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Noise calculation is the using the metric … Noise calculation is the using the metric dB(A). Noise immission is created by noise sources (noise emission) of various types which are propagating noise into the environment. A single source will create a certain level of immission primarily driven by originating sound power level and distance influenced by e.g. absorption and reflection. Several noise sources result in typically higher levels of immission. The method or process of determining the resulting immission level is called noise calculation, its graphical representation is called noise map. Noise calculation is done for the following reasons:
* to calculate a current situation based on existing physics, mostly when a physical measurement at a location is impractical
* to predict the resulting immission levels based on a planned change, e.g. set up of a new machine Mostly, noise calculation is part of any such planning process and may become part of the decision process for physical change Environment engineering differentiates between:
* indoor sound propagation, e.g. occupational health considerations
* outdoor sound propagation, e.g. city planning considerations as well as type of noise source, e.g.
* industrial noise
* rail or air traffic noise
* road noise Each of before mentioned require different algorithms for noise calculation which have been defined over time in a number of different national or international standards. As an example, outdoor sound propagation is defined in ISO standard 9613 which can be received from the ISO organisation or scientific literature.ISO organisation or scientific literature.
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Noise calculation is the using the metric … Noise calculation is the using the metric dB(A). Noise immission is created by noise sources (noise emission) of various types which are propagating noise into the environment. A single source will create a certain level of immission primarily driven by originating sound power level and distance influenced by e.g. absorption and reflection. Several noise sources result in typically higher levels of immission. The method or process of determining the resulting immission level is called noise calculation, its graphical representation is called noise map.phical representation is called noise map.
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Noise calculation
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