Title :
Fullband-subband automatic switching scheme for stereophonic acoustic echo cancellation
Author :
Tangsangiumvisai, N. ; Chambers, J.A.
Author_Institution :
Commun. & Signals Process. Res. Group, Imperial Coll. of Sci., Technol. & Med., London, UK
fDate :
12/7/2000 12:00:00 AM
Abstract :
A new combination of fullband and subband algorithms, with a particular automatic switching scheme, is proposed to obtain convergence rate improvement and complexity reduction for teleconferencing systems. The switching criterion of the proposed algorithm, based upon the autocorrelation function of the error signal, is introduced to avoid dependency upon signal-to-noise ratio. Simulation examples suggest that enhanced performance can be achieved at low computational cost
Keywords :
adaptive filters; correlation methods; echo suppression; teleconferencing; autocorrelation function; complexity reduction; computational cost; convergence rate improvement; fullband-subband automatic switching scheme; signal-to-noise ratio; stereophonic acoustic echo cancellation; switching criterion; teleconferencing systems;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20001458
