David A. Jewell <[email protected]> wrote: I have been told that egg cartons, and egg carton "foam" are not really good at absorbing much level wise - the range they do absorb is good, but the amount of decibels that they absorb is very small.
True, and they are a lot more effective when backed by thick foam. Anechoic chambers are very difficult to build -- for example lighting power must be DC rather than AC. However, when the task is merely dampening an overly-reverberant room, a small amount of absorbtion has a large effect. Egg cartons have the advantage of being inexpensive and very lightweight, meaning construction requirements are minimal. _______________________________________________ post: [email protected] unsubscribe or set options at https://pegasus.memphis.edu/cgi-bin/mailman/options/horn/archive%40jab.org
