Problems: (1) Sound travels very quick around the curve of the wall creating a disproportional amount of sound on the opposite ends of the arc. (2) Sounds that start in front of the curve gets reflected back to a focal point. The location of that focal point moves depending on where the sound is located. As a result, loud refocused echoes are created at the focal point. When heard, the sounds seem to come from a mysterious place. The effects of the curved walls are extremely strong and need to be addressed. One common mistake is over applying absorptive material to the walls. This solves the focal point problem but creates a “dead wall” problem.
Robinson, Arnold, "Trinity Restoration Inc. Theater Design" (2013). Architecture and Urban Design. 11.