Air-coupled surface wave structures for sound field...

Details Air-coupled surface wave structures for sound field... Air-coupled surface wave structures for sound field...

G - Physics

10

K

G10K 11/36 (2006.01) G10K 11/00 (2006.01) G10K 11/26 (2006.01)

Patent

CA 2328265

.gamma. A surface wave apparatus is disclosed having reduced sound attenuation across a surface along a known path having a path distance when compared to sound attenuation along a same path distance through air. The surface wave apparatus includes a plurality of cells defining a first surface. Sound presented at the first surface forms a surface wave over the surface and proximate thereto. Each cell includes four bounding walls and a bottom. Two of the bounding walls act to guide the sound within the known path and two are disposed across the known path to form a structure supporting formation of surface waves.

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