Каталог стандартов

+7 (495) 223-46-76 +7 (812) 309-78-59
inform@normdocs.ru
О компании Стандарты Контакты Заказать стандарт
СтандартыON

ÖNORM EN ISO 389-4:1999-05

Действует
Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise (ISO 389-4:1994)
ОписаниеИзмененияСсылкиВерсии

Ссылочные документы

ISO 389-2:1994
Действует
Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones — 12 стр.
IEC 60126:1973 ed2.0
Заменен
IEC reference coupler for the measurement of hearing aids using earphones coupled to the ear by means of ear inserts — 17 стр.
IEC 60318:1970 ed1.0
Заменен
An IEC artificial ear, of the wide band type, for the calibration of earphones used in audiometry — 9 стр.
IEC 60711:1981 ed1.0
Заменен
Occluded-ear simulator for the measurement of earphones coupled to the ear by ear inserts — 24 стр.
DIN EN ISO 389:1995-11
Отменен
Acoustics - Standard reference zero for the calibration of pure-tone air conduction audiometers (ISO 389:1991); German version EN ISO 389:1995 — 11 стр.
DIN EN ISO 389-2:1996-10
Действует
Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones (ISO 389-2:1994); German version EN ISO 389-2:1996 — 9 стр.