Need of pre-emphasis and de-emphasis circuits?

block diagram for preemphasis?

In FM, the effect of noise is more on higher frequencies when compared with low frequencies. Therefore in order to have high signal-to-noise ratio(low noise), the high frequencies are amplified at...

The process of boosting up the message signal to the sufficient level in order to faithful communication between the two communication parties.

This is one type of 'absolutism'.

de-emphasis is the complement of pre-emphasis, in the antinoise system called emphasis. Emphasis is a system process designed to decrease, (within a band of frequencies), the magnitude of some...