MATLAB: Convert wav file from 16 bit to 8 bit

depth bit audio

I read file wav in 16 bit How covert wav to 8 bit depth

Best Answer

Specify the bit per sample option to the audiowrite function. For example

[y, Fs] = audioread('handel.wav');
audiowrite('handle2.wav', y, Fs, 'BitsPerSample', 8);

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MATLAB: What is the maximum sample rate supported by sound()

See the documentation on audiodevinfo.

It depends on your audio card. See for example Windows: How to determine your audio card's, or USB mic's, maximum sampling rate. For a Mac, I suggest a DuckDuckGo search on ‘sound card maximum sampling rate macintosh’ to see how to determine that.

MATLAB: How to Convert .wav file into binary

If you simply want to get a bit-stream representation, it does not matter in any way, if the data are a wav file or a jpeg. A WAV file contains additional header information compared to the pure signal. Getting a bit-stream from it:

fid  = fopen(FileName, 'r');
data = fread(fid, [1, Inf], 'uint8');
fclose(fid);
bit = uint8(rem(floor((1 ./ [128, 64, 32, 16, 8, 4, 2, 1].') * data), 2));
bit = bit(:);

Now you have a bit stream of 1s and 0s stored in an UINT8 vector. This contains the complete data of the file and does not care in any way about the contents or format.

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MATLAB: What is the maximum sample rate supported by sound()

MATLAB: How to Convert .wav file into binary

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