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Hard C-means clustering for voice activity detection

Górriz, J. M. ; Ramirez, J. ; Lang, Elmar ; Puntonet, Carlos G.


An effective voice activity detection (VAD) algorithm is proposed for improving speech recognition performance in noisy environments. The proposed speech/pause discrimination method is based on a hard-decision clustering approach built on a set of subband log-energies and noise prototypes that define a cluster. Detecting the presence of speech (a new cluster) is achieved using a basic sequential ...


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