Brady O'Brien KC9TPA is a young ham who has been working with David Rowe VK5DGR, the creator of the open source CODEC2 low bitrate voice codec. In this TAPR talk he talks modem tech in SDR (a generalized way of saying that Gary doesn't understand it well enough to describe it).
He concludes by talking about the on-channel TDMA repeater project that David Rowe is working on using a VHF version of FreeDV and CODEC2. http://www.rowetel.com/
Oh, and that title? It refers to an iconic line in a old video game, and Brady's rip-off probably should be All Your Modem Are Belong To Us. Look it up. And check out the last 15 seconds of this show.
Radio Rating: B-. Brady has a few graphs showing signal performance of various modems, but he gives a good verbal conclusion of them. Most of the rest of his slides are 'headline' text for the topics he's discussion.