audio spectral node graph
A free audio visualizer — play it in your browser, no install. An audio visualizer that shows sound as a node graph.
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A browser-based audio visualizer built with p5.js and Web Audio. Load your audio, press Play, and drag to rotate. Audio is processed locally.
$$ C = \frac{\sum_k f_k A_k}{\sum_k A_k}, \qquad S = \sqrt{\frac{\sum_k (f_k-C)^2 A_k}{\sum_k A_k}} $$
$C$ is the spectral centroid (mean frequency); $S$ is the spectral spread. Their recent ranges set node position; the balance between low and high frequencies sets depth. Centroid sets color, relative RMS level sets size, and spectral changes create pulses. Connections link nearby moments. Recent nodes are white; older ones fade.
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