Scape Synthesis: Generation of a Novel Acoustical Space Based on Auditory Perceptual Features. - Shoichi Koyama; Risa Suzuki (ICMC, 2009)

Inversewave propagation for reproducing virtual sources in front of loudspeaker array. - Shoichi Koyama; Yusuke Hiwasaki; Ken'ichi Furuya; Yoichi Haneda (EUSIPCO, 2011)

Design of transform filter for sound field reproduction using microphone array and loudspeaker array. - Shoichi Koyama; Ken'ichi Furuya; Yusuke Hiwasaki; Yoichi Haneda (WASPAA, 2011)

Design of transform filter for reproducing arbitrarily shifted sound field using phase-shift of spatio-temporal frequency. - Shoichi Koyama; Ken'ichi Furuya; Yusuke Hiwasaki; Yoichi Haneda (ICASSP, 2012)

Posterior Residual Echo Canceling and its Complexity Reduction in the Wave Domain. - Satoru Emura; Shoichi Koyama; Ken'ichi Furuya; Yoichi Haneda (IWAENC, 2012)

Reproducing Virtual Sound Sources in Front of a Loudspeaker Array Using Inverse Wave Propagator. - Shoichi Koyama; Ken'ichi Furuya; Yusuke Hiwasaki; Yoichi Haneda (IEEE Trans. Speech Audio Process., 2012)

Sound field reproduction using multiple linear arrays based on wave field reconstruction filtering in helicalwave spectrum domain. - Shoichi Koyama; Ken'ichi Furuya; Yusuke Hiwasaki; Yoichi Haneda; Yôiti Suzuki (ICASSP, 2013)

Improvement using circular harmonics beamforming on reverberation problem of wave field reconstruction filtering. - Shoichi Koyama; Timothy Lee; Ken'ichi Furuya; Yusuke Hiwasaki; Yoichi Haneda (ICASSP, 2013)

Map estimation of driving signals of loudspeakers for sound field reproduction from pressure measurements. - Shoichi Koyama; Ken'ichi Furuya; Yusuke Hiwasaki; Yoichi Haneda (WASPAA, 2013)

Analytical Approach to Wave Field Reconstruction Filtering in Spatio-Temporal Frequency Domain. - Shoichi Koyama; Ken'ichi Furuya; Yusuke Hiwasaki; Yoichi Haneda (IEEE Trans. Speech Audio Process., 2013)

Close-talking spherical microphone array using sound pressure interpolation based on spherical harmonic expansion. - Yoichi Haneda; Ken'ichi Furuya; Shoichi Koyama; Kenta Niwa (ICASSP, 2014)

Sparse sound field representation in recording and reproduction for reducing spatial aliasing artifacts. - Shoichi Koyama; Suehiro Shimauchi; Hitoshi Ohmuro (ICASSP, 2014)

STSP: Space-time stretched pulse for measuring spatio-temporal impulse response. - Shoichi Koyama; Prakhar Srivastava 001; Ken'ichi Furuya; Suehiro Shimauchi; Hitoshi Ohmuro (IWAENC, 2014)

Real-Time Sound Field Transmission System by Using Wave Field Reconstruction Filter and Its Evaluation. - Shoichi Koyama; Ken'ichi Furuya; Hisashi Uematsu; Yusuke Hiwasaki; Yoichi Haneda (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014)

Wave Field Reconstruction Filtering in Cylindrical Harmonic Domain for With-Height Recording and Reproduction. - Shoichi Koyama; Ken'ichi Furuya; Yusuke Hiwasaki; Yoichi Haneda; Yôiti Suzuki (IEEE ACM Trans. Audio Speech Lang. Process., 2014)

Sparse sound field decomposition using group sparse Bayesian learning. - Shoichi Koyama; Atsushi Matsubayashi; Naoki Murata; Hiroshi Saruwatari (APSIPA, 2015)

Sparse sound field decomposition with parametric dictionary learning for super-resolution recording and reproduction. - Naoki Murata; Shoichi Koyama; Norihiro Takamune; Hiroshi Saruwatari (CAMSAP, 2015)

