Efficient multichannel nonnegative matrix factorization with rank-1 spatial m...Daichi Kitamura
Presented at 2014 Autumn Meeting of Acoustical Society of Japan (domestic conference)
Daichi Kitamura, Nobutaka Ono, Hiroshi Sawada, Hirokazu Kameoka, Hiroshi Saruwatari, "Efficient multichannel nonnegative matrix factorization with rank-1 spatial model," Proceedings of 2014 Autumn Meeting of Acoustical Society of Japan, 2-1-11, pp.579-582, Hokkaido, September 2014 (in Japanese, 粟屋 潔学術奨励賞受賞)
非負値行列分解の確率的生成モデルと多チャネル音源分離への応用 (Generative model in nonnegative matrix facto...Daichi Kitamura
北村大地, "非負値行列分解の確率的生成モデルと多チャネル音源分離への応用," 慶應義塾大学理工学部電子工学科湯川研究室 招待講演, Kanagawa, November, 2015.
Daichi Kitamura, "Generative model in nonnegative matrix factorization and its application to multichannel sound source separation," Keio University, Science and Technology, Department of Electronics and Electrical Engineeing, Yukawa Laboratory, Invited Talk, Kanagawa, November, 2015.
Divergence optimization based on trade-off between separation and extrapolati...Daichi Kitamura
Presented at 2013 Autumn Meeting of Acoustical Society of Japan (domestic conference)
Daichi Kitamura, Hiroshi Saruwatari, Satoshi Nakamura, Kazunobu Kondo, Yu Takahashi, "Divergence optimization based on trade-off between separation and extrapolation abilities in superresolution-based nonnegative matrix factorization," Proceedings of 2013 Autumn Meeting of Acoustical Society of Japan, 1-1-6, pp.583-586, Aichi, September 2013 (学生優秀発表賞受賞).
Optimal divergence diversity for superresolution-based nonnegative matrix fac...Daichi Kitamura
Presented at 2014 Spring Meeting of Acoustical Society of Japan (domestic comference)
Daichi Kitamura, Hiroshi Saruwatari, Satoshi Nakamura, Kazunobu Kondo, Yu Takahashi, Hirokazu Kameoka, "Optimal divergence diversity for superresolution-based nonnegative matrix factorization," Proceedings of 2014 Spring Meeting of Acoustical Society of Japan, 3-2-9, pp.727-730, Tokyo, March 2014.
Efficient multichannel nonnegative matrix factorization with rank-1 spatial m...Daichi Kitamura
Presented at 2014 Autumn Meeting of Acoustical Society of Japan (domestic conference)
Daichi Kitamura, Nobutaka Ono, Hiroshi Sawada, Hirokazu Kameoka, Hiroshi Saruwatari, "Efficient multichannel nonnegative matrix factorization with rank-1 spatial model," Proceedings of 2014 Autumn Meeting of Acoustical Society of Japan, 2-1-11, pp.579-582, Hokkaido, September 2014 (in Japanese, 粟屋 潔学術奨励賞受賞)
非負値行列分解の確率的生成モデルと多チャネル音源分離への応用 (Generative model in nonnegative matrix facto...Daichi Kitamura
北村大地, "非負値行列分解の確率的生成モデルと多チャネル音源分離への応用," 慶應義塾大学理工学部電子工学科湯川研究室 招待講演, Kanagawa, November, 2015.
Daichi Kitamura, "Generative model in nonnegative matrix factorization and its application to multichannel sound source separation," Keio University, Science and Technology, Department of Electronics and Electrical Engineeing, Yukawa Laboratory, Invited Talk, Kanagawa, November, 2015.
Divergence optimization based on trade-off between separation and extrapolati...Daichi Kitamura
Presented at 2013 Autumn Meeting of Acoustical Society of Japan (domestic conference)
Daichi Kitamura, Hiroshi Saruwatari, Satoshi Nakamura, Kazunobu Kondo, Yu Takahashi, "Divergence optimization based on trade-off between separation and extrapolation abilities in superresolution-based nonnegative matrix factorization," Proceedings of 2013 Autumn Meeting of Acoustical Society of Japan, 1-1-6, pp.583-586, Aichi, September 2013 (学生優秀発表賞受賞).
