过零率(Zero Crossing Rate)是在每个音框中,音讯通过零点的次数,具有如下特性: 一般而言,杂讯的过零大于气音的过零率,而气音的过零率又大于有声音的过零率 通常在断点侦测,估测气音的起始位置和结束位置 可用来预估信号的基频,但很容易出错,所以必须先进行前处理 ...
过零率(Zero Crossing Rate)是在每个音框中,音讯通过零点的次数,具有如下特性: 1.一般而言,杂讯的过零大于气音的过零率,而气音的过零率又大于有声音的过零率 2.通常在断点侦测,估测气音的起始位置和结束位置 3.可用来预估信号的基频,但很容易出错,所以必须先进行前处理 以下显示如何计算过零率 范例1输入:...
(1)过零率(Zero-crossing Rate)指在一个短时帧 内,离散采样信号值由正到负和由负到正的次数, 这个量大概能够反映信号在 … www.docin.com|基于10个网页 2. 越零率 3.4.2越零率(Zero-crossing Rate) 263.4.3差分化参数及差量化参数(Differential Coefficient and Delta Coefficient) 283.4.4 频率-... ...
zerocrossrate(___) Description example rate= zerocrossrate(x)returns the zero-crossing rate ofx. Ifxis a matrix, then the function analyzes each column as a separate channel and returns the zero-crossing rate as a row vector where each value corresponds to a channel. ...
Zero-crossing rateJerome Sueur
1)zero crossing rate过零点率 1.All of the enrolled patients undertook the Biering Sorensen test(BST) and the object-lifting test,a Finland made type ME3000P sEMG instrument was applied to record the electronic activities of paraspinal muscles(convex /concave) of all subjects,and the frequency ...
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The zero-crossing rate of differentiated speckle whose intensity is governed by a negative exponential probability-density function (i.e., fully developed speckle) is evaluated in closed form with the use of an exact expression for the joint probability-density function of the intensity and its fir...
[translate] a河南开封 河南开封[translate] alock ring for. focus 锁环为。 焦点[translate] aMicrosystems, microcontroller, real-time, heart rate monitoring, zero crossing algorithm Microsystems,微型控制器,实时,心率监视,零相交算法[translate]
a利用短时平均过零率可以从背景噪声中找出语音信号,可用于判断寂静无声段和有声段的起点和终点位置 Uses the short-time average zero crossing rate to be possible to discover the pronunciation signal from the background noise, available has the sound section beginning and the end position in judgment ...