![]() ![]() Size and shape can influence the sound wave's behavior if they interact with its wavelength, giving rise to wave phenomena such as standing waves and diffraction.Īcoustic absorption is of particular interest in soundproofing. The fraction of sound absorbed is governed by the acoustic impedances of both media and is a function of frequency and the incident angle. Similar attenuation mechanisms apply for the air and any other medium through which sound travels. Deformation causes mechanical losses via conversion of part of the sound energy into heat, resulting in acoustic attenuation, mostly due to the wall's viscosity. Just as the acoustic energy was transmitted through the air as pressure differentials (or deformations), the acoustic energy travels through the material which makes up the wall in the same manner. When sound from a loudspeaker collides with the walls of a room part of the sound's energy is reflected, part is transmitted, and part is absorbed into the walls. The energy transformed into heat is said to have been 'lost'. Part of the absorbed energy is transformed into heat and part is transmitted through the absorbing body. JSTOR ( May 2017) ( Learn how and when to remove this template message)Īcoustic absorption refers to the process by which a material, structure, or object takes in sound energy when sound waves are encountered, as opposed to reflecting the energy.Unsourced material may be challenged and removed.įind sources: "Absorption" acoustics – news Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification. ![]()
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