Exact Blackman Window VI

Owning Palette: Windows VIs

Requires: Full Development System

Applies an Exact Blackman window to the input signal 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 Exact Blackman Window (DBL)Exact Blackman Window (CDB)

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Exact Blackman Window (DBL)

	X is a real vector.
	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.

Exact Blackman Window (CDB)

	X is the complex valued input sequence.
	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.

Exact Blackman Window Details

If y represents the output sequence Windowed X, the Exact Blackman Window VI obtains the elements of y from

y_i = x_i[a₀ – a₁cos(w) + a₂cos(2w)]

for i = 0, 1, 2, …, n – 1

,

where n is the number of elements in X,

a₀ = 7938/18608,

a₁ = 9240/18608, and

a₂ = 1430/18608.

Example

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

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