Kouei Yamaoka — accepted AI-conference papers

2021

Rotation-Robust Beamforming Based on Sound Field Interpolation with Regularly Circular Microphone Array

Yukoh Wakabayashi, Kouei Yamaoka, Nobutaka Ono

ICASSP 2021accepted

In this paper, we present a novel framework of beamforming robust for a microphone array rotation. In most array signal processing methods, the time-invariant transfer system from a source to a microphone is assumed for calculating a spatial filter. This assumption makes it difficult to use the micr…

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2019

Time-frequency-bin-wise Switching of Minimum Variance Distortionless Response Beamformer for Underdetermined Situations

Kouei Yamaoka, Nobutaka Ono, Shoji Makino, Takeshi Yamada

ICASSP 2019accepted

In this paper, we present a speech enhancement method using two microphones in underdetermined situations. Time-frequency (TF) binary masking is a conventional method of enhancing speech in underdetermined situations by appropriately multiplying each TF component by zero or one. Extending this metho…

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