Noise: (1) Unwanted sound, particularly a complex sound that lacks a musical quality because its various frequencies that comprise it are not whole-or-partial number multiples (harmonics) of each other. Cf.: harmony (2) Unwanted additions to a signal not arising at its source; e.g., the 60-cycle frequency wave in an electrocardiogram; largely eliminated from machines after 1980 (includes visual noise on imaging studies).signal:noise 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]
Source: Stedman's Medical Spellchecker, © 2006 Lippincott Williams & Wilkins. All rights reserved.
Noise: undesired sound, especially a random mix of different frequencies.
Source: CRISP
Source - MeSH 2007
Source - MeSH 2007
Source - CRISP
Source - MeSH 2007
Source - CRISP
Source: CRISP
The following list attempts to classify Noise into categories where each line is subset of the next.
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