ICASSP 2015accepted0 citations
ℓ1-constrained MVDR-based selection of nonidentical directivities in microphone array
Abstract
We propose a method for finding a good combination of nonidentical directivities for a microphone array, i.e., a combination that can achieve better noise suppression. To avoid checking all combinations of directivities, the method incrementally applies ℓ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> -constrained minimum variance distortionless response beamforming to the coherently-focused power spectral density matrices of microphone array signals. The ℓ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> constraint selects microphones with greater importance by inducing a sparse filter for beamforming.
BibTeX
@inproceedings{icassp2015_1constrainedmvdr,
title = {ℓ1-constrained MVDR-based selection of nonidentical directivities in microphone array},
author = {Satoru Emura},
booktitle = {ICASSP 2015},
year = {2015}
}