Method for improving die area and power efficiency in high dynamic range digital microphones
US10727798B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2019 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Aug 16, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Exemplary multipath digital microphones described herein can comprise exemplary embodiments of automatic gain control and multipath digital audio signal digital signal processing chains, which allow low power and die size to be achieved as described herein, while still providing a high DR digital microphone systems. Further non-limiting embodiments can facilitate switching between multipath digital audio signal digital signal processing chains while minimizing audible artifacts associated with either the change in the gain automatic gain control amplifiers switching between multipath digital audio signal digital signal processing chains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.