Method and system for near-end detection

A system and method for near-end detection of voice in speakerphone mode is provided. The method can include determining a convergence of an adaptive filter, determining a dissimilarity between an autocorrelation of an echo estimate and an autocorrelation of a microphone signal if the adaptive filte...

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Bibliographic Details
Main Authors Patel, Anil N, Sreenivas Rao, Satish K, Kishore A, Krishna, M. N, Charan
Format Patent
LanguageEnglish
Published 19.05.2009
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Summary:A system and method for near-end detection of voice in speakerphone mode is provided. The method can include determining a convergence of an adaptive filter, determining a dissimilarity between an autocorrelation of an echo estimate and an autocorrelation of a microphone signal if the adaptive filter has converged, computing a weighting factor based on the dissimilarity, applying the weighting factor to a voice activity level to produce a weighted voice activity level, comparing the weighted voice activity level to a constant threshold, and performing a muting operation in accordance with the comparing for providing half-duplex communication.