oscilloscope playground
A free audio visualization — play it in your browser, no install. 🟢 Vintage oscilloscope simulator with phosphor glow, bloom, and CRT effects. WebGL + GLSL shaders. Music visualizer, waveform lab, vector drawing.
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Open the live demo Source on GitHubFrom the README
A web-based oscilloscope simulator with a physically-inspired multi-pass phosphor rendering pipeline. Simulates the characteristic glow, persistence, and bloom of vintage CRT oscilloscope displays.
Four display modes for live audio: Waveform (time-domain), Spectrum (FFT with log scale), X-Y (stereo oscilloscope), Radial (circular spectrum with beat detection). Auto-gain scales weak signals to fill the screen. Drag-and-drop audio files or use your microphone.
Draw directly on the scope screen. 10 built-in templates (circle, star, heart, spiral, etc.). Catmull-Rom spline smoothing.
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