I Am Trying To Build A Fully F

I am trying to build a fully functioning robot that looks like a teddy bear like in the movie "AI" with Haley Joel Osmond. I currently am working on this project using a raspberry pi and and an arduino uno.

I am on the part where I need the bear to respond to my sound. but I'm not sure how to translate the sound signal coming out of the raspberry pi in order to get the arduino to move the servos.

I stumbled upon your JD robot and thought hey I could use my bears fuzzy fur and dress it on to JD and use the prebuilt software and hardware you guys provide with JD as the skeleton for the bear.