There will thus be an absorption of the bass. It will then be able to attenuate important wavelengths. The thicker the foam is, the more it will absorb equally. Thus, the more it will absorb for the same thickness. The denser the foam, the more cells it contains. Friction will transform the sound energy into heat and the sound will be attenuated. In an open-cell foam, sound will be trapped in the cells of the foam. Some thermal insulation foams therefore have no acoustic performance from a “soundproofing” or “reverberation” point of view. If there is no hole, there is no absorption. Sold as acoustic because the nature of the material allows the sound to be absorbed.Ī foam must have a structure called “open” to work. There are many way of applying sound absorption to different situations such as music studios (once soundproofed), village halls, sports halls and offices.Acoustic foam derives its effectiveness from 3 main elements :Ī foam is a basic material. However, it does not ultimately stop the sound energy within the room from travelling through the structure to a neighbouring space. Sound absorption will therefore improve the rooms overall noise volume and improve the clarity of the sound in the room. This means you require less panels in an area to achieve good results compared to lower performing foam tiles where nearly the whole surface needs to be covered to get good results.Īs a general rule of thumb we look to cover around 20- 30% of the surface area of the room. The soft material used in the panels are designed to absorb sound energy and stop this energy from bouncing around the room and reflecting off the surfaces.Ĭlass A panels like the ones at The Soundproofing Store are tested to absorb 90-100% of sound energy that hits them. They absorb the sound and stop the reflected sound travelling back into the room. This is when the ProSound room acoustic treatment systems are used. This is no different to a soundwave inside a room, it reflects and bounces off any hard surfaces, but will be absorbed by soft surfaces. You throw the balls again, only this time they hit the foam and drop to the floor stopping them from continuing to bounce, the energy from the ball has been absorbed by the foam. Now imagine the walls, floor and ceiling lined with foam. You throw them everywhere, in all directions and they continue to bounce around the room. Now imagine very bouncy basketballs being thrown around the room. Clap your hands in a room like this with hard surfaces and the sound appears to reverberate and echo around the space for ages.ĭo the same in a room with lots of soft furnishings and the reverberation is very limited and appears flat, with a very short continuation. Imagine being in a room with hard surfaces, a sports hall, or village hall for example. Essentially it helps to reduce Echo and Reverb within a space.
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