Sound lens speaker system
US6134332A · kind A · utility
Inventor
Key dates
| Filing date | Dec 1, 1997 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Dec 1, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sound lens speaker system includes a concave sound lens, two upper frequency drivers, and a lower mid/low frequency driver. The mid/low frequency driver is oriented to fire sound waves towards the apex of the sound lens. The two high frequency drivers are positioned off axis between the mid/low frequency driver and the apex of the sound lens, and are preferably angled toward the apex of the sound lens. Sound waves from the high frequency drivers and mid/low driver are reflected by the sound lens into a downward substantially focused beam of full frequency spectrum sound. In a preferred embodiment, the sound lens has an upper parabolic portion and a coaxial lower parabolic portion defined by different parabolic equations and each having a respective focus. The high frequency drivers are preferably located along an arc through the upper focus and the mid/low frequency driver is substantially vertically aligned with the lower focus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.