Steady-state room curves above 400-500 Hz misrepresent perceived sound quality.

Evidence

Above the transition frequency region around 400–500 Hz, as we know, two ears and a brain react very differently than an omnidirectional microphone (Figure 1.5), so the details in room curves are not reliable evidence of potential sound quality. — Toole, Floyd E, Sound reproduction- the acoustics and…, 539

Categorization

• XREF: Echoes the book’s earlier point about binaural hearing versus omnidirectional microphones (Figure 1.5) — the reason single-point measurements cannot stand in for two-eared perception.