How to change bitpersample of audio ?

Hi everyone

Is it possible to change the audio bitpersample outside the range of 16 (default) | 8 | 24 | 32 | 64 with flac or wav codec format?

If possible how to do it?

For example : within the range 10, 12, 14, etc

Answer 1

[Rahul]

Hi Sisi,

In order to sample your audio with non-standard bit ranges like 10, 12, 14 you can consider to quantize the audio data to the desired bit depth. Here is a sample code:

% Considering 'audioData' and 'sampleRate' as the variables with signal data and it's sampling rate

desiredBits = 12; % Can be adjusted

% Calculating 'quantizedAudio' by 'maxIntValue' according to the 'desiredBits' 
maxIntValue = 2^(desiredBits - 1) - 1;
quantizedAudio = round(audioData * maxIntValue) / maxIntValue;

% Writing the 'quantizedaudio' as a .wav file
audiowrite('output.wav', quantizedAudio, sampleRate);

You can also refer to this MATLAB Answer, which mentions the use of 'quantiz' and 'discretize' functions:

https://mathworks.com/matlabcentral/answers/631559-how-to-quantize-the-audio-file

Hope this helps! Thanks.