Sound Reaktor Pro

Yatima in Animation


SOUND REAKTOR PRO 3.0

Sound Reactive animation for Blender.

Released on 2026/10/02
Spectroscope™SR UtilitiesRe-BakeApply to SelectedContrastSoft Normalization

ANIMATE WITH SOUND

Sound Reaktor Pro turns an audio file into animation inside Blender. It analyzes the sound with real signal processing and writes the result into the scene, using keyframes or drivers, in sync with the music.

Six analysis methods read different aspects of the sound: the energy of a frequency band, the beats, the volume, and the character of the sound itself. The result can drive Location, Rotation and Scale, or, through the Custom target, any numeric property in Blender: shader values, Geometry Nodes inputs, lights, cameras, modifiers, constraints and shape keys. Spectral Bins splits the spectrum into nine bands at once, delivered as node groups for Geometry Nodes and the Shader Editor.

The basic workflow is three steps: an audio file, a target, and one click on MAKE IT DANCE! No audio background is needed for a first result, and Easy Mode keeps the panel down to the essentials.

Behind that button sits a complete toolkit: frequency presets, pre-filters, Contrast, smoothing, noise filtering, three normalization modes, configurable FFT size, window function and audio channel. Any setup can be saved as a preset.

SIX ANALYSIS METHODS

FFT
Smooth, flowing motion that follows the energy of a frequency band.
Onset Detection
Sharp, beat-locked hits that land on the transients. Three outputs: Envelope (hit and fade), Triangle (follows the tempo) and Raw Count (a beat counter, for one step per beat).
NEW IN 3.0Triangle and Raw Count.
RMS Energy
Follows the overall volume of the track, with an attack/release envelope for a "breathing", sidechain-style pump.
Spectral Centroid
Follows the brightness of the sound, rising on treble-heavy passages and falling when the sound settles into the bass.
Spectral Flatness
Calm on tonal, melodic passages and active when noise, distortion or cymbals take over.
Spectral Rolloff
Slow, evolving motion that follows how harmonically rich the sound is at each moment.

ANIMATE ANYTHING

Location, Rotation and Scale work per axis, with a base value and a range. Bipolar mode swings both ways around the rest position, and Accumulative rotation keeps spinning, faster on loud passages.

The Custom target reaches any numeric property: material emission, light energy, modifier values, Geometry Nodes inputs, camera focal length... A right-click on the property and Send to Sound Reaktor Pro sets it as the target, with no data paths to copy by hand.

Apply to SelectedNEW IN 3.0

Apply to Selected animates every selected object from a single analysis (Location, Rotation and Scale), each around its own transform. Time Offset delays each object a few frames more than the previous one, ordered by distance from the active object, for waves across a whole selection.

KEYFRAMES OR DRIVERS

Two ways to deliver the animation, which can live side by side in the same .blend.

Keyframes
Keyframes are written straight into the F-curves. They play without the addon installed, render on any machine and export like any other animation.
NEW IN 3.0Keyframe Step writes one keyframe every N frames for lighter files, with Linear, Constant or Bezier interpolation.
Drivers
Drivers read the analysis in real time: scrubbing is immediate and nothing is baked until the result is right. An optional disk cache keeps the analysis between sessions, and Bake to Keyframes freezes the drivers into keyframes when the animation is final.

Spectral Bins analyzes nine frequency bands at once, from Sub Bass to Brilliance, and delivers them as a node group for Geometry Nodes and another for the Shader Editor, one output per band. The bands can also be baked to keyframes, so the result plays without the addon.

Spectroscope over the 3D Viewport

SPECTROSCOPE™

NEW IN 3.0

Unless you use external tools, choosing a frequency band is typically a matter of trial and error. The Spectroscope™ replaces the guesswork with a picture.

It draws the spectrum of the whole track over the 3D Viewport with two curves: Energy, where there is sound, and Movement, where the sound changes. Movement is what Sound Reaktor Pro animates, so the bands that will really move stand out before anything is baked.

The band about to be animated is marked in red, next to the nine presets, and follows the Frequency Range settings live. A pale yellow warning flags bands that would come out flat: bands too narrow for the current FFT resolution, and bands with no sound in them.

Spectroscope
Add › Sound Reaktor menu in Geometry Nodes

SR UTILITIES

NEW IN 3.0

 They are eleven ready-made node groups for the most common audio-reactive tricks, available from Add › Sound Reaktor in the Geometry Nodes editor. Seven of them also work in the Shader Editor, for materials, World and lights.

Envelope and Peak Hold
Turn a jittery band into a clean pulse, or hold a hit and let it fade.
Trigger
An on/off switch with hysteresis and hold, so it does not flicker around the threshold.
Contrast, Range and Bipolar
Reshape, remap or center a signal.
Derivative
Reacts to the moment a sound starts, not to how loud it is.
Accumulator
A running total for rotations and scrolls that speed up with the music, including accumulative rotation in Driver Mode.
Bin Select, Energy and Bin Mix
Pick, combine or blend the nine Spectral Bins bands.

