This application note describes how to decode standard DTMF tones using the minimum number of external discrete components and a PIC. The two examples use a PIC which has an 8 bit timer and either a comparator or an ADC, although it can be modified for use on a PIC which has only digital I/O. The Appendices have example code for the 16C662 (with comparator) and 16F877 (using the ADC).
As the majority of the Digital Signal Processing is done in software, little is required in the way of external signal conditioning. Software techniques are used to model the individual elements of a DTMF Decoder IC.
资源简介：This application note describes how to decode standard DTMF tones using the minimum number of external discrete components and a PIC. The two examples use a PIC which has an 8 bit timer and either a comparator or an ADC, although it can be ...
上传时间： 2013-11-21
上传用户：zhaoke2005
资源简介：·DTMF Decoding with a PIC16xxx
上传时间： 2013-04-24
上传用户：youlongjian0
资源简介：·详细说明：DTMF软解码实现方法,英文的,但算法好,节约您的开发成本.文件列表: 试验DTMF软解码 ..............\DTMF Decoding with a PIC16xxx.doc ..............\试验DTMF软解码 ..............\..............\Form1.frm
上传时间： 2013-04-24
上传用户：20160811
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上传时间： 2013-07-12
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