Hello All, I have looked around and I can't seem to find a touch tone encoder for gnuradio. The beginner tutorial adding two sin waves to create a dial tone made me want to play with dial tone, busy tone, and phone number key presses, etc. All the frequencies are available on wikipedia, but I have not been able to put the logic together in gnuradio. I am looking at a simple 16 button keypad, that when a key is pressed it adds the two sin waves together. I have made a hack that I am attaching to this email where I can select two radio buttons and make a tone that way.
I was wondering if anyone had some pointers on how to change the current design to a keypad based one with say QT GUI Push Button instead of the QT GUI Chooser radio button one I have. This project has no practical application other than to entertain me and to teach me gnuradio, so don't stop important work to respond to this. (Unless you want to ;) Thanks to all the developers for their work in making such an interesting piece of software. Chris
dtmf.grc
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