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Owning Palette: Signal Processing VIs

Use the Signal Operation VIs to manipulate signals and return a signal output. Example

The VIs on this palette can return general LabVIEW error codes or specific signal processing error codes.

Palette Object	Description
AC & DC Estimator	Estimates the AC and DC levels of the input Signal.
AutoCorrelation	Computes the autocorrelation of the input sequence X. The data type you wire to the X input determines the polymorphic instance to use.
Convolution and Correlation	Performs convolution, deconvolution, or correlation on the input signals.
Convolution	Computes the convolution of the input sequences X and Y. The data type you wire to the X input determines the polymorphic instance to use.
CrossCorrelation	Computes the cross correlation of the input sequences X and Y. The data type you wire to the X input determines the polymorphic instance to use.
Decimate (continuous)	Continuously decimates the input sequence X by the decimating factor and the averaging Boolean control. The data type you wire to the X input determines the polymorphic instance to use.
Decimate (single shot)	Decimates the input sequence X by the decimating factor and the averaging Boolean control. The data type you wire to the X input determines the polymorphic instance to use.
Deconvolution	Computes the deconvolution of the input sequences X * Y and Y.
Normalize	Normalizes the input vector or matrix using its statistical profile (µ,s), where µ is the mean and s is the standard deviation, to obtain a Normalized Vector or Normalized Matrix whose statistical profile is (0,1).
Peak Detector	Finds the location, amplitude, and second derivative of peaks or valleys in the input signal.
Quick Scale	Determines the maximum absolute value of the input X and then scales X using this value.
Rational Resample	Resamples the input signal X by interpolating X, passing the interpolated signal through an FIR filter, and decimating the filtered signal. The data type you wire to the X input determines the polymorphic instance to use.
Resample (constant to constant)	Resamples input signal X according to delay and dt using an FIR filter implementation. The data type you wire to the X input determines the polymorphic instance to use.
Resample (constant to variable)	Resamples input signal X according to Time using an FIR filter implementation. The data type you wire to the X input determines the polymorphic instance to use.
Riffle	Riffles the elements in the input array X. The data type you wire to the X input determines the polymorphic instance to use.
Scale	Removes the offset of an input signal X and then scales the result so that the output sequence is in the range [–1:1].
Scaling and Mapping	Changes the amplitude of a signal by scaling or mapping the signal.
Threshold Peak Detector	Analyzes the input sequence X for valid peaks and keeps a count of the number of peaks encountered and a record of Indices, which locates the points that exceed the threshold in a valid peak.
Unit Vector	Finds the norm of the Input Vector and obtains its corresponding Unit Vector by normalizing the original Input Vector with its norm.
Unwrap Phase	Unwraps the Phase array by eliminating discontinuities whose absolute values exceed pi.
Upsample	Inserts zeros in input sequence X by upsampling factor. The data type you wire to the X input determines the polymorphic instance to use.
Y[i]=Clip{X[i]}	Clips the elements of Input Array to within the bounds specified by upper limit and lower limit.
Y[i]=X[i-n]	Shifts the elements in the Input Array by the specified number of shifts: n.
Zero Padder	Resizes the input sequence Input Array to the next higher valid power of 2, sets the new trailing elements of the sequence to zero, and leaves the first n elements unchanged, where n is the number of samples in the input sequence. The data type you wire to the Input Array input determines the polymorphic instance to use.

Example

Refer to the labview\examples\analysis\peakxmpl.llb for examples of using the Signal Operation VIs.