Extron Glossary of Terms


Room mode - An acoustical resonance in a room caused by parallel wall surfaces. Any set of parallel walls will establish a series of standing waves, the lowest one of which has the wall spacing as a half-wavelength. These sound waves interfere with one another to produce a series of places where the SPL is high and another series of places between then where the SPL is very low. It is as if the sound wave were stationary between the two surfaces.