phon

11.07  phon. Unit of loudness level, judged or calculated as specified in definitions 11.05 and...

calculated loudness level

11.06  calculated loudness level. Loudness level calculated by a specified procedure. Unit, phon. Annotation              Such procedures are given in ANSI/ASA S3.4, American National Standard...

loudness level

11.05  loudness level. Of a sound, the median sound pressure level in a specified number of trials of a free progressive wave having a frequency of 1000 Hz that is judged equally loud as the unknown sound when presented to listeners with normal hearing who...

sone

11.04  sone. Unit of loudness. One sone is the loudness of a pure tone presented frontally as a plane wave of 1000 Hz and a sound pressure level of 40 dB, re 20 µPa....

loudness

11.03  loudness. That attribute of auditory sensation in terms of which sounds may be ordered on a scale extending from soft to loud. Unit, sone. Annotation              Loudness depends...