Journal Papers


  • Natsuki Ueno, Shoichi Koyama, and Hiroshi Saruwatari,
    "Convex and differentiable formulation for inverse problems in Hilbert spaces with nonlinear clipping effects,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (in press).
    [link]
  • Natsuki Ueno, Shoichi Koyama, and Hiroshi Saruwatari,
    "Directionally weighted sound field estimation exploiting prior information on source direction,"
    IEEE Transactions on Signal Processing, vol. 69, pp. 2383-2395, April 2021.
    [link]
  • Yuta Takida, Shoichi Koyama, Natsuki Ueno, and Hiroshi Saruwatari,
    "Reciprocity gap functional in spherical harmonic domain for gridless sound field decomposition,"
    Elsevier Signal Processing, vol. 169, April 2020.
    [link]
  • Natsuki Ueno, Shoichi Koyama, and Hiroshi Saruwatari,
    "Three-dimensional sound field reproduction based on weighted mode-matching method,"
    IEEE/ACM Transactions on Audio, Speech, and Language Processing, vol. 27, no. 12, pp. 1852-1867, December 2019.
    (IEEE SPS Japan Student Journal Paper Award)
    [link]

Letters


  • Natsuki Ueno, Shoichi Koyama, and Hiroshi Saruwatari,
    "Sound field recording using distributed microphones based on harmonic analysis of infinite order,"
    IEEE Signal Processing Letters, vol. 25, no. 1, pp. 135-139, January 2018.
    [link] [code]

International Conferences


  • Shoichi Koyama, Takashi Amakasu, Natsuki Ueno, and Hiroshi Saruwatari,
    "Amplitude matching: majorization minimization algorithm for sound field control only with amplitude constraint,"
    in Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2021 (to appear).
  • Tomoya Nishida, Natsuki Ueno, Shoichi Koyama, and Hiroshi Saruwatari,
    "Sensor placement in arbitrarily restricted region for field estimation based on Gaussian process,"
    in Proceedings of European Signal Processing Conference (EUSIPCO), Hangzhou, January 2021.
    [link]
  • Juliano G. C. Ribeiro, Natsuki Ueno, Shoichi Koyama, and Hiroshi Saruwatari,
    "Kernel interpolation of acoustic transfer function between regions considering reciprocity,"
    in Proceedings of IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), Amsterdam, June 2020.
    [link]
  • Kentaro Ariga, Tomoya Nishida, Shoichi Koyama, Natsuki Ueno, and Hiroshi Saruwatari,
    "Mutual-information-based sensor placement for spatial sound field recording,"
    in Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Barcelona, May 2020, pp. 166-170.
    [link]
  • Hayato Ito, Shoichi Koyama, Natsuki Ueno, and Hiroshi Saruwatari,
    "Spatial active noise control based on kernel interpolation with directional weighting,"
    in Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Barcelona, May 2020, pp. 8399-8403.
    (Invited)
    [link]
  • Masahiro Nakanishi, Natsuki Ueno, Shoichi Koyama, and Hiroshi Saruwatari,
    "Two-dimensional sound field recording with multiple circular microphone arrays considering multiple scattering,"
