World's Best Scientists 2026 revealed!
Hiroshi Saruwatari

Hiroshi Saruwatari

D-Index & Metrics

Computer Science

D-Index
41
Citations
8948
World Ranking
8701
National Ranking
116

Hiroshi Saruwatari publication distribution in Computer Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Computer Science in 2026. The highlighted bar marks where Hiroshi Saruwatari sits on this spectrum.

32–41 publications: 7 scientists 42–51 publications: 22 scientists 52–61 publications: 82 scientists 62–71 publications: 134 scientists 72–81 publications: 249 scientists 82–91 publications: 324 scientists 92–101 publications: 421 scientists 102–111 publications: 420 scientists 112–121 publications: 497 scientists 122–131 publications: 544 scientists 132–141 publications: 555 scientists 142–151 publications: 609 scientists 152–161 publications: 559 scientists 162–171 publications: 534 scientists 172–181 publications: 556 scientists 182–191 publications: 583 scientists 192–201 publications: 519 scientists 202–211 publications: 508 scientists 212–221 publications: 490 scientists 222–231 publications: 437 scientists 232–241 publications: 423 scientists 242–251 publications: 408 scientists 252–261 publications: 377 scientists 262–271 publications: 301 scientists 272–281 publications: 335 scientists 282–291 publications: 320 scientists 292–301 publications: 293 scientists 302–311 publications: 250 scientists 312–321 publications: 238 scientists 322–331 publications: 206 scientists 332–341 publications: 209 scientists 342–351 publications: 208 scientists 352–361 publications: 162 scientists 362–371 publications: 176 scientists 372–381 publications: 127 scientists 382–391 publications: 158 scientists 392–401 publications: 128 scientists 402–411 publications: 104 scientists 412–421 publications: 94 scientists 422–431 publications: 99 scientists 432–441 publications: 83 scientists 442–451 publications: 108 scientists 452–461 publications: 73 scientists 462–471 publications: 77 scientists 472–481 publications: 69 scientists 482–491 publications: 84 scientists 492–501 publications: 62 scientists 502–511 publications: 54 scientists 512–521 publications: 57 scientists 522–531 publications: 51 scientists 532–541 publications: 51 scientists 542–551 publications: 32 scientists 552–561 publications: 38 scientists 562–571 publications: 28 scientists 572–581 publications: 43 scientists 582–591 publications: 33 scientists 592–601 publications: 41 scientists 602–611 publications: 32 scientists 612–621 publications: 28 scientists 622–631 publications: 25 scientists 632–641 publications: 27 scientists 642–651 publications: 17 scientists 652–661 publications: 20 scientists 662–671 publications: 17 scientists 672–681 publications: 15 scientists 682–691 publications: 14 scientists 692–701 publications: 21 scientists 702–711 publications: 13 scientists 712–721 publications: 12 scientists 722–731 publications: 19 scientists 732–741 publications: 14 scientists 742–751 publications: 12 scientists 752–761 publications: 10 scientists 762–771 publications: 10 scientists 772–781 publications: 11 scientists 782–791 publications: 10 scientists 792–801 publications: 11 scientists 802–811 publications: 8 scientists 812–821 publications: 8 scientists 822–831 publications: 7 scientists 832–841 publications: 11 scientists 842–851 publications: 10 scientists 852–861 publications: 5 scientists 862–871 publications: 9 scientists 872–881 publications: 4 scientists 882–891 publications: 6 scientists 892–901 publications: 3 scientists 902–911 publications: 6 scientists 912–921 publications: 3 scientists 922–931 publications: 2 scientists 932–941 publications: 2 scientists 942–951 publications: 2 scientists 952–961 publications: 3 scientists 962–971 publications: 3 scientists 972–981 publications: 3 scientists 982–990 publications: 5 scientists 991+ publications: 100 scientists
32 publications 991+

This scientist: 665 publications — 97th percentile

97% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 991 publications or more.

Hiroshi Saruwatari D-index placement in Computer Science in 2026

The chart shows the D-index (discipline H-index) distribution of Computer Science scientists ranked by Research.com in 2026. The highlighted bar marks where Hiroshi Saruwatari sits on this spectrum.

