Systems and methods for using electrostatic microphone
US9961440B2 · kind B2 · utility
3Cited by
6References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 25, 2014 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | Dec 25, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R29/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and a system for ultra-low-power acoustic sensor including a buffer transistor, which gate terminal is connected to a first terminal of a capacitive acoustic sensor, which drain terminal is connected via a load network to a power source and to an output terminal, and which source terminal is connected to the regulated current source, where the regulated current source is connected between the source terminal of the buffer transistor and a reference terminal, and where the reference terminal being connectable to a second terminal of the capacitive acoustic sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.