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单音多频信号的产生和识别,采用FFT变换。应用于电话拨号。是学习数字信号处理的大作业。-Tone multi-frequency signal generation and recognition, the use of FFT transform. Applies to telephone dial-up. Digital Signal Processing is the study of large operations.
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This application note describes the implementation of a dual tone multiple frequency (DTMF)tone generator and detector for the TMS320C54x . This application note provides some theoretical background on the algorithms used for tone generation a
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This application report describes the implementation of a dual-tone multiple
frequency (DTMF) tone generator and detector. The author provides some theoretical background on the algorithms used for tone generation and detection, and documents the a
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Using the 25 MIPS CPU and on-chip ADC, the C8051F300 can perform DTMF tone generation and decoding.
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此文档是DTMF信号的产生与识别仿真实验,实现双音多频信号的检测,对数字信号处理方面的理解很有帮助。欢迎下载-This document is a DTMF signal generation and recognition of simulation, dual tone multi-frequency signal detection, digital signal processing on the understanding helpful. Welcome to download
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dtmf tone generation pdf
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DTMF(双音多频)信号的产生和检测
1、程序分两部分,前半部分为DTMF 产生,后半部分为DTMF 检测。
2、DTMF 产生中用数组in设定键值,数组长度为16,范围0~15,可人工改写;
3、数组xr为产生的行频信号,长度为102,32位浮点型;
数组xc为产生的列频信号,长度为102,32位浮点型;
数组x为产生的双音频信号,长度102点,32位浮点型;
4、数组z为DTMF检测中能量模板 ,以完成按键的行位置及列位置检测;
6、变量outkeycol
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DTMF(Dual Tone Multi Frequency)信号是音频电话的拨号信号。由美国AT&T贝尔实验室研制, 双音多频信号编码技术易于识别,抗干扰能力强,发号速度快,且比用modem进行远程传输的方法更为经济实用,因此这种拨号方法取代了传统的脉冲拨号。
电话中的双音多频信号有两种用途:一是用于双音多频信号的拨号,去控制交换机接通被叫的用户电话机;二是利用双音多频信号遥控电话机各种动作,如播放留言,语音信箱。这些都离不开DTMF信号的产生。
有详细的需求分析 功能说明 流程图及代
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matlab dtmf 双音多频信号产生与检测 正确 -matlab dtmf dual tone multi-frequency signal generation and detection correctly
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基于MATLAB的双音多频(DTMF)信号的产生、接收以及可视化拨号系统的实现-MATLAB-based dual-tone multi-frequency generation (DTMF) signals, the receiver and dial visualization system
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dtmf generation whit pic mico chip
languge ccs compiler pwm tone
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这是一个DTMF双频拨号信号的生成和检测程序,能够根据输入的电话拨号音检测出号码,并且可以在拨号音中加入噪声和单频干扰-This is the generation and detection program a dual DTMF dialing signals can be detected according to the telephone dial tone number input, and can be added to single-frequency noise and int
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