Emphasis (telecommunications)

RIAA equalisation curve for vinyl records.

In telecommunications emphasis is the intentional alteration of the amplitude-vs.-frequency characteristics of the signal to reduce adverse effects of noise in a communication system. Typically some part of the input is boosted during conversion to a signal, and then later the output is correspondingly attenuated so that the original input comes through unaffected while noise is reduced due to not having been boosted, only attenuated.

单词	Preemphasis network
释义	Preemphasis network 英语百科 Emphasis (telecommunications) In telecommunications emphasis is the intentional alteration of the amplitude-vs.-frequency characteristics of the signal to reduce adverse effects of noise in a communication system. Typically some part of the input is boosted during conversion to a signal, and then later the output is correspondingly attenuated so that the original input comes through unaffected while noise is reduced due to not having been boosted, only attenuated.
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Preemphasis network

Emphasis (telecommunications)