Users build out geometry of the room, adding in carpets, panels, and all other objects. Next, users define absorption coefficients of all materials across frequency bands and map them to different surfaces in the room. After this, the Sabine reverb equation can be calculated as a parametric sweep is simulated.
The room being designed in this case is a room-within-a-room. This will be useful for testing consumer devices in a setting that replicates actual use scenarios. After doing RT60 measurements in Soundcheck 19, it was decided corner bass traps would be a beneficial addition to the room. In Comsol, multiple different bass traps were simulated in different positions to determine best material, placement, and volume to reduce sound reflections in low frequencies with minimal impact in high frequencies.
By: Shannon McConnell