🎤 A2B 5.1 — Multichannel, Real-Time Audio → Geometry Nodes

Turn sound into motion. In real time.

https://www.youtube.com/watch?v=rbpHeKPZQ8E

A2B (Audio2Blender) converts live audio into data you can use directly inside Geometry Nodes.
No baking. No delays. Just real-time control.

⚡ What you can do

• Drive animations with live audio

• Use FFT bands in Geometry Nodes

• Control parameters (volume, bass, mids, highs)

• Build audio-reactive systems (particles, meshes, simulations)

• Create real-time visuals in the 3D viewport

🧠 How it works

A2B writes audio into a Geometry Nodes attribute:

• a2b[0] → Volume

• a2b[1..N] → FFT bands

Access via Sample Index.
👉 No drivers · No keyframes · No baking — only real-time data

🚀 What’s new in 5.1

• 🎛️ Multichannel system (multiple inputs)

• 🧪 Experimental analysis: pitch (Hz), BPM, more coming

• ⚡ Improved stability and responsiveness

• 🧩 Better architecture for complex setups

🎛️ Features

• Real-time audio input (mic, system, external)

• Configurable FFT bands (8, 16, 32…)

• Custom frequency range (20 Hz – 20 kHz)

• Multi-channel workflows

• Optimized for viewport playback

• Built for Geometry Nodes

🧪 Use cases

Audio-reactive visuals · Music visualizers · Procedural animation · Game and Interactive installations · Live setups

⚠️ Important

A2B is real-time only (viewport)
❌ No rendering
❌ No baking
✔️ Designed for live interaction and experimentation

🖥️ Audio drivers

• Windows: ASIO recommended (best performance), WASAPI as fallback

• macOS: Core Audio → works great out of the box

❤️ Made for creators