Acoustics; Standard reference zero for the calibration of pure tone air conduction audiometers
Описание (англ.):
Specifies a standard for the scale of hearing threshold level. States the information in a form suitable for direct application to the calibration of audiometers, that is, in terms of the response of two different standard types of earphone measured on a coupler in accordance with IEC Publication 303.
Заменён стандартами:
ISO 389(1991.03)
Дата введения:
01.03.85
Дата отмены:
01.03.91
Нормативные ссылки:
DIN ISO 389-1988, EQV*ELOT 285-1980, NEQ*NF S30-007-1986, EQV