dtmf matlab please help

[trinetra31]

Hi i nedd to do dtmf coding in c,
i have been looking but still havent found it,
so now i am aslo considering matlab.
Can some one pls provide me or with those coding?
Thanks,
Trinetra.

 

[hariharan.gk]

Creating the DTMF tones should be pretty straight forward, define all row and column frequencies and row frequencies, generate tones using sin function , based on the number mix the corresponding two sine tones.

Goertzel algorithm - Wikipedia, the free encyclopedia

You can also use Goertzel to generate/filter tones.