cosmic noise
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Cosmic noise — and galactic radio noise is random noise that originates outside the Earth s atmosphere. It can be detected and heard on radio receivers. Elaboration Cosmic noise characteristics are similar to those of thermal noise. Cosmic noise is experienced… … Wikipedia
cosmic noise — ☆ cosmic noise n. interference caused by radio waves originating in sources beyond the earth … English World dictionary
cosmic noise — noun : unidentified celestial radio frequency radiation; especially : such radiation originating outside the Milky Way * * * Physics. radio frequency noise that originates outside the earth s atmosphere. [1945 50] * * * cosmic noise, = galactic… … Useful english dictionary
cosmic noise — kosminis triukšmas statusas T sritis fizika atitikmenys: angl. cosmic noise; extraterrestrial noise vok. extraterrestrisches Rauschen, n; kosmisches Rauschen, n; Weltraumrauschen, n rus. космический шум, m pranc. bruit cosmique, m … Fizikos terminų žodynas
cosmic noise — Physics. radio frequency noise that originates outside the earth s atmosphere. [1945 50] * * * … Universalium
Sudden cosmic noise absorption — [sʌdn kɔsmɪk nɔɪz əb sɔːpʃn, englisch], Abkürzung SCNA [essiːen eɪ], Störung des kosmischen Rauschens in der Ionosphäre … Universal-Lexikon
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
