Frequency-Domain Adaptive Algorithm for Network Echo Cancellation in VoIP

Autor: Patrick A. Naylor, Milŏs Doroslovăcki, Andy W. H. Khong, Xiang (Shawn) Lin
Jazyk: angličtina
Rok vydání: 2008
Předmět:
Zdroj: EURASIP Journal on Audio, Speech, and Music Processing, Vol 2008 (2008)
Druh dokumentu: article
ISSN: 1687-4714
1687-4722
DOI: 10.1155/2008/156960
Popis: We propose a new low complexity, low delay, and fast converging frequency-domain adaptive algorithm for network echo cancellation in VoIP exploiting MMax and sparse partial (SP) tap-selection criteria in the frequency domain. We incorporate these tap-selection techniques into the multidelay filtering (MDF) algorithm in order to mitigate the delay inherent in frequency-domain algorithms. We illustrate two such approaches and discuss their tradeoff between convergence performance and computational complexity. Simulation results show an improvement in convergence rate for the proposed algorithm over MDF and significantly reduced complexity. The proposed algorithm achieves a convergence performance close to that of the recently proposed, but substantially more complex improved proportionate MDF (IPMDF) algorithm.
Databáze: Directory of Open Access Journals
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