双音多频信号的实时数字滤波译码

Real-Time Digital Filter and Decoding of Dual Tone Multifrequency Signal

提出以ＴＭＳ３２０１０数字信号处理器为核心构成数字滤波电路，它包含硬件设计和软件设计两个部分，可以用于对多频互控信号及双音多频信号进行快速接收译码．

A digital filter circuit based on TMS32010 DSP processor is presented in thispaper. It consists of hardware and software. MFC and DTMF signal can be received and decoded quickly with the circuit.