Introduction to Room Acoustics - August 28th, 2008
We are all familiar with the sound inside a room. We usually have the speakers that will generate the direct sound, but we also hear the reflections from the walls. The scenario in a home cinema environment is no different. The purpose of designing a dedicated home cinema is to manipulate these reflections because they will determine the way we perceive sound.
The room’s walls can reflect, transmit, or absorb sound. The phenomenon that would take place depends on the wall’s surface. Our architectural acoustic designs take into consideration the way we perceive sound, and combine the correct amount of absorbers, diffusers and flat surfaces. We should not forget that a home cinema is classed as a sound reproduction room, so it has to sound as neutral as possible. By determining the right room treatments, one can avoid colouration from the early reflections. The early reflections could form a comb filter, and alter the timbre of the original recording.
We offer a fully customisable room design service, which is specific to the project. The prominent room modes are usually treated with bass absorption. People believe that by placing porous absorbers in the corners, they are absorbing the modes. Modes have really high pressure in the corners; particle velocity is rather low. The preferred method here is the use of resonant absorbers.