I have written quite a few articles relating to acoustics but that is because there are so many different methods and products available to help you sound proof what you need to.
Another very popular method is Acoustic Foam; it has very different properties to Panels and are just as effective in their own way.
Foam panels are a way to create a controlled acoustic environment within a room, there are 3 different factors that give foam panels their effective qualities, they are:
- Air Permeability
Now do not presume that a higher density foam Ceiling Rafts is more effective than a lower density one because this is not always the way, they just work in different ways.
Unlike panels, Acoustical Foam does not have to be used in a room, a very popular use for these although u may not think it, is actually the police force, they use this method to sound proof their vans (usually riot vans, although it can be used on any). This is due to the lightweight nature and the versatility of the product.
The actual machinery used to cut the foam can be very expensive, although this method is one of the cheapest ones for sound absorption the machines can cost companies anywhere up to £140,000, this is just for one profile cutting machine. They use very advanced and expensive technology; precision is a main factor when manufacturing these as incorrect profiling can cause the product completely ineffective.