DTMF信号的MATLAB设计  

MATLAB Design of DTMF Signal

作　　者：景文芳 JING Wenfang(Sichuan Gongshang University,Chengdu 610000,China)

机构地区：[1]四川工商学院,四川成都610000

出　　处：《通信与信息技术》2022年第S01期17-18,72,共3页Communication & Information Technology

基　　金：2021年四川工商学院教育教学改革(批准号:2021JYJXGG01)资助的课题。

摘　　要：基于一种DTMF双音多频信号的实现方案,主要阐述DTMF双音多频信号的产生和检测原理以及如何在MATLAB上产生DTMF双音多频信号,并用GOERTZE算法提取频谱分析,然后利用GOERTZE算法在自然噪声的环境下对输入的DTMF双音多频信号提取频谱信息,根据提取的频谱信息对输入信号进行检测解码,完成对DTMF双音多频信号的检测与识别。最后通过GUI仿真界面实现DTMF双音多频信号拨号系统的拨号、傅里叶变化、声音识别、信号识别与检测以及AM调制解调功能。This paper presents a realization scheme of DTMF dual tone multi frequency signal.It mainly describes the principle of DTMF dual tone multi frequency signal generation and detection,and how to generate DTMF dual tone multi frequency signal in MATLAB,and extracts spectrum analysis by goertze algorithm,then extracts the spectrum information from the input DTMF dual tone multi frequency signal in the environment of natural noise by goertze algorithm,and extracts the spectrum information according to the extracted spectrum signal the input signal is detected and decoded,and the DTMF dual tone multi frequency signal is detected and recognized.Finally,the dialing,Fourier change,sound recognition,signal recognition and detection and am modulation and demodulation functions of DTMF dialing system are realized through GUI simulation interface.

关 键 词：DTMF GOERTZE算法 GUI 检测解码 

分 类 号：TN91[电子电信—通信与信息系统]