Modulation Analysis for Automotive NVH application

This submission is on Modulation Analysis for Automotive NVH application.
A simulated pulse spike signal is generated in this example,and windowed FFT is performed on the time signal.
Finally,we can get the modulation frequency vs carrier frequency,and thus the period of the pulse signal can be obtained.

The readers can refer to the enclosed paper for a more detailed description.
Markus Bodden, Ralf Heinrichs
"ANALYSIS OF THE TIME STRUCTURE OF GEAR RATTLE"
The author would like to thank Thomas.Lewien, the president of Discom GmbH, who also specilizes in NVH analysis and inspired this work.