Notch Notch Manual 0.9.23
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Fractal Noise

Fractal Noise

Generates various fractal noises.



Method #

This node generates fractal noise patterns based on various properties, with multiple noise pattern options available.

This node can be connected to any node which accepts an image input.


These properties control the 3D transforms of the node. Transforms will generally be inherited by child nodes, although they can be ignored through the Inherit Transform Channels attributes.

Position XMove along the local x-axis.
Position YMove along the local y-axis.
Position ZMove along the local z-axis.
Rotation HeadingRotate around the local y-axis.
Rotation PitchRotate around the local x-axis.
Rotation BankRotate around the local z-axis.
Scale XScale along the local x-axis.
Scale YScale along the local y-axis.
Scale ZScale along the local z-axis.

Toggle which transform channels should be inherited from the parent node. By default, all transforms will be inherited.

Position XToggle inheritance of the X Position from the parent.
Position YToggle inheritance of the Y Position from the parent.
Position ZToggle inheritance of the Z Position from the parent.
Rotation HeadingToggle inheritance of the Rotation Heading from the parent.
Rotation PitchToggle inheritance of the Rotation Pitch from the parent.
Rotation BankToggle inheritance of the Rotation Bank from the parent.
Scale XToggle inheritance of the X Scale from the parent.
Scale YToggle inheritance of the Y Scale from the parent.
Scale ZToggle inheritance of the Z Scale from the parent.
World Position OnlyInherit the world position from the parent only, rotation and scale will be ignored. Overrides above properties.
Inherit TimeToggle inheritance of time from the parent.

These properties control the core behaviours of the node.

ActiveEnables or disables the effect. Disabling the effect means it will no longer compute, so disabling a node when not in use can improve performance.
Preview In ViewportPreview the effect blended with alpha in the viewport.
Preview RGB In ViewportPreview the colour values in the viewport.
Preview Alpha In ViewportPreview the alpha values in the viewport.
WidthThe resolution of the effect along its width.
HeightThe resolution of the effect along its height.
Update Time ModeHow the generator updates with relation to the timecode.
  • Locked To Timecode : The generator animations are locked to the timecode and the same time will always yield the same result.
  • Running / Loopable : The generator animations are disconnected from the timecode and will loop seamlessly at the end of the layer.
Static Image (Process Only Once)Only process the image once, making a more efficient scene. Animated Post-FX nodes will not function with this enabled.
Noise TypeSelect the noise function to generate noise from.
  • FBM : Generates cloudy noise using a Fractal Brownian Motion algorithm.
  • Turbulence : Generates bumpy noise using a turbulence noise algorithm.
  • Ridged : Generates curvy looking noise from an inverse of the turbulence noise algorithm.
  • Marble : Uses FBM noise to displce a sine wave pattern, creating a marbled pattern.
  • Ridged 2 : Generates curvy noise similar to Ridged mode, but with thinner lines and a stronger falloff curve.
  • Simplex FBM : Generates a smoother cloud noise using the simplex noise alorithm.
  • Worley F1 : Generates cellular noise using the F1 variant of the worley algorithm.
  • Worley F2-F1 : Generates a patterned noise noise using the F2 variant of the worley algorithm subtracted from the F1.
  • Worley F2+F1 : Generates a layered cellular noise by adding the F1 and F2 variants together.
  • Flow : Generates a liquidy noise by stretching and sqaushing different parts of an FBM generated noise.
  • Warped 1 : Generates an oily noise by randomly displacing a simmpler noise pattern at a low octave value.
  • Warped 2 : Generates an oily noise by randomly displacing warped noises at a medium octave.
  • Warped 3 : Generates an oily noise by randomly displacing warped noises at a high octave.
  • Warped Rotate 1 : Generates an oily noise by randomly stretching and scaling a simpler noise pattern.
AmountChange how strong the brightness of the fractal noise is.
Noise ThresholdMinimum value threshold for where the noise will be generated.
Noise ScaleScale the size of the generated fractal noise.
LacunarityHow large the gaps between larger areas of noise are.
GainThe overall smoothness of the generated fractal noise.
Animation SpeedThe speed at which the fractal noise is animated.
Num OctavesHow many time the noise generation is iterated.

These properties control how the generators are coloured and blended with other images.

ColourChange the colour of the generated image.
Blend AmountThe amount the generator is blended with the output.
Blend ModeChoose how the image blends with the scene. See Blend Modes for details.
  • Solid : The generator is solid, with a filled alpha channel.
  • Blend : The generator RGBA values have matching alpha channels.
  • Pre-Mul Blend : The RGB values are solid white, and the generator colours are stored in the alpha channel alpha. Usually gives the best results for colour blending.


NameDescriptionTypical Input
Colour RampSpecify a range of colours the generator can use through its gradient.Colour Ramp
Transform ModifierApply the transforms of another node to this node.Null
Target NodeModifiy the rotations of the node to always direct the z axis towards the input.Null
Local Transform OverrideApply the transforms of another node to this node, relative to its parent.Null