Patent · US Active

System and method for performing automatic gain control in mobile phone environments

US8639294B2 · kind B2 · utility

0Cited by

9References

20Claims

0Family size

Assignee

Audyssey Laboratories, Inc. · US

Inventors

Sunil Bharitkar · Los Angeles, US
Nathan Dahlin · Los Angeles, US
Ismael H. Nawfal · Redondo Beach, US

Key dates

Filing date	May 1, 2012
Grant date	Jan 28, 2014
Priority date	—
Expiry date	Aug 22, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH03G3/3005
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A Dynamic Noise Compensation (DNC) telephone speech enhancement algorithm addresses the issue of environment noise on the listener end of a telephone call. A single microphone proximal to the listener provides a sample of near end ambient noise level and of near end speech. A Voice Activity Detector (VAD) detects the presence of near end (listener) speech. The DNC algorithm adjusts the far end incoming speech level based on the near end ambient noise and the VAD ensures that the near end listener speech does not effect the incoming speech level adjustment.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.