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Optimal Gain Filter Design for Perceptual Acoustic Echo Suppressor

Kihyeon KIM, Hanseok KO

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Summary :

This Letter proposes an optimal gain filter for the perceptual acoustic echo suppressor. We designed an optimally-modified log-spectral amplitude estimation algorithm for the gain filter in order to achieve robust suppression of echo and noise. A new parameter including information about interferences (echo and noise) of single-talk duration is statistically analyzed, and then the speech absence probability and the a posteriori SNR are judiciously estimated to determine the optimal solution. The experiments show that the proposed gain filter attains a significantly improved reduction of echo and noise with less speech distortion.

Publication
IEICE TRANSACTIONS on Information Vol.E92-D No.6 pp.1320-1323
Publication Date
2009/06/01
Publicized
Online ISSN
1745-1361
DOI
10.1587/transinf.E92.D.1320
Type of Manuscript
LETTER
Category
Speech and Hearing

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