BS EN ISO 9295:2015规定了四种声功率级测定方法 在本规范所涵盖的频率范围内，机械和设备发出的高频噪声 倍频带中心频率为16 kHz，包括11.2 kHz和22.4 kHz之间的频率。他们是 补充ISO 3741和ISO 3744中描述的方法。前三种方法基于 混响试验室技术。第四种方法利用反射平面上的自由场。规定设备安装和操作的试验条件为规定条件 在ISO 3741或ISO 3744（如适用）中。交叉引用:ISO 3741ISO 3744ISO 6926ISO 9613-1ISO 3745ISO 7779ISO/IEC指南98-3GUM:1995ECMA-74购买本文件时提供的所有当前修订版均包含在购买本文件中。

BS EN ISO 9295:2015 specifies four methods for the determination of the sound power levels of high-frequency noise emitted by machinery and equipment in the frequency range covered by the octave band centred at 16 kHz, which includes frequencies between 11,2 kHz and 22,4 kHz. They are complementary to the methods described in ISO 3741 and ISO 3744. The first three methods are based on the reverberation test room technique. The fourth method makes use of a free field over a reflecting plane.The test conditions which prescribe the installation and operation of the equipment are those specified in ISO 3741 or ISO 3744 as applicable.Cross References:ISO 3741ISO 3744ISO 6926ISO 9613-1ISO 3745ISO 7779ISO/IEC Guide 98-3GUM:1995ECMA-74All current amendments available at time of purchase are included with the purchase of this document.