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Free-hanging absorbers used in large spaces to control echo and reverberation, improving speech intelligibility.

Combines different materials with distinct acoustic properties to target a broad range of frequencies.

Elastic materials that prevent sound transmission and reduce vibration due to their mass and flexibility.

Panels with small holes that absorb sound due to the friction between air and the panel's surface.

Thin, flexible materials that react to sound waves, able to absorb low-frequency sounds when tensioned and placed over an airspace.

Materials that change their acoustic properties in response to an external stimulus, such as temperature, electric field, or stress.

Materials that trap sound waves among fibers, converting the acoustic energy into heat.

Materials that absorb sound through viscous and thermal interaction within the pores, often used for soundproofing.

A special type of plaster designed to allow sound to pass through and be absorbed by an underlying material.

Fabrics that allow sound to pass through for absorption by a backing material, used in decorative acoustical panels.

Materials that absorb and release thermal energy during the process of melting and solidifying, affecting acoustic properties.

Materials with both viscous and elastic characteristics, good for damping vibrations that cause unwanted noise.

Bulk materials that slow sound transmission between spaces, typically used in walls and floors of buildings.

Artificial materials engineered to have properties not found in naturally occurring materials, often manipulating sound waves in unconventional ways.

Use the resonant properties of materials to absorb specific frequencies of sound, such as panel absorbers and Helmholtz resonators.

Designed to block or reflect sound waves, used along highways and in construction sites to mitigate noise pollution.

Designed to target and absorb specific frequencies based on the size of the cavity and neck.