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 Results 1 - 13 of 13  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
EA 2022-05-13
Online Online Directionally-weighted region-to-region kernel interpolation of acoustic transfer function
Juliano G. C. Ribeiro, Shoichi Koyama, Hiroshi Saruwatari (UTokyo) EA2022-4
An interpolation method for the acoustic transfer function (ATF) for variable source and receiver points within regions ... [more] EA2022-4
EA, SIP, SP, IPSJ-SLP [detail] 2022-03-02
(Primary: On-site, Secondary: Online)
[Poster Presentation] Filtered-X LMS algorithm based on individual interpolation of primary and secondary sound fields for spatial active noise control
Kazuyuki Arikawa, Shoichi Koyama, Hiroshi Saruwatari (The Univ. of Tokyo) EA2021-84 SIP2021-111 SP2021-69
Spatial active noise control (ANC), which aims to reduce noise over a three-dimensional target region, has at- tracted a... [more] EA2021-84 SIP2021-111 SP2021-69
EA, SIP, SP, IPSJ-SLP [detail] 2022-03-02
(Primary: On-site, Secondary: Online)
[Poster Presentation] Sound Field Estimation from Small Number of Observations by Deep Learning with Difference-Approximation-Based Helmholtz-Equation Loss Function
Kazuhide Shigemi, Shoichi Koyama, TomohikoNakamura, Hiroshi Saruwatari (UTokyo) EA2021-85 SIP2021-112 SP2021-70
We propose a single-frequency sound field estimation method from a small number of observations that uses a loss functio... [more] EA2021-85 SIP2021-112 SP2021-70
EA, SIP, SP, IPSJ-SLP [detail] 2022-03-02
(Primary: On-site, Secondary: Online)
[Poster Presentation] Interpolation of head-related transfer function from small amount of observation data using deep learning based on spherical wavefunction expansion
Yuki Ito, Tomohiko Nakamura, Shoichi Koyama, Hiroshi Saruwatari (UTokyo) EA2021-90 SIP2021-117 SP2021-75
In binaural synthesis, listeners' individual head-related transfer functions (HRTFs) are necessary for highly-immersive ... [more] EA2021-90 SIP2021-117 SP2021-75
SP, EA, SIP 2020-03-02
Okinawa Okinawa Industry Support Center
(Cancelled but technical report was issued)
[Poster Presentation] Sensor placement allowing independent setting of estimation and candidate regions for field estimation based on Gaussian process
Tomoya Nishida, Natsuki Ueno, Shoichi Koyama, Hiroshi Saruwatari (Univ Tokyo) EA2019-125 SIP2019-127 SP2019-74
 [more] EA2019-125 SIP2019-127 SP2019-74
SP, EA, SIP 2020-03-02
Okinawa Okinawa Industry Support Center
(Cancelled but technical report was issued)
[Poster Presentation] Restoration of clipped signal using oversampling based on differentiable and convex loss function
Natsuki Ueno, Shoichi Koyama, Hiroshi Saruwatari (Univ. Tokyo) EA2019-126 SIP2019-128 SP2019-75
A signal reconstruction method of clipped time-continuous signal using oversampling is proposed. The signal reconstructi... [more] EA2019-126 SIP2019-128 SP2019-75
Kyoto Doshisha Univ. [Poster Presentation] Region-to-region acoustic transfer function estimation with distributed sources and receivers based on kernel interpolation
Juliano G. C. Ribeiro, Natsuki Ueno, Shoichi Koyama, Hiroshi Saruwatari (Univ. Tokyo) EA2019-98
 [more] EA2019-98
Osaka   [Poster Presentation] Performance improvement of gridless sound field decomposition using signal separation based on convex optimization
Yuhta Takida, Shoichi Koyama, Natsuki Ueno, Hiroshi Saruwatari (The Univ. of Tokyo) EA2017-87
A sound field reconstruction method inside a region including sound sources is proposed. Previously, a method based on a... [more] EA2017-87
Kyoto Doshisha Univ. [Poster Presentation] Listening-area-informed sound field reproduction -- A case study on arbitrary configuration and directivity of loudspeakers --
Natsuki Ueno, Shoichi Koyama, Hiroshi Saruwatari (Univ. Tokyo) EA2016-69
A sound field reproduction method using prior information on listening areas is proposed. Most current methods aim to re... [more] EA2016-69
EA 2015-12-11
Ishikawa Kanazawa Univ., Satellite Plaza [Poster Presentation] Analysis on Degree of Freedom for Supervised NMF with All-Pole-Model-Based Basis Deformation
Hiroaki Nakajima (UTokyo), Daichi Kitamura (SOKENDAI), Norihiro Takamune, Shoichi Koyama, Hiroshi Saruwatari (UTokyo), Nobutaka Ono (NII/SOKENDAI), Yu Takahashi, Kazunobu Kondo (Yamaha) EA2015-42
Conventional supervised NMF has the critical problem that a mismatch between the bases trained in advance and the target... [more] EA2015-42
Kyoto Doshisha Univ. Simultaneous adaptation of time-series a priori statistical model and spectral basis for binaural source separation
Yuki Murota (NAIST), Daichi Kitamura (NII), Shoichi Koyama, Hiroshi Saruwatari (The Univ. of Tokyo), Satoshi Nakamura (NAIST) EA2014-64
In this paper, we propose a new approach for addressing binaural music signal separation based on the simultaneous adapt... [more] EA2014-64
EA 2014-03-28
Tokyo NHK Science & Technology Research Labs. Robustness of spherical and cylindrical microphone arrays in harmonic beamforming applications
Jorge Trevino (Tohoku Univ.), Shoichi Koyama (NTT), Shuichi Sakamoto, Yo-iti Suzuki (Tohoku Univ.) EA2013-126
Microphone arrays are commonly used to record spatial sound information. Several techniques, collectively known as harmo... [more] EA2013-126
SIP, EA 2008-05-29
Osaka Kansai Univ. Direct algorithm of wave source localization based weighted integral of partial differential equation -- Theory and simulation --
Shoichi Koyama, Toru Kurihara, Shigeru Ando (Univ. Tokyo) EA2008-12 SIP2008-21
We deal with the problem of direction estimate and distance estimate of emission sources in 3-D space. We first introduc... [more] EA2008-12 SIP2008-21
 Results 1 - 13 of 13  /   
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