A voice activity detector (VAD) is a device, which analyses a speech signal and generates the signal corresponding to the period containing only noise. In the present work is offered VAD, which increases the probability of correct detection the presence or absence of human speech.
The correct detection begins with SNR 7-10 dB. The quality of  derived speech signal remains the same.  

Keywords: voice activity detection, voice activity detector, VAD, silent interval detection, speech, speech signals