Djeuner en paix: Waves in an anechoic chamber

Like the video this simulation shows the effect of noise reflecting panels, that are often used to reduce the noise level in rooms shared by many people, or in sound studios. Here the angle of the zigzag patterns has been chosen more acute, the slope of the sides being equal to 2. To simulate a damping effect, the panels have been made refracting, with an index of refraction of 3, and a linear dissipation term. This allows part of the energy of the wave to enter the panels and dissipate. This simulation has two parts, showing the same wave with two different color codes: Wave energy: 0:00 Average wave energy (log scale): 0:57 The first part shows the energy of the wave. The second part shows the energy averaged from the beginning of the simulation up to the current time, on a logarithmic scale. Since sound waves have a high frequency, this gives a more useful representation of the noise level in the room. The boundary conditions on the left and right border are periodic (wrap-aro