They accept any float as input: a Spectral Bins band, a value baked by Sound Reaktor Pro, or the output of Blender's own Sample Sound Frequencies node.

Shape the Signal

SHAPE THE SIGNAL

Frequency
Nine tuned presets (Sub Bass, Kick, Bass, Snare, Low Mids, Vocals, Presence, Highs and Brilliance) cover the usual suspects, and Custom mode takes exact ranges in Hz.
Pre-filters
High-pass and low-pass filters clean the signal before analysis, removing rumble from treble-focused animation or hiss from bass-focused animation.
Response
Contrast sets the dynamic range of the animation: punchier above 1.0, more fluid below. Smoothing and the Noise Filter remove jitter without flattening real motion.
NEW IN 3.0Contrast and the rebuilt Noise Filter.
Normalization
Per-Band Peak fills the full range on any band, Global keeps the real balance between bands, and Soft keeps loud hits distinct instead of flattening them at the maximum.
NEW IN 3.0Soft.
Analysis
Configurable FFT size and window function, and channel selection for stereo and multichannel files. Analysis Preview shows floor, peak, average and P95 before anything is baked.
Workflow Tools

WORKFLOW TOOLS

Re-BakeNEW IN 3.0
Every bake stores a full snapshot of its settings. When the audio is replaced with a new mix or master, Re-Bake rebuilds the animation with the same settings in one click, and Re-Bake All does it for every animation on the object. Load Settings brings those settings back to the panel for further tweaking.
Presets
A complete setup, audio file included, can be saved under a name, updated, and exported or imported as a .json file to reuse across projects.
NEW IN 3.0Update, Export and Import.
Animation Info
Every animation on the object is listed with its property, method, frequency range and audio file, with buttons to load its settings, re-bake it or delete it.
Send to Sound Reaktor Pro
A right-click on any numeric property makes it the Custom target.

SOUND REAKTOR PRO VS BLENDER'S SOUND NODE

Blender 5.2 includes the Sample Sound Frequencies node for Geometry Nodes. It returns the raw amplitude of a frequency range, live inside the node graph and with no dependencies, and it is a good introduction to sound-driven effects.

Sound Reaktor Pro covers the rest of the workflow: six analysis methods, post-processing, animation of any property outside Geometry Nodes, keyframes that play without the addon, and support from Blender 4.2. The two also work together: SR Utilities accept the native node's output.

The table below compares both.

Sound Reaktor Pro 3.0 vs Blender's native Sound Node comparison table

SOUND REAKTOR PRO 3.0 UPDATE (2026/10/02)

The biggest Sound Reaktor Pro update so far.

See before baking.
The new Spectroscope™ draws the spectrum of the track over the viewport, shows where the sound moves, marks the band about to be animated, and warns when a band would come out flat.
Shape the motion.
Contrast replaces Sensitivity: higher values give punchier motion, lower values more fluid motion. The new Soft normalization keeps heavy bass from flattening at the maximum, and Onset gains two new outputs: a tempo-following Triangle and a Raw Count beat counter.
Work faster.
Apply to Selected animates a whole selection from one analysis, with Time Offset for waves. Re-Bake rebuilds any animation after the audio changes. Presets can be updated, exported and imported, and Keyframe Step writes lighter .blend files.
Build in nodes.
SR Utilities adds eleven node groups (Envelope, Trigger, Range, Accumulator and more) to the Geometry Nodes and Shader editors, including accumulative rotation in Driver Mode.
Plus a long list of fixes:
audio and animation stay in sync at 23.976, 24 and 29.97 fps, Bake to Keyframes is much faster, motion blur with drivers is smooth, and the Custom target no longer runs data paths as code. More than 40 performance and bug fixes alone in this release.

Upgrading from 2.x: presets and baked animations convert automatically from Sensitivity to Contrast. Animations already baked are never modified. Re-analyzing an older project can give a different result, because several analysis fixes change the numbers.

COMPATIBILITY & SUPPORT

Supports Blender 4.2 to 5.2, tested on Blender 5.2 LTS. Windows (x64), macOS (Apple Silicon) and Linux (x64). Dependencies are bundled with the extension, with no separate installation step.

Full documentation, video tutorials, and direct contact with the developer at blenderartists.org or [email protected].

TECHNICAL SPECIFICATIONS
Version3.0
Blender4.2 to 5.2
Python3.11 and 3.13
PlatformsWindows (x64), Linux (x64), macOS (Apple Silicon)
LicenseGPL-3.0

Professional audio analysis for Blender.


  • The full experience.

    $25
$25

Have questions about this product?
Login to message

Details
Blender Extension Compatible Yes
Sales 60+
Rating
6 ratings
Dev Fund Contributor
Published 9 months ago
Blender Version 4.2 - 5.2
Extension Type Add-on
Render Engine Used Cycles, Eevee
License GPL