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Prefabricated sound attenuators rose to prominence in the late 1950s-early 1960s. [2] Several manufacturers were among the first to produce and test prefabricated sound attenuators: Koppers, [19] [20] Industrial Acoustics Company, [21] Industrial Sound Control, [22] and Elof Hansson. [19]
Meyer Sound Laboratories is an American company based in Berkeley, California that manufactures self-powered loudspeakers, multichannel audio show control systems, electroacoustic architecture, and audio analysis tools for the professional sound reinforcement, fixed installation, and sound recording industries.
In acoustics, acoustic attenuation is a measure of the energy loss of sound propagation through an acoustic transmission medium. Most media have viscosity and are therefore not ideal media. When sound propagates in such media, there is always thermal consumption of energy caused by viscosity.
Industrial application areas of thin film bulk acoustic resonators include high-frequency signal filtering (e.g. for mobile telecommunication devices), crystal replacements, energy harvesting, sensing, sound emission (e.g. in hearing aids) and as part of mechanical qubits. [3] [4] [5] [6]
A second finishing layer may also be added to create a second system of sound attenuation. [4] If the second density if less than or equal to that of the first layer, the sound attenuation of the second layer would be greater than the first and vice versa. [4] This allows for the flexibility of changing the acoustic properties of the space.
In many branches of acoustic engineering, a human listener is a final arbitrator as to whether a design is successful, for instance, whether sound localisation works in a surround sound system. "Psychoacoustics seeks to reconcile acoustical stimuli and all the scientific, objective, and physical properties that surround them, with the ...
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