GSM simluation in octave (Score 1)

Just FYI, I did a little experiment to try to model the GSM interference using my Motorola phone, a small antenna, and a scope. I then built a model in octave which generates a wav file that sounds similar to the interference from the GSM data packaets. The code and wav file can be found here: http://www.pldr.org/?page_id=161