Structured sparse signal models and decomposition algorithm for super-resolution in sound field recording and reproduction. - Shoichi Koyama; Naoki Murata; Hiroshi Saruwatari (ICASSP, 2015)

Statistical modeling of binaural signal and its application to binaural source separation. - Yuki Murota; Daichi Kitamura; Shoichi Koyama; Hiroshi Saruwatari; Satoshi Nakamura 001 (ICASSP, 2015)

Source-location-informed sound field recording and reproduction with spherical arrays. - Shoichi Koyama; Koichiro Ito; Hiroshi Saruwatari (WASPAA, 2015)

Audio signal separation using supervised NMF with time-variant all-pole-model-based basis deformation. - Hiroaki Nakajima; Daichi Kitamura; Norihiro Takamune; Shoichi Koyama; Hiroshi Saruwatari; Yu Takahashi; Kazunobu Kondo (APSIPA, 2016)

Reverberation-robust underdetermined source separation with non-negative tensor double deconvolution. - Naoki Murata; Hirokazu Kameoka; Keisuke Kinoshita; Shoko Araki; Tomohiro Nakatani; Shoichi Koyama; Hiroshi Saruwatari (EUSIPCO, 2016)

Music signal separation using supervised NMF with all-pole-model-based discriminative basis deformation. - Hiroaki Nakajima; Daichi Kitamura; Norihiro Takamune; Shoichi Koyama; Hiroshi Saruwatari; Nobutaka Ono; Yu Takahashi; Kazunobu Kondo (EUSIPCO, 2016)

Sound field decomposition in reverberant environment using sparse and low-rank signal models. - Shoichi Koyama; Hiroshi Saruwatari (ICASSP, 2016)

Multichannel blind source separation based on non-negative tensor factorization in wavenumber domain. - Yuki Mitsufuji; Shoichi Koyama; Hiroshi Saruwatari (ICASSP, 2016)

Sparse sound field decomposition with multichannel extension of complex NMF. - Naoki Murata; Shoichi Koyama; Hirokazu Kameoka; Norihiro Takamune; Hiroshi Saruwatari (ICASSP, 2016)

Listening-area-informed sound field reproduction with Gaussian prior based on circular harmonic expansion. - Natsuki Ueno; Shoichi Koyama; Hiroshi Saruwatari (HSCMA, 2017)

Spatio-temporal sparse sound field decomposition considering acoustic source signal characteristics. - Naoki Murata; Shoichi Koyama; Norihiro Takamune; Hiroshi Saruwatari (ICASSP, 2017)

Listening-area-informed sound field reproduction based on circular harmonic expansion. - Natsuki Ueno; Shoichi Koyama; Hiroshi Saruwatari (ICASSP, 2017)

Comparison of reverberation models for sparse sound field decomposition. - Shoichi Koyama; Laurent Daudet (WASPAA, 2017)

Exterior and Interior Sound Field Separation Using Convex Optimization: Comparison of Signal Models. - Yuhta Takida; Shoichi Koyama; Hiroshi Saruwatari (EUSIPCO, 2018)

Joint Source and Sensor Placement for Sound Field Control Based on Empirical Interpolation Method. - Shoichi Koyama; Gilles Chardon; Laurent Daudet (ICASSP, 2018)

Sound Field Reproduction with Exterior Cancellation Using Analytical Weighting of Harmonic Coefficients. - Natsuki Ueno; Shoichi Koyama; Hiroshi Saruwatari (ICASSP, 2018)

Gridless Sound Field Decomposition Based on Reciprocity Gap Functional in Spherical Harmonic Domain. - Yuhta Takida; Shoichi Koyama; Natsuki Ueno; Hiroshi Saruwatari (SAM, 2018)

Kernel Ridge Regression with Constraint of Helmholtz Equation for Sound Field Interpolation. - Natsuki Ueno; Shoichi Koyama; Hiroshi Saruwatari (IWAENC, 2018)

Sound Field Recording Using Distributed Microphones Based on Harmonic Analysis of Infinite Order. - Natsuki Ueno; Shoichi Koyama; Hiroshi Saruwatari (IEEE Signal Process. Lett., 2018)

