Every shape has natural vibration modes — the eigenvectors of its Laplacian, its manifold harmonics. It's the math behind Mark Kac's famous 1966 question, “Can one hear the shape of a drum?”
This takes the harmonics of live audio (an FFT) and drives each mode of the mesh with its matching frequency band. The mesh literally resonates to the music — eigen-solved and rendered in real time, in your browser.
The mesh's Laplacian eigenmodes (its natural vibration modes) driven live by the harmonics of the audio.