CxCosTaperedWin
Advanced Analysis Library Only
AnalysisLibErrType CxCosTaperedWin (NIComplexNumber arrayX[], ssize_t numberOfElements, double ratio);
Purpose
Applies a cosine tapered window to a complex signal. If y represents the output sequence arrayX, CxCosTaperedWin obtains the elements of y using the following equation:
where n is the number of elements in arrayX, 
, and r is the ratio of the total length of the tapered section to the whole signal length as shown in the following figure:
\n\n
If r ≤ 0, the window is equivalent to a rectangular window. If r ≥ 1, the window is equivalent to a Hanning window.
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 ratio of the total length of the tapered section to the whole signal length. The window is a cosine tapered window only if 0 < ratio < 1. If ratio <=0, the window is equivalent to a rectangular window. If ratio >=1, the window is equivalent to a Hanning window. |
| Output | ||
| Name | Type | Description |
| arrayX | NIComplexNumber [] | On input, the input signal. On output, this parameter turns the input signal with a cosine tapered 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