Sound focus speaker of gas-filled sound lens attachment type
US7204342B2 · kind B2 · utility
1Cited by
11References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2003 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Apr 19, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R23/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sound focus speaker adopting a gas-filled sound lens enhances efficiency of transferring sound from a source to target area and of protecting a spread of transferred sound. The sound focus speaker includes a gas-filled sound lens, sound sources for generating sound and a sound-absorption room for surrounding the sound lens and the sound sources. Sound emitted from the sound focus speaker is focused at specific distance to make a focus point and not spread to the outer of the focus point from forming a sound area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.