标准摘要
[中文适用范围]： 本国际标准规定了测定机械和设备在以 16 kHz 为中心的倍频程所覆盖的频率范围内发出的高频噪声声功率级的四种方法，其中包括 11.2 kHz 至 22.4 kHz 之间的频率。 千赫。 它们是 ISO 3741 和 ISO 3744 中描述的方法的补充。 前三种方法基于混响测试室技术。 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测试条件是指定的 [外文原描述]： 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.
英文名称Acoustics — Determination of high-frequency sound power levels emitted by machinery and equipment