Optimal divergence diversity for superresolution-based nonnegative matrix fac...Daichi Kitamura
Presented at 2014 Spring Meeting of Acoustical Society of Japan (domestic comference)
Daichi Kitamura, Hiroshi Saruwatari, Satoshi Nakamura, Kazunobu Kondo, Yu Takahashi, Hirokazu Kameoka, "Optimal divergence diversity for superresolution-based nonnegative matrix factorization," Proceedings of 2014 Spring Meeting of Acoustical Society of Japan, 3-2-9, pp.727-730, Tokyo, March 2014.
過決定条件BSSにおけるランク1空間制約の緩和 Relaxation of rank-1 spatial model in overdetermined...Daichi Kitamura
Presented at 2015 Spring Meeting of Acoustical Society of Japan (domestic conference)
北村大地, 小野順貴, 澤田宏, 亀岡弘和, 猿渡洋, "過決定条件BSS におけるランク1 空間制約の緩和," 日本音響学会 2015年春季研究発表会, 3-10-11, pp.629-632, Tokyo, March 2015.
Daichi Kitamura, Nobutaka Ono, Hiroshi Sawada, Hirokazu Kameoka, Hiroshi Saruwatari, "Relaxation of rank-1 spatial model in overdetermined BSS," Proceedings of 2015 Spring Meeting of Acoustical Society of Japan, 3-10-11, Tokyo, March 2015 (in Japanese).
Evaluation of separation accuracy for various real instruments based on super...Daichi Kitamura
Presented at 2013 Spring Meeting of Acoustical Society of Japan (domestic conference)
Daichi Kitamura, Hiroshi Saruwatari, Kiyohiro Shikano, Kazunobu Kondo, Yu Takahashi, "Evaluation of separation accuracy for various real instruments based on supervised NMF with basis deformation," Proceedings of 2013 Spring Meeting of Acoustical Society of Japan, 3-1-11, pp.1057-1060, Tokyo, March 2013.
統計的独立性と低ランク行列分解理論に基づくブラインド音源分離 –独立低ランク行列分析– Blind source separation based on...Daichi Kitamura
北村大地, "統計的独立性と低ランク行列分解理論に基づくブラインド音源分離 –独立低ランク行列分析–," 筑波大学システム情報工学研究科マルチメディア研究室 招待講演, Ibaraki, September 26th, 2016.
Daichi Kitamura, "Blind source separation based on statistical independence and low-rank matrix decomposition –Independent low-rank matrix analysis–," University of Tsukuba, Graduate School of Systems and Information Engineering, Multimedia Laboratory, Invited Talk, Ibaraki, September 26th, 2016.
ランク1空間近似を用いたBSSにおける音源及び空間モデルの考察 Study on Source and Spatial Models for BSS wi...Daichi Kitamura
Presented at 2015 Autumn Meeting of Acoustical Society of Japan (domestic conference)
北村大地, 猿渡洋, 小野順貴, 澤田宏, 亀岡弘和, "ランク1空間近似を用いたBSSにおける音源及び空間モデルの考察," 日本音響学会 2015年秋季研究発表会, 3-6-10, pp.583-586, Fukushima, September 2015.
Daichi Kitamura, Hiroshi Saruwatari, Nobutaka Ono, Hiroshi Sawada, Hirokazu Kameoka, "Study on source and spatial models for BSS with rank-1 spatial approximation," Proceedings of 2015 Autumn Meeting of Acoustical Society of Japan, 3-6-10, pp.583-586, Fukushima, September 2015 (in Japanese).
北村大地, 小野順貴, "独立性基準を用いた非負値行列因子分解の効果的な初期値決定法," 日本音響学会 2016年春季研究発表会, 3-3-5, pp. 619-622, Kanagawa, March 2016.
Daichi Kitamura, Nobutaka Ono, "Statistical-independence-based effective initialization for nonnegative matrix factorization," Proceedings of 2016 Spring Meeting of Acoustical Society of Japan, 3-3-5, pp. 619-622, Kanagawa, March 2016 (in Japanese).
過決定条件BSSにおけるランク1空間制約の緩和 Relaxation of rank-1 spatial model in overdetermined...Daichi Kitamura
Presented at 2015 Spring Meeting of Acoustical Society of Japan (domestic conference)
北村大地, 小野順貴, 澤田宏, 亀岡弘和, 猿渡洋, "過決定条件BSS におけるランク1 空間制約の緩和," 日本音響学会 2015年春季研究発表会, 3-10-11, pp.629-632, Tokyo, March 2015.
