ISO 4869-1:1990 PDF
Acoustics — Hearing protectors — Part 1: Subjective method for the measurement of sound attenuation
Название (английский):
ISO 4869-1:1990
Acoustics — Hearing protectors — Part 1: Subjective method for the measurement of sound attenuation
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 7
- Дата публикации:
- 20 декабря 1990 г.
- Издание:
- ISO IS 4869 edition 1 version 1
- ICS:
- 13.340.20
Описание (английский):
Specifies a method for measuring sound attenuation at the threshold of hearing. The procedure is designed to yield values close to the maximum attenuation which are not normally attained under field conditions. The values reflect the attenuating characteristics only to the extent that users wear the device in the same manner as did the test subjects. Data are collected at low sound pressure levels but which are also representative of the values at higher sound pressure levels.
Технические детали
- Технический комитет
- ISO/TC 43/SC 1 - Noise
- SKU
- ISO 4869-1:1990