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Discussion of All-digital Loudspeaker System

MA Dengyong1,2,CAI Yefeng2,MU Yongsheng2,YANG Jun2,ZHOU Jianming1,CHAI Guoqiang1(1.Sonavox Electronic Co.,Ltd.,Suzhou Jiangsu 215133,China; 2.Communication Acoustic Laboratory of Institute of Acoustic,Chinese Academy of Sciences,Beijing 100190,China)  
Companied with the rapid development of very large scale integrated circuits fabrication techno-logy,the design and manufacture of loudspeaker systems also is proceeding towards the directions of the low power-loss,digitization and integration.Then,the development trend propels the research on theory and experiment of all-digital loudspeaker system.In this paper,the realization principle,basic structure and current status of the research about all-digital loudspeaker system are introduced.The implementation methods of the encoding module,on/off controlling module and digital transducer are classified and compared,then the realization principle of these methods is illustrated in detail.
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