    in Proceedings of IEEE Workshop on applications of signal processing to audio and acoustics (WASPAA), New Paltz, October 2019, pp. 363-367.
    [link]
  • Hayato Ito, Shoichi Koyama, Natsuki Ueno, and Hiroshi Saruwatari,
    "Three-dimensional spatial active noise control based on kernel-induced sound field interpolation,"
    in Proceedings of International Congress on acoustics (ICA), Aachen, September 2019, pp. 1101-1108.
    [link]
  • Yuhta Takida, Shoichi Koyama, Natsuki Ueno, and Hiroshi Saruwatari,
    "Comparison of interpolation methods for gridless sound field decomposition based on reciprocity gap functional,"
    in Proceedings of International Congress on Sound and Vibration (ICSV), Montreal, July 2019.
    (Invited)
  • Hayato Ito, Shoichi Koyama, Natsuki Ueno, and Hiroshi Saruwatari,
    "Feedforward spatial active noise control based on kernel interpolation of sound field,"
    in Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Brighton, May 2019, pp. 511-515.
    (Best Student Paper Award)
    [link]
  • Yuhta Takida, Shoichi Koyama, Natsuki Ueno, and Hiroshi Saruwatari,
    "Robust gridless sound field decomposotion based on structured reciprocity gap functional in spherical harmonic domain,"
    in Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Brighton, May 2019, pp. 581-585.
    [link]
  • Natsuki Ueno, Shoichi Koyama, and Hiroshi Saruwatari,
    "Kernel ridge regression with constraint of Helmholtz equation for sound field interpolation,"
    in Proceedings of International Workshop on Acoustic Signal Enhancement (IWAENC), pp. 436-440, Tokyo, September 2018.
    [link]
  • Yuhta Takida, Shoichi Koyama, Natsuki Ueno, and Hiroshi Saruwatari,
    "Gridless sound field decomposition based on reciprocity gap functional in spherical harmonic domain,"
    in Proceedings of IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), pp. 627-631, Sheffield, July 2018.
    (Best Student Paper Award) (ONRG sponsored student travel grants)
    [link]
  • Natsuki Ueno, Shoichi Koyama, and Hiroshi Saruwatari,
    "Sound field reproduction with exterior cancellation using analytical weighting of harmonic coefficients,"
    in Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp. 466-470, Calgary, April 2018.
    (IEEE SPS Japan Student Conference Paper Award)
    [link]
  • Natsuki Ueno, Shoichi Koyama, and Hiroshi Saruwatari,
    "Listening-area-informed sound field reproduction based on circular harmonic expansion,"
    in Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp. 111-115, New Orleans, March 2017.
    [link]
  • Natsuki Ueno, Shoichi Koyama, and Hiroshi Saruwatari,
    "Listening-area-informed sound field reproduction with Gaussian prior based on circular harmonic expansion,"
    in Proceedings of Joint Workshop on Hands-free Speech Communications and Microphone Arrays (HSCMA), pp. 196-200, San Francisco, March 2017.
    [link]

