Signal Processing Basics
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- Homework 7
- Plot the Cross Correlation of the 2 channels from Homework 6 and see if the peak is shifted from the middle, the number of samples you measured from the previous step.
- Hints:
- Functions -> Express -> Signal Analysis -> Conv & Corr -> Cross Correlation
- This function requires that you extract the 2 channels from the DDT. To do this, use Functions -> Express -> Sig Manip -> From DDT -> Single Waveform -> Channel 0 and then again for Channel 1. Connect the outputs of these to the X and Y inputs.
- Before you plot the Cross Correlation, extract the 1D array of scalars using the From DDT so that the X-Axis is in samples.
- Look at the help on the Cross Correlation for details.
- Hints:
- Plot the Spectrogram of Channel 0.
- Hint: There is a good Spectrogram example that ships with LabVIEW. Go to Help -> Find Examples... and search for STFT -> STFT Spectrogram Demo.vi. You can copy from this example and paste it into your code.
- Plot the Cross Correlation of the 2 channels from Homework 6 and see if the peak is shifted from the middle, the number of samples you measured from the previous step.
- Homework 7
- Tutorial
- Homework 8- Finish task from tutorial.