Voice activity detection G729B improvement technique using K-Nearest Neighbor method
Suryo Adhi Wibowo, Koredianto Usman · Distributed Frameworks for Multimedia Applications · 2010
ITU-T G.729B describes about Discontinuous Transmission (DTX) in the system. Discontinuous Transmission (DTX) is known as a transmission method that transmits a few bits of voice under influenced of background noise or un-voiced signal. This characteristic gives advantageous in voice activity detection to classify signal. In this paper we improve the performance of voice activity detection G729B using K-Nearest Neighbor method for voice or unvoiced classification. Computer simulations showed that this method has performance better than the original VAD G729B in all tested noise conditions.