A filter has an impulse response 
What will be an ideal response?
that the response to any signal is always the average of the present value (at time, n) and the previous value (at time, n-1). First, think about a very low frequency sinusoid, say 1 Hz, sampled at 10 Hz. The time between samples is then 1/10 of a period. These two values might cancel occasionally but not every time, so the response would not be zero. But as you increase the frequency, you eventually reach a frequency at which the time between samples is exactly half a period. At that frequency, the present sample and the previous sample are always negatives of each other. If the time between samples is half a period that means a full period is twice the time between samples or 0.2 seconds. That period corresponds to a frequency of 5 Hz.
You might also like to view...
List some of the hazards associated with working outside.
What will be an ideal response?
Poor __________ causes problems, such as undesired interference and distortion, when a strong signal is received
A. RF generator output B. dynamic range C. ambient temperature D. carrier frequency
__________ preventative maintenance includes checking for water in the oil and verifying accumulator charge.
A. Hydraulic system B. Electrical system C. Mechanical system D. Pneumatic system
If an RC integrator uses a 47?F capacitor, a 12 k? resistor and a square wave input with a frequency of 200 kHz, its approximate output is ________
A) a square wave with a frequency of 100 kHz B) a near dc voltage of about half the peak square wave voltage C) a square wave with a frequency of 200 kHz D) 0 V