Search Results for author: Shoichi Koyama

Found 13 papers, 1 papers with code

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

no code implementations11 Jan 2024 Yoshihide Tomita, Shoichi Koyama, Hiroshi Saruwatari

A method for synthesizing the desired sound field while suppressing the exterior radiation power with directional weighting is proposed.

Kernel-interpolation-based spatial active noise control with exterior radiation suppression

no code implementations29 Mar 2023 Kazuyuki Arikawa, Shoichi Koyama, Hiroshi Saruwatari

A spatial active noise control (ANC) method based on kernel interpolation of a sound field with exterior radiation suppression is proposed.

Spatial Active Noise Control Method Based On Sound Field Interpolation From Reference Microphone Signals

no code implementations28 Mar 2023 Kazuyuki Arikawa, Shoichi Koyama, Hiroshi Saruwatari

A spatial active noise control (ANC) method based on the interpolation of a sound field from reference microphone signals is proposed.

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

no code implementations23 Mar 2023 Shoichi Koyama, Keisuke Kimura, Natsuki Ueno

Two sound field reproduction methods, weighted pressure matching and weighted mode matching, are theoretically and experimentally compared.

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

no code implementations7 Mar 2023 Juliano G. C. Ribeiro, Shoichi Koyama, Hiroshi Saruwatari

An interpolation method for region-to-region acoustic transfer functions (ATFs) based on kernel ridge regression with an adaptive kernel is proposed.

regression

Weighted Pressure Matching Based on Kernel Interpolation For Sound Field Reproduction

no code implementations26 Oct 2022 Shoichi Koyama, Kazuyuki Arikawa

A sound field reproduction method called weighted pressure matching is proposed.

Region-to-region kernel interpolation of acoustic transfer function with directional weighting

no code implementations5 May 2022 Juliano G. C. Ribeiro, Shoichi Koyama, Hiroshi Saruwatari

A method of interpolating the acoustic transfer function (ATF) between regions that takes into account both the physical properties of the ATF and the directionality of region configurations is proposed.

Hyperparameter Optimization

Spatial active noise control based on individual kernel interpolation of primary and secondary sound fields

no code implementations10 Feb 2022 Kazuyuki Arikawa, Shoichi Koyama, Hiroshi Saruwatari

A spatial active noise control (ANC) method based on the individual kernel interpolation of primary and secondary sound fields is proposed.

Sound Field Reproduction With Weighted Mode Matching and Infinite-Dimensional Harmonic Analysis: An Experimental Evaluation

no code implementations22 Nov 2021 Shoichi Koyama, Keisuke Kimura, Natsuki Ueno

We evaluate weighted mode matching, which is a sound field reproduction method based on the spherical wavefunction expansion of the sound field, in comparison with conventional pressure matching.

Binaural rendering from microphone array signals of arbitrary geometry

no code implementations15 Sep 2021 Naoto Iijima, Shoichi Koyama, Hiroshi Saruwatari

To reproduce binaural signals from microphone array recordings at a remote location, a spherical microphone array is generally used for capturing a soundfield.

Position

MeshRIR: A Dataset of Room Impulse Responses on Meshed Grid Points For Evaluating Sound Field Analysis and Synthesis Methods

2 code implementations21 Jun 2021 Shoichi Koyama, Tomoya Nishida, Keisuke Kimura, Takumi Abe, Natsuki Ueno, Jesper Brunnström

Two subdatasets are currently available: one consists of IRs in a three-dimensional cuboidal region from a single source, and the other consists of IRs in a two-dimensional square region from an array of 32 sources.

Distant Speech Recognition Room Impulse Response (RIR) +2

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