Houdini Audio Reactive Rig Houdini Audio Reactive Rig (CHOP-less) A lightweight, drop-in audio→motion rig for Houdini that doesn’t rely on CHOPs. It analyzes a WAV file inside a single Python SOP and outputs one point per frequency band with a clean @amp attribute you can use to drive anything—scale, color, instancing, shaders, camera… you name it. What it does - Per-band analysis using the Goertzel algorithm (fast, FFT-free). - Log-spaced bands from Freq Min → Freq Max (musically natural). - At

Houdini Harmonies: Creating Audio-Reactive 3D Art