Specifies requirements for audiometers designed primarily for use in determining hearing threshold in comparison with a chosen standard reference threshold level. Ensures that tests of hearing, particularly threshold, on a given human ear performed with different audiometers which comply with this standard shall give substantially the same results under comparable conditions and that the results obtained shall represent a good comparison between the hearing of the ear tested and the reference threshold of hearing.

SUPERSEDES IEC 177 AND IEC 178

IEC 60645-2 Ed. 1.0

IEC 60645-1 Ed. 2.0

UNE 20641:1981 - Identical

DIN 45620 (1985-03) - Similar

BS 5966:1980 - Identical

AS 2586-1983 - Identical

SS IEC 645:1986 - Identical