SS-EN-ISO-11904-2 › Historical Revision Information
Acoustics - Determination of sound immissions from sound sources placed close to the ear - Part 2: Technique using a manikin (ISO 11904-2:2004)
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This part of ISO 11904 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 freefield 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 part of ISO 11904 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 audiocommunication facilities. This part of ISO 11904 is applicable in the frequency range from 20 Hz to 10 kHz. For frequencies above 10 kHz, ISO 11904-1 can be used.
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17.140.01 (Acoustic measurements and noise abatement in general Including acoustic insulation)
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Designation Name
SS-EN ISO 11904-2:2004
Revision Level
2004 EDITION
Status
Superseded
Publication Date
Nov. 19, 2004
Language(s)
English
Page Count
22
International Equivalent
EN ISO 11904-2:2004(IDT); ISO 11904-2:2004(IDT)