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hann

Hann window

Description

Return the filter coefficients of a Hann window of length n.

Usage

hann(n, method = c("symmetric", "periodic"))

hanning(n, method = c("symmetric", "periodic"))

Arguments

n

Window length, specified as a positive integer.
method

Character string. Window sampling method, specified as:

"symmetric"

(Default). Use this option when using windows for filter design.

"periodic"

This option is useful for spectral analysis because it enables a windowed signal to have the perfect periodic extension implicit in the discrete Fourier transform. When "periodic" is specified, the function computes a window of length n + 1 and returns the first n points.

Details

The Hann window is a member of the family of cosine sum windows. It was named after Julius von Hann, and is sometimes referred to as Hanning, presumably due to its linguistic and formulaic similarities to Hamming window.

Value

Hann window, returned as a vector.

Author(s)

Andreas Weingessel, Andreas.Weingessel@ci.tuwien.ac.at.
Conversion to R by Geert van Boxtel G.J.M.vanBoxtel@gmail.com.

Examples

h <- hann(64)
plot (h, type = "l", xlab = "Samples", ylab =" Amplitude")

hs = hann(64,'symmetric')
hp = hann(63,'periodic')
plot (hs, type = "l", xlab = "Samples", ylab =" Amplitude")
lines(hp, col="red")
gsignal

Signal Processing

v0.3-1
GPL-3
Authors
Geert van Boxtel [aut, cre] (Maintainer), Tom Short [aut] (Author of 'signal' package), Paul Kienzle [aut] (Majority of the original sources), Ben Abbott [ctb], Juan Aguado [ctb], Muthiah Annamalai [ctb], Leonardo Araujo [ctb], William Asquith [ctb], David Bateman [ctb], David Billinghurst [ctb], Juan Pablo Carbajal [ctb], André Carezia [ctb], Vincent Cautaerts [ctb], Eric Chassande-Mottin [ctb], Luca Citi [ctb], Dave Cogdell [ctb], Carlo de Falco [ctb], Carne Draug [ctb], Pascal Dupuis [ctb], John W. Eaton [ctb], R.G.H Eschauzier [ctb], Andrew Fitting [ctb], Alan J. Greenberger [ctb], Mike Gross [ctb], Daniel Gunyan [ctb], Kai Habel [ctb], Kurt Hornik [ctb], Jake Janovetz [ctb], Alexander Klein [ctb], Peter V. Lanspeary [ctb], Bill Lash [ctb], Friedrich Leissh [ctb], Laurent S. Mazet [ctb], Mike Miller [ctb], Petr Mikulik [ctb], Paolo Neis [ctb], Georgios Ouzounis [ctb], Sylvain Pelissier [ctb], Francesco Potortì [ctb], Charles Praplan [ctb], Lukas F. Reichlin [ctb], Tony Richardson [ctb], Asbjorn Sabo [ctb], Thomas Sailer [ctb], Rolf Schirmacher [ctb], Rolf Schirmacher [ctb], Ivan Selesnick [ctb], Julius O. Smith III [ctb], Peter L. Soendergaard [ctb], Quentin Spencer [ctb], Doug Stewart [ctb], P. Sudeepam [ctb], Stefan van der Walt [ctb], Andreas Weber [ctb], P. Sudeepam [ctb], Andreas Weingessel [ctb]
Initial release
2021-05-02

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