i need to design DTMF generator

[awan11]

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]

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

 

[Awarapunshee]

First Look at this Topic for DTMF generation

ENJOY!