Sinusoidal Signals Exercises
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Question 1 of 15
1. Question
Frequency is proportional to fundamental period.
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Question 2 of 15
2. Question
Continuoustime sinusoids with distinct frequencies are
.
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Question 3 of 15
3. Question
Discretetime sinusoids with distinct frequencies are .
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Question 4 of 15
4. Question
Discretetime frequency is measured in units of .
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Question 5 of 15
5. Question
A complex sinusoid has real part given by a .
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Question 6 of 15
6. Question
Find the fundamental frequency of the signal depicted below.
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Question 7 of 15
7. Question
Select the two following discretetime sinusoids that are identical.
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Question 8 of 15
8. Question
A continuoustime sinusoid is sampled to produce a discretetime sinusoid . Find the frequency in rads of the discretetime sinusoid for rads/sec, secs.
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Question 9 of 15
9. Question
The fundamental frequency of a trumpet note is Hz.
Find the fundamental frequency in units of rads/sec if Hz.
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Question 10 of 15
10. Question
The fundamental frequency of a trumpet note is Hz.
You sample at an interval sec to obtain . What is the fundamental frequency of if Hz.
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Question 11 of 15
11. Question
Find the fundamental period of .
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Question 12 of 15
12. Question
Find the fundamental period of .
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Question 13 of 15
13. Question
Find the fundamental period of .
Hint: if a signal has fundamental period , then it also is periodic with period where .
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Question 14 of 15
14. Question
The sound file SaxA.wav contains a brief recording of an alto saxophone playing the musical note A. Listen to the sound. A 22.65 ms section of this note is depicted below.
SaxA.wav
Use the graph to find the fundamental frequency of this note in Hz. Hint: measure the time for multiple periods and divide by the number of periods.
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Question 15 of 15
15. Question
Problem statements in pdf file here. Note there are some differences from the quiz questions to map them onto the quiz tool.
MATLAB code SaxAapprox.m and MATLAB file SaxA_note.mat for extra question in pdf file.
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