Short-time logarithm energy with a constant has be used in the place of short-time energy of classical arithmetic in this article . The quotient and product of short-time energy and short-time zcr ( zero crossing rate ) are basic parameters of the arithmetic .

本文以带常数的对数短时能量代替传统的短时能量，以 短时 过零率、短时能量之商、积作为 端点 检测算法中参量。

And it searches much further for the unvoiced frame according to the ZCR ( zero crossing rate ) which is differ from unvoiced frame to background frame .

根据背景音和 静音 过零率的不同，进一步搜索 符合要求的静音帧；

The algorithm is robust about noise rotation and so on . And it has strong security and uniqueness . ( 2 ) Based on the perceptual hashing of the speech ZCR ( zero-crossing rate ) and speech centroid a speech content authentication algorithm is proposed .

算法对旋转、噪声是鲁棒的，同时也具有较强的安全性与唯一性。（2）根据语音过零率及质心特征，设计了一种基于感知 哈希的语音内容认证算法。

The stability against playback speed modification of ZCR ( zero-crossing rate ) of audio signal is confirmed by theoretical analysis and experiments .

分析并通过实验验证了音频信号的过零率对 回放速度修改这种 去 同步 攻击的稳定性。

Based on acoustic characteristics of cough using the short time zero crossing ratio ( ZCR ) identifies the suspicious coughs in order to get the threshold of short time energy .

利用过零率 来定位可疑 咳嗽，从而确定能量阈值。