Standing Waves

Standing waves arise when a sound source is between two parallel and reflective surfaces. At well defined frequencies, the incident sound wave at a surface will reflect back and interfere with itself causing a stationary pattern of low and high sound pressure levels. A right tricorner is the corner formed by three surfaces that are orthogonal to each other. This corner reflect sound of any frequency directly back in the direction from whence it arrived. Two right tricorners, especially if they are diagonally opposite each other, will give rise to standing waves just like parallel surfaces.


Anechoic Reverberation
Interior 11.40 m 12.45 m
Exterior 12.20 m 13.18 m




Anechoic Reverberation
Floor Wall Ceiling Floor Wall Ceiling
Interior  8.1 m2 34.2 m2 8.1 m2 10.6 m2 37.4 m2 10.9 m2
Exterior 9.3 m2 37.8 m2 9.3 m2 11.8 m2 40.9 m2 12.1 m2


  Anechoic Reverberation
Floor 0.9 m3 1.2 m3
Wall 3.1 m3 3.4 m3
Ceiling 0.9 m3 1.4 m3
Empty 4.5 m3 5.2 m3


Width Heigh Area Volume
Door 0.90 m 2.20 m 2.1 m2 0.2 m3
Window 1.60 m 1.40 m 2.2 m2 0.2 m3