Indicate which one of the following system is digital(a) Pulse position modulation(b) Pulse code modulation(c) Pulse width modulation(d) Pulse amplitude modulation
Answers
(b) Pulse code modulation.
Answer:
(b) Pulse code modulation is the correct answer.
Explanation:
Modulation is a method of varying one or more frequencies of wave with a modulating signal.
Modulation is basically used to transmit signals.
The use of antenna is reduced while using the process of modulation.
Pulse code modulation is using amplitude of the signal and is converted into some binary value.
It is represented as a row or series of pulses.
The output of pulse code modulation is digits or digital.
The advantage of pulse code modulation is that it can be trasmitted over large distances with great speed.
Another advantage of pulse code modulation is that it has very low noise.
There is no loss and distortion in the signal.
Hence,
(b) Pulse code modulation is the correct answer.