Equalization and listener repositioning can produce nearly identical results for room modes.

Evidence

The main point of the figure is to show how very similar the waterfall plots look. Most of the small differences in both the frequency responses and the waterfalls are the result of making the measurements at different locations, with the consequent different interactions with other standing waves in the room, none of which were as consequential as the “monster” mode at 42 Hz (arrow). — Toole, Floyd E, Sound reproduction- the acoustics and…, 1629

Categorization

• XREF: Connects to Floyd Toole’s broader theme that both room treatment and EQ address the same underlying resonance; the ‘monster mode’ framing echoes earlier chapters on modal peaks.