数字音响关键技术研究  

Research on the Key Technologies of Digital Audio

作　　者：田浩[1] 

机构地区：[1]湖北经济学院电子工程系,武汉430205

出　　处：《湖北第二师范学院学报》2010年第8期47-49,共3页Journal of Hubei University of Education

摘　　要：数字音响的原理较早就已提出,但直到近些年数字音响技术才迅速发展,并广泛应用到社会生活的各个方面,原因就是其关键技术近期才突破了瓶颈,得到了解决和改善。本文阐述了数字音响技术的基本原理,分类归纳了原声信号数字化方法,比较了几种典型的音频格式,论述了音响设备数字化的主要任务,重点分析了数字功率放大器的种类和特点,介绍了数字功率放大器的最新研究进展,指出了数字音响技术的发展趋势和特点。Principles of digital audio have been submitted earlier,but digital audio technology is improved rapidly and widely applied to all walks of our life until recent years,the reason is that the key breakthrough and the bottleneck have been resolved or improved in near term.The basic principles of digital audio technology,the acoustic signal classification of digital methods were described in this paper.However,the focus was the main digital audio equipments,while digital power amplifier types and characteristics,the latest research advances digital power amplifier were introduced.Finally,the digital audio technology development trends and characteristics were concluded.

关 键 词：数字音响技术 编码 压缩 数字功率放大器 

分 类 号：TP91[自动化与计算机技术]