Microphone array
US10720893B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2019 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | May 22, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A microphone array is disclosed. In an embodiment a microphone array includes a power supply circuit arrangement, at least one microphone circuit and a voltage detector. The power supply arrangement includes a switched-mode power supply circuit configured to generate at least two different levels of output voltage. The at least one microphone circuit includes a microphone transducer, and audio amplifier, a switchable voltage regulator circuit supplying the amplifier. The voltage detector is configured to switch the output voltage of the voltage regulator circuit depending on the voltage supplied by the switched-mode power supply circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.