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带内同频（In－BandOn－Channel）技术以其兼容性、频谱有效性、灵活性和可靠性成为美国数字音频广播（DAB）极具吸引力的数字化方案。目前有两家机构开发了IBOC系统：USADR和LucentDR。详细介绍了这两套系统，包括编、解码和调制技术。
In-BandOn-Channel technology has become an attractive digital solution for digital audio broadcasting (DAB) in the United States for its compatibility, spectrum efficiency, flexibility and reliability. There are currently two agencies that have developed IBOC systems: USADR and LucentDR. Details of these two systems, including coding, decoding and modulation technology.