National Institute of Advanced Industrial Science and Technology (AIST)
Japanese
This database presents statistics of the hearing-threshold-level distribution as a function of age. The values are displayed for men and women separately in the form of an audiogram.
For retrieving data of Japanese people only, see Statistical distribution of hearing threshold levels as a function of age (Japanese data).

Data presented in the audiogram are the hearing threshold levels of both-ear average, in decibels, measured for otologically normal persons (i.e., those with no sign of injury or disease that might affect their hearing ability).
The values are expressed as the deviation from the median, which is designated as 0 dB, for 18-year-old listeners.
Hearing thresholds of this database were calculated by the National Institute of Advanced Industrial Science and Technology (AIST) and were adopted as a basis for revised ISO 7029[1].
[1] ISO 7029: 2017, Acoustics – Statistical distribution of hearing thresholds related to age and gender.