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DTMF for matlab, using Goertzel algorithm and some test to veryfy the different tones
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DTMF(双音多频)是用两个特定的单音频组合信号来代表数字信号的一种编码技术。两个单音的频率不同,代表的数字或实现的功能也不同。可采用8种频率代表电话机上的16个按键,10个数字键0~9和6个功能键*、#、A、B、C、D。具体的频率组合见参考书。要求:
(1) 根据键盘输入的符号,利用MATLAB产生对应的DTMF信号;(2) 分别利用FFT算法和Goertzel算法计算该DTMF信号的频谱并画出频谱图;(3) 根据频谱图确定DTMF信号所代表的符号是否和输入的符号一致。
-DTMF (
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用Goertzel算法计算两正弦波信号的相位差-Goertzel algorithm using two-phase sine wave signals
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DTMF encoder/decoder using Goertzel algorithm and Biquad filtering
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Goertzel algorithm in matlab
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Goertzel算法子程序,用于matlab子程序调用-Goertzel algorithm subroutine for matlab subroutine call
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project report about DTMF method using goertzel algorithm. Also, it analysis the difference between Goertzel and FFT
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产生、播放DTMF音频,基于Goertzel算法估计DTMF音频,完成双音多频(DTMF)信号的检测-Generating, playing DTMF tones, DTMF tones based on the estimated Goertzel algorithm to detect the completion of dual tone multi-frequency (DTMF) signal
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精确估计双音多频信号的频率
◆通过不同窗函数,画语图分析双音多频信号
◆估计各个时段的频率,频谱分辨率要求≤10Hz(含戈泽尔算法)
◆检测信号包含的电话号码信息
-Accurate estimation of the frequency of a dual tone multi frequency signal.
◆Through different window functions, the picture is drawn to analyze the dual ton
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研究DTMF信号的产生以及基于Goertzel算法的接收原理,并使用MATLAB编程实现DTMF拨号系统的信号发生及接收。-The study of the production of DTMF signal and receiving based on Goertzel algorithm principle, and USES MATLAB programming to realize the DTMF dialing and receiving signal of the system.
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