There are two things I ran into recently that I am surprised to not seem to appear in mainstream bass discussions.
1. Schroeder point (hope I go the name right)
It seems there is a point in each room where soundwaves change in behavior from modal to, um, non-modal (cant remember the proper term). In most rooms it is between 150 and 200 Hz. It moves lower in bigger rooms.
The proposition is that one treats sound in the modal region differently than that other region.
2. Bass does not localize until well above 80Hz, more like 150 Hz.
If the second statement is true, how did THX arrive at 80Hz as its recommended crossover point??
