Mini-reflections perceptually add up beyond what visual reflection analysis predicts

Evidence

If multiple mini-reflections perceptually add up to more than their visual appearance, as discussed in Section 12.4.4, this room represents perhaps the most extreme place to test the theory. Apparently, it sounds more “live” than the ETC suggests, which supports the theory. Mixers reportedly adapt to its unique ambiance and are pleased with what they hear, and the recordings created in it. It is currently being used as an Atmos immersive music control room, which is not the most demanding of formats. The listening room tends to be less of a factor as the number of channels and recorded spatial information increases. — Toole, Floyd E, Sound reproduction- the acoustics and…, 1431

Categorization

• QUESTION: The claim that diffuse mini-reflections perceptually sum beyond ETC predictions suggests perceptual integration rules psychoacousticians haven’t fully mapped yet.
• XREF: Connects to the reader’s prior material on how spatial information in more channels makes the room less of a factor — relates to immersive audio formats.