Voice Activity Detection Using Wavelets Multiresolution Spectrum and Short-time Adaptive Audio Mixing Algorithm
小波变分辨率频谱特征静音检测和短时自适应混音算法

The proposed VAD uses MFCC of multiresolution spectrum and two classical audio parameters as audio feature,and prejudges silence by detection of multi-gate zero cross ratio,and classifies noise and voice by Support Vector Machines.New speech mixing algorithm used in Multipoint Control Unit(MCU) of conferences imposed short-time power of each audio stream as mixing weight vector,and was designed for parallel processing in program.Various experiments show,proposed VAD algorithm achieves overall better perform...