Open AccessFrequency-Domain Adaptive Algorithm for Network Echo Cancellation in VoIP
Author(s) -
Xiang Lin,
Andy W. H. Khong,
Miloš Doroslovački,
Patrick A. Naylor
Publication year - 2008
Publication title -
eurasip journal on audio speech and music processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.259
H-Index - 29
eISSN - 1687-4722
pISSN - 1687-4714
DOI - 10.1155/2008/156960
Subject(s) - algorithm , computer science , convergence (economics) , echo (communications protocol) , frequency domain , computational complexity theory , domain (mathematical analysis) , selection (genetic algorithm) , voice over ip , adaptive filter , rate of convergence , mathematics , key (lock) , artificial intelligence , computer security , world wide web , economics , economic growth , computer network , mathematical analysis , the internet , computer vision
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
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