Flutter (electronics and communication): Difference between revisions

Revision as of 07:10, 29 September 2023

Revision as of 14:34, 2 October 2023

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In [[electronics]], [[signals processing]], and [[telecommunicationcommunication]], '''flutter''' is the rapid [[:wikt:variation|variation]] of [[Signalling (telecommunication)|signal]] parameters, such as [[amplitude]], [[Phase (waves)|phase]], and [[frequency]] with respect to time. Examples of electronic flutter are:

*Rapid variations in received signal levels, such as variations that may be caused by [[atmospheric]] disturbances, [[antenna (electronics)|antenna]] movements in a high wind, or interaction with other signals.

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*In radio [[transmission (telecommunications)|transmission]], rapidly changing signal levels, together with variable [[Multipath propagation|multipath]] time delays, caused by [[Reflection (physics)|reflection]] and possible partial absorption of the signal by aircraft flying through the radio beam or common scatter volume.

*The variation in the transmission characteristics of a loaded [[telephone line]] caused by the action of telegraph direct currents on the [[Electrical load|loading]] coils.

*In recording and reproducing equipment, the deviation of [[frequency]] caused by irregular mechanical motion, ''e.g.,'' that of [[Capstan (tape recorder)|capstan]] angular velocity in a tape transport mechanism, during operation. A related term is [[wow_(recording)|wow]].

==See also==