The equivalentsoundabsorption coefficient of the system can be calibrated by the distilled water. The accuracy of the system can be gotten by the magnesium sulfate solutions of known concentration.
利用蒸馏水标校测量系统等效的吸声系数,采用已知浓度的硫酸镁溶液来标校测量系统的测量精度。
2
A novel soundabsorption technology, semi-passive piezoelectric soundabsorption, is presented and its performance is analyzed used electrical equivalent model in this paper.