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jitter |
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jitterA flicker or fluctuation in a transmission signal or display image. The term is used in several ways, but it always refers to some offset of time and space from the norm. For example, in a network transmission, jitter would be a bit arriving either ahead or behind a standard clock cycle or, more generally, the variable arrival of packets. In computer graphics, to "jitter a pixel" means to place it off side of its normal placement by some random amount in order to achieve a more natural antialiasing effect. jitter [′jidĀ·ər] (communications) In facsimile, distortion in the received copy caused by momentary errors in synchronism between the scanner and recorder mechanisms; does not include slow errors in synchronism due to instability of the frequency standards used in the facsimile transmitter and recorder. (electronics) Small, rapid variations in a waveform due to mechanical vibrations, fluctuations in supply voltages, control-system instability, and other causes.
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| : Some couples with nuptials planned aboard the Queen Mary are experiencing wedding-day jitters of a different sort: they're wondering whether the venue will still be around when they take their vows, the Long Beach Press-Telegram reported. The "median" method for the reduction of the effect of noise and trigger jitter on waveform data is described. Measurements of signal quality are Amplitude, Rise Time, Fall Time, and Jitter (Random and Deterministic). |
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