経歴

2009.04	日本電信電話株式会社に入社。NTTコミュニケーション科学基礎研究所 メディア情報研究部 メディア認識研究グループに配属．
2009.03	東京大学大学院 情報理工学系研究科システム情報学専攻 博士課程終了。指導教員：嵯峨山茂樹教授
2009.03	パリ第6大学大学院 電気通信情報理工学研究科 (EDITE) 博士課程終了。指導教員：Dr. Alain de Cheveigné
2006.08-2006.11	中国北京Microsoft Research Asia研究所音声グループにて学外実習(3ヵ月)。指導教員：Dr. Frank Soong
2005.04-2009.03	国費留学生(文部科学省奨学生)
2004.11-2005.03	NTTコミュニケーション科学基礎研究所(京阪奈地区)にて学外実習(4ヵ月)。指導教員：Dr. Erik McDermott
2003.08-2004.08	東京大学大学院数理科学研究科 交換留学生。指導教員：俣野博教授
2003.07	パリ第6大学大学院数学研究科確率過程専攻修士課程終了。指導教員：Prof. C. Villani
2001.08-2002.08	中国科学院自動化研究所中仏研究室(LIAMA)に てインターンシップ (中国、北京)。指導教員：Dr. Philippe de Reffye
	中国語能力試験（漢語水平考試、HSK）8級（中級 A、最高11級）
2001.07	パリ第11大学大学院数学研究科偏微分方程式専攻修士課程終了 (1位)。指導教員：Prof. P. Gérard
1999 夏	École Polytechniqueに首席合格
	パリのÉcole Normale Supérieure (エコール・ノルマル - ENS)に合格 (13位)
	パリのENSの数理科学研究科に進学
1997.09-1999.06	フランスの"Grandes Écoles"への予備校クラス(数学、物理学専攻)、Lycée Henri IV、パリ
1997.06	高校卒業, Summa Cum Laude

研究分野

• 音響信号処理 (Audio Processing)
  • 雑音中の単一話者や複数話者のピッチ推定
  • 音源分離、音声強調
  • ミッシングデータ復元
  • スペクトログラムの無矛盾性を考慮した信号処理
  • 振幅スペクトログラムからの高速時系列復元
• 機械学習、統計的推論 (Machine Learning, Statistical Inference)
  • ベイズ推定
  • 潜在変数モデル
  • スパース表現
  • Bregmanダイバージェンス、指数分布族
• 人間と機械の聴覚 (Machine Listening, Audition)
  • 音環境モデリング
  • 音脈分凝、聴覚補間のモデリング
  • 音声の変調解析
  • 聴覚の知見を動機にした信号の表現

研究業績

• 学位論文

  Jonathan Le Roux, "Exploiting Regularities in Natural Acoustical Scenes for Monaural Audio Signal Estimation, Decomposition, Restoration and Modification," Ph.D. dissertation, The University of Tokyo & Université Paris 6, Mar. 2009. [Download Page] [.bib]

• 学術論文

  Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono, Alain de Cheveigné and Shigeki Sagayama, "Computational Auditory Induction as a Missing-Data Model-Fitting Problem with Bregman Divergence," Accepted for publication in Speech Communication (Special issue on Perceptual and Statistical Audition), in Press. Corrected proof available online on ScienceDirect (DOI Link). Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono, Alain de Cheveigné and Shigeki Sagayama, "Single and Multiple F0 Contour Estimation through Parametric Spectrogram Modeling of Speech in Noisy Environments," In IEEE Transactions on Audio, Speech and Language Processing, Vol. 15, No. 4, pp. 1135–1145, May 2007. (Obligatory IEEE Copyright Notice) [.pdf] [.bib] Erik McDermott, Timothy J. Hazen, Jonathan Le Roux, Atsushi Nakamura and Shigeru Katagiri, "Discriminative Training for Large Vocabulary Speech Recognition using Minimum Classification Error," In IEEE Transactions on Audio, Speech and Language Processing, Vol. 15, No. 1, pp. 203–223, Jan. 2007. (Obligatory IEEE Copyright Notice) [.pdf] [.bib]

• 国際会議論文(査読あり)

