SymWin
Advanced Analysis Library Only
AnalysisLibErrType SymWin (double arrayX[], ssize_t numberOfElements, int windowType, double windowParameter);
Purpose
Applies a symmetric window to a real signal. Symmetric windows are often used in digital filter design, whereas asymmetrical windows are often used in spectrum estimation. For a given window type, the coefficients of an n-point asymmetrical window are the same as the first n coefficients of the (n+1)-point symmetric window, as shown in the following illustration.
Parameters
| Input | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Name | Type | Description | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| numberOfElements | ssize_t | The number of elements in arrayX. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| windowType | int | The type of window to apply. windowType must be one of the following values:
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| windowParameter | double | The window parameter. This parameter is referenced only if windowType is one of the following values:
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| Output | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Name | Type | Description | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| arrayX | double [] | On input, the input signal. On output, this parameter returns the input signal with the selected window applied. |
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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 8.0 and later