noise absorption

sound absorption coefficient,

a The fraction of the sound energy (incident at random angles on a surface) which is absorbed or otherwise not reflected by the surface.
References in periodicals archive ?
Contract notice: Implementation of the black noise absorption device: acoustic expertise of housing in black noise point and animation of the device
Within the engine compartment two pieces of ARPRO, totalling 58g, sit under the bonnet providing energy and noise absorption.
The combination of the blowing agent and the hot-melt com pound, at recommended high contents, makes it possible to very greatly reduce an expansion ratio and therefore a thickness of the rubber layer once the pneumatic tire is vulcanized, without affecting noise absorption properties provided by the blowing agent.
Lightweight and easy to move, when properly staggered the panels increase the perimeter-to-surface noise absorption area up to five-fold.
When porosity of the pavement is higher than 10%, pavement becomes acoustically absorbing, but good noise absorption characteristics will be achieved when the porosity is higher than 20%.
This also helped with noise absorption and provided extra protection for the pasta" said Lee Smith, Yamato's After Sales Commercial Manager.
It features new engine and exhaust mount designs, improved body rigidity and 30 percent more noise absorption materials, Tilt/telescopic-adjustable leather steering wheel and 60:40 split-folding rear seats, multi-layered paddings, dual-zone automatic climate control, rear air-con vents, full-colour Advance Drive Display within the instrument cluster, cruise control and keyless entry and start system.
Insulite provides excellent noise absorption, superior to that of number of commonly used building materials, reducing sound transmission.
Porous materials, such as wool and fibrous materials, possess excellent airborne noise absorption capability.
He followed up by attaching QuietFiber on top of the Acoustiblok to add a level of noise absorption to the project.
The finished product is a heavy duty, attractive floor surface that provides good noise absorption, particularly within the tunnels.