Optimal control of noise in buildings will be achieved with a few general practices coupled with the appropriate knowledge and understanding of how sound travels through objects.
To begin with, what exactly is sound?
Sound is the oscillation of pressure transported through a medium. Such as air or water. We interpret the vibrations through the frequency in which they travel. The frequency of sound is referred to as pitch. Sound tends to move faster along denser materials. Because air is not extremely dense, the speed of sound travels at a lower rate than that of which is transmitted through steel or a table top.
With that theory in mind, that sound travels not only faster, but more easily through dense material, we can apply that concept to our homes and our offices.
There are two forms of sound. The first is structure born sound. As we mentioned, the oscillations, or vibrations travel through some medium. It could be the floorboard of the house, or the ceiling. That is why we hear someone walking a few doors down, or someone is busy vacuuming upstairs. The sound we perceive travels through the wood, or through or ceiling structures. Usually acoustical engineers and sound-cancellation specialists attempt to abate the weakest link first. The weakest link tends to be the structural form of sound.
The second kind of sound is airborne sound. That is the neighbors mower, the airplanes flying overhead, cars passing by.
What can we do if we want to “stop” sound? Let us define sound absorption. it is the capability of a surface or material to absorb sound instead of reflecting it. We use mass and space. Mass will block the airborne sound, but space will keep the sound that is traveling through our structures separate from our enclosed area. We do this using the decoupling method. The image below illustrates decoupling.
There are other factors that we take into careful consideration. We may need to sound proof the door, the air conditioning unit, the lighting fixtures, and the windows, In some projects, it is just as important to retain the sound in the room as it is to keep noise out of the room.
For more information on sound proofing contact Banker Insulation or call toll free. (505) 341-4600