.rd.ntt/cs/event/openhouse/2017/exhibition/17/poster_en_17.pdf
D01-21-e.pdf
recognition, and speech synthesis, it has become possible for digital humans to respond flexibly according to
https://www.rd.ntt/forum/2024/doc/D01-21-e.pdf