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Welcome to the Speech Coding MCQs Page

Dive deep into the fascinating world of Speech Coding with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Speech Coding, a crucial aspect of Wireless and Mobile Communications. In this section, you will encounter a diverse range of MCQs that cover various aspects of Speech Coding, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Wireless and Mobile Communications.

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Check out the MCQs below to embark on an enriching journey through Speech Coding. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Wireless and Mobile Communications.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Speech Coding. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Speech Coding MCQs | Page 2 of 7

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Q11.
Low frequency signals contribute very little to the total speech signals.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q12.
Quantization is a process of mapping a ________ range of amplitude of a signal into a finite set of __________ amplitudes.

a.

Continuous, discrete

b.

Discrete, continuous

c.

Discrete, discrete

d.

Continuous, continuous

Discuss
Answer: (a).Continuous, discrete
Q13.
For a n bit quantizer, number of levels is equal to __________

a.

n

b.

2ⁿ

c.

n²

d.

2n

Discuss
Answer: (b).2ⁿ
Q14.
Distortion produced by quantization is directly proportion to ________ and inversely proportional to ______

a.

Number of levels, step size

b.

Amplitude of the signal, step size

c.

Square of step size, number of levels

d.

Amplitude of the signal, number of levels

Discuss
Answer: (c).Square of step size, number of levels
Q15.
Signal to quantization noise ratio of a PCM encoder is given by _________

a.

6.02n + α

b.

3n + 6.02α

c.

n + 6.02α

d.

6.02n + α

Discuss
Answer: (d).6.02n + α
Q16.
Companding technique used in the US is called ____________

a.

μ law

b.

A law

c.

Hybrid companding

d.

Direct companding

Discuss
Answer: (a).μ law
Q17.
An adaptive quantizer varies its ___________ in accordance to input speech signal power.

a.

Level

b.

Step size

c.

Amplitude

d.

Frequency

Discuss
Answer: (b).Step size
Q18.
Shannon predicted that better performance can be achieved by coding one sample at a time.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q19.
________ is a delayed decision coding technique.

a.

Adaptive quantization

b.

Uniform quantization

c.

Vector quantization

d.

Non-uniform quantization

Discuss
Answer: (c).Vector quantization
Q20.
The characteristics of compressor in μ-law companding are _________

a.

Continuous in nature

b.

Logarithmic in nature

c.

Linear in nature

d.

Discrete in nature

Discuss
Answer: (a).Continuous in nature
Page 2 of 7

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