  Masahiro Nakano, Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono and Shigeki Sagayama, "Infinite-State Spectrum Model for Music Signal Analysis," accepted for publication in Proc. ICASSP 2011 International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2011), May 2011. Jonathan Le Roux, Emmanuel Vincent, Yuu Mizuno, Hirokazu Kameoka, Nobutaka Ono and Shigeki Sagayama, "Consistent Wiener Filtering: Generalized Time-Frequency Masking Respecting Spectrogram Consistency," in Proc. 9th International Conference on Latent Variable Analysis and Signal Separation (LVA/ICA 2010), Lecture Notes in Computer Science, Vol. 6365/2010, pp. 89–96, Springer, Sep. 2010. [.pdf], [.bib] Hirokazu Kameoka, Takuya Yoshioka, Mariko Hamamura, Jonathan Le Roux and Kunio Kashino, "Statistical Model of Speech Signals Based on Composite Autoregressive System with Application to Blind Source Separation," in Proc. 9th International Conference on Latent Variable Analysis and Signal Separation (LVA/ICA 2010), pp. 245–253, Sep. 2010. [.pdf], [.bib] Masahiro Nakano, Jonathan Le Roux, Hirokazu Kameoka, Yu Kitano, Nobutaka Ono and Shigeki Sagayama, "Nonnegative Matrix Factorization with Markov-chained Bases for Modeling Time-varying patterns in Music Spectrograms," in Proc. 9th International Conference on Latent Variable Analysis and Signal Separation (LVA/ICA 2010), pp. 149–156, Sep. 2010. [.pdf], [.bib] Hirokazu Kameoka, Jonathan Le Roux and Yasunori Ohishi, "A Statistical Model of Speech F0 Contours," in Proc. ISCA Tutorial and Research Workshop on Statistical And Perceptual Audition (SAPA 2010), pp. 43–48, Sep. 2010. [.pdf], [.bib] Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono and Shigeki Sagayama, "Fast Signal Reconstruction from Magnitude STFT Spectrogram Based on Spectrogram Consistency," in Proc. 13th International Conference on Digital Audio Effects (DAFx-10), pp. 397–403, Sep. 2010. [.pdf], [.bib] Masahiro Nakano, Hirokazu Kameoka, Jonathan Le Roux, Yu Kitano, Nobutaka Ono, Shigeki Sagayama, "Convergence-Guaranteed Multiplicative Algorithms for Non-Negative Matrix Factorization with Beta-Divergence," in Proc. 2010 IEEE International Workshop on Machine Learning for Signal Processing (MLSP 2010), pp. 283–288, Aug. 2010. [.pdf], [.bib] Jonathan Le Roux, Alain de Cheveigné and Lucas C. Parra, "Adaptive Template Matching with Shift-Invariant Semi-NMF," in Advances in Neural Information Processing Systems 21 (Proc. NIPS*2008), D. Koller, Y. Bengio, D. Schuurmans, and L. Bottou, Eds. Cambridge, MA: The MIT Press, 2009. (Presented in Dec. 2008) [.pdf], [.bib] Jonathan Le Roux, Nobutaka Ono and Shigeki Sagayama, "Explicit Consistency Constraints for STFT Spectrograms and Their Application to Phase Reconstruction," in Proc. SAPA 2008 Workshop on Statistical and Perceptual Audition (SAPA 2008), pp. 23–28, Sep. 2008. [.pdf], [.bib] Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono, Alain de Cheveigné and Shigeki Sagayama, "Computational Auditory Induction by Missing-Data Non-Negative Matrix Factorization," in Proc. SAPA 2008 Workshop on Statistical and Perceptual Audition (SAPA 2008), pp. 1–6, Sep. 2008. [.pdf], [.bib] Nobutaka Ono, Ken-ichi Miyamoto, Jonathan Le Roux, Hirokazu Kameoka and Shigeki Sagayama, "Separation of a Monaural Audio Signal into Harmonic/Percussive Components by Complementary Diffusion on Spectrogram," in Proc. EUSIPCO 2008 European Signal Processing Conference, Aug. 2008. [.pdf], [.bib] Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono, Shigeki Sagayama and Alain de Cheveigné, "Modulation Analysis of Speech Through Orthogonal FIR Filterbank Optimization," in Proc. ICASSP 2008 International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2008), pp. 4189–4192, Apr. 2008. [.pdf], [.bib] Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono, Alain de Cheveigné and Shigeki Sagayama, "Single Channel Speech and Background Segregation through Harmonic-Temporal Clustering," in Proc. WASPAA 2007 Workshop on Applications of Signal Processing to Audio and Acoustics, pp. 279–282, Oct. 2007. [.pdf] [.bib] Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono, Alain de Cheveigné and Shigeki Sagayama, "Harmonic-Temporal Clustering of Speech for Single and Multiple F0 Contour Estimation in Noisy Environments," In Proc. ICASSP 2007 International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2007), Vol. IV, pp. 1053–1056, Apr. 2007. [.pdf] [.bib] (電気通信普及財団からの渡航旅費援助で参加) Alain de Cheveigné, Jonathan Le Roux and Jonathan Z. Simon, "MEG Signal Denoising based on Time-Shift PCA," In Proc. ICASSP 2007 International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2007), Vol. I, pp. 317–320, Apr. 2007. [.pdf] [.bib] Hirokazu Kameoka, Jonathan Le Roux, Nobutaka Ono and Shigeki Sagayama, "Speech Analyzer Using a Joint Estimation Model of Spectral Envelope and Fine Structure," In Proc. Interspeech2006 International Conference on Spoken Language Processing (ICSLP2006), pp. 2502–2505, Sep. 2006. [.pdf] [.bib] Jonathan Le Roux and Erik McDermott, "Optimization Methods for Discriminative Training," in Proc. Eurospeech 2005, pp. 3341–3344, Sep. 2005. [.pdf] [.bib]

