Rintaro IKESHITA

Researcher at NTT Communication Science Laboratories

NTT Keihanna Building, 2‐4, Hikaridai, Seika-cho, "Keihanna Science City" Kyoto 619‐0237, Japan.

Email: ikeshita [at] ieee.org


C.V.
Education

March 2013: Bachelor of Engineering, University of Tokyo.

March 2015: Master of Information Science and Technology, University of Tokyo.

Career

Jun. 2014 – Mar. 2015: Research Assistant of JST ERATO Kawarabayashi Large Graph Project (Link) "The Network Graph Theories and Optimization" Group.

Apr. 2015 – Oct. 2018: Researcher at Hitachi, Ltd. Research & Development Group, Tokyo, Japan.

Nov. 2018 – Today: Researcher at NTT Communication Science Laboratories, Kyoto, Japan.

Society membership

A member of the Institute of Electrical and Electronics Engineers (IEEE).

A member of the Acoustical Society of Japan (ASJ) (No. 20273).


Research Interests
Blind Source Separation, Array Signal Processing, Combinatorial Rigidity

Publications
Journals (Refereed)
  1. Rintaro Ikeshita, Shin-ichi Tanigawa: "Count matroids of group-labeled graphs," Combinatorica, 38:5 (2018), pp. 1101–1127.

  2. Takeshi Homma, Yasunari Obuchi, Kazuaki Shima, Rintaro Ikeshita, Hiroaki Kokubo, and Takuya Matsumoto: "In-vehicle voice interface with improved utterance classification accuracy using off-the-shelf cloud speech recognizer," IEICE Transactions, 101-D:12 (2018), pp. 3123–3137.

Conferences (Refereed)
  1. Rintaro Ikeshita, Nobutaka Ito, Tomohiro Nakatani, and Hiroshi Sawada: "Independent low-rank matrix analysis with decorrelation learning," Proc. WASPAA, 2019.

  2. Tomohiro Nakatani, Keisuke Kinoshita, Rintaro Ikeshita, Hiroshi Sawada, and Shoko Araki: "Simultaneous denoising, dereverberation, and source separation using a unified convolutional beamformer," Proc. WASPAA, 2019.

  3. Rintaro Ikeshita, Nobutaka Ito, Tomohiro Nakatani, and Hiroshi Sawada: "A unifying framework for blind source separation based on a joint diagonalizability constraint," Proc. EUSIPCO, 2019.

  4. Hiroshi Sawada, Rintaro Ikeshita, Nobutaka Ito, and Tomohiro Nakatani: "Computational acceleration and smart initialization of full-rank spatial covariance analysis," Proc. EUSIPCO, 2019.

  5. Naoyuki Kanda, Yusuke Fujita, Shota Horiguchi, Rintaro Ikeshita, Kenji Nagamatsu, and Shinji Watanabe: "Acoustic modeling for distant multi-talker speech recognition with single- and multi-channel branches," Proc. ICASSP, pp. 6630–6634, 2019.

  6. Rintaro Ikeshita: "Independent positive semidefinite tensor analysis in blind source separation," Proc. EUSIPCO, pp. 1652–1656, 2018.

  7. Rintaro Ikeshita, Yohei Kawaguchi, and Kenji Nagamatsu: "Fast multichannel nonnegative matrix factorization with constraints on active source candidates," Proc. IWAENC, pp. 520–524, 2018.

  8. Rintaro Ikeshita, Yohei Kawaguchi: "Independent low-rank matrix analysis based on multivariate complex exponential power distribution," Proc. ICASSP, pp. 741–745, 2018.

  9. Rintaro Ikeshita, Masahito Togami, Yohei Kawaguchi, Yusuke Fujita, and Kenji Nagamatsu: "Local Gaussian model with source-set constraints in audio source separation," Proc. MLSP, pp. 1–6, 2017.

  10. Rintaro Ikeshita, Yohei Kawaguchi, Masahito Togami, Yusuke Fujita, and Kenji Nagamatsu: "Independent vector analysis with frequency range division and prior switching," Proc. EUSIPCO, pp. 2329–2333, 2017.

  11. Yohei Kawaguchi, Sandra Ramaswami, Ryoichi Takashima, Takashi Endo, and Rintaro Ikeshita: "Sub-Nyquist non-uniform sampling for low-cost sound monitoring," Proc. APSIPA, pp. 452–456, 2017.

Competitions
Theses
Domestic Conferences/Workshops (Non-refereed)
  1. 近藤樹, 高宗典玄, 北村大地, 猿渡洋, 池下林太郎, 中谷智広: 多変量複素 Student's t 分布に基づく独立半正定値テンソル分析によるブラインド音源分離. 日本音響学会 2019年秋期研究発表会, 2019.

  2. 福重敢太, 高宗典玄, 北村大地, 猿渡洋, 池下林太郎, 中谷智広: 収束保証型独立半正定値テンソル分析に基づくブラインド音源分離. 電気音響研究会, 2019.

  3. 池下林太郎: 独立半正定値テンソル分析. 日本音響学会 2018年春期研究発表会, 2018.

  4. 池下林太郎, 川口洋平: 多変量複素指数べき分布に基づく独立低ランク行列分析. 第32回信号処理シンポジウム, 2018.

  5. 池下林太郎, 川口洋平, 藤田雄介, 永松健司: 帯域分割と事前分布の切替を伴う独立ベクトル分析による音源分離. 日本音響学会 2017年春期研究発表会, 2017.

  6. 池下林太郎, 藤田雄介, 戸上真人: 時変ガウスモデルに基づく多チャネルウィナーフィルタと音源数制約型時間周波数マスクの統合. 日本音響学会 2016年秋期研究発表会, 2016.

  7. 池下林太郎, 谷川眞一: 巡回群の対称性をもつフレームワークの無限小剛性. 日本OR学会 2015年春季研究発表会, 2015.

  8. 池下林太郎: 対称性をもつフレームワークの剛性に関する研究. 日本OR学会「最適化の理論と応用-- 未来を担う若手研究者の集い2014 --」, 2014.