Synthesizer.Plain.Displacement

http://en.wikipedia.org/wiki/Particle_displacement

Mixing

mix :: C v => T v -> T v -> T v

Mix two signals. In opposition to zipWith the result has the length of the longer signal.

mixMulti :: C v => [T v] -> T v

Mix an arbitrary number of signals.

raise :: C v => v -> T v -> T v

Add a number to all of the signal values. This is useful for adjusting the center of a modulation.

Distortion

distort :: (c -> a -> a) -> T c -> T a -> T a

In Synthesizer.Basic.Distortion you find a collection of appropriate distortion functions.