Creating a modified audiofile

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!

[Yazan]

Do you need to concatenate a 2-second audio file to have a 2-min file? If yes? Then what's the challenge in that? Just concatenate the data. Am I missing something?

[Youssef Darwich]

i have a 2-sec. audio-file of a word speech. I want to make an audio file of a repeating sequence of this speech for 2 minutes. for example: if a have the word speech "MATLAB" on an audio file, i want to create an audio-file which goes for 2 min. by repeating the word "MATLAB". "MATLAB MATLAB MATLAB MATLAB..." for 2 min.

hopfully it is now clear and you can help, :)

[Jonas]

have a look into the audioread, audiowrite and repmat function

[Youssef Darwich]

thanks, this was helpful

Answer 1

[Yazan]

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);

[Youssef Darwich]

this was helpful, thanks a lot!