ISO 11904-2-2004 声学.从接近耳朵的声源处测定声排放强度.第2部分:利用人体模型技术

标准号：ISO 11904-2-2004
中文标准名称：声学.从接近耳朵的声源处测定声排放强度.第2部分:利用人体模型技术
英文标准名称：Acoustics - Determination of sound immission from sound sources placed close to the ear - Part 2: Technique using a manikin
标准类型：L31;A42
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：L31;A42
国际标准分类号：17.140.01
适用范围：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.