Chebyshev Window VI

Owning Palette: Windows VIs

Requires: Full Development System

Applies an asymmetrical Dolph-Chebyshev window to the input sequence X. Wire data to the X input to determine the polymorphic instance to use or manually select the instance.

Details  Example

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

Select an instance Chebyshev Window (DBL)Chebyshev Window (CDB)

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Chebyshev Window (DBL)

	X is a real vector.
	lobe ratio (dB) is the ratio of the mainlobe to the sidelobe in dB. The default is 60.
	Windowed X is the input signal with the window applied.
	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.

Chebyshev Window (CDB)

	X is the complex valued input sequence.
	lobe ratio (dB) is the ratio of the mainlobe to the sidelobe in dB. The default is 60.
	Windowed X is the input signal with the window applied.
	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.

Chebyshev Window Details

If y represents the output sequence Windowed X, the Chebyshev Window VI obtains the elements of y using the following equation:

for i = 0, 1, … , n–1

where n is the number of elements in X,

s is the height ratio of the mainlobe to the sidelobe in dB,

is the m-th order Chebyshev polynomial,

.

Example

Refer to the Window Comparison VI in the labview\examples\Signal Processing\Windows directory for an example of using the Chebyshev Window VI.

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