publications | Yuto Ishikawa

Journal Articles

2025

Real-Time Speech Extraction Based on Rank-Constrained Spatial Covariance Matrix Estimation and Spatially Regularized Independent Low-Rank Matrix Analysis with Fast Demixing Matrix Estimation

Yuto Ishikawa, Tomohiko Nakamura, Norihiro Takamune, Daichi Kitamura, and 3 more authors

IEEE Access, May 2025

DOI Bib

@article{Ishikawa2025Access,
  author = {Ishikawa, Yuto and Nakamura, Tomohiko and Takamune, Norihiro and Kitamura, Daichi and Saruwatari, Hiroshi and Takahashi, Yu and Kondo, Kazunobu},
  journal = {IEEE Access},
  title = {Real-Time Speech Extraction Based on Rank-Constrained Spatial Covariance Matrix Estimation and Spatially Regularized Independent Low-Rank Matrix Analysis with Fast Demixing Matrix Estimation},
  volume = {13},
  year = {2025},
  month = may,
  pages = {88683--88706},
  doi = {10.1109/ACCESS.2025.3569590},
  url = {https://ieeexplore.ieee.org/document/11003054}
}

International Conference Papers (Peer-Reviewed)

2025

Low-Latency Real-Time Speech Extraction Based on Rank-Constrained Spatial Covariance Matrix Estimation Using Asymmetric Window Function

Yuto Ishikawa, Tomohiko Nakamura, Norihiro Takamune, Daichi Kitamura, and 3 more authors

In Proceedings of ASA/ASJ Joint Meeting, Dec 2025

(accepted, abstract only)

Bib

@inproceedings{Ishikawa2025ASA_ASJ_JM,
  author = {Ishikawa, Yuto and Nakamura, Tomohiko and Takamune, Norihiro and Kitamura, Daichi and Saruwatari, Hiroshi and Takahashi, Yu and Kondo, Kazunobu},
  booktitle = {Proceedings of ASA/ASJ Joint Meeting},
  title = {Low-Latency Real-Time Speech Extraction Based on Rank-Constrained Spatial Covariance Matrix Estimation Using Asymmetric Window Function},
  year = {2025},
  month = dec,
  note = {(accepted, abstract only)}
}

Theoretical Formulation of Online Independent Vector Analysis Using Framewise Probabilistic Generative Model

Yuto Ishikawa, Norihiro Takamune, Kouei Yamaoka, and Hiroshi Saruwatari

In Proceedings of European Signal Processing Conference (EUSIPCO), Sep 2025

Bib

@inproceedings{Ishikawa2025EUSIPCO,
  author = {Ishikawa, Yuto and Takamune, Norihiro and Yamaoka, Kouei and Saruwatari, Hiroshi},
  booktitle = {Proceedings of European Signal Processing Conference (EUSIPCO)},
  title = {Theoretical Formulation of Online Independent Vector Analysis Using Framewise Probabilistic Generative Model},
  year = {2025},
  month = sep
}

Hearing-Aids System Using Distributed Assistive Device and Blind Speech Extraction Method Under Diffuse Noise

Yuto Ishikawa, Tomohiko Nakamura, Norihiro Takamune, and Hiroshi Saruwatari

In Proceedings of International Congress of Acoustics (ICA), May 2025

(abstract only)

Bib

@inproceedings{Ishikawa2025ICA,
  author = {Ishikawa, Yuto and Nakamura, Tomohiko and Takamune, Norihiro and Saruwatari, Hiroshi},
  booktitle = {Proceedings of International Congress of Acoustics (ICA)},
  title = {Hearing-Aids System Using Distributed Assistive Device and Blind Speech Extraction Method Under Diffuse Noise},
  year = {2025},
  month = may,
  note = {(abstract only)}
}

2024

Real-Time Noise Estimation for Lombard-Effect Speech Synthesis in Human–Avatar Dialogue Systems

Yuto Ishikawa, Osamu Take, Tomohiko Nakamura, Norihiro Takamune, and 3 more authors

In Proceedings of Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), Dec 2024

DOI Bib

@inproceedings{Ishikawa2024APSIPAASC,
  author = {Ishikawa, Yuto and Take, Osamu and Nakamura, Tomohiko and Takamune, Norihiro and Saito, Yuki and Takamichi, Shinnosuke and Saruwatari, Hiroshi},
  booktitle = {Proceedings of Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC)},
  title = {Real-Time Noise Estimation for Lombard-Effect Speech Synthesis in Human--Avatar Dialogue Systems},
  year = {2024},
  month = dec,
  pages = {1--6},
  doi = {10.1109/APSIPAASC63619.2025.10848599}
}

