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http://dx.doi.org/10.7840/kics.2014.39C.12.1346

Spectro-Temporal Filtering Based on Soft Decision for Stereophonic Acoustic Echo Suppression  

Lee, Chul Min (Seoul National University, Department of Electrical and Computer Engineering and Institute of New Media and Communications)
Bae, Soo Hyun (Seoul National University, Department of Electrical and Computer Engineering and Institute of New Media and Communications)
Kim, Jeung Hun (Seoul National University, Department of Electrical and Computer Engineering and Institute of New Media and Communications)
Kim, Nam Soo (Seoul National University, Department of Electrical and Computer Engineering and Institute of New Media and Communications)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.39C, no.12, 2014 , pp. 1346-1351 More about this Journal
Abstract
We propose a novel approach for stereophonic acoustic echo suppression using spectro-temporal filtering based on soft decision. Unlike the conventional approaches estimating the echo pathes directly, the proposed technique can estimate stereo echo spectra without any double-talk detector. In order to improve the estimation of echo spectra, the extended power spectrum density matrix and echo overestimation control matrix are applied on this method. In addition, this echo suppression technique is based on soft decision technique using speech absence probability in STFT domain. Experimental results show that the proposed method improves compared with the conventional approaches.
Keywords
Acoustic echo cancellation; stereophonic acoustic echo suppression; spectro-temporal correlation; signal-to-echo ratio; soft decision;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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