提出了一种对模拟语音信号进行数字化录音的方法，并将其应用于电话录音系统中。
This paper proposes a digital recording method for analogue audio signals, and applies it to a telephone recording system.
蜂窝数字分组数据（CDPD）系统是基于模拟蜂窝电话网的无线分组数据通信系统。
The cellular digital packet data(CDPD) system is a wireless packet communication system based on analog cellular telephone networks.
通过PC机与ARM仿真板的通信对本文实现的系统进行了仿真模拟实验，对可视电话的基本功能和性能进行了测试。
Simulation test is performed by communication between PC and ARM emulator to evaluate the function and performance of the video phone system.
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