Window Properties VI

Owning Palette: Windows VIs

Requires: Full Development System

Computes the coherent gain and equivalent noise bandwidth of a window. You must manually select the polymorphic instance you want to use.

Details  

Use the pull-down menu to select an instance of this VI.

Select an instance Window Properties by CoefWindow Properties by Name

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Window Properties by Coef

	Window Coefficients specifies the window coefficients.
	eq noise BW returns the equivalent noise bandwidth of the window defined by Window Coefficients.
	coherent gain returns the coherent gain of the window defined by Window Coefficients.
	error returns any error or warning from the VI. You can wire error to the Error Cluster From Error Code VI to convert the error code or warning into an error cluster.

Window Properties by Name

	size specifies the window size. size must be greater than 0.
	window specifies the window type for calculating the properties.
	window parameter is the beta parameter for a Kaiser window, the standard deviation for a Gaussian window, and the ratio, s, of the main lobe to the side lobe for a Dolph-Chebyshev window. If window is any other window, this VI ignores this input. The default value of window parameter is NaN, which sets beta to 0 for a Kaiser window, the standard deviation to 0.2 for a Gaussian window, and s to 60 for a Dolph-Chebyshev window.
	eq noise BW returns the equivalent noise bandwidth of the window defined by window.
	coherent gain returns the coherent gain of the window defined by window.
	error returns any error or warning from the VI. You can wire error to the Error Cluster From Error Code VI to convert the error code or warning into an error cluster.

Window Properties Details

The coherent gain (CG) and equivalent noise bandwidth (ENBW) of a given window are defined as follows:

where w_i are the window coefficients and n is the number of coefficients.