능동제어 기술을 이용한 드론의 음질개선에 관한 연구

Abstract

In recent years with the widespread application of drones, the noise problem caused by drones has become a key research topic. Much effort has been conducted towards noise-level reduction of drones in the past decades but is insufficient regarding the use of sound pressure levels as the noise reduction index of drones. Considering the difficulty of implementing drones, a simplified active sound-quality control (ASQC) method is presented in this paper based on the LMS algorithm. Sound quality research has focused on the estimation of noise quality changes by evaluating the sense of comfort. A comparison of Matlab simulation results and subjective evaluations shows that ANC positively affects acoustic comfort. Finally, based on a jury's evaluation of the noise Improvement Level（IL）, an optimal optimization plan is selected, which provides a new method of dealing with drone sound quality.