threshold-of-hearing
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threshold of hearing
Also called: hearing threshold, threshold of audibility
HB50
lowest value of a sound pressure which just produces the sensation of hearing, usually taken as the level of sound at which, under specified conditions, a listener has a 50% chance of detecting the presence of the sound
The threshold of hearing varies from person to person, with age and sex, as well as frequency of sound. In practice, the threshold of hearing represents the onset level for subjective sound.
See also: equal-loudness level contour