What is ISO 4869‑1- Subjective method for the measurement of sound attenuation for hearing protectors about?
ISO 4869‑1 discusses hearing protectors. ISO 4869‑1 is an international standard that provides a subjective method for the measurement of sound attenuation for hearing protectors to ensure protection against hazardous noise at the workplace.
ISO 4869‑1 is the first part of a multi-part series that specifies a subjective method for measuring sound attenuation of hearing protectors at the threshold of hearing.
The method specified by ISO 4869‑1 is a laboratory method designed to yield reproducible values under controlled measurement conditions. The values reflect the attenuating characteristics of the hearing protector only to the extent that users wear the device in the same manner as did the test subjects.
Note: Due to masking from physiological noise in the occluded ear tests, sound attenuations below 500 Hz can be overestimated by a few decibels.
Who is ISO 4869‑1- Subjective method for the measurement of sound attenuation for hearing protectors for ?
ISO 4869‑1 on subjective method for the measurement of sound attenuation for hearing protector is useful for:
Manufacturers of hearing protectors
Health and safety departments
Acoustic engineers
Testing laboratories/test persons of hearing protectors
Why should you use ISO 4869‑1- Subjective method for the measurement of sound attenuation for hearing protectors ?
Hearing protectors are commonly used to reduce the noise to which the ear is ex...
Open preview (PDF)Acoustics. Hearing protectors - Subjective method for the measurement of sound attenuation