Category Archives: VFX World

Houdini Noise types

“Anti-Aliased Noise (of type perlin, simplex, cell, etc) with or without Turbulence (a loop to add successively finer amounts of the same noise for roughness) is noise that generally goes from -1 to 1.

Turbulence Noise is generally Anti-Aliased Noise that is folded over (absolute value of anti-aliased noise) and generally goes from 0 to 1. It looks billowy or pillowy.

Curl Noise is non-divergent meaning that the noise has no “sinks” or “sources” and gives you a fluid-like motion when applied to particles velocity by itself won’t impart any directionality which explains what you are seeing.”

info from odforce forum

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