RealTraps has announced the new educational video All About Diffusion as the latest release in their "See and Hear" video lecture series. Most people have no way to hear what diffusors do or how they sound in a room. So this video explains diffusion in plain terms with no math, then lets you hear an acoustic guitar recorded in close proximity to five different surface types - a QRD diffusor, a poly diffusor, absorption, a bare wall, and a typical bookcase. The video is 16x9 wide-screen, and the audio is at 256 kbps for highly accurate sound. It's listed about halfway down on the RealTraps Videos page.