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i need to design DTMF generator

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awan11

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dtmf generator keypad

is it easy to design DTMF generator,how much time wil it take.how should i proceed in making it.i hv its generation code in matlab.how wil i interface tha.whyt is the cost if i make it.
 

sabeti_1990

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hi
U have 2 way
1-analog :use htm9102 or else it make tone code with a 4*4 telephoni keypad
2- digital: use avr application note for tone encoder in
www.atmel.com
 

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