標準號：ISO 11904-2-2004
中文標準名稱：聲學.從接近耳朵的聲源處測定聲排放強度.第2部分:利用人體模型技術
英文標準名稱：Acoustics - Determination of sound immission from sound sources placed close to the ear - Part 2: Technique using a manikin
標準類型：L31;A42
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：L31;A42
國際標準分類號：17.140.01
適用范圍：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 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 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.