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A decibel figure on a machine.
Also known as: Sound power marking, Noise label machinery
The marking stating the guaranteed sound power level of outdoor equipment.
States the guaranteed sound power level of a piece of outdoor equipment.
Contexts: Public information
Gives sound power rather than sound pressure, which is a property of the machine and not of a listening position — so the number cannot be compared with a measurement taken at a distance and routinely is.
Contexts: Public information
A figure in decibels within a rounded outline showing a sound-wave device, fixed to the machine beside its rating plate.