Graduate School and Research Center in Digital Sciences

A new cross-domain approach to synchronized adaptive echo cancellation and echo postfiltering

Yemdji, Christelle; Mossi Idrissa, Moctar; Evans, Nicholas; Beaugeant, Christophe

EUSIPCO 2012, European Signal Processing Conference, August, 27-31, 2012, Bucharest, Romania

Most acoustic echo cancellation systems are based upon an adaptive filter followed by echo postfiltering. Although the two modules have complementary functionalities, they generally operate independently. Existing approaches to synchronized echo control are somewhat limited by the need for both modules to function in the same subband or frequency domain.  This paper presents our first attempt at synchronized time-domain adaptive filtering and frequency domain echo postfiltering. The new synchronization approach exploits the relationship between the system distance in the time domain and the system mismatch power spectrum. Together with a new system distance measurement, the proposed synchronous echo control system is shown to perform well in comparison to existing state of the art approaches. 

Document Bibtex

Title:A new cross-domain approach to synchronized adaptive echo cancellation and echo postfiltering
Keywords:adaptive echo cancellation, echo postfiltering, synchronized echo control, system mismatch
Type:Conference
Language:English
City:Bucharest
Country:ROMANIA
Date:
Department:Digital Security
Eurecom ref:3734
Copyright: © EURASIP. Personal use of this material is permitted. The definitive version of this paper was published in EUSIPCO 2012, European Signal Processing Conference, August, 27-31, 2012, Bucharest, Romania and is available at :
Bibtex: @inproceedings{EURECOM+3734, year = {2012}, title = {{A} new cross-domain approach to synchronized adaptive echo cancellation and echo postfiltering}, author = {{Y}emdji, {C}hristelle and {M}ossi {I}drissa, {M}octar and {E}vans, {N}icholas and {B}eaugeant, {C}hristophe}, booktitle = {{EUSIPCO} 2012, {E}uropean {S}ignal {P}rocessing {C}onference, {A}ugust, 27-31, 2012, {B}ucharest, {R}omania}, address = {{B}ucharest, {ROMANIA}}, month = {08}, url = {http://www.eurecom.fr/publication/3734} }
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