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Chapter 42
Window VIs
Window VI Descriptions
The following Window VIs are available.
Blackman Window
Applies a Blackman window to the input sequence X.
If y represents the output sequence Blackman{X}, the VI obtains the elements
of y from
yi = xi [0.42 – 0.50 cos(w) + 0.08 cos(2w)] for i = 0, 1, 2, …, n – 1,
2πi
w = -------- ,
n
where n is the number of elements in X.
Blackman-Harris Window
Applies a three-term, Blackman-Harris window to the input sequence X.
If y represents the output sequence Blackman-Harris{X}, the VI obtains the elements
of y from
yi = xi [0.42323 – 0.49755 cos(w) + 0.07922 cos(2w)]
for i = 0, 1, 2, …, n – 1
2πi
w = -------- ,
n
where n is the number of elements in X.
LabVIEW Function and VI Reference Manual
42-2
© National Instruments Corporation
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