Harmogram, Web Audio API + Canvas (Paper.js) FFT/Harmonograph
Harmogram is an Audio Visual experiment made by Adrian le Bas and powered by the HTML5 Audio API
Harmogram, Web Audio API + Canvas (Paper.js) FFT/Harmonograph launched on December 28, 2012 with 105 votes, #17 of 501 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 13 years on.
In plain words
Harmogram is an audio visual experiment that uses the HTML5 Audio API and Paper.js to create visual representations of sound. It analyzes audio tracks from SoundCloud and generates animated graphics based on frequency data using FFT analysis and harmonograph principles. The tool is designed for developers and audio enthusiasts interested in exploring the intersection of sound and visual art through web technologies.
written from the facts on this page · September 2026
From the sources
Powered by the HTML5 Audio API and Paper.js , with tracks and channels provided by the Soundcloud APIfrom harmogram.com
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