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[[Image:standard_deviation_diagram.svg|standard deviation diagram|thumb]] '''Jitter''' refers to the small, rapid variations in a waveform resulting from fluctuations in the signal's timing. In the context of [[digital communication]] and [[networking]], jitter can significantly impact the quality of voice, video, and data transmissions. It is a critical parameter in the fields of [[telecommunications]], [[audio engineering]], and [[video streaming]], where precise timing is crucial for the integrity and quality of the signal.

== Causes of Jitter ==
Jitter can be caused by a variety of factors, including [[electromagnetic interference]] (EMI), [[crosstalk]] between components, thermal noise, and imperfections in the transmission medium. In [[networks]], jitter can also result from network congestion, improper [[queue management]], and the varying paths packets may take through the network.

== Measurement and Effects ==
Jitter is typically measured in milliseconds (ms) and can be quantified using several methods, including peak-to-peak, RMS (Root Mean Square), and interval error measurements. High levels of jitter can cause [[packet loss]], [[misalignment]] of signal components, and errors in [[data transmission]], leading to degraded [[audio quality]], [[video artifacts]], and reduced [[data integrity]]. In [[VoIP]] (Voice over Internet Protocol) and video conferencing applications, excessive jitter can lead to noticeable delays, echoes, and interruptions.

== Mitigation Techniques ==
To mitigate the effects of jitter, various techniques and technologies are employed. These include the use of [[jitter buffers]] that temporarily store incoming packets to smooth out the delay variation, [[Quality of Service]] (QoS) mechanisms that prioritize time-sensitive traffic, and [[synchronization]] protocols like [[NTP]] (Network Time Protocol) for aligning system clocks. In addition, advanced [[error correction]] methods and [[adaptive jitter buffers]] can dynamically adjust to varying network conditions to maintain the quality of service.

== Jitter in Other Contexts ==
While jitter is most commonly associated with digital communications, it can also refer to variations in other contexts such as the stability of [[electrical power]] supplies (power jitter) or the precision of clock signals in [[electronics]] and [[computing]] (clock jitter). In these areas, jitter can affect the performance and reliability of systems, necessitating careful design and mitigation strategies.

[[Category:Telecommunications]]
[[Category:Networking]]
[[Category:Digital communications]]

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Jitter - Revision history

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