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
@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
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)
  
  
  

See Also

barthannwin, bartlett, blackman, blackmanharris, bohmanwin, chebwin, flattopwin, gausswin, hamming, hann, kaiser, nuttallwin, parzenwin, rectwin, triang, tukeywin

vco

wintool

© 1994-2005 The MathWorks, Inc.