BK知识库 | 声压—残余声强指数及动态能力
向声强测量系统的两个通道馈入完全相同的声信号,所测量的声压级与指示的声强级之差。以分贝表示,指数通常为正。
The pressure-residual intensity index for a given measurement system is defined as the difference between the measured sound pressure level and the indicated intensity level when the intensity probe is placed in a zero intensity sound field. It is expressed in decibel and the index will normally be positive.
声强测量系统的动态能力通过从声压-残余声强指数中减去K来确定,即
The dynamic capability of an intensity measurement system is determined by substracting K,
当K为7 dB(误差1 dB)或10 dB(误差0.5 dB)。
which is 7 dB (survey grade) or 10 dB (engineering and precision grades) from the pressure-residual intensity index.
使用双声压传声器法,给定传声器间距 r 的声场和测量系统指示器之间的关系如下所示。
The relationship between sound field and measurement system indicators for a given microphone spacing Δr using the two pressure microphone method is shown below.
还可以在这里找到我们
知乎
世界上最安静的房间 | 在消声室静静是种什么样的体验 | 国产大飞机C919
拍西瓜的科学依据 | 声学界吉尼斯 | 最冷的乐器 | 特别烧钱的坑
微信
您还可以通过如下方式联系我们,了解更多产品与应用详情:
邮箱:info@bksv.com.cn
官网:www.bksv.cn
电话:400-900-3165(周一至周五9:00-18:00)