Acoustic Reactance Resistance to the passage of sound through a medium, either solid, liquid or gas. It is caused by the internal and elastic properties of the medium, which allows it to absorb the sound. Acoustic Resistance Resistance to the passage of sound through a substance or medium caused by internal friction of the medium. Any rigid material that attenuates or absorbs sound. Acoustical Ceiling Coating Rough, decorative coating, sometimes called popcorn because of its appearance.
Coating is sprayed on to acoustical board to aid in the reduction of reflected sound.
Acoustical ceiling coating applied over drywall has less sound damping properties, but requires less drywall preparation than other textures, offering both time, labor and cost savings. Acoustical Cloud Acoustically reflective panels used in concert halls to control the sonic properties of the hall. Acoustical Plaster Plaster that is mixed with a sound-absorbing material. Acoustical Tiles Tiles that reduce sound within a room. Achieving soundproofing between rooms, requires installationof other materials, such as heavy drywall and insulation .