摘要
分析了各种VAD算法,研究了小波去除噪声技术和门限值设定对VAD算法的影响,设计了一种优化的基于短时能量和过零率的VAD算法并实现了基于Matlab的仿真。
The VAD various algorithms are analyzed in this paper and the influence of the wavelet noise eliminating technology and the threshold setting on the VAD algorithms are studied too.An optimum VAD algorithm based on the shorttime energy and zero-cross rate is designed and then the simulation on it is realized on Matlab.
出处
《青海大学学报（自然科学版）》
2009年第2期29-33,共5页
Journal of Qinghai University(Natural Science)
关键词
VAD
小波
短时能量
过零率
VAD
wavelet
shorttime energy
zero-cross rate
