См. также в других словарях:
noise background — triukšmo fonas statusas T sritis fizika atitikmenys: angl. noise background vok. Rauschuntergrund, m rus. фон шума, m; шумовой фон, m pranc. fond du bruit, m … Fizikos terminų žodynas
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 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 (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 (video) — For other uses, see Noise (disambiguation). On an empty channel, an analog TV receiver shows a snowy noise pattern. A similar pattern is shown if on a digital channel when not using a DTV converter box … Wikipedia
background noise — noun extraneous noise contaminating sound measurements that cannot be separated from the desired signal • Syn: ↑ground noise • Hypernyms: ↑background, ↑background signal • Hyponyms: ↑surface noise * * * background noise UK US … Useful english dictionary
Noise — This article is about noise as an unwanted phenomenon. For other uses, see Noise (disambiguation). NASA researchers at Glenn Research Center conducting tests on aircraft engine noise in 1967 In common use, the word noise means any unwanted … 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
Noise (radio) — In radio reception, noise is the superposition of white noise (also called static ) and other disturbing influences on the signal, caused either by thermal noise and other electronic noise from receiver input circuits or by interference from… … Wikipedia
background signal — noun extraneous signals that can be confused with the phenomenon to be observed or measured they got a bad connection and could hardly hear one another over the background signals • Syn: ↑background • Hypernyms: ↑noise, ↑interference,… … Useful english dictionary