Domestic Conferences


  • 西田 智哉, 植野 夏樹, 小山 翔一, 猿渡 洋,
    "ガウス過程に基づく音場計測のためのセンサ配置最適化,"
    日本音響学会 2020年秋季研究発表会講演論文集, 2-1-16, pp. 211–214, September 2020 (in Japanese).
  • 西田 智哉, 植野 夏樹, 小山 翔一, 猿渡 洋,
    "ガウス過程に基づく場の計測のための推定・候補領域を独立に設定可能なセンサ配置法,"
    電子情報通信学会技術報告, vol. 119, no. 440, pp. 141-146, Okinawa, March 2020 (in Japanese).
  • 植野 夏樹, 小山 翔一, 猿渡 洋,
    "微分可能な凸損失関数を用いたオーバーサンプリングされたクリップ信号の復元,"
    電子情報通信学会技術報告, vol. 119, no. 440, pp. 147-152, Okinawa, March 2020 (in Japanese).
  • Juliano G. C. Ribeiro, Natsuki Ueno, Shoichi Koyama, and Hiroshi Saruwatari,
    "Region-to-region acoustic transfer function estimation with distributed sources and receivers based on kernel interpolation,"
    電子情報通信学会技術報告, vol. 119, no. 375, pp. 83-88, Kyoto, January 2020.
  • 伊東 勇登, 小山 翔一, 植野 夏樹, 猿渡 洋,
    "音場のカーネル補間に基づくフィードバック型三次元空間能動騒音制御,"
    日本音響学会 2019年秋季研究発表会講演論文集, 1-1-11, pp. 183–186, Shiga, September 2019 (in Japanese).
    (Student Presentation Award)
  • 伊東 勇登, 小山 翔一, 植野 夏樹, 猿渡 洋,
    "音場の補間に基づく分散配置マイクロフォンを用いたフィードフォワード型空間能動騒音制御,"
    日本音響学会 2019年春季研究発表会講演論文集, 3-6-12, pp. 279–282, Tokyo, March 2019 (in Japanese).
  • 瀧田 雄太, 小山 翔一, 植野 夏樹, 猿渡 洋,
    "Annihilatingフィルタを用いた球面調和関数領域reciprocity gap functional: 複数周波数を用いたグリッドレス音場分解,"
    第33回 信号処理シンポジウム, pp. 184–189, Tokyo, November 2018 (in Japanese).
  • 植野 夏樹, 小山 翔一, 猿渡 洋,
    "微分で求める!積分を用いない高次アンビソニックス係数の導出,"
    日本音響学会 2018年秋季研究発表会講演論文集, 1-P-25, pp. 307–310, Oita, September 2018 (in Japanese).
  • 瀧田 雄太, 小山 翔一, 植野 夏樹, 猿渡 洋,
    "球面調和領域におけるreciprocity gap functional に基づくグリッドレス音場分解に関する実験的評価,"
    日本音響学会 2018年秋季研究発表会講演論文集, 1-P-38, pp. 341–344, Oita, September 2018 (in Japanese).
  • 植野 夏樹, 小山 翔一, 猿渡 洋,
    "調和スペクトルの解析的重み付けに基づく音場再現と放射抑圧,"
    日本音響学会 2018年春季研究発表会講演論文集, 3-4-6, pp. 485–488, Saitama, March 2018 (in Japanese).
  • 瀧田 雄太, 小山 翔一, 植野 夏樹, 猿渡 洋,
    "凸最適化による信号分離を用いたグリッドレス音場分解の性能向上,"
    電子情報通信学会技術報告, vol. 117, no. 399, pp. 19-24, Osaka, January 2018 (in Japanese).
  • 植野 夏樹, 小山 翔一, 猿渡 洋,
    "無限次元調和解析に基づく音場補間とそのカーネル回帰としての解釈,"
    日本音響学会 2017年秋季研究発表会講演論文集, 1-12-5, pp. 453–456, Ehime, September 2017 (in Japanese).
  • 瀧田 雄太, 小山 翔一, 植野 夏樹, 猿渡 洋,
    "複数球状マイクロフォンアレイを用いたグリッドレス音場分解の検討,"
    日本音響学会 2017年秋季研究発表会講演論文集, 1-12-3, pp. 447–450, Ehime, September 2017 (in Japanese).
    (Student Presentation Award)
  • 植野 夏樹, 亀岡 弘和,
    "空間勾配スペクトルのベイズモデリングによる複数音源の瞬時定位,"
    日本音響学会 2017年春季研究発表会講演論文集, 3-1-9, pp. 479–482, Kanagawa, March 2017 (in Japanese).
  • 植野 夏樹, 小山 翔一, 猿渡 洋,
    "受聴エリア事前情報を用いた音場再現 ~任意のスピーカ配置と指向特性における検証~,"
    電子情報通信学会技術報告, vol. 116, no. 420, pp. 7-12, Kyoto, January 2017 (in Japanese).
    (Student Presentation Award)
  • 植野 夏樹, 小山 翔一, 猿渡 洋,
    "受聴エリア事前情報を用いた音場再現 ―直線状アレイによる検証―,"
    日本音響学会 2016年秋季研究発表会講演論文集, 3-7-17, pp. 415–418, Toyama, September 2016 (in Japanese).
    (Student Presentation Award)
  • 植野 夏樹, 延原 章平, 松山 隆司,
    "平行柱面屈折層を備えたRay-Pixelカメラのキャリブレーション,"
    情報処理学会研究報告 (CVIM), 2016-CVIM-202, no. 11, pp. 1–8, Osaka, May 2016 (in Japanese).
    (Bachelor Thesis Session Award)