Acoustically asymmetric bandpass loudspeaker with multiple acoustic filters
US6389146B1 · kind B1 · utility
59Cited by
15References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2000 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Feb 17, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/2849
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a preferred embodiment, a bandpass loudspeaker enclosure includes three sub chambers, a first one being a non-Helmholtz-reflex chamber of a sealed acoustic suspension construction, and the remaining two chambers utilizing two passive acoustic radiators to achieve two Helmholtz-reflex vent tunings and a multiple of low pass acoustic filters that provide an acoustic bandpass with a substantially 2nd order high pass characteristic combined with an extended, steeper, at least 4th order slope low pass stop band characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.