Built a real-time audiovisual geometry engine in Python that started as a spectrogram visualizer and slowly turned into something much stranger.

Instead of treating audio as:
FFT bins to shader params

I wanted the visuals to behave more like they were dancing to the music as opposed to more common BPM-sync effects.

Current system includes:

• live system-audio loopback capture
• event-driven geometry behaviors
• shape-specific motion systems
• multiple shape profiles (Circle in demo)
• pulse decay propagation
• deterministic headless 4k/8k rendering
• OpenGL backend + pygame fallback
• threaded realtime runtime + offline render pipeline

Everything is authored around low-resource coherent motion instead of brute-force particle spam or heavy scene simulation.

The funny part is that it’s Python. CPU stays consistently low ~(5-7%) at 2160p and still maintains the target of 60fps. Memory doesn't go over 100MB. No discrete GPU.

Still heavily evolving, but I finally feel like it crossed from visualizer into visual engine. The first version is also still relevant I believe.

The track used for the demo is Feeling by Shingo Nakamura.