REMEMBER CITADEL
Banned
Not just for Kinect. One of the audio engineer (Bkillian) on B3D said never underestimate the computing cost of audio in video games and that most racing games use up a whole core on the 360 to process audio. He said one programmer in a certain studio made a request for some audio stuff he would like to do in his game, but it was impossible to do, as doing it would require more than the computing power of the 360 (both cpu and gpu) to process it. So I think the audio DSP is really powerful and apparently one of the 3 custom block (sauce hehe) in the durango.
Apparently earlier Durango devkits had dual Xeons. One was there to emulate the CPU, and the other one was entirely dedicated to audio processing. Hopefully at least some of that will be dedicated to better voice recognition. Powerful voice synthesis capabilities would also enable some very interesting scenarios, but I don't think we're quite ready for dynamic synthesis that doesn't sound robotic yet.