This paper analyzes and proves the anti-noise capability of dual tone multi-frequency signals,takes the example of special MT8888 chip to design and realize the way of transmitting signals by dual tone multi-frequency technique.

• 本文分析、论证了双音复频信号具有抵御环境噪声的能力,并且以双音复频专用芯片MT8888为例,设计、实现了利用双音复频技术进行信号传输的方法。