Hey, . . Thanks for the input guys!
Yeah, I'm not sure how well it will work on lower frequencies. But, it might provide a small amount of baffling isolation and help a little with a low reflective ceiling, . .
Anyway, I just thought it sounded interesting, . .especially when the technique showed up in two separate Recording books. . .
However, with that said, . .these books were written in the 70's, . When all this fairly inexpensive acoustic treatment and bass absorbing panel materials, and covers were not so readily available as they are today.
So, in actuality you might get a better result with slapping a few 4x2x2 panels on the ceiling over the drums, . . compared to hanging a big ole Patio Umbrella from your ceiling . .
But still, . . it might be worth a shot, .since I just happen to have a thick giant patio umbrella in my basement, . . just collecting dust. . .
Besides, if its good enough for Bun E, . . who am I to argue!