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数字音频广播（ＤＡＢ）将成为２１世纪全球主要的广播方式。文章介绍了ＤＡＢ发展背景．叙述了ＤＡＢ系统的构成和调制解调及信源压缩编码方法，最后介绍了ＤＡＢ接收机组成。
Digital Audio Broadcasting (DAB) will be the world’s premier broadcast of the 21st century. The article describes the DAB development background. Describes the structure of the DAB system and modulation and demodulation and source compression coding method, and finally introduces the composition of the DAB receiver.