Loudspeaker horn and method for controlling grating lobes in a line array of acoustic sources
US7299893B2 · kind B2 · utility
8Cited by
16References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2004 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Aug 28, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A loudspeaker horn (11) having a throat end (13) for receiving acoustic power from aligned acoustic power sources (41, 43, 45), an elongated throat (33), and a flared section (17) is provided with grating lobe mitigation fins (27, 29) that extend substantially parallel to the propagation axis of the horn from the throat end toward the mouth end of the horn's flared section. The length of the grating lobe mitigation fins is established in accordance with the degree of suppression of the grating lobes produced by the aligned acoustic power sources that is desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.