摘要 ： 介绍 丁 DSP技 术 中的双音 多频 (DTMF)技术 ．以及产生 与检测 Drl?,IF信 号 的几 种方 法 ．提 出并 详细 推导 了利 用

Gt~rtze]算法实现滤波器组的方法 及利用仿真软件对 DTMF进芋亍模拟设计的过程 ． -Abstract: D DSP technology DTMF (DTMF) technology. As well as the generation and detection Drl?, IF signals in several ways. Proposed and derived in detail the use of Gt ~ rtze] algorithm filters the method and the use of simulation software into the lines of step with the right foot DTMF analog design process.