香港六合彩开奖 11904-2:2004

础苍苍耻濒茅别 (Edition 1, 2004)

Nouvelle 茅dition disponible : 香港六合彩开奖 11904-2:2021

搁茅蝉耻尘茅

香港六合彩开奖 11904-2:2004 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.

香港六合彩开奖 11904-2:2004 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.

香港六合彩开奖 11904-2:2004 is applicable in the frequency range from 20 Hz to 10 kHz. For frequencies above 10 kHz, 香港六合彩开奖 11904-1 can be used.

Informations g茅n茅rales

脡tat actuel
: 础苍苍耻濒茅别

Date de publication
: 2004-11

Stade
: Annulation de la Norme internationale [95.99]
Edition
: 1
颁辞尘颈迟茅 technique :
香港六合彩开奖/TC 43

ICS :
17.140.01
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