how to use dsp.AudioFileWriter to write 24b bit depth audio?

Normally, I use

audiowrite(fileName,y,Fs,'BitsPerSample',BitsPerSample);

however, for large files, stream audio write is needed and afaik dsp.AudioFileWriter is the only way to write/append audio in chunks to file. 24 bit depth is crucial for me when writing audio, how that can be achieved with dsp.AudioFileWriter?

Answer 1

[Mathieu NOE]

Hi

change DataType properties from int16 (default) to int24

Stream to audio file - MATLAB - MathWorks France

Properties

expand all

Unless otherwise indicated, properties are nontunable, which means you cannot change their values after calling the object. Objects lock when you call them, and the release function unlocks them.

If a property is tunable, you can change its value at any time.

For more information on changing property values, see System Design in MATLAB Using System Objects.

Filename — Name of audio file to which to write

'output.wav' (default) | character vector | string scalar

FileFormat — Audio file format

'WAV' (default) | 'AVI' | 'FLAC' | 'OGG' | 'MPEG4' | 'OPUS' | 'WMA' | 'MP3'

SampleRate — Sampling rate of audio data stream

44100 (default) | positive scalar

Compressor — Algorithm that compresses audio data

'None (uncompressed)' (default) | 'CCITT A-Law' | 'CCITT u-Law' | 'GSM 6.10' | 'IMA ADPCM' | 'Microsoft ADPCM' | 'PCM'

DataType — Data type of the uncompressed audio

'int16' (default) | 'double' | 'single' | 'inherit' | 'int24' | 'int32' | 'uint8'

[Sven Larsen]

Oh my, how could I not see that DataType basically is same thing as audio bit depth. Thank you so much, got it to work!

[Mathieu NOE]

My pleasure !