美国和欧洲的DAB发展概况

Outline of DAB in USA and Europe

文章开始重点叙述了美国开发的带内同频道（ＩＢＯＣ）和带内邻频道（ＩＢＡＣ）这两种带内ＤＡＢ系统，并简介了美国ＤＡＢ的发展过程和计划进度。接着，文章介绍了受欢迎的尤里卡－１４７ＤＡＢ系统及欧洲等一些国家的发展动态。在结束语中，作者阐明了自己对ＤＡＢ广播的一些看法。

At the beginning the paper mainly introduces IBOC and IBAC DAB systems of USA and their developments and scheduling. Then the paper says some thing about the Eureka 147 DAB system and the current situation in Europe. In the concluding remarks, the authors express some ideas about DAB.