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PULSE MODULATION DPCM

Authored by SHARANYANIVASINI JS

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PULSE MODULATION DPCM
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10 questions

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1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is the main purpose of pulse modulation?

a. To compress signals
b. To encrypt signals
c. To transmit signals over long distances
d. To filter signals

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is differential pulse code modulation?

a. A type of pulse modulation
b. A type of digital modulation
c. A type of analog modulation
d. A type of frequency modulation

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is the difference between PCM and DPCM?

a. DPCM does not quantize the signal
b. PCM does not quantize the signal
c. DPCM uses a predictive quantization scheme
d. PCM uses a predictive quantization scheme

4.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is the purpose of differential encoding in DPCM?

a. To reduce the number of bits in the signal
b. To increase the signal-to-noise ratio
c. To reduce the quantization error in the signal
d. To reduce the bandwidth of the signal

5.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

How does DPCM achieve higher compression compared to PCM?

a. By quantizing the signal with a higher resolution
b. By encoding the difference between adjacent samples
c. By increasing the sampling rate of the signal
d. By decreasing the sampling rate of the signal

6.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is the effect of increasing the step size in DPCM quantization?

a. Higher signal fidelity
b. Lower signal fidelity
c. Higher compression rate
d. Lower compression rate

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

If a signal has a maximum amplitude of 2V and a quantization step size of 0.5V, what is the maximum number of quantization levels?

a. 4
b. 8
c. 16
d. 32

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