音频信号的重叠窗口数 [英] Number of overlaping windows for an audio signal

问题描述

我有一个长度为n的音频信号，我想将其划分为长度为k的窗口，且交叠r ＜. k.从音频信号中可以获得多少个窗口?

我认为是

  n/(k-r) - r

但是我现在看到这是错误的.

解决方案

如果您有m个长度为k且重叠r的窗口，则总距离跨度n为

n = (k-r)m + r

因此，窗口数m为

m = (n-r)/(k-r)

I have an audio signal, of length n and I want to divide it into windows of length k, with an overlap r < k. What is the number of windows I will obtain, from my audio signal?

I calculated it to be

  n/(k-r) - r

but I now see that it is wrong.

解决方案

If you have m windows of length k with an overlap of r, then the total distance span, n, is given as

n = (k-r)m + r

Hence the number of windows, m, is

m = (n-r)/(k-r)

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