Other than the head-liner in muh car."
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Recording studios frequently use fabric on the ceiling to hide acoustic treatments, especially home studios.
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Echo killer
++++++ Sort of. It reduces floor to ceiling reflections and overall reverberation. (Mr G is a studio designer)
Audio engineers like echo and reverb but when its controlled
so the acoustically “dead” room is the ideal. I have drop ceiling in basement that fabric would be nice to have just for the looks