Signal Processing Toolbox™

window - Window function gateway

Syntax

window w = window(fhandle,n) w = window(fhandle,n,winopt)

Description

window opens the Window Design and Analysis Tool (wintool).

w = window(fhandle,n) returns the n-point window, specified by its function handle, fhandle, in column vector w. Function handles are window function names preceded by an @.

@barthannwin

@bartlett

@blackman

@blackmanharris

@bohmanwin

@chebwin

@flattopwin

@gausswin

@hamming

@hann

@kaiser

@nuttallwin

@parzenwin

@rectwin

@taylorwin

@triang

@tukeywin

Note For chebwin, kaiser, and tukeywin, you must use include a window parameter using the syntax below.

For more information on each window function and its option(s), refer to its reference page.

w = window(fhandle,n,winopt) returns the window specified by its function handle, fhandle, and its winopt value or sampling flag string. For chebwin, kaiser, and tukeywin, you must enter a winopt value. For the other windows listed below, winopt values are optional.

Window	winopt Description	winopt Value
`blackman`	sampling flag string	`'periodic'`or `'symmetric'`
`chebwin`	sidelobe attenuation relative to mainlobe	numeric
`flattopwin`	sampling flag string	`'periodic'`or `'symmetric'`
`gausswin`	alpha value (reciprocal of standard deviation)	numeric
`hamming`	sampling flag string	`'periodic'`or `'symmetric'`
`hann`	sampling flag string	`'periodic'`or `'symmetric'`
`kaiser`	beta value	numeric
`taylorwin`	1. number of sidelobes 2. maximum sidelobe level in dB relative to mainlobe peak	1. integer greater than or equal to 1 2. negative value
`tukeywin`	ratio of taper to constant sections	numeric

Examples

Create Blackman Harris, Hamming, and Gaussian windows and plot them in the same WVTool.

N = 65;
w = window(@blackmanharris,N);
w1 = window(@hamming,N); 
w2 = window(@gausswin,N,2.5); 
wvtool(w,w1,w2)

Plot comparing Blackman Harris, Hamming, and Gaussian windows of the same length.

window - Window function gateway

Syntax

Description

Examples

See Also

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