Title:
ANALOG-TO-DIGITAL CONVERSION-BASED TWO-STAGE AUDIO GAIN CIRCUIT AND AUDIO TERMINAL
Document Type and Number:
WIPO Patent Application WO/2020/221028
Kind Code:
A1
Abstract:
An analog-to-digital conversion-based two-stage audio gain circuit and an audio terminal. The analog-to-digital conversion-based two-stage audio gain circuit comprises: a programmable gain amplifier (PGA) unit (100) for receiving an analog audio signal and performing a programable gain amplification with respect to the received analog audio signal; an analog-to-digital conversion unit (200) for converting the analog audio signal having undergone the programmable gain amplification into a digital audio signal and outputting same; a first AGC gain unit (300) for performing a primary AGC processing with respect to the digital audio signal and outputting a first gain adjustment value, thus allowing the PGA unit (100) to perform a gain adjustment with respect to the received analog audio signal; and a second AGC gain unit (400) for performing a secondary AGC processing with respect to the digital audio signal and outputting a second gain adjustment value, thus allowing the PGA unit (100) to perform a gain adjustment with respect to the received analog audio signal.
Inventors:
ZHANG LIUAN (CN)
TAN YULIN (CN)
DUSTER JON SWEAT (US)
ZHANG NING (CN)
FENG HAIGANG (CN)
ALPMAN ERKAN (US)
TAN YULIN (CN)
DUSTER JON SWEAT (US)
ZHANG NING (CN)
FENG HAIGANG (CN)
ALPMAN ERKAN (US)
Application Number:
PCT/CN2020/085387
Publication Date:
November 05, 2020
Filing Date:
April 17, 2020
Export Citation:
Assignee:
RADIAWAVE TECH CO LTD (CN)
International Classes:
H03G3/30
Foreign References:
| CN110113019A | 2019-08-09 | |||
| CN1700603A | 2005-11-23 | |||
| CN104242847A | 2014-12-24 | |||
| CN201600893U | 2010-10-06 | |||
| US20150358187A1 | 2015-12-10 |
Attorney, Agent or Firm:
CENFO INTELLECTUAL PROPERTY AGENCY (CN)
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