peteroznewman
Subscriber

Xiaofu,


Engineers who analyze the frequency content of signals in the frequency domain can get away with a minimum sampling rate of 2.5 times the highest frequency in the signal, but that is because they are only interested in frequency analysis.


Engineers who have to work in the time domain, not the frequency domain, must sample at a minimum sampling rate of 20 times the highest frequency in the signal because they have to reconstruct a time domain signal, not just compute frequency data.


If you want to reduce the burden on your computer, simulate for 5 seconds instead of 25 seconds. That will make everything go 5 times faster!


Kind regards,
Peter