70:) for perceived sound magnitude, while the primary loudness standard methods result in a linear representation. A sound with a loudness of 1 sone is judged equally loud as a 1 kHz tone with a sound pressure level of 40 decibels above 20 micropascals. The phon is psychophysically matched to a reference frequency of 1 kHz. In other words, the phon matches the sound pressure level (
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Such measurements have been performed for known sounds, such as pure tones at different frequencies and levels. The
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phons, regardless of its physical properties. The phon was proposed in DIN 45631 and ISO 532 B by
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perceived as differing in loudness. The purpose of the phon is to provide a logarithmic measurement (like
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are a way of mapping the dB SPL of a pure tone to the perceived loudness level in phons (see
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By definition, the loudness level in phons of a sound is the sound pressure level (in
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kHz pure tone. For instance, if a sound is perceived to be equal in intensity to a 1
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Logarithms, preferred numbers, decibel, neper, phon - naturally related!
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Logarithmen, Normzahlen, Dezibel, Neper, Phon - natürlich verwandt!
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kHz tone with an SPL of 50 dB, then it has a loudness of 50
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Pease, C.B. (1974-07-01). "Combining the sone and phon scales".
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in metrology. It is defined as a unit of loudness level by the
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level for tones and complex sounds. Loudness is measured in
350:Correlation between sones und phons − calculator
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74:) in decibels of a similarly perceived 1
169:, American Institute of Physics, 2004.
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50:, a linear unit. Human sensitivity to
116:American National Standards Institute
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192:www.animations.physics.unsw.edu.au
106:that is judged as having the same
16:Logarithmic unit of loudness level
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247:"Loudness Units: Phons and Sones"
370:Human-based units of measurement
333:from the original on 2016-12-18.
289:. Acoustical Society of America
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251:hyperphysics.phy-astr.gsu.edu
167:Signals, Sound, and Sensation
54:is variable across different
345:Explanation with definitions
312:Paulin, Eugen (2007-09-01).
225:10.1016/0003-682X(74)90011-5
62:to a human ear, they may be
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110:. The phon unit is not an
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287:Welcome to ASA Standards
188:"dB: What is a decibel?"
131:equal-loudness contours
30:Equal-loudness contours
120:Acoustical Terminology
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165:William M. Hartmann,
88:Stanley Smith Stevens
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21:Phon (disambiguation)
270:UNSW Music Acoustics
19:For other uses, see
124:ANSI/ASA S1.1-2013
102:) of a 1 kHz
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213:Applied Acoustics
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293:14 December
147:A-weighting
100:dB SPL
56:frequencies
359:Categories
256:2019-01-12
197:2019-01-12
153:References
94:Definition
380:Acoustics
233:0003-682X
122:standard
104:pure tone
328:Archived
141:See also
135:loudness
108:loudness
68:decibels
44:loudness
365:Hearing
118:in the
112:SI unit
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283:"phon"
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385:Sound
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52:sound
48:sones
295:2020
229:ISSN
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36:phon
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