Acoustic Properties of Masonry , Concrete or Stone Materials
Mass and rigidity property are the two factors that make a material to be highly noise resistant. The concrete wall is highly efficient than masonry. Masonry material made floor or wall do perform appreciably.
Massive materials like stone , concrete can stop high sound waves that are less resistant to less massive materials. Concrete slabs do perform good in the sound insulation activity.
Acoustic Properties of Wood and Related Products
These are less dense than masonry. They have a smaller performance in sound isolation. MDF woods are more massive that are added to certain interior walls to increase the massiveness. The most common material plywood , which is used in multilayer in interiors , to make it sound proof.
Mainly wood is used in rooms where perfect sounding is required. It can reflect sound which can be considered as an important property for sound treatment. It resonates easily which promotes absorption of sound , some of which pass through the material and some reflects. Therefore , these are used in making of instruments.
Acoustic Properties of Steel
Based on performance and structure , steel is one of the best material for sound insulation. Because of high cost , it has less application. It is highly dense and massive in nature.
Steel carries the sound through vibration within the material. This sound transfer is called as the structure-borne vibration. The normal case is airborne vibration which is not appreciable.
Acoustic Properties of Glass & Transparent Materials
The glass is massive in nature. There is a new development of absorptive glass-like materials that have the property to absorb more sound waves instead of reflecting. The material is made from Plexiglas or transparent foil thinner in nature with tiny holes. Their application comes in sound studios.