Aliasing) An analog-to-digital converter samples a 20 Hz voltage sigmal at 100 samples/s. a. What is the frequency of the sampled signal? Is it aliased? b. Now suppose a second, 60 Hz signal, caused by line noise, is added to the original signal. To what frequency is this this line noise aliased? c. If the sampling rate is lowered to 50 samples/s, what frequencies are now present in the sampled signal? Power Supply width

Aliasing) An analog-to-digital converter samples a 20 Hz voltage sigmal at 100 samples/s. a. What is the frequency of the sampled signal? Is it aliased? b. Now suppose a second, 60 Hz signal, caused by line noise, is added to the original signal. To what frequency is this this line noise aliased? c. If the sampling rate is lowered to 50 samples/s, what frequencies are now present in the sampled signal? Power Supply width

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter25: Television, Telephone, And Low-voltage Signal Systems

Section25.3: Signal System

Problem 1R

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Question

(Aliasing) An analog-to-digital converter samples a 20 Hz voltage signal at 100
samples/s.
a. What is the frequency of the sampled signal? Is it aliased?
b. Now suppose a second, 60 Hz signal, caused by line noise, is added to the original
signal. To what frequency is this this line noise aliased?
c. If the sampling rate is lowered to 50 samples/s, what frequencies are now
present in the sampled signal?
Power
Supply
-width

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