Real-Time Framework for Speech Extraction Method Based on Independent Low-Rank Matrix Analysis With Spatial Regularization and Rank-Constrained Spatial Covariance Matrix Estimation

Yuto Ishikawa, Tomohiko Nakamura, Norihiro Takamune, and Hiroshi Saruwatari

In Workshop on Spoken Dialogue Syetems for Cybernetic Avatars (SDS4CA), Sep 2024

(abstract only)

Bib

@inproceedings{Ishikawa2024SDS4CA,
  author = {Ishikawa, Yuto and Nakamura, Tomohiko and Takamune, Norihiro and Saruwatari, Hiroshi},
  booktitle = {Workshop on Spoken Dialogue Syetems for Cybernetic Avatars (SDS4CA)},
  title = {Real-Time Framework for Speech Extraction Method Based on Independent Low-Rank Matrix Analysis With Spatial Regularization and Rank-Constrained Spatial Covariance Matrix Estimation},
  year = {2024},
  month = sep,
  note = {(abstract only)}
}

Real-Time Speech Extraction Using Spatially Regularized Independent Low-Rank Matrix Analysis and Rank-Constrained Spatial Covariance Matrix Estimation

Yuto Ishikawa, Kohei Konaka, Tomohiko Nakamura, Norihiro Takamune, and 1 more author

In Proceedings of 2024 IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW), Apr 2024

(presented in HSCMA 2024)

DOI Bib

@inproceedings{Ishikawa2024HSCMA,
  author = {Ishikawa, Yuto and Konaka, Kohei and Nakamura, Tomohiko and Takamune, Norihiro and Saruwatari, Hiroshi},
  booktitle = {Proceedings of 2024 IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW)},
  title = {Real-Time Speech Extraction Using Spatially Regularized Independent Low-Rank Matrix Analysis and Rank-Constrained Spatial Covariance Matrix Estimation},
  year = {2024},
  month = apr,
  doi = {10.1109/ICASSPW62465.2024.10627448},
  note = {(presented in HSCMA 2024)}
}

International Conference Papers (Non-Peer-Reviewed)

2024

Real-Time Extension of Speech Extraction Method Based on Spatially Regularized ILRMA and RCSCME

Yuto Ishikawa, Tomohiko Nakamura, Norihiro Takamune, and Hiroshi Saruwatari

In The University of Auckland and The University of Tokyo Joint Workshop on Extreme Acoustics Sensing Based on Small-Data-Driven Machine Learning and Its Rescure Application, Jul 2024

(Invited)

Bib

@inproceedings{Ishikawa2024UT_NZ_JM,
  author = {Ishikawa, Yuto and Nakamura, Tomohiko and Takamune, Norihiro and Saruwatari, Hiroshi},
  booktitle = {The University of Auckland and The University of Tokyo Joint Workshop on Extreme Acoustics Sensing Based on Small-Data-Driven Machine Learning and Its Rescure Application},
  title = {Real-Time Extension of Speech Extraction Method Based on Spatially Regularized ILRMA and RCSCME},
  year = {2024},
  month = jul,
  note = {(Invited)}
}

Domestic Conference Papers

2025

拡散性雑音下リアルタイム多チャネル音声抽出のための独立深層学習行列分析を用いた雑音自己教師ありランク制約付き空間共分散行列推定法

仲西優貴, 石川悠人, 高宗典玄, and 猿渡洋

In SPEASIP2025ワークショップ, 3月 2025

Bib

@inproceedings{Nakanishi2025SPEASIP,
  author = {優貴, 仲西 and 悠人, 石川 and 典玄, 高宗 and 洋, 猿渡},
  booktitle = {SPEASIP2025ワークショップ},
  title = {拡散性雑音下リアルタイム多チャネル音声抽出のための独立深層学習行列分析を用いた雑音自己教師ありランク制約付き空間共分散行列推定法},
  year = {2025},
  month = {3月}
}

オンライン空間音声変換に向けたBSS・VC・リミックスの統合

高田賢太, 関健太郎, 齋藤佑樹, 山岡洸瑛, and 2 more authors

In SPEASIP2025ワークショップ, 3月 2025

Bib

@inproceedings{Takada2025SPEASIP,
  author = {賢太, 高田 and 健太郎, 関 and 佑樹, 齋藤 and 洸瑛, 山岡 and 悠人, 石川 and 洋, 猿渡},
  booktitle = {SPEASIP2025ワークショップ},
  title = {オンライン空間音声変換に向けたBSS・VC・リミックスの統合},
  year = {2025},
  month = {3月}
}

