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
资源简介：自动检测技术 上海电机学院精品课件 PPT版 (New)
上传时间： 2013-07-12
上传用户：eeworm
资源简介：Express DSP compliant C55x DTMF detector software is proposed in two versions: one with a 5 ms frame size and one with a 10 ms frame size. The versions are quite similar in behavior. The version with a 10 ms frame size is faster, but the ...
上传时间： 2016-02-15
上传用户：liuchee
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上传时间： 2015-02-08
上传用户：fanboynet
资源简介：vs.lib is a math library in C++ with a set of linear algebra and integrable / differentiable objects. vs.lib is a rapid-proto-typing tool which makes programming in numerical applications as easy as writing mathematical expressions.
上传时间： 2015-03-03
上传用户：PresidentHuang
资源简介：The CC1000 RF transceiver is very easy to interface with a microcontroller. The chip is configured using a three-wire bus, comprising of PCLK, PDATA and PALE signals.
上传时间： 2014-01-04
上传用户：c12228
资源简介：卷积码编码和维特比解码 当K为7 时 供大家参考Convolutional encoding and Viterbi decoding with k 7 rate 1 2
上传时间： 2013-12-22
上传用户：zjf3110
资源简介：DataBase keeping program explaining with a sample program a) Ranking Database. b) Library keeping. c) Record Keeping.
上传时间： 2015-04-16
上传用户：sclyutian