30–31 D-Index: 879 scientists 32–33 D-Index: 983 scientists 34–35 D-Index: 918 scientists 36–37 D-Index: 990 scientists 38–39 D-Index: 968 scientists 40–41 D-Index: 907 scientists 42–43 D-Index: 821 scientists 44–45 D-Index: 763 scientists 46–47 D-Index: 689 scientists 48–49 D-Index: 543 scientists 50–51 D-Index: 543 scientists 52–53 D-Index: 518 scientists 54–55 D-Index: 500 scientists 56–57 D-Index: 458 scientists 58–59 D-Index: 400 scientists 60–61 D-Index: 337 scientists 62–63 D-Index: 308 scientists 64–65 D-Index: 292 scientists 66–67 D-Index: 249 scientists 68–69 D-Index: 213 scientists 70–71 D-Index: 192 scientists 72–73 D-Index: 189 scientists 74–75 D-Index: 165 scientists 76–77 D-Index: 139 scientists 78–79 D-Index: 119 scientists 80–81 D-Index: 121 scientists 82–83 D-Index: 113 scientists 84–85 D-Index: 88 scientists 86–87 D-Index: 87 scientists 88–89 D-Index: 75 scientists 90–91 D-Index: 69 scientists 92–93 D-Index: 57 scientists 94–95 D-Index: 46 scientists 96–97 D-Index: 38 scientists 98–99 D-Index: 34 scientists 100–101 D-Index: 36 scientists 102–103 D-Index: 27 scientists 104–105 D-Index: 37 scientists 106–107 D-Index: 18 scientists 108–109 D-Index: 31 scientists 110–111 D-Index: 19 scientists 112–113 D-Index: 16 scientists 114–115 D-Index: 12 scientists 116–117 D-Index: 20 scientists 118–119 D-Index: 15 scientists 120–121 D-Index: 5 scientists 122–123 D-Index: 20 scientists 124–125 D-Index: 8 scientists 126–127 D-Index: 5 scientists 128–129 D-Index: 7 scientists 130 D-Index: 3 scientists 131+ D-Index: 98 scientists
30 D-Index 131+

This scientist: 41 D-Index — 40th percentile

40% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 131 D-Index or more.

Overview

Hiroshi Saruwatari is affiliated with the University of Tokyo in Japan and has contributed extensively to the field of computer science, focusing primarily on signal processing and artificial intelligence. Their research encompasses various subfields including computational mechanics, computer vision and pattern recognition, and cognitive neuroscience.

The scientist's main research topics center around speech and audio processing, speech recognition and synthesis, as well as music and audio processing. Additional areas of focus include blind source separation techniques, advanced adaptive filtering techniques, speech and dialogue systems, and natural language processing techniques.

Among recent significant papers authored or co-authored by Saruwatari are:

  • UTMOS: UTokyo-SaruLab System for VoiceMOS Challenge 2022, 2022, Interspeech 2022
  • Spatial Active Noise Control Based on Kernel Interpolation of Sound Field, 2021, IEEE/ACM Transactions on Audio Speech and Language Processing
  • JSUT and JVS: Free Japanese voice corpora for accelerating speech synthesis research, 2020, Nippon Onkyo Gakkaishi/Acoustical Science and Technology/Nihon Onkyo Gakkaishi
  • Directionally Weighted Wave Field Estimation Exploiting Prior Information on Source Direction, 2021, IEEE Transactions on Signal Processing
  • Multichannel Blind Source Separation Based on Evanescent-Region-Aware Non-Negative Tensor Factorization in Spherical Harmonic Domain, 2020, IEEE/ACM Transactions on Audio Speech and Language Processing

Frequent co-authors collaborating with Saruwatari include Shinnosuke Takamichi, Tomohiko Nakamura, Norihiro Takamune, Shoichi Koyama, and Daichi Kitamura.

The publication venues where Saruwatari has contributed most frequently are:

  • arXiv (Cornell University)
  • IEEE/ACM Transactions on Audio Speech and Language Processing
  • Interspeech 2022
  • IEICE Transactions on Information and Systems
  • Speech Communication

Saruwatari's research output reflects an interdisciplinary approach to signal processing and artificial intelligence, with various contributions advancing knowledge in speech synthesis, audio processing, and adaptive filtering methods. Their work forms part of the broader computer science discipline with a strong focus on audio and speech technologies.

