Patent · US Active

Method and device for noise suppression in a decoded audio signal

US8612236B2 · kind B2 · utility

0Cited by

11References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Martin Gärtner · Worms, DE
Stefan Schandl · Wien, AT

Key dates

Filing date	Apr 12, 2006
Grant date	Dec 17, 2013
Priority date	—
Expiry date	May 25, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG10L21/0364
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

In one aspect, a noise suppression process for a decoded signal comprising a first decoded signal portion and a second decoded signal portion is provided. A first energy envelope generating curve and a second energy envelope generating curve of the first signal portion and of the second decoded signal portion are determined. An identification number depending on a comparison of the first and second energy envelope generating curves is formed. An amplification factor which depends on the identification number is derived. Multiplying the second decoded signal portion by the amplification factor, reduces pre-echo and post-echo interference noises.

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