synthesizer-0.0.3: Audio signal processing coded in Haskell Source code Contents Index

Synthesizer.Plain.Filter.Recursive.Comb Portability requires multi-parameter type classes Stability provisional Maintainer synthesizer@henning-thielemann.de

Description

Comb filters, useful for emphasis of tones with harmonics and for repeated echos.

Synopsis

karplusStrong :: (C a, C a v) => Parameter a -> T v -> T v run :: C a v => Int -> a -> T v -> T v runMulti :: (C a, C a v) => [Int] -> a -> T v -> T v runProc :: C v => Int -> (T v -> T v) -> T v -> T v

Documentation

karplusStrong :: (C a, C a v) => Parameter a -> T v -> T v Source

The most simple version of the Karplus-Strong algorithm which is suitable to simulate a plucked string. It is similar to the runProc function.

run :: C a v => Int -> a -> T v -> T v Source

Infinitely many equi-delayed exponentially decaying echos. The echos are clipped to the input length. We think it is easier (and simpler to do efficiently) to pad the input with zeros or whatever instead of cutting the result according to the input length.

runMulti :: (C a, C a v) => [Int] -> a -> T v -> T v Source

Echos of different delays.

runProc :: C v => Int -> (T v -> T v) -> T v -> T v Source

Echos can be piped through an arbitrary signal processor.

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