I would recommend testing before the fabric goes up on the wall. Use a good RTA that can give you a time-level-frequency plot, as well as standard frequency response. This will give you a good idea on what's going on regarding absorption, modal characteristics, and room/speaker response.
Well youre in Cali and Im in NJ so it stands to reason that the echo would take a while. Lets see....3,000 miles and sound travels at 700+ mph depending on atmospheric conditions...... hmmm the echo must have used a worm hole.
Actually, a good tutorial on this topic would be really nice if someone has the time. Both the theory, and the practical. Sort of a "what do I do?, and what am I looking for?" Then, of course, what to do to correct it.
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