Patent · US Expired

Method of reducing voice signal interference

US6687669B1 · kind B1 · utility

58Cited by

4References

9Claims

0Family size

Inventors

Peter Schrogmeier · Hersbruck, DE
Tim Haulick · Blaubeuren, DE
Klaus Linhard · Neu-Ulm, DE

Key dates

Filing date	Nov 3, 1999
Grant date	Feb 3, 2004
Priority date	—
Expiry date	Nov 3, 2019

Classification

Technology area (CPC G)Physics
CPC primaryG10L21/0264
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

In a method for reducing interferences in a voice signal, a noise reduction method is applied to the voice signal, and spectral psychoacoustic masking is taken into account. A spectral masking curve is determined both for the input signal and the output signal of the noise reduction method. By comparing the signal portions exceeding the respective masking curve, newly-audible portions are detected in the form of interference in the output signal and subsequently damped selectively.

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