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本文报道了利用压强梯度法原理构成的便携式声强测量装置,该装置既能测量声强,也能测量声压的真有效值,还可以测量质点振动速度的真有效值,它是一种可以对声场的能量密度和能流密度进行综合分析的新型装置,为噪声分析,声功率测量和声源鉴别等项工作提供了一种新型测试手段。该装置能在100主5000Hz的频率范围内进行可靠的测量,使用方法简单,操作方便。
In this paper, we report a portable sound intensity measurement device based on the principle of pressure gradient method. The device can not only measure the sound intensity, but also measure the true RMS value of the sound pressure, as well as the true RMS value of the particle vibration velocity. The new device, which comprehensively analyzes the energy density and energy density of the sound field, provides a new test method for noise analysis, acoustic power measurement and sound source identification. The device can be 100 main 5000Hz frequency range for reliable measurement, the use of simple, easy to operate.