摘要
Amazon Echo的推出,带动了智能音箱的飞速发展。为减小扬声器对麦克风的影响,这类音箱的扬声器往往向下辐射。但是扬声器向下辐射时,声音的辐射效果不是很理想,一般需要加扩散锥予以改善。通过COMSOL Multiphysics有限元分析软件,通过调整扩散锥的形状及高度,仿真得出的音箱系统频响、振膜位移等声学特性对比结果,为设计人员提供一定的参考。
Since release of Amazon Echo,smart speakers become very popular,on which down-firing-driver design are usually used to minimize the impact from driver. However,the sound performance is compromised with a down-firing driver,and a dispersion cone is required to improve the performance. This paper describes the FEM simulation using COMSOL Multiphysics,by adjusting the shape and height of the dispersion cone. Acoustic characteristics such as frequency response and displacement of driver diaphragm simulated will give reference for design of this kind of speaker.
出处
《电声技术》
2017年第9期41-44,62,共5页
Audio Engineering