2024

人間とアバターとの対話システムにおける拡散性雑音下リアルタイム推定雑音を用いたLombard効果模擬音声合成のための検討

石川悠人, 武伯寒, 中村友彦, 高宗典玄, and 3 more authors

In 日本音響学会2024年秋季研究発表会, 9月 2024

Bib

@inproceedings{Ishikawa2024ASJA,
  author = {悠人, 石川 and 伯寒, 武 and 友彦, 中村 and 典玄, 高宗 and 佑樹, 齋藤 and 慎之介, 高道 and 洋, 猿渡},
  booktitle = {日本音響学会2024年秋季研究発表会},
  title = {人間とアバターとの対話システムにおける拡散性雑音下リアルタイム推定雑音を用いたLombard効果模擬音声合成のための検討},
  year = {2024},
  month = {9月}
}

独立低ランク行列分析における反復射影法の高速化・安定化アルゴリズム

石川悠人, 大久保拓哉, 高宗典玄, 北村大地, and 4 more authors

In 日本音響学会2024年春季研究発表会, 3月 2024

Bib

@inproceedings{Ishikawa2024ASAS,
  author = {悠人, 石川 and 拓哉, 大久保 and 典玄, 高宗 and 大地, 北村 and 友彦, 中村 and 洋, 猿渡 and 祐, 高橋 and 多伸, 近藤},
  booktitle = {日本音響学会2024年春季研究発表会},
  title = {独立低ランク行列分析における反復射影法の高速化・安定化アルゴリズム},
  year = {2024},
  month = {3月}
}

空間正則化付き独立低ランク行列分析におけるベクトルワイズ座標降下法の高速化・安定化アルゴリズム

石川悠人, 大久保拓哉, 高宗典玄, 北村大地, and 4 more authors

In SPEASIP2024ワークショップ, 3月 2024

Bib

@inproceedings{Ishikawa2024SPEASIP,
  author = {悠人, 石川 and 拓哉, 大久保 and 典玄, 高宗 and 大地, 北村 and 友彦, 中村 and 洋, 猿渡 and 祐, 高橋 and 多伸, 近藤},
  booktitle = {SPEASIP2024ワークショップ},
  title = {空間正則化付き独立低ランク行列分析におけるベクトルワイズ座標降下法の高速化・安定化アルゴリズム},
  year = {2024},
  month = {3月}
}

2023

目的音声の方位を用いた空間正則化付き独立低ランク行列分析による拡散性雑音下リアルタイム音声強調

石川悠人, 小中康平, 中村友彦, 高宗典玄, and 1 more author

In 日本音響学会2023年秋季研究発表会, 9月 2023

Bib

@inproceedings{Ishikawa2023ASJA,
  author = {悠人, 石川 and 康平, 小中 and 友彦, 中村 and 典玄, 高宗 and 洋, 猿渡},
  booktitle = {日本音響学会2023年秋季研究発表会},
  title = {目的音声の方位を用いた空間正則化付き独立低ランク行列分析による拡散性雑音下リアルタイム音声強調},
  year = {2023},
  month = {9月}
}

多点電気活動データを用いた神経ネットワークの3次元機能的空間マップ作成

石川悠人, 小林透己, 古川拓磨, 朝比奈昂洋, and 3 more authors

In 医用・生体工学研究会, 3月 2023

Bib

@inproceedings{Ishikawa2023NTech,
  author = {悠人, 石川 and 透己, 小林 and 拓磨, 古川 and 昂洋, 朝比奈 and 健太, 榛葉 and 潔, 小谷 and 泰彦, 神保},
  booktitle = {医用・生体工学研究会},
  title = {多点電気活動データを用いた神経ネットワークの3次元機能的空間マップ作成},
  year = {2023},
  month = {3月}
}

2022

微小電極アレイを用いた電流密度および細胞外電位の3次元空間分布の推定

石川悠人, 小林透己, 古川拓磨, 朝比奈昂洋, and 3 more authors

In 日本生体医工学会関東支部若手研究者発表会, 12月 2022

Bib

@inproceedings{Ishikawa2022NTechYoung,
  author = {悠人, 石川 and 透己, 小林 and 拓磨, 古川 and 昂洋, 朝比奈 and 健太, 榛葉 and 潔, 小谷 and 泰彦, 神保},
  booktitle = {日本生体医工学会関東支部若手研究者発表会},
  title = {微小電極アレイを用いた電流密度および細胞外電位の3次元空間分布の推定},
  year = {2022},
  month = {12月}
}