2025

1. 

   Sound Field Estimation: Theories and Applications (Foundations and Trends® in Signal Processing)

   Natsuki Ueno, and Shoichi Koyama

   2025

   arXiv Bib HTML

   @book{Ueno:FnT_SP2025,
     author = {Ueno, Natsuki and Koyama, Shoichi},
     title = {Sound Field Estimation: Theories and Applications (Foundations and Trends® in Signal Processing)},
     volume = {19},
     number = {1},
     pages = {1-98},
     year = {2025},
     publisher = {Now Publishers},
     doi = {10.1561/2000000121},
     isbn = {1638285241},
   }

2. 

   Physics-Informed Machine Learning For Sound Field Estimation: Fundamentals, state of the art, and challenges

   Shoichi Koyama, Juliano G. C. Ribeiro, Tomohiko Nakamura, Natsuki Ueno, and Mirco Pezzoli

   IEEE Signal Processing Magazine, 2025

   arXiv Bib HTML Code

   @article{Koyama:IEEE_M_SP2025,
     author = {Koyama, Shoichi and Ribeiro, Juliano G. C. and Nakamura, Tomohiko and Ueno, Natsuki and Pezzoli, Mirco},
     title = {Physics-Informed Machine Learning For Sound Field Estimation: Fundamentals, state of the art, and challenges},
     journal = {{IEEE} Signal Processing Magazine},
     volume = {41},
     number = {6},
     pages = {60-71},
     year = {2025},
     doi = {10.1109/MSP.2024.3465896},
   }

3. ICASSP

   Past, Present, and Future of Spatial Audio and Room Acoustics

   Shoichi Koyama, Enzo De Sena, Prasanga Samarasinghe, Mark R. P. Thomas, and Fabio Antonacci

   In Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Apr 2025

   arXiv Bib HTML

   @inproceedings{Koyama:ICASSP2025,
     author = {Koyama, Shoichi and Sena, Enzo De and Samarasinghe, Prasanga and Thomas, Mark R. P. and Antonacci, Fabio},
     title = {Past, Present, and Future of Spatial Audio and Room Acoustics},
     booktitle = {Proceedings of {IEEE} International Conference on Acoustics, Speech, and Signal Processing ({ICASSP})},
     address = {Hyderabad, India},
     month = apr,
     year = {2025},
     doi = {10.1109/ICASSP49660.2025.10890366},
   }

2024

1. IEEE TASLP

   Sound Field Estimation Based on Physics-Constrained Kernel Interpolation Adapted to Environment

   Juliano G. C. Ribeiro, Shoichi Koyama, Ryosuke Horiuchi, and Hiroshi Saruwatari

   IEEE/ACM Transactions on Audio, Speech, and Language Processing, Apr 2024

   Bib HTML PDF Code

   @article{Ribeiro:IEEE_ACM_J_ASLP2024,
     author = {Ribeiro, Juliano G. C. and Koyama, Shoichi and Horiuchi, Ryosuke and Saruwatari, Hiroshi},
     title = {Sound Field Estimation Based on Physics-Constrained Kernel Interpolation Adapted to Environment},
     journal = {{IEEE/ACM} Transactions on Audio, Speech, and Language Processing},
     volume = {32},
     pages = {4369-4383},
     year = {2024},
     doi = {10.1109/TASLP.2024.3467951},
   }

2. Physics-constrained adaptive kernel interpolation for region-to-region acoustic transfer function: a Bayesian approach

   Juliano G. C. Ribeiro, Shoichi Koyama, and Hiroshi Saruwatari

   EURASIP Journal on Audio, Speech, and Music Processing, Apr 2024

   [Invited]

   Bib HTML PDF

   @article{Ribeiro:EURASIP_JASM2024,
     author = {Ribeiro, Juliano G. C. and Koyama, Shoichi and Saruwatari, Hiroshi},
     title = {Physics-constrained adaptive kernel interpolation for region-to-region acoustic transfer function: a Bayesian approach},
     journal = {{EURASIP} Journal on Audio, Speech, and Music Processing},
     number = {43},
     year = {2024},
     doi = {10.1186/s13636-024-00362-6},
   }

3. Fundamentals of spatial active noies control: From point control to region control

   Shoichi Koyama

   Journal of the Acoustical Society of Japan, Apr 2024

   (in Japanese)

   Bib HTML

   @article{Koyama:ASJ_J2024_en,
     author = {Koyama, Shoichi},
     title = {Fundamentals of spatial active noies control: From point control to region control},
     journal = {Journal of the Acoustical Society of Japan},
     volume = {80},
     number = {5},
     doi = {10.20697/jasj.80.5_274},
     pages = {274-281},
     year = {2024},
     note = {(in Japanese)}
   }

4. ICASSP

   Localizing Acoustic Energy in Sound Field Synthesis by Directionally Weighted Exterior Radiation Suppression

