Graduate School and Research Center in Digital Sciences

Non-linear acoustic echo cancellation using empirical mode decomposition

Gudupudi, Leela K; Chatlani, Navin; Beaugeant, Christophe; Evans, Nicholas

ICASSP 2015, 40th IEEE International Conference on Acoustics, Speech and Signal Processing, 19-24 April 2015, Brisbane, Australia

The increasing popularity of miniature devices and loudspeakers has fuelled research in non-linear acoustic echo cancellation (NAEC). This paper reports a novel approach to NAEC based on empirical mode decomposition (EMD), a recently developed technique in non-linear and non-stationary signal analysis. EMD decomposes any signal into a finite number of time varying sub-band signals termed intrinsic mode functions (IMFs). The new approach to NAEC presented here incorporates this multi-resolution analysis with conventional power filtering to estimate non-linear echo in each IMF. Comparative experiments with a competitive baseline approach to NAEC based on pure power filtering show that the new EMD approach achieves greater non-linear echo reduction and faster convergence. 

Document Doi Bibtex

Title:Non-linear acoustic echo cancellation using empirical mode decomposition
Keywords:Echo cancellation, non-linear modelling, empirical mode decomposition (EMD), intrinsic mode functions (IMF)
Department:Digital Security
Eurecom ref:4495
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Bibtex: @inproceedings{EURECOM+4495, doi = {}, year = {2015}, title = {{N}on-linear acoustic echo cancellation using empirical mode decomposition}, author = {{G}udupudi, {L}eela {K} and {C}hatlani, {N}avin and {B}eaugeant, {C}hristophe and {E}vans, {N}icholas}, booktitle = {{ICASSP} 2015, 40th {IEEE} {I}nternational {C}onference on {A}coustics, {S}peech and {S}ignal {P}rocessing, 19-24 {A}pril 2015, {B}risbane, {A}ustralia}, address = {{B}risbane, {AUSTRALIA}}, month = {04}, url = {} }
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