d) What is the frequency of the continuous-time sinusoidal signal that corresponds to the discrete-time signal from part c) (still assuming F = 800 samples/sec) ?
d) What is the frequency of the continuous-time sinusoidal signal that corresponds to the discrete-time signal from part c) (still assuming F = 800 samples/sec) ?
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Chapter1: Introduction
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Please answer part D, thanks!
![Consider the continuous-time signal xa (t) = cos(2π 900 t) which is sampled at
800 samples/sec.
FS
=
a) Find an expression for the resulting discrete-time signal x[n] = xa(nTs), where T,
=
b) Plot the discrete-time samples x[n] for n =
0,..., 24.
FS
c) Find a discrete-time sinusoidal signal y[n] = cos(won), where - ≤w, <T, which yields
the same sample values as x[n] in parts a) and b).
d) What is the frequency of the continuous-time sinusoidal signal that corresponds to the
discrete-time signal from part c) (still assuming FS 800 samples/sec) ?
=](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8b207c38-3ae5-4958-b6f8-8e524b4be30c%2F5df772c9-dea6-41fa-afd3-8c05eee43d8f%2Fadv31ou_processed.png&w=3840&q=75)
Transcribed Image Text:Consider the continuous-time signal xa (t) = cos(2π 900 t) which is sampled at
800 samples/sec.
FS
=
a) Find an expression for the resulting discrete-time signal x[n] = xa(nTs), where T,
=
b) Plot the discrete-time samples x[n] for n =
0,..., 24.
FS
c) Find a discrete-time sinusoidal signal y[n] = cos(won), where - ≤w, <T, which yields
the same sample values as x[n] in parts a) and b).
d) What is the frequency of the continuous-time sinusoidal signal that corresponds to the
discrete-time signal from part c) (still assuming FS 800 samples/sec) ?
=
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