基于AMBE2000和CMX7141的数字对讲机基带系统的设计  

Design of Baseband System for Digital Interphone Based on AMBE2000 and CMX7141

作　　者：张超[1] 林孝康[1] 

机构地区：[1]清华大学深圳研究生院现代通信实验室,广东深圳518055

出　　处：《电声技术》2012年第3期32-35,59,共5页Audio Engineering

摘　　要：为了降低数字对讲机的成本,以8051作为中央处理器,采用语音编解码芯片AMBE2000和数字PMR处理器CMX7141,设计了一款遵从dPMR446标准,面向低端市场的数字对讲机基带系统。实验结果表明,该系统实现了数字通话,具有语音清晰、可靠性高、成本低等特点。A low - end baseband system of digital interphone conforming to dPMR446 standard is introduced in the paper. Vocoder chip AMBE2000 and digital PMR processor CMXT141 are adopted in the design, and 8051 works as the microcon- troller in order to reduce cost. Experiment results show that the system realizes digital conversation, and provides clear voice service with high reliability at a low cost.

关 键 词：AMBE2000 CMX7141 dPMR446 数字对讲机 基带 

分 类 号：TN921[电子电信—通信与信息系统]