phon

2 ENTRIES FOUND:

phon

noun \ˈfän\

Definition of PHON

: the unit of loudness on a scale beginning at zero for the faintest audible sound and corresponding to the decibel scale of sound intensity with the number of phons of a given sound being equal to the decibels of a pure 1000-hertz tone judged by the average listener to be equal in loudness to the given sound

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