摘要
论述了相控阵扬声器系统的设计原理,结构、特色及工程应用.一般的扬声器系统,利用基于机械震动的物理、声学方法来获得良好性能,目前广为流行的线阵列扬声器系统,是将物理、声学技术发挥到极致,而相控阵扬声器系统则是将电子技术、数字技术、计算机技术、电声技术结合并创造性地运用DSP技术,研制适用的算法,对扬声器阵列中的所有单元的各个频段,分别进行适当的相位调控、音效处理,从而实现实时调控扬声器阵列辐射主瓣的辐射角、指向性和放声效果.
The general speaker system, which is based on the mechanical vibrations and acoustic, acquires a good performance, and the current line-array speaker gives full play to the physics and acoustic at present, ＂Phased-Array Speaker System＂ combines the electronic technology, digital technology, computer technology and electroacoustic technology and use the DSP technology creatively, develops applicable algorithm for the phase control and sound processing at each frequency band, in order to control the radiation angle, direetivity, sound effect of the main radiation lobe. The experts identified the system as ＂reach the international advanced level＂. The thesis discusses the design principle, structure, features and the engineering application of the ＂Phased Array Speaker System＂ which is a research project combined provincial ministry, education, production.
出处
《广州大学学报（自然科学版）》
CAS
2012年第4期75-78,共4页
Journal of Guangzhou University:Natural Science Edition
基金
广东省
教育部产学研科技项目(2009B090600034)资助
关键词
相控阵扬声器
数字声频处理器
幅射角
指向性
phased-array speaker
digital audio processor
radiation angle
directivity
