Electret condenser microphone with low noise figure and method for producing the same
US10873815B2 · kind B2 · utility
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5Claims
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Assignee
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Key dates
| Filing date | Jun 24, 2019 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Jun 24, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2410/03
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electret condenser microphone with a low noise figure and a method for producing the same are disclosed. An electret variable condenser is first installed into a housing, and then an ASIC amplifier and a printed circuit board are installed into the housing. The ASIC amplifier is electrically connected to the electret variable condenser. It reduces the noise figure effectively and ensures the normal transmission of the effective sound. In particular, it ensures the stability and reliability of the ASIC amplifier during use. The process is simple, the production efficiency is high, and the processing cost is low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.