how can i get a wave file of a particular duration

1 次查看（过去 30 天）

Sony 2013-6-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/78934-how-can-i-get-a-wave-file-of-a-particular-duration

Actually i got a .wave file of some duration but i need a particular portion of that .wave file.i used wavsurfer software but its not working.i need a .wav file ranging from 2.9sec to 3.4sec can anybody pls help me with matlab code??

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Jan 2013-6-13

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/78934-how-can-i-get-a-wave-file-of-a-particular-duration#answer_88673

编辑：Jan 2013-6-16

在 MATLAB Online 中打开

When you know the frequency of the signal, you can specify the wanted part in the inputs:

[y, Fs] = wavread(filename, [N1, N2])

Or the modern version in new Matlab versions:

[y,Fs] = audioread(filename, [N1, N2])

Without knowing the frequency, you can either import the whole signal and cut it afterwards, or obtain the frequency:

info   = audioinfo(filename);
Fs     = info.SampleRate;
Signal = audioread(filename, round([2.9, 3.4] * Fs));  % [EDITED, typo]

4 个评论
显示 2更早的评论隐藏 2更早的评论

Sony 2013-6-14

how to get number of samples per second?

Walter Roberson 2013-6-14

Do you see above where Jan did the wavread() ? The second output, Fs, is the sampling frequency. You can also get it without reading the file by using wavinfo() (older) or audioinfo() (newer)

请先登录，再进行评论。

请先登录，再回答此问题。