CS2108 T3
Authored by Ivan Wong
Computers
University
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When interpreting a discretized signal in the frequency domain:
Softness matters
We cannot know the frequency step without knowing the sampling frequency
We choose instead to convert to time domain because it makes more sense
The values must be real numbers
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
frequency step = sampling frequency / N. What's N?
Fundamental period
Index of the time step
Length of the vector
Newtons
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If our time domain signal is symmetrical, then:
Our frequency domain signal is continuous
Our sound lacks any sine components
Our frequency domain signal is asymmetrical
Our frequency domain signal is periodic
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of this is least relevant to convolution?
ifft
Multiply and sum
Flip the impulse response
fftshift
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true about MATLAB?
MATLAB's conv performs linear convolution
MATLAB's conv performs circular convolution
Doing conv on 2 length 5 vectors gives a length 5 result
Doing conv on different length vectors will throw an error
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