https://github.com/superauguste/dct-zig

Discrete Cosine Transform coeff calculation in Zig!
https://github.com/superauguste/dct-zig

Last synced: 11 months ago
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Discrete Cosine Transform coeff calculation in Zig!

• Host: GitHub
• URL: https://github.com/superauguste/dct-zig
• Owner: SuperAuguste
• License: mit
• Created: 2022-03-06T23:56:22.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2022-03-11T12:11:13.000Z (over 4 years ago)
• Last Synced: 2025-07-21T22:30:42.308Z (11 months ago)
• Language: Zig
• Size: 8.79 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# dct-zig

Calculate those coefficients 😎😎

Simply get yourself a headerless signed 8-bit PCM file (Audacity can export to that format 😇), rename it to `dct.raw` (I didn't include a default `dct.raw` because the one I have on-hand is copyrighted and also 200kbs), put it in your current working directory (here), and `zig build run`!

The program will return a list of DCT coefficients! Then, head to [this convenient Desmos graph I created](https://www.desmos.com/calculator/fy1irskdfx) and paste the coefficients into the brackets of the `K = [ ]` line and you should see a snazzy audio signature. You can change the amplitude scale by changing that `100` at the bottom!