• 国際会議発表(アブストラクト)

  Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono, Alain de Cheveigné and Shigeki Sagayama, "Music and Speech Signal Processing using Harmonic-Temporal Clustering," Invited talk at Acoustics'08 Paris (Acoustics'08), July 2008. [.bib] Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono and Shigeki Sagayama, "Parametric Spectrogram Modeling of Single and Concurrent Speech with Spline Pitch Contour," in Proc. 4th Joint Meeting of the Acoustical Society of America and the Acoustical Society of Japan, Nov. 2006. [.bib]

• 国内大会論文・研究会論文

  ルルー・ジョナトン, "スペクトログラム矛盾性最大化と位相制御による音の転写," 日本音響学会2010年春季研究発表会講演論文集, 1-Q-51, 掲載予定, Mar. 2011. [.bib] ルルー・ジョナトン, 亀岡弘和, 小野順貴, 嵯峨山茂樹, "スペクトログラム無矛盾性に基づく位相付加アルゴリズムにおける位相初期値選択による高速化の検討," 日本音響学会2010年秋季研究発表会講演論文集, 3-10-3, Sep. 2010. [.bib] 亀岡弘和, ルルー・ジョナトン, 大石康智, "音声F0パターン生成過程の確率モデル," 日本音響学会2010年秋季研究発表会講演論文集, 1-1-3, Sep. 2010. [.bib] 濱村真理子, 亀岡弘和, 吉岡拓也, ルルー・ジョナトン, 柏野邦夫, "複合自己回帰系による音声パワースペクトル密度モデルを用いたブラインド音源分離と残響除去," 日本音響学会2010年秋季研究発表会講演論文集, 2-P-22, Sep. 2010. [.bib] ルルー・ジョナトン, ヴァンサン・エマヌエル, 水野優, 亀岡弘和, 小 野順貴, 嵯峨山茂樹, "Consistent Wiener filtering：スペクトログラム無矛盾性を保証する一般化時間周波数マスクの設計法," 日本音響学会2010年春季研究発表会講演論文集, 3-5-3, Mar. 2010. [.bib] ルルー・ジョナトン, 亀岡弘和, 小野順貴, 嵯峨山茂樹, "スペクトログラム無矛盾性に基づく位相推定アルゴリズムの統一的解釈及び高速化の検討," 日本音響学会2010年春季研究発表会講演論文集, 3-5-2, Mar. 2010. [.bib] 亀岡弘和, 大石康智, 持橋大地, ルルー・ジョナトン, "マルチカーネル線形予測モデルによる音声分析," 日本音響学会2010年春季研究発表会講演論文集, 2-Q-24, Mar. 2010. [.bib] 中野允裕, 北野佑, ルルー・ジョナトン, 亀岡弘和, 小野順貴, 嵯峨山茂樹, "可変基底NMFに基づく音楽音響信号の解析," 情報処理学会研究報告, 2010-MUS-84, Feb. 2010. [.bib] 亀岡弘和, ルルー ジョナトン, "Frobeniusノルム規準の非負値行列因子分解における乗法更新式に関する一考察," 日本音響学会2009年秋季研究発表会講演論文集, 1-P-8, 2009. [.bib] Jonathan Le Roux, Hirokazu Kameoka, Emmanuel Vincent, Nobutaka Ono, Kunio Kashino and Shigeki Sagayama, "Complex NMF under spectrogram consistency constraints," in Proc. of ASJ Autumn Meeting, 2-4-5, Sep. 2009. [.bib] 亀岡弘和, ルルー ジョナトン, 大石康智, 柏野邦夫, "Music Factorizer: 音楽音響信号をノート単位で編集できるインタフェース," 情報処理学会研究報告, 2009-MUS-81-9, Jul. 2009. [.bib] Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono and Shigeki Sagayama, "Spectrogram consistency and its application to phase reconstruction," in Proc. of IPSJ SIGMUS Summer Workshop, 2009-MUS-81-8, Jul. 2009. [.bib] 伊藤彰則, 安藤大地, ルルー ジョナトン, 中野 倫靖, 吉井 和佳, "新博士によるパネルディスカッションIII 「私のための研究・価値を生み出す研究」," (パネルディスカッション), 情報処理学会研究報告, 2009-MUS-81-7, Jul. 2009. [.bib] 水野 優, ルルー ジョナトン, 小野 順貴, 嵯峨山 茂樹, "パワースペクトログラムの伸縮と無矛盾位相付加に基づく音楽音響信号の実時間テンポ／ピッチ変換," 日本音響学会春季研究発表会講演集, pp. 843–844, Mar. 2009. [.bib] Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono, Shigeki Sagayama and Alain de Cheveigné, "Filterbank Optimization for Amplitude Modulation Analysis of Audio Signals," in Proc. of ASJ Autumn Meeting, 1-2-1, Sep. 2007. [.bib] Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono, Alain de Cheveigné and Shigeki Sagayama, "Monaural Speech Separation Through Harmonic-Temporal Clustering of the Power Spectrum," in Proc. of ASJ Autumn Meeting, 3-4-3, Sep. 2007. [.bib] 宮本賢一, 立薗真理, ルルー ジョナトン, 亀岡弘和, 小野順貴, 嵯峨山茂樹, "スペクトログラム2次元フィルタによる調波音・打楽器音の分離," 日本音響学会秋季研究発表会講演集, 1-1-7, pp. 825–826, Sep., 2007. [.bib] 亀岡弘和, ルルー ジョナトン, 小野順貴, 嵯峨山茂樹, "調波時間構造化クラスタリングによるCASAへのアプローチ," 日本音響学会聴覚研究会, Vol. 36, No. 7, H-2006-103, pp. 575–580, 2006. [.pdf] [.bib] Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono and Shigeki Sagayama, "Harmonic Temporal Clustering of Speech Spectrum," in Proc. ASJ Spring Meeting, 2-11-3, in CD-ROM, Mar. 2006. [.bib]

