Peer-Reviewed International Conference Proceedings

  1. Kouei Yamaoka, Robin Scheibler, Nobutaka Ono, and Yukoh Wakabayashi, "Sub-Sample Time Delay Estimation via Auxiliary-Function-Based Iterative Updates," Proc. WASPAA, pp. 125-129, Oct. 2019. [PDF]
  2. Kouei Yamaoka, Li Li, Nobutaka Ono, Shoji Makino, and Takeshi Yamada, "CNN-based virtual microphone signal estimation for MPDR beamforming in underdetermined situations," Proc. EUSIPCO, Sept. 2019. [PDF]
  3. Kouei Yamaoka, Nobutaka Ono, Shoji Makino, and Takeshi Yamada, "Time-frequency-bin-wise switching of minimum variance distortionless response beamformer for underdetermined situations," Proc. ICASSP, pp. 7908-7912, May 2019. [PDF] (IEEE SPS Japan Student Conference Paper Award)
  4. Kouei Yamaoka, Nobutaka Ono, Shoji Makino, and Takeshi Yamada, "Performance Evaluation of Time-Frequency-Bin-Wise Switching Beamformer in Reverberant Environments," Proc. NCSP, pp. 264-267, Mar. 2019. [PDF]
  5. Kouei Yamaoka, Andreas Brendel, Nobutaka Ono, Shoji Makino, Michael Buerger, Takeshi Yamada and Walter Kellermann, "Time-Frequency-Bin-Wise Beamformer Selection and Masking for Speech Enhancement in Underdetermined Noisy Scenarios," Proc. EUSIPCO, pp. 1596-1600, Sep. 2018. [PDF]
  6. Kouei Yamaoka, Nobutaka Ono, Shoji Makino and Takeshi Yamada, "Abnormal sound detection by two microphones using virtual microphone technique," Proc. APSIPA, Dec. 2017. [PDF]
  7. Kouei Yamaoka, Shoji Makino, Nobutaka Ono and Takeshi Yamada, "Performance Evaluation of Nonlinear Speech Enhancement Based on Virtual Increase of Channels in Reverberant Environments," Proc. EUSIPCO, pp. 2324-2328, Aug. 2017. [PDF]

Non-Reviewed Domestic Conference Proceedings

  1. Kouei Yamaoka, Robin Scheibler, Nobutaka Ono, and Yukoh Wakabayashi, "Sub-Sample Time Delay Estimation for Two Signals with Auxiliary-Function-Based Optimization," Proc. Signal Processing Symposium, pp. 62-67, Nov. 2019.
  2. Kouei Yamaoka, Nobutaka Ono, Shoji Makino and Takeshi Yamada, "MVDR beamformer based on time-frequency-bin-wise switching technique for underdetermined speech enhancement," IEICE Technical Report, vol. 118, no. 497, SP2018-86, pp. 149-154, Mar., 2019 (in Japanese, IEICE Speech Committee Student Poster Award).
  3. Kouei Yamaoka, Nobutaka Ono, Shoji Makino and Takeshi Yamada, "Underdetermined speech enhancement with time-frequency-bin-wise switching beamformer and time-frequency masking," Proc. 2018 Autumn Meeting of ASJ, pp.407-410, Sept., 2018 (in Japanese).
  4. Kouei Yamaoka, Nobutaka Ono, Shoji Makino and Takeshi Yamada, "Nonlinear microphone array with combination of multiple beamformers," Proc. 2018 Spring Meeting of ASJ, pp. 475-478, Mar., 2018 (in Japanese, ASJ Student Presentation Award).
  5. Kouei Yamaoka, Nobutaka Ono, Takeshi Yamada and Shoji Makino, "Performance of maximum SNR beamformer based on virtual increase of channels in reverberant environments," Proc. 2016 Autumn Meeting of ASJ, pp. 379-382, Sept., 2016 (in Japanese).

Journal Paper

  1. Yoshiaki Bando, Hiroshi Saruwatari, Nobutaka Ono, Shoji Makino, Katustoshi Itoyama, Daichi Kitamura, Masaru Ishimura, Moe Takakusaki, Narumi Mae, Kouei Yamaoka, Yutaro Matsui, Yuichi Ambe, Masashi Konyo, Satoshi Tadokoro, Kazuyoshi Yoshii, and Hiroshi G. Okuno, "Low-Latency and High-Quality Two-Stage Human-Voice-Enhancement System for a Hose-Shaped Rescue Robot," Journal of Robotics and Mechatronics, vol. 29, no. 1, pp. 198-212, Feb. 2017.

Peer-Reviewed International Conference Proceedings

  1. Ryoga Jinzai, Kouei Yamaoka, Mitsuo Matsumoto, Shoji Makino and Takeshi Yamada, "Wavelength Proportional Arrangement of Virtual Microphones Based on Interpolation/Extrapolation for Underdetermined Speech Enhancement," Proc. EUSIPCO, pp. ?-?, Sept. 2019.
  2. Ryoga Jinzai, Kouei Yamaoka, Mitsuo Matsumoto, Takeshi Yamada and Shoji Makino, "Microphone Position Realignment by Extrapolation of Virtual Microphone," Proc. APSIPA, pp. 367-372, Nov. 2018.
  3. Narumi Mae, Kouei Yamaoka, Yoshiki Mitui, Mitsuo Matsumoto, Shoji Makino, Daichi Kitamura, Nobutaka Ono, Takeshi Yamada and Hiroshi Saruwatari, "Ego Noise Reduction and Sound Localization Adapted to Human Ears Using Hose-shaped Rescue Robot," Proc. NCSP, Mar. 2018.

Non-Reviewed Domestic Conference Proceedings

  1. Riki Takahashi, Kouei Yamaoka, Nobutaka Ono, Shoji Makino and Takeshi Yamada, "Underdetermined speech enhancement with time-frequency-bin-wise switching beamformer and gated convolutional network-based time-frequency mask," Proc. 2019 Spring Meeting of ASJ, pp. 181-184, Mar. 2019 (in Japanese).
  2. Ryoga Jinzai, Kouei Yamaoka, Mitsuo Matsumoto, Takeshi Yamada, and Shoji Makino, "Microphone position realignment by extrapolation of virtual microphone," Proc. 2018 Autumn Meeting of ASJ, pp. 149-152, Sept. 2018 (in Japanese).
  3. Yoshiki Mitsui, Satoshi Mizoguchi, Hiroshi Saruwatari, Daichi Kitamura, Nobutaka Ono, Masaru Ishimura, Narumi Mae, Moe Takakusaki, Yutaro Matsui, Kouei Yamaoka, and Shoji Makino, "Development of high quality blind source separation based on independent low-rank matrix analysis and statistical speech enhancement for flexible hose-shaped robot," Proc. The 2016 JSME ROBOMECH, no. 17-2, 1P2-P04, May 2017 (in Japanese).
  4. Yoshiki Mitsui, Satoshi Mizoguchi, Hiroshi Saruwatari, Daichi Kitamura, Nobutaka Ono, Masaru Ishimura, Narumi Mae, Moe Takakusaki, Yutaro Matsui, Kouei Yamaoka, and Shoji Makino, "Development of blind source separation system for flexible hose-shaped robot using independent low-rank matrix analysis and statistical speech enhancement," Proc. 2017 Spring Meeting of ASJ, pp. 517-518, Mar. 2017 (in Japanese).