phon

1. 1.

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

   响度单位,数值上等于被认为与所测声音一样响的1000赫兹纯音的声强分贝数。

方(响度级的单位)；[医] А(音响单位)

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