• 書籍

  Nobutaka Ono, Kenichi Miyamoto, Hirokazu Kameoka, Jonathan Le Roux, Yuuki Uchiyama, Emiru Tsunoo, Takuya Nishimoto and Shigeki Sagayama, "Harmonic and Percussive Sound Separation and Its Application to MIR-Related Tasks," in Advances in Music Information Retrieval, ser. Studies in Computational Intelligence, Z. W. Ras and A. Wieczorkowska, Eds. Springer, 2010, vol. 274, pp. 213–236. [.bib]

• 技術研究報告

  Jonathan Le Roux, Hirokazu Kameoka, Nobutaka Ono and Shigeki Sagayama, "On the Interpretation of I-Divergence-Based Distribution Fitting as a Maximum-Likelihood Estimation Problem," Technical Report of the University of Tokyo, METR 2008-11, Mar. 2008. [.pdf] [.bib]

• 数学関連 (前世)

  Eric A. Carlen, Maria C. Carvalho, Jonathan Le Roux, Michael Loss and Cédric Villani, "Entropy and Chaos in the Kac Model," in Kinetic and Related Models, Vol. 3, No. 1, pp. 85–122, Mar. 2010. [.pdf] Jonathan Le Roux, "On Kac's Model in Kinetic Theory," Master's Thesis, 2003. (in French) [.pdf] Jonathan Le Roux, "Introduction to Boltzmann Equation," Part of my Magistere's Thesis (Graduation of the ENS Maths Department), 2003. (in French) [.pdf] Jonathan Le Roux, "Spectral Properties of Elliptic Operators on Compact Manifolds," Master's Thesis, July 2001. (in French) [.pdf].

• 表彰等

  Ecole Normale Supérieure (ENS) 4年間フルフェローシップ、1999年9 月〜2004年8月（中国での1年間は休学） 日本国際協力協会（AIEJ）奨学金、2003年9月〜2004年8月 日本政府（文部科学省）奨学金、2005年4月〜2009年3月 平成20年度 東京大学大学院 情報理工学系研究科 研究科長賞 受賞 情報処理学会 平成22年度 山下記念研究賞 受賞

対外活動等

査読者

• 論文誌
  • IEEE Transactions on Audio, Speech, and Language Processing
  • IEEE Transactions on Signal Processing
  • IEEE Journal of Selected Topics in Signal Processing
  • Speech Communication (Elsevier)
  • Pattern Recognition (Elsevier)
  • 電子情報通信学会論文誌（和文論文誌・英文論文誌）
• 国際会議
  • IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
  • International Conference on Latent Variable Analysis and Signal Separation (LVA/ICA)
  • ISCA Workshop on Statistical And Perceptual Audition (SAPA)