The Study Of Voice Activity Detection Algorithm Using Three Thresholds And Multiple Judgments
XU Zh · Electronic Technology · 2015
Voice activity detection is important and widely used in mobile communication, It's also key to the effect of voice processing. This paper studies a low computational complexity VAD algorithm aiming at the characteristics of mobile communication implementation. This algorithm uses three time domain features, i.e. short time energy, mean zero cross rate, mean amplitude difference to perform multiple judgments. It can achieve good results at high SNR and has good real time performance. This paper presents the signal processing flow, thresholds calculation, implementation details and experiment results of this algorithm.