Sound Insulation

The usage of materials in buildings to reduce the transmission of sound between parts of the building, or between interior and exterior.

The term may also refer to the degree of effectiveness of insulating materials, as measured by the Absorption Coefficient, Impact Insulation Class, Noise Isolation Class, Noise Reduction Coefficient, Noise Reduction Factor, Sound Transmission Class, Sound Transmission Loss.

See also: Anechoic Chamber, Soundproof. Compare: Sound Shadow.