MATLAB: How to check Number of channels of a sound file and convert stereo file in mono in MATLAB

mononumber of channelsstereo

I want to check whether the .wav file is stereo or mono.If it is stereo, convert in mono using MATLAB.How to proceed

Best Answer

Hemangi - try using audioread as

 myWavFile = 'some.wav';
 [y,Fs] = audioread(myWavFile);

From audioread y output argument, y will be an m-by-n matrix, where m is the number of audio samples read and n is the number of audio channels in the file. So if n is greater than one, then you have multiple channels.

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x2 = x(1:1000,:);      %stereo

MATLAB: Audio file (.wav) being overwritten

You have

speech = ('coch4.wav');
speech2 = speech;

So your speech2 filename is the same as your speech filename.

[y,Fs]=audioread(speech2); %don't use wavread or audioread

So you read from coch4.wav via speech2 filename

audiowrite(speech, speech_trimmed, 44100);

and then you write to the file name given by speech, which is the same as the filename given by speech2, so you are writing to the same file that you read the data from.

Best Answer

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