【摘要】 构建了基于相位相消法的超表面消声结构，利用改变外接电路中的电容大小来实现声波的相位调控，通过数值模拟方法对该结构的共振频率和加以不同电容时对反射声波的相位进行模拟计算，得到模拟结果显示该方法可以有效抑制噪声。同时，采用阻抗管的双传声法进行实验测试，实验结果显示：该结构共振频率的测试数据与数值仿真结果高度吻合，通过仿真模拟，可以调控该结构的消声频段，可使结构对于低频噪声也有很好的降噪效果。设计的消声结构相比一般的主动控制降噪技术，设计更为简单，成本低廉，可以实现对特定频段噪声的有效抑制，是一种较为新颖的噪声控制方法。更多还原

【Abstract】 The article constructs a noise-reducing structure of the metasurface based on the phase cancellation method, achieves the phase control of sound waves by changing the size of capacitors in the external circuit, simulates and calculates the resonant frequency of the structure and the phase of reflected sound waves when being attached to different capacitors by numerical simulation, and the obtained simulation results demonstrate that this method can effectively restrain noise. At the same time, this paper conducts experimental tests by using the double sound transmission method of the impedance tube, the experimental results show that the test data of the resonant frequency of the structure is highly consistent with numerical simulation results, and the anechoic frequency band of the structure can be regulated through simulation, which can make the structure also have a good noise-reducing effect for low-frequency noise. Compared with the general active noise-reducing control technology, the anechoic structure designed in the article is simpler and cheaper, which can restrain noise effectively in a specific frequency band, and it is a relatively novel method for noise control.更多还原