金曜日, 3月 18, 2011


Irregular random variations in a radio signal.

A sampling phenomenon produced when a waveform is not sampled uniformly at an interval t each time, but rather at a series of slightly shifted intervals such that the average .
To make small quick jumpy movements

irregular random movement

vibratory motion

First Known Use: 1929

fluctuations in the image on a television screen or in copy received by facsimile transmission, caused by interference or by momentary failures of synchronization.

Random variation in the timing of a signal, especially a clock.

a number of hardware problems, such as a slow refresh rate,

a bad connection between the video adapter and monitor,

a hardware malfunction in the monitor, or poor synchronization in the signals being sent;
a nearby electrical conduit or transformer creating a higher-than-usual local magnetic field level.

a type of packet delay where the delay has an impact on the quality of the voice conversation.

A signal distortion caused when a carrier signal is not synchronized to its reference timing positions

can cause transmission errors and loss of synchronization for high-speed synchronous communication links.

errors in the timing of sample acquisition due to rapid amplitude changes

also known as Sample Offset Uncertainty

introduces some distortion and phase discrepancy

Higher frequencies are more susceptible