摘要
主要介绍了目前具有代表性的2种数字扬声器技术。对数字换能器阵列和多音圈扬声器的结构、声压场机理,及其它潜在的实现技术进行了对比评述。讨论了数字扬声器对2种驱动技术的要求。评估了6位数字样机系统的声学特性,同时对于扩展至16位系统的可行性,包括半导体大规模制造技术的使用,过采样和噪声整形技术的应用也进行了探讨。
This paper mainly introduces two currently competing digital loudspeaker technologies. Structure of digital transducer arrays and multiple voice coils, mechanism of sound pressure field, as well as other possible techniques are expressed by contrast. The requirements for the loudspeaker's two driving technologies are discussed, and the performance of 6 bit prototype systems is evaluated. Methods to extend the feasibility to 16 bits, utilities of semiconductor mass fabrication technique and applications of over sampling and noise shaping are discussed.
出处
《电声技术》
北大核心
2004年第8期18-23,共6页
Audio Engineering
关键词
数字换能器阵列
多音圈扬声器
声压场
digital transducer arrays
multiple voice coils loudspeaker
sound pressure field
