Differential-PCM

Simplistic DPCM compression algorithm, with parabolic difference mapping

Supported file types

• only .wav files

Supported wave files

• supports 8 and 16 bit sample widths (although, don't expect higher quality from 16 bit, as it's treated as 8 bit)
• supports multi-track audio
• supports only signed audio samples

Usage

• py3.12 main.py -h to get help
• -i / --input - input .wav file or .dpcm compressed file
• -o / --output - output .wav file or .dpcm compressed file
• --mode - mode of operation
  • encode_wav - encodes .wav to .dpcm
  • decode_wav - decodes .dpcm to .wav
  • squezee - encodes and then decodes .wav file. Used for quality preview
• --dpcm-depth - compression bit depth, 1 makes worst quality at 1/8th file size, 4 makes "best" quality at 1/2 file size