Sparse Representation Using Multidimensional Mixed-Norm Penalty With Application to Sound Field Decomposition. - Naoki Murata; Shoichi Koyama; Norihiro Takamune; Hiroshi Saruwatari (IEEE Trans. Signal Process., 2018)

Feedforward Spatial Active Noise Control Based on Kernel Interpolation of Sound Field. - Hayato Ito; Shoichi Koyama; Natsuki Ueno; Hiroshi Saruwatari (ICASSP, 2019)

Robust Gridless Sound Field Decomposition Based on Structured Reciprocity Gap Functional in Spherical Harmonic Domain. - Yuhta Takida; Shoichi Koyama; Natsuki Ueno; Hiroshi Saruwatari (ICASSP, 2019)

Two-Dimensional Sound Field Recording With Multiple Circular Microphone Arrays Considering Multiple Scattering. - Masahiro Nakanishi; Natsuki Ueno; Shoichi Koyama; Hiroshi Saruwatari (WASPAA, 2019)

Sparse Representation of a Spatial Sound Field in a Reverberant Environment. - Shoichi Koyama; Laurent Daudet (IEEE J. Sel. Top. Signal Process., 2019)

Three-Dimensional Sound Field Reproduction Based on Weighted Mode-Matching Method. - Natsuki Ueno; Shoichi Koyama; Hiroshi Saruwatari (IEEE ACM Trans. Audio Speech Lang. Process., 2019)

Sensor placement in arbitrarily restricted region for field estimation based on Gaussian process. - Tomoya Nishida; Natsuki Ueno; Shoichi Koyama; Hiroshi Saruwatari (EUSIPCO, 2020)

Mutual-Information-Based Sensor Placement for Spatial Sound Field Recording. - Kentaro Ariga; Tomoya Nishida; Shoichi Koyama; Natsuki Ueno; Hiroshi Saruwatari (ICASSP, 2020)

Spatial Active Noise Control Based on Kernel Interpolation with Directional Weighting. - Hayato Ito; Shoichi Koyama; Natsuki Ueno; Hiroshi Saruwatari (ICASSP, 2020)

Kernel interpolation of acoustic transfer function between regions considering reciprocity. - Juliano G. C. Ribeiro; Natsuki Ueno; Shoichi Koyama; Hiroshi Saruwatari (SAM, 2020)

Binaural Rendering From Distributed Microphone Signals Considering Loudspeaker Distance in Measurements. - Naoto Iijima; Shoichi Koyama; Hiroshi Saruwatari (MMSP, 2020)

Reciprocity gap functional in spherical harmonic domain for gridless sound field decomposition. - Yuhta Takida; Shoichi Koyama; Natsuki Ueno; Hiroshi Saruwatari (Signal Process., 2020)

Optimizing Source and Sensor Placement for Sound Field Control: An Overview. - Shoichi Koyama; Gilles Chardon; Laurent Daudet (IEEE ACM Trans. Audio Speech Lang. Process., 2020)

Multichannel Non-Negative Matrix Factorization Using Banded Spatial Covariance Matrices in Wavenumber Domain. - Yuki Mitsufuji; Stefan Uhlich; Norihiro Takamune; Daichi Kitamura; Shoichi Koyama; Hiroshi Saruwatari (IEEE ACM Trans. Audio Speech Lang. Process., 2020)

Kernel-Interpolation-Based Filtered-X Least Mean Square for Spatial Active Noise Control In Time Domain. - Jesper Brunnström; Shoichi Koyama (ICASSP, 2021)

Amplitude Matching: Majorization-Minimization Algorithm for Sound Field Control Only with Amplitude Constraint. - Shoichi Koyama; Takashi Amakasu; Natsuki Ueno; Hiroshi Saruwatari (ICASSP, 2021)

Kernel Learning for Sound Field Estimation with L1 and L2 Regularizations. - Ryosuke Horiuchi; Shoichi Koyama; Juliano G. C. Ribeiro; Natsuki Ueno; Hiroshi Saruwatari (WASPAA, 2021)

