关于全数字式扬声器系统的讨论

Discussion of All-digital Loudspeaker System

随着超大规模集成电路制造技术的迅速发展,扬声器系统的设计与制造也逐渐向低功耗、数字化、集成化的方向发展,从而推进了全数字式扬声器系统的理论和实验研究。介绍了全数字扬声器系统的实现原理、基本结构和研究现状,重点对系统的编码、开关控制和数字换能器部分的实现方式进行了分类与比较,并对其实现原理进行了解释说明。

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.