详细说明：利用TI 54x系列DSP编解码DTMF源程序的第三版，改进了算法，更适合移植。利用make.bat可进行编译。
文件列表:
dtmf54r3
........\ARDTMF.DOC
........\Bench.txt
........\dtmf.c
........\Dtmf.h
........\Dtmf500.cmd
........\DTMF500.MAP
........\DTMF500.OUT
........\dtmfdemo.c
........\Dtmfsub.asm
........\EVMINIT.CMD
........\Globals.inc
........\Init.c
........\Init.h
........\isrinfo.h
........\Isrs.c
........\Mmregs.c
........\Mmregs.h
........\Readme.txt
........\SIMINIT.CMD
........\Tables.inc
........\Vectors.asm
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