| 摘要 |
A noise barrier and sound absorption panel system (10) is disclosed. The panel has three layers (11, 12, and 13), the outer two layers (11, 13) comprising a dense, load bearing material such as concrete and the inner layer (12) comprising a foam, sound absorbing material. The noise-facing outside layer (16) defines a series of generally cone-shaped passageways (14) which extend through the layer (11) to expose the sound absorbing material (12) in the center of the panel. The passageways (14) allow a large amount of unwanted noise to be "funneled" into the sound absorbing material (12) while letting only a minimum amount of sound waves escape from the center layer (12) after reflection. |
