REAL-TIME DSP SPECTRAL VISUALIZER
Engine: Web Audio API 48kHz
● Right Hand Height = Pitch •
● Left Hand Width = Filter •
● Mouse Drag Plays Notes
Invented by Léon Theremin in 1920, the instrument produces continuous pitch via hand proximity to antennas. Here, spatial vision computes geometric height ($y$-axis) to frequency: $f = f_0 \cdot 2^{k(1-y)}$.
A 24dB/oct Biquad low-pass filter dynamically attenuates higher harmonics as the left hand moves horizontally.