I recently created an instructable on hooking together the Android ADK, an iRobot Create, and (of course) an Android cell phone. The result is a voice-controlled robot, which you can find here. I also just uploaded the code for this project to google’s code repository. You can browse the sources here, or clone a copy using the following command:
hg clone http://adk-moto.googlecode.com/hg/ adk-moto
In future posts, I’ll walk through some of the code, explaining how the voice recognition is done, and why I structured things the way I did.
Stay tuned!
Fun with DC Circuits (and phones, and robots ...) 
can u give the android coding for speech in dtmf out
The source code is available, so you can modify it in any way you want. Cheers!