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Emphasis (telecommunications)

In signal processing, pre-emphasis is a technique to protect against anticipated noise and loss. The idea is to boost the frequency range that is most susceptible to noise and loss beforehand, so that after a noisy and lossy process (transmission over cable, tape recording...) more information can be recovered from that frequency range. Removal of the…

In audio signals, In digital transmission & Overview

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In audio signals

In digital transmission

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Emphasis (telecommunications)

Nodes51
Edges50
Triples11
Avg. degree1.96
Density0.039216
Components1

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signal emphasis frequency de-emphasis pre-emphasis channel used loss amplitude system noise range signals transmission filter equalization overshoot response value data

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
PCI Expressinstance ofWell-known serial data standards0.80text
SATAinstance ofWell-known serial data standards0.80text
SAS require transmitted signals to use de-emphasis.Effects of channel insertion lossAs a lossy channel becomes longerinstance ofWell-known serial data standards0.80text
high-frequency attenuation worsensinstance ofWell-known serial data standards0.80text
the signal will be increasingly distorted.In the demonstration belowinstance ofWell-known serial data standards0.80text
a 5 Gbps PRBS-9 test pattern is sent through PCB traces of various lengths on standard FR-4 material.At some pointinstance ofWell-known serial data standards0.80text
depending on the specifics of the channelinstance ofWell-known serial data standards0.80text
the transmitterinstance ofWell-known serial data standards0.80text
and the receiverinstance ofWell-known serial data standards0.80text
the signal will become too distorted for the receiver to correctly interpret itinstance ofWell-known serial data standards0.80text
the link will experience a high error rate or completely failinstance ofWell-known serial data standards0.80text

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