Reflected sound fields cannot be corrected by electronic equalization alone

Evidence

In-room measurements that display events in the time domain can be used to identify potential problem reflections, but these non-minimum-phase phenomena (the reflected sounds arrive from many directions at many times) can only be manipulated by sound absorbers or diffusers. It is essential to know what needs to be corrected, how it should be corrected, and what should simply be left alone. — Toole, Floyd E, Sound reproduction- the acoustics and…, 122

Categorization

• DEFINE: Defines non-minimum-phase phenomena as reflections arriving from many directions at many times, explaining why EQ can’t fix them.