Kaiser window
Return the filter coefficients of a kaiser window of length n.
kaiser(n, beta = 0.5)
n |
Window length, specified as a positive integer. |
beta |
Shape factor, specified as a positive real scalar. The parameter
|
The Kaiser, or Kaiser-Bessel, window is a simple approximation of the DPSS window using Bessel functions, discovered by James Kaiser.
besselI(0, Beta * sqrt(1-(2*x/m)^2))
k(x) = -------------------------------------, -m/2 <= x <= m/2
besselO(0, Beta)The variable parameter β determines the trade-off between main lobe width and side lobe levels of the spectral leakage pattern. Increasing β widens the main lobe and decreases the amplitude of the side lobes (i.e., increases the attenuation).
Kaiser window, returned as a vector.
Kurt Hornik, Kurt.Hornik@ci.tuwien.ac.at,
Paul Kienzle,
pkienzle@users.sf.net.
Conversion to R by Geert van Boxtel
G.J.M.vanBoxtel@gmail.com.
k <- kaiser(200, 2.5) plot (k, type = "l", xlab = "Samples", ylab =" Amplitude")
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