Riverbank Acoustical Laboratories Test for 3 x 3 Soundproof(er) Booth SPB33-2013 model. Test Results for VocalBoothToGo 3 x 3 Sounproofer Booth from Riverbank Acoustical Laboratories Post Views: 1,146 Acoustic Foam vs Producer’s Choice Acoustic Blankets: Comparing Cost Efficiency Tips and Tricks for Using Producer’s Choice Acoustic Sound Blankets