by Tommaso Malaisi·Audio
Images © Tommaso Malaisi. Used for product review; image policy.
A2B earns its place in the superhive library for a specific approach: feeding live audio straight into Geometry Nodes as real-time data, with no drivers, keyframes, or baking. It suits artists who want to experiment with sound-driven visuals in the viewport rather than produce rendered output.
A2B 5.1 (Audio2Blender) converts live audio into data you can use directly inside Blender's Geometry Nodes. It writes audio into a Geometry Nodes attribute, where a2b[0] holds volume and a2b[1..N] hold FFT bands, accessed via Sample Index. There are no drivers, no keyframes, and no baking involved — only real-time data.
You can take real-time audio input from a microphone, system sound, or external sources, and configure FFT bands such as 8, 16, or 32 across a custom frequency range of 20 Hz to 20 kHz. This lets you control parameters like volume, bass, mids, and highs, and build audio-reactive systems including particles, meshes, and simulations directly in the 3D viewport.
Version 5.1 adds a multichannel system for multiple inputs, experimental analysis of pitch in Hz and BPM, improved stability and responsiveness, and an architecture aimed at complex setups. A2B is real-time only and runs in the viewport; it does not render or bake. On Windows, ASIO is recommended with WASAPI as a fallback, while macOS uses Core Audio out of the box.
A2B 5.1 Multichannel Rt Audio For Blender Gn is best for audio-reactive visuals, music visualizers, procedural animation, game and interactive installations, and live setups built inside Blender's Geometry Nodes.
A2B 5.1 Multichannel Rt Audio For Blender Gn is completely free to download and use.
A2B 5.1 is listed for Blender version 5.1 and is marked as Blender Extension compatible, installed as an add-on. It's built specifically for Geometry Nodes, writing live audio into a Geometry Nodes attribute that you access via Sample Index. The listing notes Cycles as the render engine used, though A2B itself runs in the viewport in real time rather than through rendering. For the current list of supported versions, check the developer's page.
A2B is real-time only and works in the 3D viewport. It does not render and it does not bake — the audio data lives in Geometry Nodes as it plays, with no drivers, keyframes, or baking step. This design targets live interaction and experimentation, so it fits building and previewing audio-reactive systems such as particles, meshes, and simulations directly in the viewport rather than producing a final rendered file.
A2B takes real-time audio input from a microphone, system sound, or external sources. On Windows, ASIO is recommended for best performance, with WASAPI available as a fallback. On macOS, Core Audio works out of the box. From there you can configure FFT bands such as 8, 16, or 32 and set a custom frequency range from 20 Hz to 20 kHz to shape the data feeding your Geometry Nodes setup.
A2B is listed as free here in our catalog. The plugin is distributed under a GPL license and is marked as a Dev Fund contributor on its store page. Licensing terms can change, so for the most current details on pricing and usage rights, check the developer's page directly. Keep in mind that A2B is built for real-time, viewport-based interaction and does not include rendering or baking, which is worth factoring into how you plan to use it.
by example.sk
Audvis - Audio Visualization is a Blender add-on for building audio visualizations. It includes a Real Time Analyzer for animations reacting to sound, a Sequence Analyzer for music videos, plus baking and spectrogram tools.
by F1dg3t
MAD (Microphone Audio Driver) is a Blender add-on that turns live microphone input into an animation driver. Point it at bone rotations, shape key values, or custom properties and they respond to sound in real time.
by Jan-Hendrik-Müller
Motion Sounds is a Blender add-on that inserts sound effects into the Video Sequence Editor based on bone motion events. It detects when armature bones cross a set Z threshold and places clips at those frames.
by Dinesh007
Audio Exporter is a Blender add-on for the Video Sequence Editor that exports audio strips as separate files or a single combined file, with control over codecs, sample rates, bit rates, and channel layouts.
by qsOwOsp
Timeline Audio Visualizer is a Blender add-on that draws audio waveform overlays directly inside animation editors — the Dope Sheet, Graph Editor, and NLA Editor — so animators can time actions, lip sync, beats, and cuts without switching editors.
by nifi
Sound Planes is a Blender add-on that uses planes to detect motion in user-specified areas of a scene, automatically adding sounds to the sequencer when a plane is intersected.
