Passive directional acoustical radiating
US8351630B2 · kind B2 · utility
29Cited by
91References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2008 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Apr 30, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/2819
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An acoustic apparatus, including an acoustic driver, acoustically coupled to a pipe to radiate acoustic energy into the pipe. The pipe includes an elongated opening along at least a portion of the length of the pipe through which acoustic energy is radiated to the environment. The radiating is characterized by a volume velocity. The pipe and the opening are configured so that the volume velocity is substantially constant along the length of the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.