Daichi Kitamura, Nobutaka Ono, Hiroshi Sawada, Hirokazu Kameoka, Hiroshi Saruwatari, "Relaxation of rank-1 spatial model in overdetermined BSS," Proceedings of 2015 Spring Meeting of Acoustical Society of Japan, 3-10-11, Tokyo, March 2015 (in Japanese).
Evaluation of separation accuracy for various real instruments based on super...Daichi Kitamura
Presented at 2013 Spring Meeting of Acoustical Society of Japan (domestic conference)
Daichi Kitamura, Hiroshi Saruwatari, Kiyohiro Shikano, Kazunobu Kondo, Yu Takahashi, "Evaluation of separation accuracy for various real instruments based on supervised NMF with basis deformation," Proceedings of 2013 Spring Meeting of Acoustical Society of Japan, 3-1-11, pp.1057-1060, Tokyo, March 2013.
統計的独立性と低ランク行列分解理論に基づくブラインド音源分離 –独立低ランク行列分析– Blind source separation based on...Daichi Kitamura
北村大地, "統計的独立性と低ランク行列分解理論に基づくブラインド音源分離 –独立低ランク行列分析–," 筑波大学システム情報工学研究科マルチメディア研究室 招待講演, Ibaraki, September 26th, 2016.
Daichi Kitamura, "Blind source separation based on statistical independence and low-rank matrix decomposition –Independent low-rank matrix analysis–," University of Tsukuba, Graduate School of Systems and Information Engineering, Multimedia Laboratory, Invited Talk, Ibaraki, September 26th, 2016.
ランク1空間近似を用いたBSSにおける音源及び空間モデルの考察 Study on Source and Spatial Models for BSS wi...Daichi Kitamura
Presented at 2015 Autumn Meeting of Acoustical Society of Japan (domestic conference)
北村大地, 猿渡洋, 小野順貴, 澤田宏, 亀岡弘和, "ランク1空間近似を用いたBSSにおける音源及び空間モデルの考察," 日本音響学会 2015年秋季研究発表会, 3-6-10, pp.583-586, Fukushima, September 2015.
Daichi Kitamura, Hiroshi Saruwatari, Nobutaka Ono, Hiroshi Sawada, Hirokazu Kameoka, "Study on source and spatial models for BSS with rank-1 spatial approximation," Proceedings of 2015 Autumn Meeting of Acoustical Society of Japan, 3-6-10, pp.583-586, Fukushima, September 2015 (in Japanese).
北村大地, 小野順貴, "独立性基準を用いた非負値行列因子分解の効果的な初期値決定法," 日本音響学会 2016年春季研究発表会, 3-3-5, pp. 619-622, Kanagawa, March 2016.
Daichi Kitamura, Nobutaka Ono, "Statistical-independence-based effective initialization for nonnegative matrix factorization," Proceedings of 2016 Spring Meeting of Acoustical Society of Japan, 3-3-5, pp. 619-622, Kanagawa, March 2016 (in Japanese).
Generating Automatic Feedback on UI Mockups with Large Language Models
Divergence optimization based on trade-off between separation and extrapolation abilities in superresolution-based nonnegative matrix factorization
1. Divergence optimization based on trade-off between
separation and extrapolation abilities in
superresolution-based nonnegative matrix factorization
超解像型非負値行列因子分解における分離性能と外挿能力の
トレードオフに基づく最適なダイバージェンスの検討
☆北村大地, 猿渡洋, 中村哲
(奈良先端科学技術大学院大学)
高橋祐, 近藤多伸
(ヤマハ株式会社)
2. 背景: 非負値行列因子分解による音源分離
• 音源分離: 複数の音源から成る混合音から特定の音源を分離
• 非負値行列因子分解(nonnegative matrix factorization: NMF)[Lee, 2001]
Amplitude
Frequency
Frequency
– スパース分解表現による特徴量抽出手法
Time
観測スペクトログラム
Time
Amplitude
アクティベーション行列
基底スペクトル行列
Ω: 周波数ビン数
𝑇: 時間フレーム数
𝐾: 基底数
• 一般に各音源毎に基底を選別することは困難
• 目的音源の基底を学習する教師ありNMF [Smaragdis, 2010], [Yagi, 2012]
2