Transfer and coherence function with Labview.

Please send me a Labview code with transfer function (gain vs frequency) and coherence function of 2 signals: stimulus signal (1024 pts) and response signal (1024 pts). Thanks.

The Frequency Response Function (Mag-Phase).vi VI located in the Analyze>>Waveform Measurements palette returns the Coherence function. The attached example (LabVIEW 6.1) VI shows how it work (using a digital filter as unit-under-test).
Note that the coherence is always equal to 1.0 (by definition) if you are not averaging.
Attachments:
Transfer_Function_and_Coherence.vi ‏78 KB

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