Dear sir,
I'm an Oracle Certified Java Programmer. I have both theoretical knowledge and 6 years+ hands-on experience in Java programming. Already completed 30+ applications with databases and other with various technologies. Check my portfolio for my past projects, sir (http://www.freelancer.com/u/rhkchathuranga.html).
I also done similar multi-platform real time voice capture app for GSM modems (capture voice from microphone and apply effects). I'm sure I can do this, and you will be well satisfied if you award this project to me. Please reply me with more details if you are interested on me, then I can send you a sample program, before accepting me for this project. Bid amount is negotiable. Thank you very much sir...!!