line noise definition communications
1. Spurious characters due to electrical noise
in a communications link, especially an EIA-232
serial connection. Line noise may be induced by poor connections, interference or crosstalk
from other circuits, electrical storms, cosmic rays
, or (notionally) birds crapping on the phone wires.
2. Any chunk of data in a file or elsewhere that looks like the results of electrical line noise.
3. Text that is theoretically a readable text or program source but employs syntax
so bizarre that it looks like line noise. Yes, there are languages this ugly. The canonical example is TECO
, whose input syntax is often said to be indistinguishable from line noise. Other non-WYSIWYG
editors, such as Multics
" and Unix
", in the hands of a real hacker, also qualify easily, as do deliberately obfuscate
d languages such as INTERCAL