Add Voice Control to Electronics with a Raspberry Pi and Arduino

It’s an old saying that computers aren’t really smart, because they only do what we tell them to do. But now you can actually tell your Raspberry Pi to do something smart — to take control of connected devices in your home — using only your voice. It’s not hard — you can do it easily using some open source software and a Raspberry Pi. Just add an Arduino with an infrared (IR) LED and you can tell your Roomba what to do, too.

Source (Make):
http://makezine.com/projects/use-raspberry-pi-for-voice-control/