Algorhythmic from Aon² has been working on speech recognition with his Raspberry Pi, and has a very nice video demo of a voice-controlled robot he’s been building, with full instructions on how to get something similar working yourself. (Edit to add, 12 Jul: the arm itself is available in the UK from Maplin – it’s currently in the sale at £29.99.)
We thought this was fantastic. If this is a project you’re going to try to replicate at home, it’s worth noting that for some arcane reason, a USB webcam like the one Algorhythmic is using in the video (which, of course, contains a microphone) is often cheaper than a dedicated USB microphone on its own. Let us know how you get on!