Mean-Square-Error-Based Secondary Source Placement in Sound Field Synthesis with Prior Information on Desired Field. - Keisuke Kimura; Shoichi Koyama; Natsuki Ueno; Hiroshi Saruwatari (WASPAA, 2021)

MESHRIR: A Dataset of Room Impulse Responses on Meshed Grid Points for Evaluating Sound Field Analysis and Synthesis Methods. - Shoichi Koyama; Tomoya Nishida; Keisuke Kimura; Takumi Abe; Natsuki Ueno; Jesper Brunnström (WASPAA, 2021)

Binaural rendering from microphone array signals of arbitrary geometry. - Naoto Iijima; Shoichi Koyama; Hiroshi Saruwatari (CoRR, 2021)

Sound Field Reproduction With Weighted Mode Matching and Infinite-Dimensional Harmonic Analysis: An Experimental Evaluation. - Shoichi Koyama; Keisuke Kimura; Natsuki Ueno (CoRR, 2021)

Convex and Differentiable Formulation for Inverse Problems in Hilbert Spaces with Nonlinear Clipping Effects. - Natsuki Ueno; Shoichi Koyama; Hiroshi Saruwatari (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021)

Spatial Active Noise Control Based on Kernel Interpolation of Sound Field. - Shoichi Koyama; Jesper Brunnström; Hayato Ito; Natsuki Ueno; Hiroshi Saruwatari (IEEE ACM Trans. Audio Speech Lang. Process., 2021)

Multichannel Blind Source Separation Based on Evanescent-Region-Aware Non-Negative Tensor Factorization in Spherical Harmonic Domain. - Yuki Mitsufuji; Norihiro Takamune; Shoichi Koyama; Hiroshi Saruwatari (IEEE ACM Trans. Audio Speech Lang. Process., 2021)

Directionally Weighted Wave Field Estimation Exploiting Prior Information on Source Direction. - Natsuki Ueno; Shoichi Koyama; Hiroshi Saruwatari (IEEE Trans. Signal Process., 2021)

Spatial Active Noise Control Based on Individual Kernel Interpolation of Primary and Secondary Sound Fields. - Kazuyuki Arikawa; Shoichi Koyama; Hiroshi Saruwatari (ICASSP, 2022)

Variable Span Trade-Off Filter for Sound Zone Control with Kernel Interpolation Weighting. - Jesper Brunnström; Shoichi Koyama; Marc Moonen (ICASSP, 2022)

Region-to-Region Kernel Interpolation of Acoustic Transfer Function with Directional Weighting. - Juliano G. C. Ribeiro; Shoichi Koyama; Hiroshi Saruwatari (ICASSP, 2022)

Head-Related Transfer Function Interpolation From Spatially Sparse Measurements Using Autoencoder With Source Position Conditioning. - Yuki Ito; Tomohiko Nakamura; Shoichi Koyama; Hiroshi Saruwatari (IWAENC, 2022)

Physics-Informed Convolutional Neural Network with Bicubic Spline Interpolation for Sound Field Estimation. - Kazuhide Shigemi; Shoichi Koyama; Tomohiko Nakamura; Hiroshi Saruwatari (IWAENC, 2022)

Weighted Pressure Matching Based on Kernel Interpolation For Sound Field Reproduction. - Shoichi Koyama; Kazuyuki Arikawa (CoRR, 2022)

Region-to-Region Kernel Interpolation of Acoustic Transfer Functions Constrained by Physical Properties. - Juliano G. C. Ribeiro; Natsuki Ueno; Shoichi Koyama; Hiroshi Saruwatari (IEEE ACM Trans. Audio Speech Lang. Process., 2022)

Region-Restricted Sensor Placement Based on Gaussian Process for Sound Field Estimation. - Tomoya Nishida; Natsuki Ueno; Shoichi Koyama; Hiroshi Saruwatari (IEEE Trans. Signal Process., 2022)

Multichannel Active Noise Control with Exterior Radiation Suppression Based on Riemannian Optimization. - Takaaki Kojima; Kazuyuki Arikawa; Shoichi Koyama; Hiroshi Saruwatari (EUSIPCO, 2023)

