signal-plus-noise-to-noise ratio

См. также в других словарях:

• 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

• signal-to-noise ratio — TV (S/N) Relationship between signal strength and a medium s inherent noise. VideoS/N indicates how grainy or snowy a picture will be, plus its color accuracy; audio S/N specifies amount of background tape hiss present with low or no volume… …   Audio and video glossary

• Carrier-to-noise ratio — In telecommunications, the carrier to noise ratio, often written CNR or C/N , is the signal to noise ratio (SNR) of a modulated signal. The CNR is the quotient between the average received modulated carrier power C and the average received noise… …   Wikipedia

• Contrast-to-noise ratio — Haze over Kuala Lumpur. Contrast to noise ratio (CNR) is a measure used to determine image quality. CNR is similar to the metric, signal to noise ratio (SNR), but subtracts off a term before taking the ratio. This is important when there is a… …   Wikipedia

• Noise shaping — is a technique typically used in digital audio, image, and video processing, usually in combination with dithering, as part of the process of quantization or bit depth reduction of a digital signal. Its purpose is to increase the apparent signal… …   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 (audio) — Noise in audio, recording, and broadcast systems refers to the residual low level sound (usually hiss and hum) that is heard in quiet periods of a programme. In audio engineering, it can refer either to the acoustic noise from loudspeakers, or to …   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 (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