synthesizer-0.2.0.1: Audio signal processing coded in HaskellSource codeContentsIndex
Synthesizer.Generic.Analysis
Contents
Notions of volume
Miscellaneous
Synopsis
volumeMaximum :: (C y, Read sig y) => sig y -> y
volumeEuclidean :: (C y, Read sig y) => sig y -> y
volumeEuclideanSqr :: (C y, Read sig y) => sig y -> y
volumeSum :: (C y, C y, Read sig y) => sig y -> y
volumeVectorMaximum :: (C y yv, Ord y, Read sig yv) => sig yv -> y
volumeVectorEuclidean :: (C y, C y yv, Read sig yv) => sig yv -> y
volumeVectorEuclideanSqr :: (C y, Sqr y yv, Read sig yv) => sig yv -> y
volumeVectorSum :: (C y yv, C y, Read sig yv) => sig yv -> y
bounds :: (Ord y, Read sig y) => sig y -> (y, y)
directCurrentOffset :: (C y, Read sig y) => sig y -> y
scalarProduct :: (C y, Read sig y) => sig y -> sig y -> y
centroid :: (C y, Read sig y) => sig y -> y
average :: (C y, Read sig y) => sig y -> y
rectify :: (C y, Transform sig y) => sig y -> sig y
zeros :: (Ord y, C y, Transform sig y Bool) => sig y -> sig Bool
flipFlopHysteresis :: (Ord y, Transform sig y Bool) => (y, y) -> Bool -> sig y -> sig Bool
Notions of volume
volumeMaximum :: (C y, Read sig y) => sig y -> ySource
Volume based on Manhattan norm.
volumeEuclidean :: (C y, Read sig y) => sig y -> ySource
Volume based on Energy norm.
volumeEuclideanSqr :: (C y, Read sig y) => sig y -> ySource
volumeSum :: (C y, C y, Read sig y) => sig y -> ySource
Volume based on Sum norm.
volumeVectorMaximum :: (C y yv, Ord y, Read sig yv) => sig yv -> ySource
Volume based on Manhattan norm.
volumeVectorEuclidean :: (C y, C y yv, Read sig yv) => sig yv -> ySource
Volume based on Energy norm.
volumeVectorEuclideanSqr :: (C y, Sqr y yv, Read sig yv) => sig yv -> ySource
volumeVectorSum :: (C y yv, C y, Read sig yv) => sig yv -> ySource
Volume based on Sum norm.
bounds :: (Ord y, Read sig y) => sig y -> (y, y)Source
Compute minimum and maximum value of the stream the efficient way. Input list must be non-empty and finite.
Miscellaneous
directCurrentOffset :: (C y, Read sig y) => sig y -> ySource
Requires finite length. This is identical to the arithmetic mean.
scalarProduct :: (C y, Read sig y) => sig y -> sig y -> ySource
centroid :: (C y, Read sig y) => sig y -> ySource
directCurrentOffset must be non-zero.
average :: (C y, Read sig y) => sig y -> ySource
rectify :: (C y, Transform sig y) => sig y -> sig ySource
zeros :: (Ord y, C y, Transform sig y Bool) => sig y -> sig BoolSource

Detects zeros (sign changes) in a signal. This can be used as a simple measure of the portion of high frequencies or noise in the signal. It ca be used as voiced/unvoiced detector in a vocoder.

zeros x !! n is True if and only if (x !! n >= 0) /= (x !! (n+1) >= 0). The result will be one value shorter than the input.

flipFlopHysteresis :: (Ord y, Transform sig y Bool) => (y, y) -> Bool -> sig y -> sig BoolSource
Detect thresholds with a hysteresis.
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