phon
[ fon ]
/ fɒn /
noun
a unit for measuring the apparent loudness of a sound, equal in number for a given sound to the intensity in decibels of a sound having a frequency of 1000 cycles per second when, in the judgment of a group of listeners, the two sounds are of equal loudness.
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Origin of phon
First recorded in 1930–35, phon is from the Greek word phōnḗ voice
Definition for phon (2 of 3)
Definition for phon (3 of 3)
phon.
phonetics.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for phon (1 of 2)
phon
/ (fɒn) /
noun
a unit of loudness that measures the intensity of a sound by the number of decibels it is above a reference tone having a frequency of 1000 hertz and a root-mean-square sound pressure of 20 × 10 –6 pascal
Word Origin for phon
C20: via German from Greek phōnē sound, voice
British Dictionary definitions for phon (2 of 2)
phon.
abbreviation for
Also: phonet phonetics
phonology
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for phon
phon-
pref.
Variant ofphono-
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for phon
phon
[ fŏn ]
A unit of apparent loudness. The loudness of a signal in phons is equal to the intensity in decibels of a 1,000-hertz tone judged to be as loud as the signal being measured.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.