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A subjective unit of loudness, as perceived by a person with normal hearing, equal to the loudness of a pure tone having a frequency of 1,000 hertz at 40 decibels.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(General Physics) a subjective unit of loudness equal to that experienced by a normal person hearing a 1 kHz tone at 40 dB
[C20: from Latin sonus a sound]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
an acoustic unit for measuring loudness, judged equal to the loudness of a 40-decibel, 1-kilohertz reference sound.
[1945–50; < Latin sonus sound1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||sone - a unit of perceived loudness equal to the loudness of a 1000-hertz tone at 40 dB above threshold|
sound unit - any acoustic unit of measurement
phon - a unit of subjective loudness
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