Patent · US Active

System and method for extending spectral bandwidth of an audio signal

US7756714B2 · kind B2 · utility

4Cited by

2References

14Claims

0Family size

Assignee

Nuance Communications, Inc. · US

Inventors

Bernd Iser · Ulm, DE
Gerhard Uwe Schmidt · Ulm, DE

Key dates

Filing date	Jan 31, 2007
Grant date	Jul 13, 2010
Priority date	—
Expiry date	May 2, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG10L21/038
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A system is provided for extending the spectral bandwidth of a bandwidth limited audio signal by applying a nonlinear function to the bandwidth limited speech signal to generate the low frequency audio signal components that were attenuated in the bandwidth limited audio signal.

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