UnknownFouriers
A free audio processing demo — play it in your browser, no install. A real-time Web Audio Fourier Transform Ridgeline Visualizer inspired by Joy Division's Unknown Pleasures pulsar cover. Features 3D terrain perspective, custom multi-stop gradients, continuous frequency slicing, QWERTY/MIDI synth, YouTube player, and 100% client-side privacy.
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Open the live demo Source on GitHubFrom the README
A real-time Web Audio Fourier Transform Ridgeline Visualizer & Spectral Decomposition Engine inspired by Peter Saville's iconic 1979 album cover for Joy Division's Unknown Pleasures (transposing signal pulse data recorded from Pulsar CP 1919).
UNKNOWN FREQUENCIES bridges the gap between mid-20th-century radio astrophysics, iconic post-punk minimalism, and high-performance Web Audio engineering.
In July 1967, astrophysicist Jocelyn Bell Burnell discovered the first radio pulsar (CP 1919 / PSR B1919+21) at the Mullard Radio Astronomy Observatory.
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