How To Build Membrane Bass Traps (THEY WORK!)

This Video shows the basic theory about membrane bass trap, how to build them and some results for example https://amcoustics.com/tools/amroc?l=320&w=305&h=275&r60=0.6 https://gearspace.com/board/bass-traps-acoustic-panels-foam-etc/743040-tims-limp-mass-bass-absorbers.html http://www.acousticmodelling.com/8layers/multi.php http://downloads.bbc.co.uk/rd/pubs/reports/1992-10.pdf 0:00 what are membrane bass traps 1:02 some history 3:56 room modes 5:49 formulas 7:19 optional materials 9:38 calculation 14:31 the built 17:33 results 20:04 tip 20:25 more results