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

标准编号：ISO 11904-2:2004

中文名称：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

英文名称：Acoustics — Determination of sound immission from sound sources placed close to the ear — Part 2: Technique using a manikin

发布日期：2004-11

标准范围

ISO 11904-2:2004规定了靠近耳朵的声源发出的声音的基本框架测量方法。这些测量是用一个人体模型进行的，该模型配有包括麦克风在内的耳朵模拟器。随后将测量值转换为相应的自由场或漫射场水平。结果以自由场相关或扩散场相关的等效连续A加权声压级给出。这种技术被称为人体模型技术。ISO 11904-2:2004适用于暴露于耳朵附近来源的声音，例如在设备测试期间或在工作场所暴露于耳机或带有音频通信设施的听力保护器发出的声音。ISO 11904-2:2004适用于20 Hz至10 kHz的频率范围。对于10 kHz以上的频率，可以使用ISO 11904-1。

ISO 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.ISO 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.ISO 11904-2:2004 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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