   Yoshihide Tomita, Shoichi Koyama, and Hiroshi Saruwatari

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

   arXiv Bib HTML Slides

   @inproceedings{Tomita:ICASSP2024,
     author = {Tomita, Yoshihide and Koyama, Shoichi and Saruwatari, Hiroshi},
     title = {Localizing Acoustic Energy in Sound Field Synthesis by Directionally Weighted Exterior Radiation Suppression},
     booktitle = {Proceedings of {IEEE} International Conference on Acoustics, Speech, and Signal Processing ({ICASSP})},
     address = {Seoul, Republic of Korea},
     month = apr,
     year = {2024},
     doi = {10.1109/ICASSP48485.2024.10448224},
     pages = {321-325},
   }

5. Sound field estimation in region including scattering objects based on kernel interpolation: Evaluation for various scatterers

   Shihori Kozuka, Shoichi Koyama, Hiroaki Itou, and Noriyoshi Kamado

   In Proceedings of International Workshop on Acoustic Signal Enhancement (IWAENC), Sep 2024

   Bib HTML

   @inproceedings{Kozuka:IWAENC2024,
     author = {Kozuka, Shihori and Koyama, Shoichi and Itou, Hiroaki and Kamado, Noriyoshi},
     title = {Sound field estimation in region including scattering objects based on kernel interpolation: Evaluation for various scatterers},
     booktitle = {Proceedings of International Workshop on Acoustic Signal Enhancement ({IWAENC})},
     month = sep,
     year = {2024},
     pages = {324-328},
     doi = {10.1109/IWAENC61483.2024.10694564},
   }

6. Sound Field Estimation Using Deep Kernel Learning Regularized by the Wave Equation

   David Sundström, Shoichi Koyama, and Andreas Jakobsson

   In Proceedings of International Workshop on Acoustic Signal Enhancement (IWAENC), Sep 2024

   arXiv Bib HTML Code

   @inproceedings{Sundstroem:IWAENC2024,
     author = {Sundstr\"{o}m, David and Koyama, Shoichi and Jakobsson, Andreas},
     title = {Sound Field Estimation Using Deep Kernel Learning Regularized by the Wave Equation},
     booktitle = {Proceedings of International Workshop on Acoustic Signal Enhancement ({IWAENC})},
     month = sep,
     year = {2024},
     pages = {319-323},
     doi = {10.1109/IWAENC61483.2024.10694564},
   }

7. Physics-Informed Machine Learning For Sound Field Estimation and Control

   Shoichi Koyama

   In Polytechnic Uniersity of Milan, seminar talk, Sep 2024

   HTML Slides
8. Physics-Informed Machine Learning For Sound Field Estimation and Control

   Shoichi Koyama

   In Technical University of Denmark, seminar talk, Sep 2024
9. Physics-Informed Machine Learning For Sound Field Estimation and Control

   Shoichi Koyama

   In Lund University, seminar talk, Sep 2024
10. Capturing and Reproducing Spatial Sound: Physics-based Approach to VR/AR audio

    Shoichi Koyama

    In Multiple Input Modalities and Sensations for VR/AR Interactions (MIMSVAI, in conjunction with UbiComp/ISWC), Keynote talk, Oct 2024

    HTML Slides
11. Physics-Informed Machine Learning For Sound Field Estimation and Control

    Shoichi Koyama

    In The Australian National University, seminar talk, Oct 2024
12. Audio Processing Technology For Delivering Sounds You Want to Hear and Preventing Sounds You Don’t Want to Hear

    Shoichi Koyama

    In 13th US-Japan Hi-Tech Industrialization Forum, Dec 2024

2023

1. 

   Weighted Pressure and Mode Matching for Sound Field Reproduction: Theoretical and Experimental Comparisons

   Shoichi Koyama, Keisuke Kimura, and Natsuki Ueno

   Journal of the Audio Engineering Society, Dec 2023

   [Invited]

   Bib HTML PDF Code

   @article{Koyama:JAES2023,
     author = {Koyama, Shoichi and Kimura, Keisuke and Ueno, Natsuki},
     title = {Weighted Pressure and Mode Matching for Sound Field Reproduction: Theoretical and Experimental Comparisons},
     journal = {Journal of the Audio Engineering Society},
     volume = {71},
     number = {4},
     pages = {173-185},
     year = {2023},
     doi = {10.17743/jaes.2022.0058},
   }

2. IEEE TASLP

   Amplitude Matching for Multizone Sound Field Control

   Takumi Abe, Shoichi Koyama, Natsuki Ueno, and Hiroshi Saruwatari

   IEEE/ACM Transactions on Audio, Speech, and Language Processing, Dec 2023

   Bib HTML PDF Code Slides Video

   @article{Abe:IEEE_ACM_J_ASLP2023,
     author = {Abe, Takumi and Koyama, Shoichi and Ueno, Natsuki and Saruwatari, Hiroshi},
     title = {Amplitude Matching for Multizone Sound Field Control},
     journal = {{IEEE/ACM} Transactions on Audio, Speech, and Language Processing},
     volume = {31},
     pages = {656-669},
     year = {2023},
     doi = {10.1109/TASLP.2022.3231715},
   }