Spatial Active Noise Control Method Based on Sound Field Interpolation from Reference Microphone Signals. - Kazuyuki Arikawa; Shoichi Koyama; Hiroshi Saruwatari (ICASSP, 2023)

Kernel Interpolation of Acoustic Transfer Functions with Adaptive Kernel for Directed and Residual Reverberations. - Juliano G. C. Ribeiro; Shoichi Koyama; Hiroshi Saruwatari (ICASSP, 2023)

Perceptual Quality Enhancement of Sound Field Synthesis Based on Combination of Pressure and Amplitude Matching. - Keisuke Kimura; Shoichi Koyama; Hiroshi Saruwatari (WASPAA, 2023)

Kernel Interpolation of Incident Sound Field in Region Including Scattering Objects. - Shoichi Koyama; Masaki Nakada; Juliano G. C. Ribeiro; Hiroshi Saruwatari (WASPAA, 2023)

Weighted Pressure and Mode Matching for Sound Field Reproduction: Theoretical and Experimental Comparisons. - Shoichi Koyama; Keisuke Kimura; Natsuki Ueno (CoRR, 2023)

Amplitude Matching for Multizone Sound Field Control. - Takumi Abe; Shoichi Koyama; Natsuki Ueno; Hiroshi Saruwatari (IEEE ACM Trans. Audio Speech Lang. Process., 2023)

Localizing Acoustic Energy in Sound Field Synthesis by Directionally Weighted Exterior Radiation Suppression. - Yoshihide Tomita; Shoichi Koyama; Hiroshi Saruwatari (ICASSP, 2024)

Sound Field Estimation in Region Including Scattering Objects based on Kernel Interpolation: Evaluation for Various Scatterers. - Shihori Kozuka; Shoichi Koyama; Hiroaki Itou; Noriyoshi Kamado (IWAENC, 2024)

Sound Field Estimation Using Deep Kernel Learning Regularized by the Wave Equation. - David Sundström; Shoichi Koyama; Andreas Jakobsson (IWAENC, 2024)

Physics-Informed Machine Learning For Sound Field Estimation. - Shoichi Koyama; Juliano G. C. Ribeiro; Tomohiko Nakamura; Natsuki Ueno; Mirco Pezzoli (CoRR, 2024)

Sound Field Estimation Based on Physics-Constrained Kernel Interpolation Adapted to Environment. - Juliano G. C. Ribeiro; Shoichi Koyama; Ryosuke Horiuchi; Hiroshi Saruwatari (IEEE ACM Trans. Audio Speech Lang. Process., 2024)

Physics-Informed Machine Learning for Sound Field Estimation: Fundamentals, state of the art, and challenges [Special Issue On Model-Based and Data-Driven Audio Signal Processing]. - Shoichi Koyama; Juliano G. C. Ribeiro; Tomohiko Nakamura; Natsuki Ueno; Mirco Pezzoli (IEEE Signal Process. Mag., 2024)

Physics-constrained adaptive kernel interpolation for region-to-region acoustic transfer function: a Bayesian approach. - Juliano G. C. Ribeiro; Shoichi Koyama; Hiroshi Saruwatari (EURASIP J. Audio Speech Music. Process., 2024)

Past, Present, and Future of Spatial Audio and Room Acoustics. - Shoichi Koyama; Enzo De Sena; Prasanga N. Samarasinghe; Mark R. P. Thomas; Fabio Antonacci (ICASSP, 2025)

Sound Field Estimation: Theories and Applications. - Natsuki Ueno; Shoichi Koyama (Found. Trends Signal Process., 2025)

Learning Magnitude Distribution of Sound Fields via Conditioned Autoencoder. - Shoichi Koyama; Kenji Ishizuka (CoRR, 2025)

Low-Rank Adaptation of Deep Prior Neural Networks For Room Impulse Response Reconstruction. - Mirco Pezzoli; Federico Miotello; Shoichi Koyama; Fabio Antonacci (CoRR, 2025)