PRICES include / exclude VAT
Sponsored link
download between 0-24 hoursReleased: 2021
ISO 11904-2:2021
ISO 11904-2:2021-Acoustics-Determination of sound immission from sound sources placed close to the ear
Format
Availability
Price and currency
English PDF
Immediate download
127.78 USD
English Hardcopy
In stock
127.78 USD
French PDF
Immediate download
127.78 USD
French Hardcopy
In stock
127.78 USD
Standard´s number: | ISO 11904-2:2021 |
Pages: | 16 |
Edition: | 2 |
Released: | 2021 |
DESCRIPTION
ISO 11904-2:2021
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.