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MCQ Questions for CBSE Class 12 with Answers
MCQ Questions for CBSE Class 11 with Answers
MCQ Questions for CBSE Class 10 with Answers
MCQ Questions for CBSE Class 9 with Answers
MCQ Questions for CBSE Class 8 with Answers
MCQ Questions for CBSE Class 7 with Answers
MCQ Questions for CBSE Class 6 with Answers
MCQ Questions for CBSE Class 5 with Answers
MCQ Questions for CBSE Class 4 with Answers
MCQ Questions for CBSE Class 3 with Answers
MCQ Questions for CBSE Class 2 with Answers
MCQ Questions for CBSE Class 1 with Answers
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Digital Signal Processing Gate & PSU MCQ Questions With Answers
1.
When audio editing is complete, which of the following formats would be the best choice for export?
.PNG
.MP3
.AVI
All of above
2.
Any unwanted signal interfering with the main signal is
System
Noise
Frequency
None
3.
Which type of signal is represented by discrete values?
Nois signal
Non linear
Analog
Digital
4.
DTFT is the representation of
Periodic Discrete time signals
Aperiodic Discrete time signals
Aperiodic continuous signals
Periodic continuous signals
5.
As compared to the analog systems, the digital processing of signals allow1) Programmable operations2) Flexibility in the system design3) Cheaper systems4) More reliability
1, 2 and 3 are correct
1 and 2 are correct
1, 2 and 4 are correct
All the four are correct
6.
How many complex multiplications are need to be performed to calculate chirp z-transform?(M=N+L-1)
log2M
Mlog2M
(M-1)log2M
Mlog2(M-1)
7.
Kim is placing background music under her voiceover in an advertisement. What editing technique should she use to remove part of the music at the end of the recording?
Fading
Looping
Trimming
All of above
8.
Reverb time (RT 60) is the amount of time it takes for a reverberated signal to reach -60db below the direct sound level.
True
False
9.
If X1(k) and X2(k) are the N-point DFTs of X1(n) and x2(n) respectively, then what is the N-point DFT of x(n)=ax1(n)+bx2(n)?
X1(ak)+X2(bk)
aX1(k)+bX2(k)
eakX1(k)+ebkX2(k)
None of the mentioned
10.
Why is it important to understand how a mixing console works when recording audio?
You will need to use one to record voiceovers
You will need to use one to record instruments
It is the basis for the interface in audio editing software
All of above
11.
The condition for a system to be causal is
All poles of its transfer function must be left half of s-plane
All poles of its transfer function must be right half of s-plane
All zeros of its transfer function must be right half of s-plane
All zeros of its transfer function must be left half of s-plane
12.
Eunice is maintaining the audio levels while her musician is recording a song. What phase of production is Eunice in?
Post-Production
Pre-Production
Production
Final-Production
13.
Telegraph signals are examples of
Digital signals
Analog signals
Impulse signals
Pulse train
14.
When recording audio, how are the channels used?
One channel records all the instruments and one records microphones
Each channel records a separate audio input
Only one channel can be recorded at a time
All of above
15.
What is the configuration of system for digital processing of an analog signal?
Analog signal->Pre-filter ->D/A Converter -> Digital Processor -> A/D Converter -> Post-filter
Analog signal-> Pre-filter ->A/D Converter -> Digital Processor -> D/A Converter -> Post-filter
Analog signal-> Post-filter ->D/A Converter -> Digital Processor -> A/D Converter -> Pre-filter
None of the above
16.
Which of the following is not related to dynamic level processing?
flanger
limiter
gate
expander
17.
Which of the following characterizes an analog quantity?
Discrete levels represent changes in a quantity.
Its values follow a logarithmic response curve.
It can be described with a finite number of steps.
It has a continuous set of values over a given range.
18.
The condition for a system to be stable is
All poles of its transfer function lie on the left half of s-plane
All poles of its transfer function must be right half of s-plane
All zeros of its transfer function must be right half of s-plane
All zeros of its transfer function must be left half of s-plane
19.
The basic properties of DFT includes1) Linearity2) Periodicity3) Circular symmetry4) Summation
1, 2 and 3 are correct
1, 2 and 4 are correct
1 and 3 are correct
All the four are correct
20.
What audio file format is best for use on the web?
.MP3
.MIDI
.AAC
.WAV
21.
Y[n] = x[n]* δ[n]\delta\left[n\right]δ[n] is
x[n]
\delta\left[n\right]δ[n]
1
x[n] \delta\left[n\right]δ[n]
22.
If W4100W_4^{100}W4100 = Wx200W_x^{200}Wx200 then what is the value of x?
2
4
8
16
23.
Why are gates used when miking a drum kit?
used to isolate drum sounds on a track
to allow drums to bleed together in mix
24.
If x(n) is a real sequence and X(k) is its N-point DFT, then which of the following is true?
X(N-k)=X(-k)
X(N-k)=X*(k)
X(-k)=X*(k)
All of the mentioned
25.
Quantized and coded version of the discrete time signals are
Analog signals
Digital signals
Both A and B
Coded signal
26.
What is the transform that is suitable for evaluating the z-transform of a set of data on a variety of contours in the z-plane?
Goertzel Algorithm
Fast Fourier transform
Chirp-z transform
None of the mentioned
27.
Which control is not typical on a compressor?
Threshold
Attack
Release
Ratio
Frequency
28.
If x(n) and X(k) are an N-point DFT pair, then X(k+N)=?
X(-k)
-X(k)
X(k)
None of the mentioned
29.
If the contour is a circle of radius r and the zk are N equally spaced points, then what is the value of zk?
re-j2πkn/N
rejπkn/N
rej2πkn
rej2πkn/N
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