tukeywin (Signal Processing Toolbox)

Tukey (tapered cosine) window

Syntax

```
w = tukeywin(n,r)
```

Description

w = tukeywin(n,r) returns an n-point, Tukey window in column vector w. Tukey windows are cosine-tapered windows. r is the ratio of taper to constant sections and is between 0 and 1. is a rectwin window and is a hann window. The default value for r is 0.5.

Examples

Compute 128-point Tukey windows with five different tapers and display the results using WVTool:

N=128;
t0=tukeywin(N,0);                 %Equivalent to rectangular window
t25=tukeywin(N,0.25);
t5=tukeywin(N);                   %r=0.5
t75=tukeywin(N,0.75);
t1=tukeywin(N,1);                 %Equivalent to Hann window
wvtool(t0,t25,t5,t75,t1)

Algorithm

The equation for computing the coefficients of a Tukey window is

See Also

chebwin, gausswin, kaiser, window, wintool, wvtool

References

[1] Harris, F. J. "On the Use of Windows for Harmonic Analysis with the Discrete Fourier Transform." Proceedings of the IEEE. Vol. 66 (January 1978). pp. 66-67.

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