MATLAB *.pcm to *.wav converting

Question

How can I convert *.pcm audio file to *.wav audio File in MATLAB-Code? I just need to insert a header, but how it is work? Thank you very much!

Answer 1

Since you didn't specify it, I'm assuming you are using Matlab 2018b, so I will point you to the most recent documentation about audioread :

As you can see, PCM is not on the supported format list .

You should try to look if you can parameter your AudioRecorder to record your audio to another format within the ones in the supported list: .wav, .ogg, .flac, .au, .aif, .aifc, mp3, .mp4...

---

An alternative option, without using audioread , would be to import pcm data like any other data file, then convert it to 16 bit wav. I assume sample rate is 44100 Hz.

fid = fopen('audioFile.pcm');                 % Open raw pcm file
audio = int16(fread(fid, Inf, 'int16'));      % Convert data into 16 bit
fclose(fid);                                  % Close pcm file
audiowrite('audioFile.wav', audio, 44100,'BitsPerSample', 16); % Write wav