How to write a DTMF generator in Matlab?

[ahmad_abdulghany]

Hello
How can i write a matlab code ( including difference equations ) to generate a DTMF signals
Please feed back help
Thanks in advance
Ahmad

 

[Jack// ani]

matlab dtmf generator

Just get enough samples two sine waves.....sum them up and send it to the soundcard. You will hear DTMF tones. Look in the demo....files, one example nicely explains it.

Good luck

 

[ahmad_abdulghany]

demo dtmf

Just get enough samples two sine waves.....sum them up and send it to the soundcard. You will hear DTMF tones. Look in the demo....files, one example nicely explains it.

Good luck

thanks for reply
Can you please give difference equation or submit Matlab .m file that do this?
Thanks in advance

 

[echo47]

dtmf generator matlab code

The MATLAB Signal Processing Toolbox includes a DTMF generation/detection demo. Click Help, Demos, Toolboxes, Signal Processing, Transforms, Dual-Tone Multi-Frequency (DTMF) Signal Detection.

Or search MathWorks web site, and you'll find the same demo:
**broken link removed**