🥁 Slit Drum: Helmholtz Cavity, Lip Bars and Two-Tone Decay (2D)

Cross-section of a hollow log slit drum whose air cavity rings as a Helmholtz resonator while the two lips of the slit ring as wooden cantilever bars. Set the cavity, slit and lip dimensions and see the three tones, the interval between the lips, the decay times and the struck sound as a waveform and spectrum. Cavity resonance, cantilever mode, spectrum lines and scaling laws are checked numerically, with four in-page numerical checks.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install