Multiple waveguide coaxial ceiling loudspeaker
US7142680B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2003 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Oct 11, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/34
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A flush mountable ceiling speaker (10) with individual coaxial waveguides (20, 22) for both the lower and high-frequency transducers (11, 12). The lower frequency radiation is combined with the sonic energy radiated by the high-frequency transducer (12) and shaped by the high-frequency waveguide (20) to create a coherent, uniformly controlled coverage pattern. The loudspeaker (10) creates a well defined sound dispersion pattern over a relatively large bandwidth, resulting in increased vocal intelligibility and more accurate reproduction of music at relatively great distances from the loudspeaker, as is particularly useful in association with high ceiling installations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.