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Jointly gaussian pdf based likelihood ratio test for voice activity detection

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



Abstract

This paper presents a novel voice activity detector (VAD) for improving speech detection robustness in noisy environments and the performance of speech recognition systems in real-time applications. The algorithm is based on a generalized complex Gaussian (GCG) observation model and defines an optimal likelihood ratio test (LRT) involving multiple and correlated observations (MCO) based on ...

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