Ecole d'ingénieur et centre de recherche en télécommunications

Low delay filtering for joint noise reduction and residual echo suppression

Yemdji, Christelle; Mossi, Moctar; Evans, Nicholas W D; Beaugeant, Christophe

IWAENC 2010, International Workshop on Acoustic Echo and Noise Control, August 30-September 2nd, 2010, Tel Aviv, Israel

            In telecommunications terminals speech quality is often degraded   by acoustic echo. Various approaches to echo cancellation have   been proposed and generally involve two separate stages, namely   those of adaptive echo cancellation and, as is the focus here,   residual echo suppression. Whilst computationally efficient,   residual echo suppression approaches based on gain loss control   have poor double talk performance. Sub-band approaches give   better performance but generally introduce a significant signal   delay. This paper reports new experimental work which assesses   the performance of three low delay approaches to suppress residual   echo through time domain convolution. Results show that a new   approach, based on the inverse discrete Fourier transform, performs   as well as the existing approaches for both linear and non-linear   echo whilst maintaining computational efficiency and low signal   delay.

Document Bibtex

Mots Clés:echo cancellation, echo postfiltering, linear
Type:Conférence
Langue:English
Ville:Tel Aviv
Pays:ISRAËL
Date:
Département:Communications Multimédia
Eurecom ref:3157
Copyright: Copyright VDE Verlag. Personal use of this material is permitted. The definitive version of this paper was published in IWAENC 2010, International Workshop on Acoustic Echo and Noise Control, August 30-September 2nd, 2010, Tel Aviv, Israel and is available at :
Bibtex: @inproceedings{EURECOM+3157, year = {2010}, title = {{L}ow delay filtering for joint noise reduction and residual echo suppression}, author = {{Y}emdji, {C}hristelle and {M}ossi, {M}octar and {E}vans, {N}icholas {W} {D} and {B}eaugeant, {C}hristophe }, booktitle = {{IWAENC} 2010, {I}nternational {W}orkshop on {A}coustic {E}cho and {N}oise {C}ontrol, {A}ugust 30-{S}eptember 2nd, 2010, {T}el {A}viv, {I}srael}, address = {{T}el {A}viv, {ISRA}{\"{E}}{L}}, month = {08}, url = {http://www.eurecom.fr/publication/3157} }
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