Patent · US Expired

Speech coding with comfort noise variability feature for increased fidelity

US7124079B1 · kind B1 · utility

37Cited by

6References

22Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Ingemar Johansson · Luleå, SE
Erik Ekudden · Stockholm, SE
Roar Hagen · Stockholm, SE

Key dates

Filing date	Sep 8, 1999
Grant date	Oct 17, 2006
Priority date	—
Expiry date	Sep 8, 2019

Classification

Technology area (CPC G)Physics
CPC primaryG10L19/012
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The quality of comfort noise generated by a speech decoder during non-speech periods is improved by modifying comfort noise parameter values normally used to generate the comfort noise. The comfort noise parameter values are modified in response to variability information associated with a background noise parameter. The modified comfort noise parameter values are then used to generate the comfort noise.

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