The discussion revolves around the concept of aliasing in signal processing, specifically how different frequencies appear when sampled at a specific rate. Participants explore the implications of sampling a 1 Hz signal at a sampling interval of 0.2 seconds, and they seek to identify other frequencies that would also appear as 1 Hz due to aliasing effects.
Participants express varying interpretations of the sampling scenario, and while there is some agreement on the implications of the Nyquist theorem, the specific frequencies that would alias to 1 Hz remain unresolved.
Participants have not fully clarified the assumptions regarding the sampling method, and the discussion does not resolve the specific frequencies that would appear as 1 Hz under the given sampling conditions.
Do you mean 0.2s duration of sampling (with a given sampling frequency), or do you mean one sample every 0.2s (5Hz sampling frequency)?kakolukia786 said:Hi. I have been given a plot for 1 Hz, sampled at 0.2 sec. And, 4 Hz and 11 Hz has also been plotted. So, from the plot, I can see that its really hard to distinguish between the signals after digitalization. My question is how do I find the next higher frequency which, when sampled at 0.2 secs, will look like a 1 Hz wave ?
kakolukia786 said:I mean one sample every 0.2 seconds