双音频DTMF技术在DSP系统中的实现
ELECTRONIC PRODUCTS CHINA(2003)
Abstract
双音多频DTMF(Dual Tone Multi-Frequency)信令在全世界范围内得到广泛应用,将DTMF信令的产生与检测集成到含有数字信号处理器(DSP)的系统中,是一项较有价值的工程应用.本文给出一种成功的实现方案:首先阐述DTMF信令的产生与检测的基本原理,然后给出在TI公司定点DSP芯片TMS320C54x系列中的实现方案,最后作了实现方案的性能分析.
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