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Transforms VIs

LabVIEW 2013 Help

Edition Date: June 2013

Part Number: 371361K-01

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Owning Palette: Signal Processing VIs

Requires: Full Development System. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.

Use the Transforms VIs to implement common transforms used in signal processing. The LabVIEW FFT-based VIs use different output units and scale factors.

Example

The VIs on this palette can return signal processing error codes.

Palette ObjectDescription
Chirp Z TransformComputes the Chirp-Z transform of the input sequence X. Wire data to the X input to determine the polymorphic instance to use or manually select the instance.
DCTComputes the Discrete Cosine Transform (DCT) of the input sequence X. Wire data to the X input to determine the polymorphic instance to use or manually select the instance.
DSTComputes the Discrete Sine Transform (DST) of the input sequence X. Wire data to the X input to determine the polymorphic instance to use or manually select the instance.
Fast Hilbert TransformComputes the fast Hilbert transform of the input sequence X.
FFTComputes the fast Fourier transform (FFT) of the input sequence X. Wire data to the X input to determine the polymorphic instance to use or manually select the instance.
FHTComputes the fast Hartley transform (FHT) of the input sequence X.
Inverse Chirp Z TransformComputes the inverse Chirp-Z transform of the input sequence Chirp-Z {X}.
Inverse DCTComputes the inverse Discrete Cosine Transform (DCT) of the input sequence DCT {X}. Wire data to the DCT {X} input to determine the polymorphic instance to use or manually select the instance.

Inverse DSTComputes the inverse Discrete Sine Transform (DST) of the input sequence DST {X}. Wire data to the DST {X} input to determine the polymorphic instance to use or manually select the instance.

Inverse Fast Hilbert TransformComputes the inverse fast Hilbert transform of the input sequence X using Fourier identities.
Inverse FFTComputes the inverse discrete Fourier transform (IDFT) of the input sequence FFT {X}. You must manually select the polymorphic instance you want to use.
Inverse FHTComputes the inverse fast Hartley transform of the input sequence X.
Laplace Transform RealComputes the real Laplace transform of the input sequence X.
Walsh HadamardComputes the real Walsh Hadamard transform of the input sequence X.
Walsh Hadamard InverseComputes the inverse of the real Walsh Hadamard transform of the input sequence X.
Wavelet Transform Daubechies4Computes the wavelet transform based on the Daubechies4 function of the input sequence X.
Wavelet Transform Daubechies4 InverseComputes the inverse of the wavelet transform based on the Daubechies4 function of the input sequence X.

Example

Refer to the Transforms.lvproj in the labview\examples\Signal Processing\Transforms directory for an example of using the Transforms VIs.


 

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