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IEVref:801-22-01ID:
Language:enStatus: Standard
Term: level
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Definition: logarithm of the ratio of a given quantity to a reference quantity of the same kind. The base of the logarithm, the reference quantity, and the kind of level must be indicated

NOTE 1 – The kind of level is indicated by use of a compound term such as sound power level or sound pressure level.

NOTE 2 – The value of the reference quantity remains unchanged, whether the chosen quantity is peak, root-mean-square, or otherwise.

NOTE 3 – The base of the logarithm is indicated by use of a unit of level associated with that base.


Publication date:1994-07
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