【摘要】 ＤＴＭＦ信号是音频电话中的拨号信号，广泛应用于新一代电话机。本文介绍一种基于ＴＭＳ３２０Ｃ５４Ｘ系列ＤＳＰ芯片的ＤＴＭＦ信号的检测，解决了以往所用方法的不足之处，使得ＤＴＭＦ信号检测变得准确、迅速和灵活，从而可能实现多种的电信增值的服务。更多还原

【Abstract】 DTMF signal used as dialing signal in tone telephone applied in many new field widely.A new method to detect DTMF signal based on TI Company new DSP product-TMS320C54X is introduced in this article.This new method has many advantages. We can detect DTMF signal correctly quickly and easily in this way. It made it possible to develop manifold new telecommunication services.更多还原