IEC 61012-1990 标准详情
- 标准号:IEC 61012-1990
- 中文标题:在有超声情况下测量可闻声用滤波器
- 英文标题:Filters for the measurement of audible sound in the presence of ultrasound
- 标准类别:国际电工委员会标准
- 发布日期:1990-01
Defines the electrical characteristics of a U-weighting filter mainly for use with sound level meters meeting the requirements of IEC 651. Where the measurement of the ultrasonic component frequencies is required, the practice is to measure the unwei
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