The listening room’s influence on sound diminishes as channel count increases.

Evidence

The more channels that are delivering strong direct sounds the less the listening room itself matters. Put differently, above the transition/Schroeder frequency the listening room is most consequential in mono, less in stereo and even less in multichannel. — Toole, Floyd E, Sound reproduction- the acoustics and…, 860

Categorization

• XREF: Connects to the transition/Schroeder frequency concept from Chapter 5 of this book, and to the general psychoacoustic idea that multiple strong direct sounds reduce reliance on room reflections.