Randomize Noise Offset (Blender Add-on)

Graph Editor → N → Modifiers → Randomize Noise Offset
Randomizes the Offset parameter of all NOISE F-Curve modifiers for the active Actions of selected objects.
The offset is defined in seconds (automatically converted to frames using FPS).

Features

• Works on selected objects (or on the active one if none are selected).
• Seed for reproducibility.
• Offset Min/Max (s) — range in seconds, automatically converted to frames.

Requirements

• Blender 4.0+ (tested on 4.5)

Installation

1. Download the release ZIP or create a ZIP from addon/randomize_noise_offset.
2. In Blender: Edit → Preferences → Add-ons → Install... → select the ZIP → Install.
3. Enable the add-on (check the box).
4. Open Graph Editor, press N, go to the Modifiers tab → section Randomize Noise Offset.

Usage

1. Select objects with animation (or keep one active object with an Action).
2. Set Seed, Offset Min/Max (s).
3. Press Randomize Noise Offset — all NOISE modifiers will get a randomized offset.

Why this add-on?

Blender doesn’t provide a built-in operator to batch randomize the Offset of NOISE modifiers.
Without this add-on, the process must be done manually for each curve.

Future ideas

• Option to affect only selected F-Curves in the Graph Editor.
• Toggle to work in frames instead of seconds.
• Filter by Action name or specific curve channels.

Development

• Code: addon/randomize_noise_offset/__init__.py
• Style: PEP8, class prefixes RNO_ / GRAPH_
• Pull requests and issues are welcome!

License

GPL-3.0-or-later (primary license for Blender Extensions)
MIT license also included — see LICENSE.