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  2. Wow and flutter measurement - Wikipedia

    en.wikipedia.org/wiki/Wow_and_flutter_measurement

    This will often result in different readings as the correlation between record and playback flutter shifts. On well maintained, precise machines, it may be difficult to procure a reference tape with higher tolerances. Therefore, a record-playback test using the stop-start technique, can be, for practical purposes, the best that can be accomplished.

  3. Network performance - Wikipedia

    en.wikipedia.org/wiki/Network_performance

    Jitter is the undesired deviation from true periodicity of an assumed periodic signal in electronics and telecommunications, often in relation to a reference clock source. Jitter may be observed in characteristics such as the frequency of successive pulses, the signal amplitude , or phase of periodic signals.

  4. Packet delay variation - Wikipedia

    en.wikipedia.org/wiki/Packet_delay_variation

    Instantaneous packet delay variation is the difference between successive packets—here RFC 3393 does specify the selection criteria—and this is usually what is loosely termed "jitter", although jitter is also sometimes the term used for the variance of the packet delay. As an example, say packets are transmitted every 20 ms.

  5. Bufferbloat - Wikipedia

    en.wikipedia.org/wiki/Bufferbloat

    Bufferbloat can also cause packet delay variation (also known as jitter), as well as reduce the overall network throughput. When a router or switch is configured to use excessively large buffers, even very high-speed networks can become practically unusable for many interactive applications like voice over IP (VoIP), audio streaming , online ...

  6. Y.1564 - Wikipedia

    en.wikipedia.org/wiki/Y.1564

    ITU-T Y.1564 is designed to serve as a network service level agreement (SLA) validation tool, ensuring that a service meets its guaranteed performance settings in a controlled test time, to ensure that all services carried by the network meet their SLA objectives at their maximum committed rate, and to perform medium- and long-term service testing, confirming that network elements can properly ...

  7. Jitter - Wikipedia

    en.wikipedia.org/wiki/Jitter

    Jitter period is the interval between two times of maximum effect (or minimum effect) of a signal characteristic that varies regularly with time. Jitter frequency, the more commonly quoted figure, is its inverse. ITU-T G.810 classifies deviation lower frequencies below 10 Hz as wander and higher frequencies at or above 10 Hz as jitter. [2]

  8. Sports At Any Cost - projects.huffingtonpost.com

    projects.huffingtonpost.com/ncaa/sports-at-any...

    Average attendance last year was among the 10 worst in the NCAA’s top level. Yet Georgia State’s 32,000 students are still required to cover much of the costs. Over the past five years, students have paid nearly $90 million in mandatory athletic fees to support football and other intercollegiate athletics — one of the highest ...

  9. Audio system measurements - Wikipedia

    en.wikipedia.org/wiki/Audio_system_measurements

    Jitter A measurement of the variation in period (periodic jitter) and absolute timing (random jitter) between measured clock timing versus an ideal clock. Less jitter is generally better for sampling systems. Sample rate A specification of the rate at which measurements are taken of the analogue signal. This is measured in samples per second ...