Sampling Rate, Nyquist Frequency, and Aliasing
By Billiard Television Editor • Feb 25th, 2019 • Category: Billiard TipsFree Billiard Video – http://video_demos.colostate.edu
Demonstration of sampling rate, aliasing, Nyquist frequency, and amplitude fidelity.
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I don’t know of any magic number here. The answer depends on what type of amplitude fidelity you are looking for.
when you go above the nyquist freq. , you encounter amplitude modulation right? how much higher do you have to go? could you be more specific than just “well above the nyquist” to avoid that modulation? like, is it an integer multiple of the the signal being sampled?
You’re welcome!
Good point.
The point of the video is to show what happens if you don’t do this.
This just proves you don’t understand the theory. You have to have a filter on the output if you want to avoid aliases above the Nyquist frequency distorting the output. Only then will inputs near the nyquist frequency pass though the system undistorted. Just how near you can go to the Nyquist frequency depends on how good your filter is.
very interessting!
You’re welcome.
Dr. Dave
thankyou for post