Filter
Top Products
NI-DSP Analysis VI Reference Chapter 2
Part 3: NI-DSP Function Reference 2-36 NI-DSP SRM for LabVIEW for Windows
DSP General Cosine Window
Applies a general cosine window to the input
sequence X. If A represents the Cosine
Coefficients input sequence and Y represents
the output sequence GenCos{X}, the elements
of Y are obtained using the formula:
y
i
= x
i
∑
k=0
m-1
(-1)
k
a
k
cos (kw)
for i = 0, 1, 2, … , n-1
w =
2πi
n
,
where n is the number of elements in X, and
m is the number of elements in Cosine Coefficients.
X is a DSP Handle Cluster that indicates the memory buffer on the DSP board that contains the input
signal array.
Note: The operation is performed in place and the input array X is overwritten by the output
GenCos {X}.
Cosine Coefficients is a DSP Handle Cluster that indicates the memory buffer on the DSP board that
contains the cosine coefficients.
GenCos {X} is a DSP Handle Cluster that is identical to X, but with the results of GenCos {X} already
stored in the memory buffer on the DSP board.
error in (no error) contains the error information from a previous VI. If an error occurs, it is passed out
error out and no other calls are made.
error out contains the error information for this call.