关键词: 车载声重放；扬声器；频率响应；网罩开孔率

Abstract: Loudspeakers in cars are typically positioned in the car door panel, A-pillar, and other areas. To meet aesthetic requirements, a mesh cover is commonly used to shield them. However, the mesh cover can alter the radiation characteristics of the loudspeakers, which can negatively impact the sound reproduction in the car. This study aims to investigate the effects of different mesh cover hole rates on the frequency response and sound quality of loudspeakers. The research begins by analyzing the theoretical impact of mesh covers on the radiation characteristics of loudspeakers. Next, objective measurements are conducted to assess the frequency response characteristics of loudspeakers equipped with mesh covers of varying hole rates. Finally, subjective experiments are carried out to verify the influence of different mesh covers on the sound quality of the loudspeakers. The findings reveal that the mesh cover primarily affects the high-frequency region of the loudspeaker's frequency response. Additionally, a lower opening rate of the mesh cover presents a greater obstacle to the radiation characteristics of the loudspeaker. These results provide valuable insights for the design of loudspeaker mesh covers in cars.

Key words: Sound reproduction in vehicle; Loudspeaker; Frequency response; Mesh opening rate