In today's wireless communications technology ,communication products can already carry other services,such as data,images,animation and multimedia,including voice. But voice communication is still the most basic and important mode of communication.ln this paper,the system for short distance communications,full duplex,and low-power wireless voice transmission system was built with MSP430F149 microcontroller as the core,M-Power500 which works in the 2.4GHz radio frequency band,and voice codec chip CMX639.After testing,the communication distance of the system is about 200m in the open environment ,and the design achieves the expected goals of point to point wireless intercom function.%无线通信技术发展到今天,通信产品已经可以承栽包括语音在内如数据、图像、动画以及多媒体等的其他业务,但语音通信仍然是最基本、最主要的通信方式.本文以MSP430F149单片机为控制核心,射频模块选用工作在2.4 GHz频段的M-Power500,语音编解码芯片则选用CMX639来搭建-针对短距离通信的、全双工、低功耗的无线语音传榆系统.经过测试,该系统在空旷的环境下,通信距离约200m,该设计实现了点对点无线对讲功能的预期目标.
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