- noun a repeated change in tape speed owing to mechanical or circuit problems, causing signal distortion
- Rapid fluctuations in a signal or quantity, such as amplitude or frequency.
- In sound reproduction, a form of distortion manifesting itself as rapid fluctuations of pitch. It is caused by equipment speed variations occurring during recording, dubbing, or reproduction. When occurring at low frequencies, known as wow.
- The rapid fluctuation in the strength of a received signal. May be caused, for instance, by improper tuning, or antenna movements.
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