适用于通过成对空间分离的压力传感麦克风检测声音强度的仪器，并规定了用于测量声音强度的仪器及其相关校准器的性能要求。 本标准的目的是确保根据ISO 9614测定声功率时使用的声强测量的准确性。为了满足该标准的要求，需要使用仪器来分析三分之一倍频程或倍频程波段的声强，并可选地提供A加权波段电平。

Applies to instruments which detect sound intensity by pairs of spatially separated pressure sensing microphones and specifies performance requirements for instruments used for the measurement of sound intensity, and their associated calibrators. The purpose of this standard is to ensure the accuracy of measurements of sound intensity applied to the determination of sound power in accordance with ISO 9614. To meet the requirements of that standard, instruments are required to analyse the sound intensity in one-third octave or octave bands, and optionally to provide A-weighted band levels.