Patent · US Active

Efficient audio signal processing in the sub-band regime

US8320575B2 · kind B2 · utility

14Cited by

4References

10Claims

0Family size

Assignee

Nuance Communications, Inc. · US

Inventors

Gerhard Uwe Schmidt · Ulm, DE
Hans-Jörg Köpf · Ulm, DE
Günther Wirsching · Annaberg-Buchholz, DE

Key dates

Filing date	Sep 30, 2008
Grant date	Nov 27, 2012
Priority date	—
Expiry date	Apr 14, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG10L2021/02082
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A signal processing system enhances an audio signal. The audio signal is divided into audio sub-band signals. Some audio sub-band signals are excised. Other audio sub-band signals are processed to obtain enhanced audio sub-band signals. At least a portion of the excised audio sub-band signals are reconstructed. The reconstructed audio sub-band signals are synthesized with the enhanced audio sub-band signals to form an enhanced audio signal.

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