Directional horn speaker system
US6574344B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2000 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Apr 12, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/288
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A directional speaker system includes an enclosure having an inner surface, an outer surface, an open end, and a closed end, a speaker driver directed toward the open end and mounted near the closed end of the enclosure, an in-line phase plug mounted in front of the speaker driver for manipulating the wavefront of sound waves produced by the speaker driver, and a preferably frustoconical shaped wave guide provided between the speaker driver and the open end of the speaker enclosure. A preferably annular space is provided between the enclosure and the wave guide and a plurality of openings are provided between the enclosure at the open end of the enclosure. Out-of-phase sound waves produced by the speaker driver travel into the space and exit the speaker system through the openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.