Where is the post with explanations of DSPs?

Someone had a good post about all the DSPs such as Dolby II etc. It had detailes about which DSP to use in what situation. I have searched & searched & cannot find it. Anybody know where it's hiding?

There's one on the News and Rumors board. Here't the link to the one I'm referencing:
http://forums.audioreview.com/news-rumors/pro-logic-iix-dpl-ii-dpl-dts-es-dd-ex-other-formats-digrams-4222.html

Thats it! Thanks poneal! I saved that one.