MATLAB: I was record on the phone a sound. how to hear that sound in matlab.

phone soundreal time

Hello, I need help. I was record on my phone a sound. I want to hear that sound in matlab. How to do that?

I already tried with load and audioread and so on. Than I tried that sound convert in .wav and he still does not recognize that file. When I put for example load pcela.wav % pcela.wav is my name of that recorded sound Error using load Unknown text on line number 1 of ASCII file pcela.wav "RIFF’_".

Am I doing something wrong? Please help me I don't have no idea anymore and I cant find anything similar on web.

Thanks.

Best Answer

I found a matlab script (with exe and library) that can import m4a files. I tried it and it seems to work. See www.ee.columbia.edu.

Related Solutions

MATLAB: How to audiowrite a soundfile from m4a to wav

Laura - I think that you want to use audioread first as

 m4AFilename = 'hoi.m4a';
 [y,Fs] = audioread(m4AFilename);

and then write it as a wav file using audiowrite as

 wavFilename = 'hoi.wav';
 audio write(wavFilename,y,Fs);

Try the above and see what happens!

MATLAB: Do I hear nothing? sound function

According to the documentation, the sound data (first input to sound()) is an mx1 or mx2 matrix. Your sound data are 1x2001. Sound data typically contains values between [-1,1]. The range of your sound data is [0,2].

Valid sampling rates (second input to sound()), are 1000-384000Hz, accepted by Matlab, but also depend on your hardware. In reality, 1000Hz is very low for standard hardware. My Realtek audio supports a 44.1k/48k/96k/192kHz sample rate. To see info on your audio card in Windows, run dxdiag (win + r), and look at the Sound tab.

If you run your audio without specifying the sampling rate or specifying a much higher rate such as 44100, you should hear two clicks.

sound(x'-1, 44100)

transposed to conform to the expected inputs (a column vector)
-1 to conform to the typical range of audio data

More info on playing sounds in matlab.

Best Answer

Related Solutions

MATLAB: How to audiowrite a soundfile from m4a to wav

MATLAB: Do I hear nothing? sound function

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