
ADSP UNIT 2
Quiz
•
Engineering
•
University
•
Practice Problem
•
Hard
Sindhu T S
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A stationary random process is one in which:
Mean and variance change with time
Autocorrelation depends only on the time difference
Power spectrum is not defined
None of the above
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The autocorrelation function R_x(τ) of a wide-sense stationary (WSS) process is always:
Odd and real
Even and real
Complex and odd
None of the above
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The power spectral density (PSD) of a random process is the:
Laplace transform of the autocorrelation
Fourier transform of the autocorrelation
Z-transform of the autocorrelation
Cosine transform of the autocorrelation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The AR(1) process is defined as:
x[n]=a1 x[n−1]+w[n]
x[n]=b0 w[n]+w[n−1]
x[n]=a1 x[n−1]+b1 w[n]
None of the above
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The MA(q) process can be generated by:
Passing white noise through an all-pole filter
Passing white noise through an all-zero filter
Adding a deterministic signal to white noise
Differencing a stationary process
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The ARMA(p,q) model combines:
Autoregressive process only
Moving average process only
Both AR(p) and MA(q) processes
Neither
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The autocorrelation function of a pure MA process is:
Infinite in length
Finite in length
Always zero
None of the above
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