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是噪声要求标准还是测试标准
如果是噪声的要求标准的话,要看具体产品来的.除了欧盟噪音指令 2000/14/EC 外的产品的噪声一般是客人要求或公司根据行业内水平内定标准.如果是噪声测试标准的话,噪声的声功率测试是根据ISO 3744-1994 Acoustics - determination of sound power levels of noise sources using sound pressure - Engineering method in an essentially free field over a reflecting plane,声压级的测试是根据ISO 11203:1995
Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions from the sound power level |
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发表于 2007-8-16 10:22:36
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