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C-Means Clustering Applied to Speech Discrimination

Górriz, J. M. ; Ramírez, J. ; Turias, I. ; Puntonet, Carlos G. ; González, J. ; Lang, Elmar Alexandrov, Vassil N. , eds.


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 over a set of subband log-energies. Detecting the presence of speech frames (a new cluster) is achieved using a basic sequential algorithm scheme (BSAS) according ...


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