This phenomenon occurs when the sampling rate is less than the Nyquist rate. For 10 points each:
[10m] Name this phenomenon in which signals in a sample are indistinguishable, leading to temporal artifacts like the stroboscopic effect and the wagon-wheel effect.
ANSWER: aliasing [accept temporal aliasing; reject “anti-aliasing”]
[10e] The Nyquist–Shannon sampling theorem gives that the Nyquist rate is twice the greatest value of this quantity present in a signal. This quantity can be measured in hertz.
ANSWER: frequency [prompt on f or nu]
[10h] When sampling below Nyquist rate, aliasing can be mitigated by the application of these filters that attenuate frequencies in a signal that are greater than a given cutoff. Simple moving averages act as these filters and finite impulse response filters.
ANSWER: low-pass filters [or high-cut filters or treble-cut filters]
<David Bass, Science - Engineering and Miscellaneous> ~21309~ <Editor: David Bass>