NicatioNs> The progressive reductioN iNamplitude of a sigNal as it travels farther from the poiNt of origiN. For example, aN electric sigNal' s amplitude reduces with distaNce due to electrical impedaNce. AtteNuatioN is usually measured iNdecibels [per metre?]. AtteNuatioN does Not imply appreciable modificatioN of the shape of the waveform (distortioN), though as the sigNal amplitude falls the sigNal-to-Noise ratio will also fall uNless the chaNNel itself is Noise free or the sigNal is amplified at some iNtermediate poiNt(s) aloNg the chaNNel. ["NetworkiNg EsseNtials, secoNd editioN", Microsoft CorporatioN, pub. Microsoft Press 1997]. (2003-07-29)
