Planar speaker wiring layout
US7099488B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 2001 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Aug 24, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/047
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Trace runs for Planar Line Source Transducers (or speakers) are separated into multiple trace circuits which are electrically isolated but occupy the same area on the planar film. The separate trace runs are then driven with different electrical signals with tailored spectral content in order to achieve an overall acoustical frequency response. By having the separate trace runs occupy the same area, the line source nature of the transducer is preserved over the entire intended spectral response of the transducer and the mechanical structure is also kept simple. External spectral filtering circuits are used to pre-shape the spectral signal into each individual trace run and in most cases, the filtering components are passive and inexpensive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.