Acceleration of rank-constrained spatial covariance matrix estimation for blind speech extraction

In this paper, we propose new accelerated update rules for rank-constrained spatial covariance model estimation, which efficiently extracts a directional target source in diffuse background noise. The naive update rule requires heavy computation such as matrix inversion or matrix multiplication. We...

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Bibliographic Details
Published in:Proceedings ... Asia-Pacific Signal and Information Processing Association Annual Summit and Conference APSIPA ASC ... (Online) pp. 332 - 338
Main Authors: Kubo, Yuki, Takamune, Norihiro, Kitamura, Daichi, Saruwatari, Hiroshi
Format: Conference Proceeding
Language:English
Published: IEEE 01.11.2019
Subjects:
Acceleration
Computational complexity
Computational modeling
Covariance matrices
Eigenvalues and eigenfunctions
Estimation
Time-frequency analysis
ISSN:2640-0103
Online Access:Get full text
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Summary:In this paper, we propose new accelerated update rules for rank-constrained spatial covariance model estimation, which efficiently extracts a directional target source in diffuse background noise. The naive update rule requires heavy computation such as matrix inversion or matrix multiplication. We resolve this problem by expanding matrix inversion to reduce computational complexity; in the parameter update step, we need neither matrix inversion nor multiplication. In an experiment, we show that the proposed accelerated update rule achieves 87 times faster calculation than the naive one.
ISSN:2640-0103
DOI:10.1109/APSIPAASC47483.2019.9023281