Environmental Noise, is unwanted sound, which may cause either nuisance or damage to health. 'Nuisance' is however subjective: some sounds are considered noise by some but not by others, e.g. certain music, church bells, calls to prayer from a minaret, sounds of playing children, birds, wind, sea, etc. A schematic representation of hearing. ... Music is an art, entertainment, or other human activity which involves organized and audible sound, though definitions vary. ... A church building (or simply church) is a building used in Christian worship. ... A bell is a simple sound-making device. ... Adhan ([]) is the Islamic call to prayer, recited by the muezzin. ... Minarets (Arabic manara منارة, but more usually مئذنة, and Urdu minra pl. ... A play is a common form of literature, usually consisting chiefly of dialog between characters, and usually intended for performance rather than reading. ... A female child A child (plural: children) is a young human. ... For other meanings of bird, see bird (disambiguation). ... Wind is the roughly horizontal movement of air (as opposed to an air current) caused by uneven heating of the Earths surface. ... Sunset at sea Look up Sea in Wiktionary, the free dictionary Look up maritime in Wiktionary, the free dictionary. ...

Environmental Noise is one of the most underestimated causes of health damage. There are several kinds of noise by source, including aviation noise, car noise, train noise and industrial noise. Aviation noise is a form of environmental noise. ... Car noise is generated by the engine and friction of the tyres as they move across the road surface as well as voluntary sources of noise a car might make, such as a music centre or its horn. ... Traditionally, workplace noise has been a hazard linked to heavy industries such as ship-building and associated only with noise induced hearing loss (NIHL). ...

See also

• Noise - Root page
• Noise measurement
• A-weighting
• ITU-R 468 noise weighting
• Weighting filter
• Equal-loudness contour
• Fletcher-Munson curves
• Antinoise
• Bel (acoustics)
• Muzak
• Noise pollution

In common use the word noise means unwanted sound, but in electronics noise can refer to the electronic signal corresponding to acoustic noise (in an audio system) or the electronic signal corresponding to the (visual) noise commonly seen as snow on a degraded television or video image. ... Noise measurement is carried out in various fields. ... The A-weighting curve is one of a family of curves defined in IEC179 and various other standards for use in Sound level meters. ... The ITU-R 468-weighting curve (originally defined in CCIR recommendation 468) is widely used when measuring noise in audio systems, especially in the UK, Europe, and former countries of the British Empire such as Australia and South Africa. ... The A, B, C, and D weighting curves A weighting filter is used to emphasise some aspects of a phenomenon over others, for measurement or other purposes. ... This is a Root page - a common introduction to several more specialised pages. ... The Fletcher-Munson curves are one of many sets of equal-loudness contours for the human ear, determined experimentally by H Fletcher and W A Munson, and reported in a paper entitled Loudness, its definition, measurement and calculation in J.Acoust. ... Active noise control (also known as noise cancellation or antinoise) is a method for preventing unwanted sound. ... The decibel is a dimensionless unit (like percent) that is a measure of ratios on a logarithmic scale. ... Muzak Holdings LLC is a company based in Fort Mill, South Carolina, which is a suburb of Charlotte, North Carolina. ... Noise pollution is unwanted human-created sound that disrupts the environment. ...

External links

• http://www.coned.iup.edu/SafetyScience/OCCHEALTH/oh3.htm