Time Frequency Transform VIs

LabVIEW 2014 Advanced Signal Processing Toolkit Help

Edition Date: June 2014

Part Number: 372656C-01

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Owning Palette: Time Frequency Analysis VIs

Requires: Advanced Signal Processing Toolkit. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.

Use the Time Frequency Transform VIs to decompose signals as linear combinations of elementary functions. The elementary functions are localized in time and frequency. You also can reconstruct the signal from the elementary functions.

The VIs on this palette can return general LabVIEW error codes or specific Time Frequency Analysis error codes.

Palette ObjectDescription
Dual WindowComputes the dual windows for the Gabor transform and the Gabor expansion.
TFA Adaptive ExpansionReconstructs a signal from the Gaussian chirplet elementary functions. Wire data to the signal input to determine the polymorphic instance to use or manually select the instance.
TFA Adaptive TransformDecomposes signal as a linear combination of Gaussian chirplet elementary functions. Wire data to the signal input to determine the polymorphic instance to use or manually select the instance.
TFA Discrete Gabor ExpansionReconstructs time-domain signals from the Gabor elementary functions. Wire data to the signal output to determine the polymorphic instance to use or manually select the instance.
TFA Discrete Gabor TransformDecomposes signal as a linear combination of Gabor elementary functions, which are complex sinusoids with a window envelope. You can use the TFA Discrete Gabor Expansion VI to reconstruct the time-domain signal. Wire data to the signal input to determine the polymorphic instance to use or manually select the instance.
TFA Dual WindowComputes the dual windows for the Gabor transform and the Gabor expansion.
TFA STFTComputes the short-time Fourier transform (STFT) of signal. Wire data to the signal input to determine the polymorphic instance to use or manually select the instance.
TFA Time Varying FilterPerforms time-varying filtering on a signal. Wire data to the signal input to determine the polymorphic instance to use or manually select the instance.
Time Varying Filter (Thresholding)Uses the thresholding method to perform time-varying filtering in the joint time-frequency domain.

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