phon


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phon

(fōn),
A unit of loudness of sound.

phon

(fŏn)
n.
A unit of apparent loudness, equal in number to the intensity in decibels of a 1,000-hertz tone perceived to be as loud as the sound being measured.

phon

(fōn)
A unit of loudness of sound.

phon

(fon) [Gr. phönē, voice, sound]
A unit of measure of perceived loudness.