# BlkmanNuttallWin

Advanced Analysis Library Only

AnalysisLibErrType BlkmanNuttallWin (double arrayX[], int numberOfElements);

## Purpose

Applies a Blackman-Nuttall window to a real signal. The Blackman-Nuttall window is defined as follows:

where N is the number of elements in arrayX. This function applies an unsymmetrical Blackman-Nuttall window to the input signal. If you want to apply a symmetrical Blackman-Nuttall window, call SymWin instead.

## Parameters

Input
Name | Type | Description
numberOfElements | integer | The number of elements in arrayX.
Output
Name | Type | Description
arrayX | double-precision array | On input, the input signal. On output, the output signal with a Blackman-Nuttall 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.