Responsive automatic gain control
US11164592B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2019 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Jul 31, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G7/002
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system that performs automatic gain control (AGC) using different decay rates. The system may select a slow decay rate to track a loudness level within speech (e.g., within an utterance), improving audio quality and maintaining dynamic range for an individual voice, while selecting a fast decay rate to track the loudness level after a gap of silence (e.g., no voice activity detected for a duration of time) or during large level changes (e.g., actual speech loudness is lower than estimated speech loudness for a duration of time). This improves an accuracy of the loudness estimate and therefore a responsiveness of the automatic gain control, resulting in an improved user experience.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.