Difference between revisions of "Conversion formulas for environmental noise metrics"
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Revision as of 21:25, 25 March 2011
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Contents
Scope
What are the appropriate formulas for converting various environmental noise metrics (e.g. LDEN, Lnight, LAeq,22-07, LAeq,07-22, LAeq,24h) into each other?
The formulas should take into account
- a) the use of different time bases (e.g. 24 h for LAeq,24h, 8 h for Lnight)
- b) the use of weights for different times of day
- c) different calculation heights (e.g. 4 m for Lden)
- d) the typical activity profile of the noise source in question (e.g. relative traffic densities of day, evening, and night).
Definition
Data
Description of the data used for obtaining the value of the variable (e.g. measurement data; mathematical method and its parameters).
Please include references (preferably using the <ref> </ref> tags) and links to original data, as appropriate.
Dependencies
List of upstream variables. The variables can be listed used descriptive (free-format) names or unambiguous identifiers (e.g. Analytica IDs).
Unit
Unit in which the result is expressed.
Formula
Algebra or other explicit methods if possible (e.g. Analytica code between the <anacode> </anacode> tags).
Result
If possible, a numerical expression or distribution.
See also
Links to relevant information that does not belong to Definition.
Keywords
References
...will appear here automatically, if cited above using the <ref> </ref> tags. Additional references can also be listed here.
Related files
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