Jitter or Noise is the modification of fields in a database while preserving the aggregate characteristics of that make the database useful in the first place.

The slight movement of a transmission signal in time or phase that can introduce errors and loss of synchronization. More jitter will be encountered with longer cables, cables with higher attenuation, and signals at higher data rates. Also, called phase jitter, timing distortion, or intersymbol interference. For more information and illustrations, [..]

"to move agitatedly," 1931, American English, of unknown origin; see jitters. Related: Jittered; jittering.

Generic digital-data term that is defined here for the sake of digital audio-visual content. Jitter is the unwanted variation of one or more characteristics of a periodic signal in electronics and tel [..]

  Variation in timing, or time of arrival, of received signals; an unwanted lack of perfection which can lead to bit areas.

The difference between a real signal and its ideal due to distortion.

Abrupt and unwanted variations of one or more signal characteristics, such as the interval between successive pulses, the amplitude of successive cycles, or the frequency or phase of successive cycles. Note 1: Jitter must be specified in qualitative terms (e.g., amplitude, phase, pulse width or pulse position) and in quantitative terms (e.g., avera [..]

Internet Glossary (1) Flickering on a display screen. Jittering can be caused by 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.(2) Generally, any distortion of a signal or image caused by poor synchronization.

(1) Flickering on a display screen. Jittering can be caused by the following: (a) a number of hardware problems, such as a slow refresh rate, a bad connection between the video adapter and monitor, a [..]

A slight movement of a transmission signal in time or phase, which can introduce errors and loss of synchronization for high-speed, synchronous communications.

In the VoIP world, jitter is the variance in time between voice/data packets arriving which can be caused by network congestion or changes in the routing of the data.   // ‹

An anti-fraud measure programmed into the card reader

The slight movement of a transmission signal in time or phase that can introduce errors and loss of synchronization. More jitter will be encountered with longer cables, cables with higher attenuation [..]

jitter (in the context of computer networks) is a measure of the variance of latency (pings) accross the network. Jitter in a network can be measured using the time variation in successive pings. The [..]

(n) small rapid variations in a waveform resulting from fluctuations in the voltage supply or mechanical vibrations or other sources(n) a small irregular movement

Minor random variation in the length of the period of vocal fold vibration.

When triggering an external device there is a certain amount of delay between when the signal is sent and when the device responds. This value, called latency, is consistent and can be accounted for. Jitter, on the other hand, is the uncertainty in the triggering delay. The triggering specifications for a spectrometer might be 8.3 μs ± 9 ns, for ex [..]

 measures delivery of packets in the proper order, which is of particular importance for VoIP. It is an important category for an MPLS Network Service Level Agreement

Analog communication line distortion caused by variations of a signal from its reference timing position. JPEG (Joint Photographic Experts Group)

This refers to fluctuation among clock cycles, which can cause jittery images or bit errors during data transfers. Epson uses statistical techniques to regulate the following five types of jitter.

The variability in frequency as measured from cycle to cycle. A type of pseudo-periodic modulation of frequency that is typically faster, narrower, and less controlled than vibrato. Increased jitter is associated with increased emotionality. Note that vocal jitter tends to increase with age, hence older people sometimes speak in a way which makes t [..]

An imaging phenomenon that limits the accuracy of measurement to at least two pixel separations because signals impinging on the sensor may fall on a pixel or on the space between pixels. Statisticall [..]

In Voice over Internet Protocol (VoIP) technologies, jitter refers to a delay in receiving a voice data packet. This delay affects the transmission of voice quality and voice data.

A term used to describe the short-time instability of a signal. The instability may be in amplitude, phase, or both. The term is applied especially to signals reproduced on the screen of a cathode-ray [..]

A signal distortion caused when a carrier signal is not synchronized to its reference timing positions is referred to as jitter. Jitter can cause transmission errors and loss of synchronization for high-speed synchronous communication links.

Measures the variation in the arrival time of the individual voice packets as they make their way along various routes over the Internet. Measured in ms. Users normally notice jitter as choppy audio.

Packet delay variation. It is defined as the variance of RTT (average difference between RTT measures and the average RTT). This equation is used: Sqrt( (Average(RTT1**2, ... , RTTn**2) - Average(RTT1, ..., RTTn)**2).

In VoIP jitter is the variation in the time between packets arriving caused by network congestion, timing drift, or route changes. A jitter buffer can be used to handle jitter.

 distortion in a digital signal caused by a shift in timing pulses; can cause data interpretation errors