I know that people are already doing this on Arduino.

Do you know where could I find some info about that??

Thanks

Have you tried this using Arduino?? I'm really interesting in this kind of projects, maybe we could help eachother.

Ok, Instead using netduino, like @devilfisch propose, I would use Arduino Duemilanove in order to work with an udio signal that comes from this microcrontoller that also comes from a sensor connected to it. Thats why I thought you used a FSK modem to work with that kind of audio signals.

Thank you, anyway.

Alberto, I am sorry to answer you so in late.

There's no any project involving the FSK at the moment...I may help you, if you need. However, I don't see any common point with your project (Android and Arduino) with Netduino.
What do you expect from this forum?

Hi everyone, I'm Alberto a student from Spain, who is working on his Final Project as Telecommunication Engineering. This is my blog where i explain what i'm doing and what are my objectives. http://androino.blogspot.com/ If you look at Project Description, you can see that my project will need to use something quite similar to what you are talking about. I found this blog while I was looking for some information about the technologies used nowadays. I would like to keep in touch and listen to all the suggestion you can make in order to improve my project. Thank you very much, I’m looking forward to hearing from you. I also encourage to create your own blog where all your improvements can be analyzed .