Best Publications

  • The fundamental limitation of frequency domain blind source separation for convolutive mixtures of speech

    S. Araki;R. Mukai;S. Makino;T. Nishikawa

  • Determined blind source separation unifying independent vector analysis and nonnegative matrix factorization

    Daichi Kitamura;Nobutaka Ono;Hiroshi Sawada;Hirokazu Kameoka

  • Evaluation of blind signal separation method using directivity pattern under reverberant conditions

    S. Kurita;H. Saruwatari;S. Kajita;K. Takeda

  • Blind source separation combining independent component analysis and beamforming

    Hiroshi Saruwatari;Satoshi Kurita;Kazuya Takeda;Fumitada Itakura

  • Statistical Parametric Speech Synthesis Incorporating Generative Adversarial Networks

    Yuki Saito;Shinnosuke Takamichi;Hiroshi Saruwatari

  • Blind source separation based on a fast-convergence algorithm combining ICA and beamforming

    H. Saruwatari;T. Kawamura;T. Nishikawa;A. Lee

  • Speaking-aid systems using GMM-based voice conversion for electrolaryngeal speech

    Keigo Nakamura;Tomoki Toda;Hiroshi Saruwatari;Kiyohiro Shikano

  • Voice conversion algorithm based on Gaussian mixture model with dynamic frequency warping of STRAIGHT spectrum

    T. Toda;H. Saruwatari;K. Shikano

  • Blind Spatial Subtraction Array for Speech Enhancement in Noisy Environment

    Y. Takahashi;T. Takatani;K. Osako;H. Saruwatari

  • Maximum Likelihood Voice Conversion Based on GMM with STRAIGHT Mixed Excitation

    Yamato Ohtani;Tomoki Toda;Hiroshi Saruwatari;Kiyohiro Shikano

  • A review of blind source separation methods: two converging routes to ILRMA originating from ICA and NMF

    Hiroshi Sawada;Nobutaka Ono;Hirokazu Kameoka;Daichi Kitamura

  • GMM-Based Voice Conversion Applied to Emotional Speech Synthesis

    Hiromichi Kawanami;Yohei Iwami;Tomoki Toda;Hiroshi Saruwatari

  • Equivalence between frequency-domain blind source separation and frequency-domain adaptive beamforming for convolutive mixtures

    Shoko Araki;Shoji Makino;Yoichi Hinamoto;Ryo Mukai

  • Fundamental limitation of frequency domain blind source separation for convolutive mixture of speech

    S. Araki;S. Makino;T. Nishikawa;H. Saruwatari

  • JSUT corpus: free large-scale Japanese speech corpus for end-to-end speech synthesis

    Ryosuke Sonobe;Shinnosuke Takamichi;Hiroshi Saruwatari

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

    R. Nisimura;A. Lee;H. Saruwatari;K. Shikano

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

    Akinobu Lee;Keisuke Nakamura;Ryuichi Nisimura;Hiroshi Saruwatari

  • Musical-Noise-Free Speech Enhancement Based on Optimized Iterative Spectral Subtraction

    R. Miyazaki;H. Saruwatari;T. Inoue;Y. Takahashi

  • Automatic optimization scheme of spectral subtraction based on musical noise assessment via higher-order statistics

    Yoshihisa Uemura;Yu Takahashi;Hiroshi Saruwatari;Kiyohiro Shikano

  • Sound Field Recording Using Distributed Microphones Based on Harmonic Analysis of Infinite Order

    Natsuki Ueno;Shoichi Koyama;Hiroshi Saruwatari

  • Low-delay voice conversion based on maximum likelihood estimation of spectral parameter trajectory.

    Takashi Muramatsu;Yamato Ohtani;Tomoki Toda;Hiroshi Saruwatari

Frequent Co-Authors

Kiyohiro Shikano
Kiyohiro Shikano Nara Institute of Science and Technology
Tomoki Toda
Tomoki Toda Nagoya University
Nobutaka Ono
Nobutaka Ono Tokyo Metropolitan University
Shoji Makino
Shoji Makino Waseda University
Satoshi Nakamura
Satoshi Nakamura Nara Institute of Science and Technology
Kazuya Takeda
Kazuya Takeda Nagoya University
Shoko Araki
Shoko Araki NTT (Japan)
Hirokazu Kameoka
Hirokazu Kameoka NTT (Japan)
Hiroshi Sawada
Hiroshi Sawada NTT (Japan)

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