3. ICASSP

   Spatial active noise control method based on sound field interpolation from reference microphone signals

   Kazuyuki Arikawa, Shoichi Koyama, and Hiroshi Saruwatari

   In Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Jun 2023

   arXiv Bib HTML Slides Video

   @inproceedings{Arikawa:ICASSP2023,
     author = {Arikawa, Kazuyuki and Koyama, Shoichi and Saruwatari, Hiroshi},
     title = {Spatial active noise control method based on sound field interpolation from reference microphone signals},
     booktitle = {Proceedings of {IEEE} International Conference on Acoustics, Speech, and Signal Processing ({ICASSP})},
     address = {Rhodes island, Greece},
     month = jun,
     year = {2023},
     doi = {10.1109/ICASSP49357.2023.10097189},
   }

4. ICASSP

   Kernel interpolation of acoustic transfer functions with adaptive kernel for directed and residual reverberations

   Juliano G. C. Ribeiro, Shoichi Koyama, and Hiroshi Saruwatari

   In Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Jun 2023

   arXiv Bib HTML Slides Video

   @inproceedings{Ribeiro:ICASSP2023,
     author = {Ribeiro, Juliano G. C. and Koyama, Shoichi and Saruwatari, Hiroshi},
     title = {Kernel interpolation of acoustic transfer functions with adaptive kernel for directed and residual reverberations},
     booktitle = {Proceedings of {IEEE} International Conference on Acoustics, Speech, and Signal Processing ({ICASSP})},
     address = {Rhodes island, Greece},
     month = jun,
     year = {2023},
     doi = {10.1109/ICASSP49357.2023.10095429},
   }

5. Multichannel Active Noise Control with Exterior Radiation Suppression Based on Riemannian Optimization

   Takaaki Kojima, Kazuyuki Arikawa, Shoichi Koyama, and Hiroshi Saruwatari

   In Proceedings of European Signal Processing Conference (EUSIPCO), Sep 2023

   arXiv Bib HTML

   @inproceedings{Kojima:EUSIPCO2023,
     author = {Kojima, Takaaki and Arikawa, Kazuyuki and Koyama, Shoichi and Saruwatari, Hiroshi},
     title = {Multichannel Active Noise Control with Exterior Radiation Suppression Based on Riemannian Optimization},
     booktitle = {Proceedings of European Signal Processing Conference ({EUSIPCO})},
     address = {Helsinki, Finland},
     month = sep,
     year = {2023},
     pages = {96-100},
     doi = {10.23919/EUSIPCO58844.2023.10289919},
   }

6. WASPAA

   Perceptual Quality Enhancement of Sound Field Synthesis Based on Combination of Pressure and Amplitude Matching

   Keisuke Kimura, Shoichi Koyama, and Hiroshi Saruwatari

   In Proceedings of IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA), Oct 2023

   arXiv Bib HTML Slides Video

   @inproceedings{Kimura:WASPAA2023,
     author = {Kimura, Keisuke and Koyama, Shoichi and Saruwatari, Hiroshi},
     title = {Perceptual Quality Enhancement of Sound Field Synthesis Based on Combination of Pressure and Amplitude Matching},
     booktitle = {Proceedings of {IEEE} Workshop on Applications of Signal Processing to Audio and Acoustics ({WASPAA})},
     month = oct,
     year = {2023},
     doi = {10.1109/WASPAA58266.2023.10248106},
   }

7. WASPAA

   Kernel Interpolation of Incident Sound Field in Region Including Scattering Objects

   Shoichi Koyama, Masaki Nakada, Juliano G. C. Ribeiro, and Hiroshi Saruwatari

   In Proceedings of IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA), Oct 2023

   arXiv Bib HTML Slides Video

   @inproceedings{Koyama:WASPAA2023,
     author = {Koyama, Shoichi and Nakada, Masaki and Ribeiro, Juliano G. C. and Saruwatari, Hiroshi},
     title = {Kernel Interpolation of Incident Sound Field in Region Including Scattering Objects},
     booktitle = {Proceedings of {IEEE} Workshop on Applications of Signal Processing to Audio and Acoustics ({WASPAA})},
     month = oct,
     year = {2023},
     doi = {10.1109/WASPAA58266.2023.10248156},
   }

8. Sound Field Analysis and Synthesis: Recent Advances and Applications to Spatial Audio

   Shoichi Koyama

   In Aalto University, Acoustics Lab, seminar talk, Sep 2023