It's official: our database of recordings with the microphone array described in a previous post is now active and can be found at http://www.irisa.fr/metiss/DEMAND/. Licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License, this is a large chunk of data - so much, we are only putting it on the website in one format, a zip file of 16 mono wav files for each environment. My preferred format would have been to post it as 16-channel wav files (easier to work with in MATLAB, provided you have loads and loads of RAM) but that decision had to be made.
The original design called for 18 recordings, but one of those was too challenging to do proper around Rennes, and two were unsatisfactory after recording. So, those will be left for v2.0. Still, this is a far more diverse set that most other databases I know of - and with more channels.
So if you're into multichannel signal processing... have at it!