ISO 11904-2:2004规定了靠近耳朵的声源进行声音输入的基本框架测量方法。这些测量用装备有耳机模拟器（包括麦克风）的人体模型进行。测量值随后被转换成相应的自由场或扩散场水平。结果作为自由场相关或扩散场相关等效连续A加权声压级给出。该技术被表示为人体模型技术。 ISO 11904-2:2004适用于接近耳朵的声音，例如在设备测试期间或在工作场所从具有音频通信设施的耳机或听力保护器发出声音。 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.