如何将信号归一化为零均值和单位方差? [英] How to normalize a signal to zero mean and unit variance?

问题描述

我是MATLAB的新手，我正在尝试使用MATLAB构建语音变声系统.

I am new to MATLAB and I am trying to built a voice morphing system using MATLAB.

所以我想知道如何使用MATLAB将信号归一化为零均值和单位方差?

So I would like to know how to normalize a signal to zero mean and unit variance using MATLAB?

推荐答案

如果信号在矩阵X中，则可以通过去除平均值将其设为零值:

if your signal is in the matrix X, you make it zero-mean by removing the average:

X=X-mean(X(:));

和单位方差除以标准差:

and unit variance by dividing by the standard deviation:

X=X/std(X(:));

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