Copyright	(c) Matthew Donadio 1998
License	GPL
Maintainer	m.p.donadio@ieee.org
Stability	experimental
Portability	portable
Safe Haskell	Safe
Language	Haskell98

DSP.Window

Description

Commonly used window functions. Except for the Parzen window, the results of all of these look right, but I have to check them against either Matlab or my C code.

More windowing functions exist, but I have to dig through my papers to find the equations.

Synopsis

window :: Array Int Double -> Array Int Double -> Array Int Double
rectangular :: Int -> Array Int Double
bartlett :: Int -> Array Int Double
hanning :: Int -> Array Int Double
hamming :: Int -> Array Int Double
blackman :: Int -> Array Int Double
kaiser :: Double -> Int -> Array Int Double
gen_hamming :: Double -> Int -> Array Int Double
parzen :: Int -> Array Int Double

Documentation

window Source #

Arguments

:: Array Int Double	w[n]
-> Array Int Double	x[n]
-> Array Int Double	w[n] * x[n]

Applys a window, w, to a sequence x

rectangular Source #

Arguments

:: Int	M
-> Array Int Double	w[n]

rectangular window

bartlett Source #

Arguments

:: Int	M
-> Array Int Double	w[n]

Bartlett window

hanning Source #

Arguments

:: Int	M
-> Array Int Double	w[n]

Hanning window

hamming Source #

Arguments

:: Int	M
-> Array Int Double	w[n]

Hamming window

blackman Source #

Arguments

:: Int	M
-> Array Int Double	w[n]

Blackman window

kaiser Source #

Arguments

:: Double	beta
-> Int	M
-> Array Int Double	w[n]

rectangular window

gen_hamming Source #

Arguments

:: Double	alpha
-> Int	M
-> Array Int Double	w[n]

Generalized Hamming window

parzen Source #

Arguments

:: Int	M
-> Array Int Double	w[n]

rectangular window