From what Geoff said on another forum, here's how the Clever Little Clocks work. The CLC operates on the way we hear sound; i.e., its a sensory percetion issue as opposed to a system issue. The problem that the CLC addresses degrades our sensory perception-both sight and vision- to some degree. Of course, we're not aware of this degradation at all since we've always lived with it. You could say that the "better" sound (or video picture) was in the room all the time, but until the CLC was brought into the room you couldn't hear (see) it properly.