Electrostatic electroacoustic transducers
US8081784B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2007 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Oct 19, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R19/013
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electrostatic electroacoustic device comprising a first electrode configured to receive an audio signal, a first conductive film configured to receive the audio signal, a first electret between the first electrode and the first conductive film, the first electret being capable of vibratory motion relative to the first electrode based on the audio signal, a second electrode configured to receive the audio signal, a second conductive film configured to receive the audio signal, the second conductive film being electrically isolated from the first conductive film, and a second electret between the second electrode and the second conductive film, the second electret being capable of vibratory motion relative to the second electrode based on the audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.