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Synchronous fluctuations, flutter, are rapid changes in signal parameters such as amplitude, phase or frequency

. Flutter can be triggered by rapid field strength changes caused by atmospheric disturbances, the movement of mobile antennas or reflections and absorptions in the ionosphere. In the case of tape recorders

, synchronous fluctuations of the drive motors lead to frequency changes and thus to fluctuations in the pitch. The human ear is able to perceive synchronous fluctuations that cause frequency changes of a few per mille.

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Englisch: flutter
Updated at: 26.04.2016
#Words: 97
Translations: DE