reverberate in certain acoustic configurations This is a very important point. Low frequency noises can have a wavelength exactly the size of common rooms, yie

reverberate in certain acoustic configurations This is a very important point. Low frequency noises can have a wavelength exactly the size of common rooms, yielding an unbearable amplification as the waves gang up with common peaks and troughs. http://www.bobgolds.com/Mode/RoomModes.htm http://www.bobgolds.com/Mode/RoomModes.htm