Device to improve loudspeaker enclosure duct
US6597795B1 · kind B1 · utility
3Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1998 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Nov 25, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/2826
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A waveguide for use in a loudspeaker. The waveguide is positioned within a loudspeaker enclosure and connect to a low frequency transport duct of the loudspeaker. The waveguide has a hollow body which is perforated with apertures. The body presents a high mechanical impedance to the low frequency waves increasing the duct input impedance of the loudspeaker which improves transmission of the low frequency waves to the exterior of the loudspeaker enclosure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.