无绳集团电话双音多频DTMF信号的实现

A Method on Generating Dual Tone Multiple Frequency Signal of Cordless Group Phone

介绍了在无绳集团电话研制中所采用的双音多频ＤＴＭＦ信号的一种实现方法，通过软件模拟不同的单音频率，并对其按一定的采样速率取样、叠加即得到相应的双音多频ＤＴＭＦ信号．同时讨论了实现的原理及软、硬件设计，并对结果进行了分析．

This paper presents a method to generate the signal of dual tone multiple frequency in the development of the cordless group phone. The single-tone waves are generated by the way of software simulation, then they are sampled at proper speed and overlapped to form the signal of dual tone multiple frequency.The paper also discusses the theory,the design of hardware and software.Finally,the analyzing of resultS is given.