Dual Frequency, Touch-Tone

This program is an open project, based on an example of Cleve Moler " Fourier Analysis" [1] for Dual Frequency analysis for GSM.
The features are :
1. Frequency computation of the cellphone numbers 0-9,
2. the ability to generate a Random number as simulating of calling a number composed of 10 digits, and analyse the entire signal .

The frequency analysis is based on Finite Fourier Transform (FFT),

The program still needs some enhancements.
More information can be found in the following link:
[1]:http://www.mathworks.com/moler/fourier.pdf>