Q1. You are given the spectrum Xa(N) of analog signal xa(t) and spectrum H(w) (between – and ) are given. Sketch and label the Fourier transform of x[n] and of the output ya (t) for each of the following cases. Assume there are no losses at the C/D or D/C blocks. F1 and Fg2 are sampling and reconstruction frequencies, respectively. a. F= Fr2=10+ b. F- F2=2 x 104 ..104 r 104

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Q1.
You are given the spectrum Xa(N) of analog signal xa(t) and spectrum H(w) (between -
and) are given. Sketch and label the Fourier transform of x[n] and of the output ya (t) for
each of the following cases. Assume there are no losses at the C/D or D/C blocks. Fs1 and Fs2
are sampling and reconstruction frequencies, respectively.
a. F= F=10
b. F= Fs2=2 x 104
c. F=2 x 104 F=10*
d. F= 10* F=2 x 104
xa(t)
C/D
x[n]
H(@)
D/C
Ya(t)
Fs1
H(w)
F2
-27 x5 x10
2nx5 x 10
Transcribed Image Text:Q1. You are given the spectrum Xa(N) of analog signal xa(t) and spectrum H(w) (between - and) are given. Sketch and label the Fourier transform of x[n] and of the output ya (t) for each of the following cases. Assume there are no losses at the C/D or D/C blocks. Fs1 and Fs2 are sampling and reconstruction frequencies, respectively. a. F= F=10 b. F= Fs2=2 x 104 c. F=2 x 104 F=10* d. F= 10* F=2 x 104 xa(t) C/D x[n] H(@) D/C Ya(t) Fs1 H(w) F2 -27 x5 x10 2nx5 x 10
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