- Johnson noise
-
n.〚after J. B. Johnson, 20th-c. U.S. physicist〛thermal background noise in a radio receiver
* * *
Universalium. 2010.
Johnson noise
Look at other dictionaries:
Johnson noise — ☆ Johnson noise n. [after J. B. Johnson, 20th c. U.S. physicist] thermal background noise in a radio receiver … English World dictionary
Johnson noise — šiluminis triukšmas statusas T sritis fizika atitikmenys: angl. Johnson noise; thermal agitation noise; thermal noise vok. thermisches Rauschen, n; Wärmegeräusch, n; Wärmerauschen, n rus. тепловой шум, m; шум теплового возбуждения, m pranc. bruit … Fizikos terminų žodynas
johnson noise — noun Usage: usually capitalized J Etymology: after John B. Johnson b1887 American physicist : thermal noise … Useful english dictionary
Johnson noise — noun see thermal noise … Useful english dictionary
Johnson–Nyquist noise — (thermal noise, Johnson noise, or Nyquist noise) is the electronic noise generated by the thermal agitation of the charge carriers (usually the electrons) inside an electrical conductor at equilibrium, which happens regardless of any applied… … Wikipedia
Noise equivalent temperature difference — (NETD) is a measure of the sensitivity of a detector of thermal radiation in the infrared, terahertz radiation or microwave radiation parts of the electromagnetic spectrum. It is the scene temperature difference equal to either the internal noise … Wikipedia
Noise-equivalent temperature — (NET) is a measure of the sensitivity of a detector of thermal radiation in the infrared, terahertz or microwave portions of the electromagnetic spectrum. It is the amount of incident signal temperature that would be needed to match the internal… … Wikipedia
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 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
