window

Window function gateway

Syntax

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

Description

window opens the Window Designer app.

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 include a window parameter using the next syntax.

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 descriptor. For chebwin, kaiser, and tukeywin, you must enter a winopt value. For the other windows listed in the following table, winopt values are optional.

Window	`winopt` Description	`winopt` Value
`blackman`	window sampling	`'periodic'` or `'symmetric'`
`chebwin`	sidelobe attenuation relative to mainlobe	numeric
`flattopwin`	window sampling	`'periodic'` or `'symmetric'`
`gausswin`	alpha value (reciprocal of standard deviation)	numeric
`hamming`	window sampling	`'periodic'` or `'symmetric'`
`hann`	window sampling	`'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

collapse all

Blackman-Harris, Hamming, and Gaussian Windows

Open Live Script

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)

$Figure Window Visualization Tool contains 2 axes objects and other objects of type uimenu, uitoolbar, uipanel. Axes object 1 with title Time domain, xlabel Samples, ylabel Amplitude contains 3 objects of type line. Axes object 2 with title Frequency domain, xlabel Normalized Frequency (\times\pi rad/sample), ylabel Magnitude (dB) contains 3 objects of type line.$