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standard noise level

См. также в других словарях:

  • Channel noise level — In telecommunications, the term channel noise level has the following meanings: The ratio of the channel noise at any point in a transmission system to an arbitrary level chosen as a reference.[1][2] The noise power spectral density in the… …   Wikipedia

  • Circuit noise level — Circuit noise level: At any point in a transmission system, the ratio of the circuit noise at that point to an arbitrary level chosen as a reference. Note: The circuit noise level is usually expressed in dBrn0, signifying the reading of a circuit …   Wikipedia

  • Noise measurement — is carried out in various fields. In acoustics, it can be for the purpose of measuring environmental noise, or part of a test procedure using white noise, or some other specialised form of test signal. In electronics it relates to the sensitivity …   Wikipedia

  • Noise figure — (NF) is a measure of degradation of the signal to noise ratio (SNR), caused by components in a radio frequency (RF) signal chain. The noise figure is defined as the ratio of the output noise power of a device to the portion thereof attributable… …   Wikipedia

  • Noise-induced hearing loss — (NIHL) is an increasingly prevalent disorder that results from exposure to high intensity sound, especially over a long period of time. Contents 1 Description 2 Mechanism 3 Types 3.1 …   Wikipedia

  • Noise (electronics) — Electronic noise [1] is a random fluctuation in an electrical signal, a characteristic of all electronic circuits. Noise generated by electronic devices varies greatly, as it can be produced by several different effects. Thermal noise is… …   Wikipedia

  • Noise regulation — includes statutes or guidelines relating to sound transmission established by national, state or provincial and municipal levels of government. After the watershed passage of the United States Noise Control Act of 1972,[1] other local and state… …   Wikipedia

  • Noise mitigation — is a set of strategies to reduce noise pollution. The main areas of noise mitigation or abatement are: transportation noise control, architectural design, and occupational noise control. Roadway noise and aircraft noise are the most pervasive… …   Wikipedia

  • Noise and vibration on maritime vessels — are not the same but they have the same origin and come in many forms. The methods to handle the related problems are similar, to a certain level, where most shipboard noise problems are reduced by controlling vibration. Contents 1 Sources 1.1… …   Wikipedia

  • Noise dosimeter — A noise dosimeter (American) or noise dosemeter (British) is a specialized sound level meter intended specifically to measure the noise exposure of a person integrated over a period of time; usually to comply with Health and Safety regulations… …   Wikipedia

  • Image noise — Noise clearly visible in an image from a digital camera Image noise is random (not present in the object imaged) variation of brightness or color information in images, and is usually an aspect of electronic noise. It can be produced by the… …   Wikipedia

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