ISO 11904:2021
ISO 11904:2021 Acoustics – Determination of sound immission from sound sources placed close to the ear – Part 2: Technique using a manikin
CDN $195.00
Description
This document specifies basic framework measurement methods for sound immission from sound sources placed close to the ear. These measurements are carried out with a manikin, equipped with ear simulators including microphones. The measured values are subsequently converted into corresponding free-field or diffuse-field levels. The results are given as free-field related or diffuse-field related equivalent continuous A-weighted sound pressure levels. The technique is denoted the manikin technique.
This document is applicable to exposure to sound from sources close to the ear, for example during equipment tests or at the workplace to sound from earphones or hearing protectors with audio communication facilities.
This document is applicable in the frequency range from 20 Hz to 10 kHz. For frequencies above 10 kHz, ISO 11904-1 can be used.
Edition
2
Published Date
2021-03-04
Status
PUBLISHED
Pages
16
Language
English
Format
Secure PDF
Secure – PDF details
- Save your file locally or view it via a web viewer
- Viewing permissions are restricted exclusively to the purchaser
- Device limits - 3
- Printing – Enabled only to print (1) copy
See more about our Environmental Commitment
Abstract
This document specifies basic framework measurement methods for sound immission from sound sources placed close to the ear. These measurements are carried out with a manikin, equipped with ear simulators including microphones. The measured values are subsequently converted into corresponding free-field or diffuse-field levels. The results are given as free-field related or diffuse-field related equivalent continuous A-weighted sound pressure levels. The technique is denoted the manikin technique.
This document is applicable to exposure to sound from sources close to the ear, for example during equipment tests or at the workplace to sound from earphones or hearing protectors with audio communication facilities.
This document is applicable in the frequency range from 20 Hz to 10 kHz. For frequencies above 10 kHz, ISO 11904-1 can be used.
Previous Editions
Can’t find what you are looking for?
Please contact us at:
Related Documents
-
ISO 18662:2020 Traditional Chinese medicine – Vocabulary – Part 2: Processing of Chinese Materia Medica
CDN $86.00 Add to cart -
ISO 23975:2025 Traditional Chinese medicine – Priority list of single herbal medicines for developing standards
CDN $442.00 Add to cart -
ISO 16443:2014 Dentistry – Vocabulary for dental implants systems and related procedure
CDN $131.00 Add to cart -
ISO 16972:2020 Respiratory protective devices – Vocabulary and graphical symbols
CDN $86.00 Add to cart
