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Bispectrum-based statistical tests for VAD

Górriz, J. M. ; Ramírez, J. ; Puntonet, C. G. ; Theis, Fabian J. ; Lang, Elmar


In this paper we propose a voice activity detection (VAD) algorithm for improving speech recognition performance in noisy environments. The approach is based on statistical tests applied to multiple observation window based on the determination of the speech/non-speech bispectra by means of third order auto-cumulants. This algorithm differs from many others in the way the decision rule is ...


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