8. Decoder:
It is the process of converting code into plain
text or any format that is useful for subsequent
processes.
Low pass filter:
It is a filter that passes signals with a
frequency lower than a certain cut-off frequency
and attenuates signals with frequencies higher
than cut-off frequency.
12. Advantages:
Long distance communication.
Higher transmitter efficiency.
Higher noise immunity.
Disadvantages:
It requires large bandwidth.
The circuits are very complex.
Applications:
Used in satellite transmission system.
Space communication.
Telephony.
CD – Recent application of PCM.