Audio Color Ramp node: controls, inputs and a free patch

Audio Color Ramp

Splits incoming audio into up to 8 frequency bands and maps each one to a color — Intensity mode glows a stop brighter with its band's energy, Expansion widens it, and Spectrum paints a continuous FFT sweep across the palette. Patch an image in and it grades that image through the audio-reactive gradient instead of outputting the gradient alone.

What it does

Audio Color Ramp is a compositing node: it layers, masks and routes pictures. It takes picture and audio in and gives picture out.

Try it

Leave the image input empty and use it as a standalone audio-reactive gradient background.

Audio MasterAudio Color Ramp Output

Inputs and outputs

Inputs

picture img
audio audio

Outputs

picture out

Controls

Every control with a range can be driven by a modulator, a note, an audio level or a sketch.

Control	Range or options	Default
mode	Intensity Glow, Band Expansion, Continuous Spectrum	0
interpolation	Linear, Constant, Smooth	0
bands	2 to 8	4
gain	0.1 to 10	1
min glow	0 to 1	0.150000006

Example patch

This patch wires Audio Color Ramp to what it needs and shows the result. Download it, then use File, Open in Infinite, or read it here: it is plain text.

infinite-patch 1
rev 2
# Audio Color Ramp: a starting patch for the Audio Color Ramp node
node 1 Compositing Audio Color Ramp
  id node
  pos 520 300
end
node 2 Source Ramp
  id in0
  pos 0 220
end
node 3 Synths Oscillator
  id in1
  pos 0 510
end
node 4 Utility Output
  id out
  pos 1080 300
end
cable node 0 in0
aud node 1 in1
cable out 0 node