noise
1. Unwanted sound, particularly complex sound that lacks a musical quality because the various frequencies of which it is composed are not whole or partial number multiples (harmonics) of each other. 2. Unwanted additions to a signal not arising at its source; e.g., the 60-cycle frequency wave in an electrocardiogram; largely eliminated from modern (post-1980) machines (includes visual n. on imaging studies). See signal-to-n. ratio. 3. Extraneous uncontrolled variables influencing the distibution of measurements in a set of data. [M.E., fr. O.Fr., fr. L.L. nausea, seasickness]
- structured n. in radiology, the signals from anatomic structures that interfere with the detection of significant pathology.
- white n. a complex sound consisting of many frequencies over a wide band of frequencies; often used for masking of hearing in the nontest ear in the measurement of hearing.

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(noiz) unwanted variations in a signal that result from imperfections in the transmission of the signal, e.g., electrical signals in electrodiagnosis other than those being studied (most often originating within the electrical apparatus). See also signal-to-noise ratio, under ratio.

Medical dictionary. 2011.

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  • noise — [ nwaz ] n. f. • fin XIe; « bruit, tapage » en a. fr.; lat. nausea « mal de mer » ♦ Vx Querelle, dispute. « C est une noise que vous nous cherchez » (Jouhandeau). « de petites noises » (Duhamel). ♢ (1611) Mod. Loc. Chercher (des) noise(s) à qqn.… …   Encyclopédie Universelle

  • noise — Noise, f. penac. Tantost signifie debat, contens, querele, Altercatio, Concertatio, Contentio, Dissidium, Iurgium, Adiurgium, Lis, Litigium, Praecertatio, Rixa, Velitatio {{t=g}}néikê,{{/t}} contentio, {{t=g}}néikô, m. néikêsô,{{/t}} contendo,… …   Thresor de la langue françoyse

  • Noise — Noise, n. [F. noise noisy strife, quarrel, brawl, fr. L. nausea seasickness, sickness, disgust. See {Nausea}.] 1. Sound of any kind. [1913 Webster] The heavens turn about in a most rapid motion without noise to us perceived. Bacon. [1913 Webster] …   The Collaborative International Dictionary of English

  • noise — NOISE. s. f. Querelle, dispute, riote. Grande noise. chercher noise. emouvoir une noise. il a émû la noise. il s emeut noise entre eux. il a commencé la noise. c est luy qui est autheur de la noise, cause de la noise. pour moy. je ne veux point… …   Dictionnaire de l'Académie française

  • noise — [ nɔız ] noun *** uncount a loud or unpleasant sound: The noise from the machines is deafening. make a noise: Please will you stop making so much noise! too much noise: The neighbors said that we were making too much noise. a. count a sound: The… …   Usage of the words and phrases in modern English

  • noise — noise; noise·ful; noise·less; an·ti·noise; ge·noise; gé·noise; noise·ful·ly; noise·less·ly; noise·less·ness; …   English syllables

  • noise — [noiz] n. [ME < OFr, noise, quarreling, clamor < L nausea: see NAUSEA] 1. a) loud or confused shouting; din of voices; clamor b) any loud, discordant, or disagreeable sound or sounds 2. a sound of any kind [the noise of the rain] 3 …   English World dictionary

  • NOiSE — ist ein Manga von Tsutomu Nihei aus dem Jahr 2001. Er bildet das Prequel zu seinem erfolgreichen Werk Blame!. Das letzte Kapitel von NOiSE enthält Tsutomu Niheis 1994 in der Manga Zeitschrift Afternoon erschienenen Debütmanga BLAME.… …   Deutsch Wikipedia

  • NOiSE — ノイズ (Noizu) Type Seinen Genre Cyberpunk One shot Manga Auteur Tsutomu Nihei Éditeur …   Wikipédia en Français

  • Noise — Noise, v. i. To sound; to make a noise. Milton. [1913 Webster] …   The Collaborative International Dictionary of English

  • Noise — Noise, v. t. [imp. & p. p. {Noised}; p pr. & vb. n. {Noising}.] 1. To spread by rumor or report. [1913 Webster] All these sayings were noised abroad. Luke i. 65. [1913 Webster] 2. To disturb with noise. [Obs.] Dryden. [1913 Webster] …   The Collaborative International Dictionary of English

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