Wayne Parham Messages: 18791 Registered: January 2001
Illuminati (33rd Degree)
The problem is early reflections, and the frequency response anomalies that result.
If the sound source is acoustically close to the boundary, it's a good thing. But if not - and that's usually impossible - then the boundaries give unwanted reflections. Too close, and they give early reflections, which is the worst kind. Reflections further away just blend together to create the reverberent field.