声学.测量由计算机和办公装置发出的高频噪声

ISO 9295-2015

声学.测量由计算机和办公装置发出的高频噪声

Acoustics -- Determination of high-frequency sound power levels emitted by machinery and equipment

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适用范围：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.

发布日期： 2015-05-01

实施日期： 2015-05-01

中标分类号： Z32 - 环境保护 - 噪声、振动测试方法

ICS分类号： 17.140.20 - 机器和设备的噪声 ; 35.020 - 信息技术（IT）综合

标准组织： ISO - 国际标准化组织标准

全文来源： WF

英文关键词： Absorption Acoustic measurement Acoustic testing Acoustics Airborne noise emitted Free fields High frequencies Instruments Loudness levels Machines Measurement Measuring environment Measuring instruments Measuring rooms Measuring techniques Measuring uncertainty Microphones Noise Noise (environmental) Noise measurements Noise sources Operating conditions Power levels Reverberation Reverberation room method Reverberation rooms Rooms Safety of machinery Sound Sound absorption Sound level Sound levels Sound power Sound pressure Sound sources Testing Sound intensity Engines Volume (sound)

语种：汉语

页数： 18

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声学.测量由计算机和办公装置发出的高频噪声

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