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Acoustical materials are used to control sound, whether for industrial, architectural or studio applications. Sound control possibilities include elimination, enhancement, diffusion and absorption, as well as a wide variety of custom solutions. Among the materials used for these functions are polyurethane and melamine foams, fiberglass, wood, plastic and synthetic tiles.

In studio applications, acoustical materials provide a means to prevent external sound pollution while contributing to the recording capabilities and quality of the facility. They also block a wide range of external frequencies and, in certain cases, help provide a noise-free environment. In architectural applications, specialized shapes and materials are used to enhance sound quality and separation, as well as reduce sound reverberation. Acoustical materials used in industrial applications are generally used to eliminate or drastically reduce machine and equipment noise.

Noise control materials are also used in a variety of vehicles, including aircrafts, boats and automobiles, to reduce the level of sound experienced by passengers. Barriers, tiles, screens, baffles, blankets and sheets are all used in acoustical control applications, often incorporating pyramids and other specialized shapes to assist in sound reduction and dispersion. Acoustical materials can be directly applied to facility walls and ceilings, suspended from various fixtures, or erected around a sound source. Typically, especially in architectural and studio applications, a complete acoustical solution involves a variety of materials and shapes.

Proper installation is equally important to proper selection of materials, and various consultation and installation services are also available. Materials are rated with various noise reduction capability ratings. However, these materials tend to be exceptionally absorptive, and may retain fumes, particulate and other pollutants, lowering their sound reduction capabilities.