SYSTEMS AND METHODS FOR ADJUSTING AUTOMATIC GAIN CONTROL

Automatic gain control systems disclosed herein can incorporate a confidence metric that can estimate the accuracy of gain adjustments calculated by an automatic gain control module. The confidence metric may be based on a percentage of valid audio samples in a given period of time. Based on the con...

Full description

Saved in:
Bibliographic Details
Main Authors KRISHNAMURTHY KAPIL, MERIMAA JUHA O, SONG YUCHAO, KRISHNASWAMY ARVINDH
Format Patent
LanguageEnglish
Published 12.12.2013
Subjects
BASIC ELECTRONIC CIRCUITRY
CONTROL OF AMPLIFICATION
ELECTRICITY
Online AccessGet full text

Cover

More Information
Summary:Automatic gain control systems disclosed herein can incorporate a confidence metric that can estimate the accuracy of gain adjustments calculated by an automatic gain control module. The confidence metric may be based on a percentage of valid audio samples in a given period of time. Based on the confidence metric, the AGC response may be reduced, delayed, frozen, or otherwise altered from the baseline gain adjustment. Time-averaging process may be used to estimate the input signal power level and determine an appropriate baseline gain adjustment. Additionally, weighting functions can be adjusted to prevent overestimation of the signal power.
Bibliography:Application Number: US201313800487