https://github.com/shamazmazum/wavelet-audio

Audio compressor which uses (4,2) CDF wavelet
https://github.com/shamazmazum/wavelet-audio

audio codec wavelet

Last synced: 5 months ago
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Audio compressor which uses (4,2) CDF wavelet

• Host: GitHub
• URL: https://github.com/shamazmazum/wavelet-audio
• Owner: shamazmazum
• License: bsd-2-clause
• Created: 2018-10-20T08:42:16.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2025-05-21T14:34:18.000Z (about 1 year ago)
• Last Synced: 2025-05-21T14:35:57.244Z (about 1 year ago)
• Topics: audio, codec, wavelet
• Language: Common Lisp
• Homepage:
• Size: 651 KB
• Stars: 8
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
Wavelet-audio

-------------

![CI](https://github.com/shamazmazum/wavelet-audio/workflows/CI/badge.svg)

This package is a proof of concept of wavelet transform-based lossless

audio codec. **wavelet-audio** uses  (4,2) B-spline wavelet and Rice

entropy coding to compress audio. Compression speed is slow,

decompression speed is much faster.

Compression ratio is 25-50% and is comparable to ratio of flac codec.

Examples:

========

~~~~~~~~{lisp}

(wavelet-audio:encode-wavelet-audio "~/file.wav" "~/file.wa")

(wavelet-audio:decode-wavelet-audio "~/file.wa" "~/file.wav")

~~~~~~~~

Documentation:

=============

Visit [the project page](http://shamazmazum.github.io/wavelet-audio)

on github pages.