Two-stage audio gain circuit based on analog-to-digital conversion and audio terminal
US11973479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2021 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Aug 2, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10037
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed are a two-stage audio gain circuit based on analog-to-digital conversion and an audio terminal. The two-stage audio gain circuit includes a PGA configured to receive an analog audio signal and perform programmable gain amplification processing on the received analog audio signal; an ADC configured to convert the analog audio signal after the programmable gain amplification processing into a digital audio signal and output the digital audio signal; a first AGC gain unit configured to perform a first AGC processing on the digital audio signal and output a first gain adjustment value to the PGA, for the PGA to perform gain adjustment on the received analog audio signal; and a second AGC gain unit configured to perform a second AGC processing on the digital audio signal and output a second gain adjustment value to the PGA, for the PGA to perform gain adjustment on the received analog audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.