Continuous Spectrogram from multiple wav files.

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Hello all,
I have been scouring the existing online help but cant seem to find exactly what I’m after. I have a folder with hundreds of 4 min wav files and want to produce a single spectrogram which contains them all. My initial thinking was to read in all wav files and somehow join them into one large file to later put into a spectrogram. Any help would be great appreciated!
Thanks,
Thomas

Accepted Answer

Stijn Haenen
Stijn Haenen on 19 May 2020
Something like this:
data_tot=[];
>> for i=1:numel(files)
data=audioread(files(i));
data_tot=[data_tot ; data];
end
audiowrite('file.wav',data_tot,Fs);
  3 Comments
Stijn Haenen
Stijn Haenen on 19 May 2020
Edited: Stijn Haenen on 19 May 2020
you have to make colomns from your data, you can add some lines to do this:
data_tot=[];
>> for i=1:numel(files)
data=audioread(files(i));
if size(data,1)<2
data=data';
end
data_tot=[data_tot ; data];
end
audiowrite('file.wav',data_tot,Fs);
and you have to check whether all your files are single audio files or double (left and right audio).
Thomas Webber
Thomas Webber on 19 May 2020
Thats wonderful, thankyou for your help!

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