Consider the system of Figure, with the discrete-time system an ideal lowpass filter with cutoff frequency ?/8
Question:
Consider the system of Figure, with the discrete-time system an ideal lowpass filter with cutoff frequency ?/8 radians/s.?
(a) If xc(t) is bandlimited to 5 kHz, what is the maximum value of T that will avoid aliasing in the C/D converter?
(b) If 1/T = 10 kHz, what will the cutoff frequency of the effective continuous-time filter be?
(c) Repeat part (b) for 1/T = 20 kHz.
Transcribed Image Text:
Discrete-time * (n] C/D D/C i v,(1) system yln] () т т
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Related Book For
Discrete Time Signal Processing
ISBN: 978-0137549207
2nd Edition
Authors: Alan V. Oppenheim, Rolan W. Schafer
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