过零率 (zero-crossing rate,ZCR)是指一个信号的符号变化的比率,例如信号从正数变成负数或反向。 这个特征在语音对比、语音识别和音乐信息检索(music information retrieval)领域得到广泛使用,是对敲击声音的进行分类的主要特征。常用于分析一段声音。
At first, based on the analysis of speech signal, this thesis modified the arithmetic of short-time zero crossing ratio, and also modified end-point detection method using two factors of amplitude and short-time zero crossing ratio.
首先,文章在对语音信号进行分析的基础上,对短视平均过零率的算法进行了改进,又利用幅度和短时平均过零率两个参数改进了端点检测的方法。
参考来源 - 基于隐马尔可夫模型的语音识别方法的研究The stability against playback speed modification of ZCR(zero-crossing rate) of audio signal is confirmed by theoretical analysis and experiments.
6.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。
参考来源 - 数字图像水印与量化音频水印的若干关键技术研究·2,447,543篇论文数据,部分数据来源于NoteExpress
提出一种新的信号分析方法,即信号的过零率分析法,并对其进行了论证。
The method is suitable to analyze and identify the target signals of acoustic fuzes .
该文提出一种新的信号分析方法,即信号的过零率分析法,并对其进行了论证。
A new signal analysis method, the analysis of zero pass rate of the signal, is demonstrated and put forward in this paper.
介绍了一种平均幅度和加权过零率的VAD算法,并对该算法进行了硬件实现。
This paper introduces a VAD algorithm with average of the magnitude and weighted zero crossing rate, and the algorithm has been implemented by hardware.
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