Creating a modified audiofile

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Youssef Darwich 2021-7-30

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https://ww2.mathworks.cn/matlabcentral/answers/889137-creating-a-modified-audiofile

评论： Youssef Darwich 2021-8-6

Hi,

i have a 2 seconds audiofile. How can i create a 2 min. one from the same data. in other words in need to create a loop of the same data in the original 2 sec. file which goes for 2 min.

i appreciate every help, thanks!

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Jonas 2021-8-1

编辑：Jonas 2021-8-1

have a look into the audioread, audiowrite and repmat function

Youssef Darwich 2021-8-6

thanks, this was helpful

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采纳的回答

Yazan 2021-8-1

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https://ww2.mathworks.cn/matlabcentral/answers/889137-creating-a-modified-audiofile#answer_758407

在 MATLAB Online 中打开

clc, clear
% load data
load handel.mat
filename = 'handel.wav';
audiowrite(filename, y, Fs);
% save only 2 second of audio
y = y(1:2*Fs);
% extend the audio from 2 sec to 2 minutes
rep = round(2*60/2);
yrep = repmat(y, [rep, 1]);
% write the extended audio
audiowrite(filename, yrep, Fs);
% read the extended audio
[y, Fs] = audioread('handel.wav');
% listen to extended audio
sound(y, Fs);