Question: Consider a discrete - time lowpass filter with cutoff frequency fc = 5 kHz and sampling rate fs = 2 0 kHz . The ideal

Consider a discrete-time lowpass filter with cutoff frequency fc=5kHz and sampling rate fs=20kHz. The ideal impulse response of this filter is
h[n]=2Fc*sinc(2pi*n*Fc).
Apply an N=9 rectangular window to this impulse response. What is the minimum delay required to make this system causal? The answer is a nonnegative integer.
Consider a discrete - time lowpass filter with

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