Porous Absorber Calculator - Links

www.whealy.com/acoustics - Various acoustics calculators

www.bobgolds.com/Mode/RoomModes.htm - Room modes calculator

www.hometheatershack.com/roomeq - Room EQ Wizard

www.etfacoustic.com - Room analysis software

www.irishacoustics.com/index.php/acoustics/acoustic-resources - Wall bounce calculator