Arraying speakers for a uniform driver field
US9640169B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2015 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Jul 2, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S7/302
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system for a noise cancellation comprises an amplifier in communication with the three or more speakers disposed in an area. A system controller produces a driver signal for each of the speakers in response to a signal from at least one microphone detecting sound in the area and communicates the driver signals to the amplifier. The amplifier drives each speaker with the driver signal produced for that speaker. In response to the driver signals, the speakers emit sound that combined produces a substantially uniform sound pressure field for a particular zone within the area. The substantially uniform sound pressure field produced by the speakers has a magnitude and phase adapted to attenuate a noise field in the area corresponding to the sound detected by the at least one microphone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.