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Noise pollution, or sound pollution, is the propagation of noise or sound with potential harmful effects on humans and animals. The source of outdoor noise worldwide is mainly caused by machines, transport and propagation systems.
English: An Act to make provision for noise in a street to be a statutory nuisance; to make provision with respect to the operation of loudspeakers in a street; to make provision with respect to audible intruder alarms; to make provision for expenses incurred by local authorities in abating, or preventing the recurrence of, a statutory nuisance to be a charge on the premises to which they ...
Example of transportation noise and how it affects the community. Environmental noise is an accumulation of noise pollution that occurs outside. This noise can be caused by transport, industrial, and recreational activities. [1] Noise is frequently described as 'unwanted sound'. Within this context, environmental noise is generally present in ...
North–South Expressway in Malaysia.A roadway can be a line source of air and noise pollution and need not be a straight line.. A line source, as opposed to a point source, area source, or volume source, is a source of air, noise, water contamination or electromagnetic radiation that emanates from a linear (one-dimensional) geometry.
1/f noise; A-weighting; Ambient noise level; Antenna noise temperature; Artificial noise; Audio noise reduction; Audio system measurements; Black noise; Blue noise; Burst noise; Carrier-to-receiver noise density; Channel noise level; Circuit noise level; Colors of noise; Comfort noise; Comfort noise generator; Cosmic noise; Crackling noise; DBa ...
Noise measurement can also be part of a test procedure using white noise, or some other specialized form of test signal.In audio systems and broadcasting, specific methods are used to obtain subjectively valid results in order that different devices and signal paths may be compared regardless of the inconsistent spectral distribution and temporal properties of the noise that they generate.
Roadway noise is the most prevalent form of environmental noise.Pictured: São Paulo, Brazil. Roadway noise is the collective sound energy emanating from motor vehicles.It consists chiefly of road surface, tire, engine/transmission, aerodynamic, and braking elements.
Background noise is an important concept in setting noise levels. Background noises include environmental noises such as water waves , traffic noise , alarms , extraneous speech , bioacoustic noise from animals, and electrical noise from devices such as refrigerators , air conditioning , power supplies , and motors .