無線通信技術發展到今天，通信產品已經可以承載包括語音在內如數據、圖像、動畫以及多媒體等的其他業務，但語音通信仍然是最基本、最主要的通信方式。本文以MSP430F149單片機為控制核心，射頻模塊選用工作在2.4 GHz頻段的M-Power500，語音編解碼芯片則選用CMX639來搭建一針對短距離通信的、全雙工、低功耗的無線語音傳輸系統。經過測試，該系統在空曠的環境下，通信距離約200 m，該設計實現了點對點無線對講功能的預期目標。

Abstract:

?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.In 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.

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