The Software Generation and the Comparison of Decoding Approach of DTMF Signal

被引：0
|
作者：
Song, Yongbao [1 ]
Sun, Wei [1 ]
Zhang, Liankun [2 ]
Liu, Mingming [1 ]
机构：
[1] China Univ Min & Technol, Sch Informat & Elect Engn, Xuzhou 221116, Peoples R China
[2] China Univ Min & Technol, Sch Mines, Xuzhou 221116, Peoples R China
来源：
2010 CHINESE CONTROL AND DECISION CONFERENCE, VOLS 1-5 | 2010年
关键词：
DTMF; FFT; Goertzel Algorithm; NDFT;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Dual-tone multi-frequency signal has been widely used in the modem communication systems. This paper gives a detailed analysis of the characteristics of the dual-tone multi-frequency signal and the method of analyzing the dual-tone multi-frequency signal by software. Using Mat lab this paper analyses the dual-tone multi-frequency signal, designs a graphical interface imitating telephone using GUI toolbox, generates the DTMF signal through sine wave superposition, introduces the three frequency domain decoding approach, FFT, Goertzel Algorithm, improved Goertzel Algorithm based on NDFT, and gives the results of simulation of the three algorithms, in the end, analyses the advantages and disadvantages of the three algorithms, compares the effectiveness and complexity of the three algorithms. The study of this paper supplies a software application without hardware for studying digital signal processing.
引用
收藏
页码：1054 / +
页数：2
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