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请高手帮忙设计个单片机控制双音频接收和拨号的程序 [复制链接]

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在线cxd628
 
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只看楼主 倒序阅读 0楼 发表于: 2008-10-16
请高手帮忙设计个单片机控制双音频接收和拨号的程序,谢谢!
离线rovae
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只看该作者 1楼 发表于: 2008-10-17
Nice gifts
some people ramble for 10 minutes at lunchtime, some people send presents... i think we know who gives better gifts... heehee
i really love these lace wig naruto costume naruto cosplay human hair wigs cosplay wigs
离线BG4UVR
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11209
只看该作者 2楼 发表于: 2008-10-17
我×!见一次顶一次~
离线xcf93
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1330
只看该作者 3楼 发表于: 2008-10-18
请高手帮忙设计个单片机软解码dtmf程序,我要源程序。谢谢!
离线stuv411
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只看该作者 4楼 发表于: 2008-10-20
用户被禁言,该主题自动屏蔽!
离线ymmen
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63
只看该作者 5楼 发表于: 2008-10-29
用mcu产生dtmf的好象看到过, 解dtmf的还没有见过, 哪位高手能搞出来啊?(用软件的方法)
离线baoerji9527
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只看该作者 6楼 发表于: 2008-12-07
How to buy UGG sheepskin boots
how to buy ugg sheepskin boots?
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when buying sheepskin boots, make sure they are manufactured from quality australian merino wool. australian merino sheepskin boots are considered the best material for making sheepskin boots and it also ensures that you will be able to use them for many years. authentic wool also allows your feet to breathe and help reduce feet sweating. merino sheep skin is by and large thicker and much more durable than other kinds of sheep skin, which helps your boots keep their shape as well as resist wear and tear. by purchasing sheepskin boots made from merino wool and sheep skin, you will be guaranteed that not only will they be the most comfortable pair of sheepskin boots you'll ever own, but they will also last for a long time to come.
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离线bd3vk
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36
只看该作者 7楼 发表于: 2009-01-31
是用纯软件的?
离线BH7KQK
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3415
只看该作者 8楼 发表于: 2009-01-31
用硬件就图见得多了。用软件的话一般单片机估计只能解单音信号了。(只用一片avr m8的话)
离线bg1kk
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168
只看该作者 9楼 发表于: 2009-02-02
'
用硬件就图见得多了。用软件的话一般单片机估计只能解单音信号了。(只用一片avr m8的话)
'

有一种dft的代替算法可用来解dtmf,avr core的速度足够。关键是开发成本……
(楼主感兴趣的话可以到网上去搜索一下相关的文章,可以找到详细的算法说明)
离线小比尔/5
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2582
只看该作者 10楼 发表于: 2009-02-02
用相关就行了,没必要用dft
离线子规
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46
只看该作者 11楼 发表于: 2009-02-03
单片机软解码dtmf
网上很多pic的例子
http://www.geocities.com/constantinescuradu/content/dtmf.htm