ADSP UNIT 2

ADSP UNIT 2

University

8 Qs

quiz-placeholder

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ADSP UNIT 2

ADSP UNIT 2

Assessment

Quiz

Engineering

University

Practice Problem

Hard

Created by

Sindhu T S

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8 questions

Show all answers

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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