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Owning Palette: Feature Extraction VIs
Requires: Advanced Signal Processing Toolkit
Computes the group delay of a signal from the spectrogram of the signal.
|spectrogram specifies the quadratic time-frequency representation of a signal. Use the Time Frequency Spectrogram VIs to compute the spectrogram of the signal.|
|scale info specifies the time scale information and the frequency scale information of the time-frequency representation.|
|error in describes error conditions that occur before this node runs. This input provides standard error in functionality.|
|group delay returns the time delay of the signal at each frequency bin. |
|error out contains error information. This output provides standard error out functionality.|
The following equation defines the group delay:
where is the spectrogram of the signal. The spectrogram can result from any Time Frequency Spectrogram VI.
Refer to the Group Delay VI in the labview\examples\Time Frequency Analysis\TFAFunctions directory for an example of using the TFA Group Delay VI.