DocumentCode :
695572
Title :
Comparison of multiple-microphone and single-loudspeaker adaptive feedback/echo cancellation systems
Author :
Meng Guo ; Elmedyb, Thomas Bo ; Jensen, Soren Holdt ; Jensen, Jesper
Author_Institution :
Oticon A/S, Smørum, Denmark
fYear :
2011
fDate :
Aug. 29 2011-Sept. 2 2011
Firstpage :
1279
Lastpage :
1283
Abstract :
Recently, we introduced a frequency domain measure - the power transfer function - to predict the convergence rate, system stability bound and the steady-state behavior across time and frequency of a least mean square based feedback/echo cancellation algorithm in a general multiple-microphone and single-loudspeaker system. In this work, we extend the theoretical analysis to the normalized least mean square and recursive least squares algorithms. Furthermore, we compare and discuss the system behaviors in terms of the power transfer function for all three adaptive algorithms.
Keywords :
acoustic signal processing; convergence; echo suppression; least mean squares methods; loudspeakers; microphone arrays; recursive estimation; convergence rate prediction; frequency domain measure; multiple-microphone adaptive feedback; multiple-microphone echo cancellation system; normalized least mean square algorithm; power transfer function; recursive least squares algorithm; single-loudspeaker adaptive feedback; single-loudspeaker echo cancellation system; steady-state behavior prediction; system stability bound prediction; Convergence; Echo cancellers; Least squares approximations; Loudspeakers; Steady-state; Transfer functions;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing Conference, 2011 19th European
Conference_Location :
Barcelona
ISSN :
2076-1465
Type :
conf
Filename :
7073922
Link To Document :
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