按照对应的数字语音信号的短时帧，求出它的过零率。-Digital voice signals in accordance with the corresponding short-time fr a me, find its zero rate.

基于数字信号处理的数字语音处理的过零率算法的研究，算法简洁，效率高。-Based on digital signal processing digital voice processing zero-crossing rate algorithm, the algorithm is simple and efficient.