LabWindows/CVI

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CxChebWin

Advanced Analysis Library Only

AnalysisLibErrType CxChebWin (NIComplexNumber arrayX[], ssize_t numberOfElements, double ratio);

Purpose

Applies an unsymmetrical Dolph-Chebyshev window to a complex signal. If y represents the output sequence arrayX, CxChebWin obtains the elements of y using the following equation:

where n is the number of elements in arrayX, s is the height ratio of the mainlobe to the sidelobe in dB, and the m-th order Chebyshev polynomial is




If you want to apply a symmetrical Dolph-Chebyshev window, call SymWin instead.

This function performs the window operation in place; that is, the windowed data replaces the input data.

Parameters

Input
Name Type Description
numberOfElements ssize_t The number of elements in arrayX.
ratio double The height ratio of the mainlobe to the sidelobe in dB. If ratio < 0, the function uses 0 for ratio instead.
Output
Name Type Description
arrayX NIComplexNumber [] On input, the input signal.

On output, this parameter returns the input signal with a Dolph-Chebyshev window applied.

Return Value

Name Type Description
status AnalysisLibErrType A value that specifies the type of error that occurred. Refer to analysis.h for definitions of these constants.

Additional Information

Library: Advanced Analysis Library

Include file: analysis.h

LabWindows/CVI compatibility: LabWindows/CVI 2012 and later

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