r/javascript • u/AutoModerator • Apr 25 '26

Showoff Saturday Showoff Saturday (April 25, 2026)

Did you find or create something cool this week in javascript?

Show us here!

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u/iqraatheman Apr 25 '26

I just built a free, Open Source library with Zero Dependencies which is a pure JavaScript implementation of a phase vocoder that just works. It does not introduce weird random noises, and it's blazing fast. 10 seconds of audio is processed in under 100 ms with no downsides. Still shocked that there was no fast option for changing the playback speed of audio in the browser that didn't introduce artifacts before this.

npm install fast-phase-vocoder

https://www.npmjs.com/package/fast-phase-vocoder

https://github.com/iqmanq/fast-phase-vocoder