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Chapter 2 NI-DSP Analysis VI Reference
NI-DSP SRM for LabVIEW for Windows 2-31 Part 3: NI-DSP Function Reference
DSP Exponential Window
Applies an exponential window to the input
sequence X. If Y represents the output
sequence Exponential{X}, the elements of
Y are obtained using the formula:
y
i
= x
i
exp(a * i)
for i = 0, 1, 2, … , n-1,
a =
ln |f|
n - 1
,
where f is the final value, and
n is the number of elements in X.
You can use the Exponential Window VI to analyze transients.
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
Exponential {X}.
final value defaults to 0.10.
Exponential {X} is a DSP Handle Cluster that is identical to X, but with the results of Exponential {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.