Which one of the following statements about differential pulse code modulation (DPCM) is true?

A The sum of message signal sample with its prediction is quantized
B The message signal sample is directly quantized, and its prediction is not used
C The difference of message signal sample and a random signal is quantized
D The difference of message signal sample with its prediction is quantized

Correct Answer: The difference of message signal sample with its prediction is quantized

Bissoy MCQ
#Electronics And Communications Engineering #Digital Communication

Related Questions

In Pulse Code Modulation system
A Large bandwidth is required
B Quantising noise can be overcome by companding
C Quantising noise can be reduced by decreasing the number of standard levels
D Suffers from the disadvantage of its incompatibly with TDM
One of the advantages of base modulation over collector modulation of a transistor class C amplifier is
A Improved efficiency
B Better linearity
C High power output per transistor
D The lower modulating power requirement
A shift register moves the _____ left or right. Serial loading means storing a word in a shift register by entering _____ bit per clock pulse. With parallel or broadside loading, it takes only one _____ pulse to load the input word.
A light, eight, clock
B right, eight, clock
C bits, one, register
D bits, one, clock
E None of the above
A reduction of 21% in the price of pulse enables a person to by 10.5 kg more for Tk. 100. How much is reduced per kg of pulse?
A Tk 2.50
B Tk 2.25
C Tk 2
D Tk 2.30
The maximum recommended pulse rate R, when exercising , for a person who is x years of age is given by the equation R = 176- 0.8 x. what is the age , in years , of a person whose maximum recommended pulse rate when exercising is 140?
A 40
B 45
C 50
D 55
The maximum recommended pulse rate R, when exercising .for a person who is x years of age is given by the equation R = 176 - 0.8 x . what is the age, in years , of a person whose maximum recommended pulse rate when exercising is 140?
A 40
B 45
C 50
D 55
In an electric circuit, the reaction of a circuit to a given pulse input is known as the pulse response.
A True
B False
If a periodic pulse waveform has a pulse width and the time between pulses each equal to or greater than five time constants, the capacitor will
A Partially charge and fully discharge during each period of the input waveform
B Fully charge and partially discharge during each period of the input waveform
C Fully charge and fully discharge during each period of the input waveform
D Partially charge and partially discharge during each period of the input waveform
The minimum duration of pulse in a pulse triggering system for thyristors should be at least
A 10μs
B 30ms
C 10ms
D 1s
In a simple on-off controller with differential gap, the magnitude of differential gap determines
A The level of accuracy
B The life of controller
C Both (a) and (b)
D Neither (a) nor (b)

Next steps