Frequency Response vs. Phase Shift

[JEJ1234]

I want to create a frequency response (signal amplitude vs. frequency) and see the simulated phase shift. How do I do that?

[Bob_Schor]

Can you program reasonably well in LabVIEW?  Do you know about Structures (items in the Structures Palette), Arrays, Clusters, Timing functions, Numeric functions, String functions?  Do you know how (and why) to write sub-VI?  Are you aware of the importance of the Error Line and do you use it?  Do you document your VIs?

If the answers to most of these is "yes", then do you understand how to analyze Time Series (sometimes called Signal Theory, taught in most Engineering curricula)?

Again, if the answer is "yes", then write some code, test it (by generating a signal with known properties and seeing how your code changes it), and if it doesn't work, come back, attach your code, and ask for help.

If the answers to the above questions is "no", then you need to do a little "learning".  For LabVIEW, there are some links at the beginning of the Forum.  

Bob Schor

[paul_cardinale]

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@JEJ1234 wrote:

I want to create a frequency response (signal amplitude vs. frequency) and see the simulated phase shift. How do I do that?

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I don't know what "simulated phase shift" is, but the FFT function outputs a complex array that can be converted to polar giving you amplitude and phase vs frequency.

[JEJ1234]

A simulated phase shift is a phase shift curve simulated from looking at a simulated frequency response spectrum, such as with Xsim software. That software simulates a frequency response curve and phase shift curve after you create a speaker crossover circuit using inductors and capacitors with the idea of having a crossover at one or more desired frequencies. For example, a two-way, third-order Butterworth. I cannot program LabView so I guess I cannot get what I want here. Thanks for your responses though.