- reference noise level
- Техника: контрольный уровень шумов
Универсальный англо-русский словарь. Академик.ру. 2011.
reference noise level
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Noise level — In telecommunication, noise level is the noise power, usually relative to a reference.In atmospheric sound transmission, noise level is the noise power of the longitudinal sound wave relative to a point of reference. Note: Noise level is usually… … Wikipedia
Ambient noise level — In atmospheric sound transmission or noise pollution, ambient noise level is the sound pressure level at a given location, normally specified as a reference level to study a new intrusive sound source.Ambient sound levels are often measured in… … Wikipedia
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 (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 temperature — In electronics, noise temperature is one way of expressing the level of available noise power introduced by a component or source. The power spectral density of the noise is expressed in terms of the temperature (in kelvins) that would produce… … Wikipedia
Noise reduction — For sound proofing, see soundproofing. For scientific aspects of noise reduction of machinery and products, see noise control. Noise reduction is the process of removing noise from a signal. All recording devices, both analogue or digital, have… … Wikipedia
Level sensor — Level sensors are used to detect liquid level. The liquid to be measured can be inside a container or can be in its natural form (e.g. a river or a lake). The level measurement can be either continuous or point values. Continuous level sensors… … Wikipedia
level — 1. Any rank, position, or status in a graded scale of values. 2. A test for determining such rank or position. acoustic reference l. the biological reference l. for sound measurements. When the term decibel is used to … Medical dictionary
noise — Synonyms and related words: ALGOL, Aesopian language, Babel, Bedlam let loose, COBOL, EDP, FORTRAN, Greek, aimlessness, alphabetic data, alphanumeric code, amplitude, angular data, argot, assembler, atmospherics, auditory effect, auditory… … Moby Thesaurus
Signal-to-noise ratio — For signal to noise ratio in statistics, see Cohen s d. Signal to noise ratio (often abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. It is defined… … Wikipedia
