World's Best Scientists 2026 revealed!
Tomohiro Nakatani

Tomohiro Nakatani

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Computer Science
Japan
2025

D-Index & Metrics

Computer Science

D-Index
52
Citations
10861
World Ranking
5078
National Ranking
61

Research.com Recognitions

  • 2025 - Research.com Computer Science in Japan Leader Award
  • 2022 - Research.com Computer Science in Japan Leader Award
  • 2021 - IEEE Fellow For contributions to far-field signal processing for speech enhancement and recognition

Overview

Tomohiro Nakatani is affiliated with NTT in Japan and has a research focus primarily on computer science and medicine. Their work spans multiple subfields including signal processing, computational mechanics, artificial intelligence, surgery, and pathology and forensic medicine.

The scientist's research topics predominantly cover areas such as speech and audio processing, advanced adaptive filtering techniques, blind source separation techniques, speech recognition and synthesis, music and audio processing, spine and intervertebral disc pathology, and musculoskeletal pain and rehabilitation.

Frequent publication venues for their work include:

  • arXiv (Cornell University)
  • IEEE/ACM Transactions on Audio Speech and Language Processing
  • The Spine Journal
  • NTT technical review
  • 2022 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC)

The scientist has coauthored extensively with several researchers, most frequently collaborating with Shoko Araki, Marc Delcroix, Keisuke Kinoshita, Rintaro Ikeshita, and Tsubasa Ochiai.

Notable recent papers include:

  • "Far-Field Automatic Speech Recognition" (2020), Proceedings of the IEEE
  • "Independent Vector Extraction for Fast Joint Blind Source Separation and Dereverberation" (2021), IEEE Signal Processing Letters
  • "A Joint Diagonalization Based Efficient Approach to Underdetermined Blind Audio Source Separation Using the Multichannel Wiener Filter" (2021), IEEE/ACM Transactions on Audio Speech and Language Processing
  • "Block Coordinate Descent Algorithms for Auxiliary-Function-Based Independent Vector Extraction" (2021), IEEE Transactions on Signal Processing
  • "End-to-End Dereverberation, Beamforming, and Speech Recognition with Improved Numerical Stability and Advanced Frontend" (2021), arXiv (Cornell University)

Tomohiro Nakatani was recognized as an IEEE Fellow in 2021 for contributions to far-field signal processing for speech enhancement and recognition.

Best Publications

  • Speech Dereverberation Based on Variance-Normalized Delayed Linear Prediction

    Tomohiro Nakatani;Takuya Yoshioka;Keisuke Kinoshita;Masato Miyoshi

  • The reverb challenge: Acommon evaluation framework for dereverberation and recognition of reverberant speech

    Keisuke Kinoshita;Marc Delcroix;Takuya Yoshioka;Tomohiro Nakatani

  • A summary of the REVERB challenge: state-of-the-art and remaining challenges in reverberant speech processing research

    Keisuke Kinoshita;Marc Delcroix;Sharon Gannot;Emanuël A. P. Habets

  • Making Machines Understand Us in Reverberant Rooms: Robustness Against Reverberation for Automatic Speech Recognition

    Takuya Yoshioka;A. Sehr;M. Delcroix;K. Kinoshita

  • Generalization of Multi-Channel Linear Prediction Methods for Blind MIMO Impulse Response Shortening

    T. Yoshioka;T. Nakatani

  • The NTT CHiME-3 system: Advances in speech enhancement and recognition for mobile multi-microphone devices

    Takuya Yoshioka;Nobutaka Ito;Marc Delcroix;Atsunori Ogawa

  • Suppression of Late Reverberation Effect on Speech Signal Using Long-Term Multiple-step Linear Prediction

    K. Kinoshita;M. Delcroix;T. Nakatani;M. Miyoshi

  • Robust MVDR beamforming using time-frequency masks for online/offline ASR in noise

    Takuya Higuchi;Nobutaka Ito;Takuya Yoshioka;Tomohiro Nakatani

  • SpeakerBeam: Speaker Aware Neural Network for Target Speaker Extraction in Speech Mixtures

    Katerina Zmolikova;Marc Delcroix;Keisuke Kinoshita;Tsubasa Ochiai

  • Improving transformer-based end-to-end speech recognition with connectionist temporal classification and language model integration

    Shigeki Karita;Nelson Enrique Yalta Soplin;Shinji Watanabe;Marc Delcroix

  • Blind Separation and Dereverberation of Speech Mixtures by Joint Optimization

    Takuya Yoshioka;Tomohiro Nakatani;Masato Miyoshi;Hiroshi G Okuno

  • Single Channel Target Speaker Extraction and Recognition with Speaker Beam

    Marc Delcroix;Katerina Zmolikova;Keisuke Kinoshita;Atsunori Ogawa

  • Blind speech dereverberation with multi-channel linear prediction based on short time fourier transform representation

    T. Nakatani;T. Yoshioka;K. Kinoshita;M. Miyoshi

  • Speech Processing for Digital Home Assistants: Combining signal processing with deep-learning techniques

    Reinhold Haeb-Umbach;Shinji Watanabe;Tomohiro Nakatani;Michiel Bacchiani

  • Speaker-Aware Neural Network Based Beamformer for Speaker Extraction in Speech Mixtures.

    Kateřina Žmolíková;Marc Delcroix;Keisuke Kinoshita;Takuya Higuchi

  • A Multichannel MMSE-Based Framework for Speech Source Separation and Noise Reduction

    Mehrez Souden;Shoko Araki;Keisuke Kinoshita;Tomohiro Nakatani

  • Improving Speaker Discrimination of Target Speech Extraction With Time-Domain Speakerbeam

    Marc Delcroix;Tsubasa Ochiai;Katerina Zmolikova;Keisuke Kinoshita

  • Exploring multi-channel features for denoising-autoencoder-based speech enhancement

    Shoko Araki;Tomoki Hayashi;Marc Delcroix;Masakiyo Fujimoto

  • Blind dereverberation of single channel speech signal based on harmonic structure

    T. Nakatani;M. Miyoshi

  • Online MVDR Beamformer Based on Complex Gaussian Mixture Model With Spatial Prior for Noise Robust ASR

    Takuya Higuchi;Nobutaka Ito;Shoko Araki;Takuya Yoshioka

  • Low-Latency Real-Time Meeting Recognition and Understanding Using Distant Microphones and Omni-Directional Camera

    T. Hori;S. Araki;T. Yoshioka;M. Fujimoto

Frequent Co-Authors

Marc Delcroix
Marc Delcroix NTT (Japan)
Shoko Araki
Shoko Araki NTT (Japan)
Takuya Yoshioka
Takuya Yoshioka Microsoft (United States)
Shinji Watanabe
Shinji Watanabe Carnegie Mellon University
Reinhold Haeb-Umbach
Reinhold Haeb-Umbach University of Paderborn
Hiroshi G. Okuno
Hiroshi G. Okuno Waseda University
Hiroshi Sawada
Hiroshi Sawada NTT (Japan)
Shoji Makino
Shoji Makino Waseda University
Walter Kellermann
Walter Kellermann University of Erlangen-Nuremberg

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