Acoustic transducer
US9930446B2 · kind B2 · utility
0Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2015 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Jan 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosure generally relates to acoustic transducers with stationary and moving coils, and methods for operating the acoustic transducers. Time varying signals are applied to the moving and stationary coils to control the movement of a diaphragm, which produces sound. The time varying signals are derived from a composite signal that is provided, via a pair of conductors, to the acoustic transducer. The time varying signals are derived based on various filter methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.