Patent · US Active

Background noise reduction system

US7930175B2 · kind B2 · utility

8Cited by

1References

20Claims

0Family size

Assignee

Nuance Communications, Inc. · US

Inventors

Tim Haulick · Blaubeuren, DE
Martin Roessler · Ulm, DE
Klaus Haindl · Wien, AT

Key dates

Filing date	Jun 25, 2007
Grant date	Apr 19, 2011
Priority date	—
Expiry date	Feb 16, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG10L21/0208
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A noise reduction system includes a microphone configured to detect an acoustic signal. A first digitizer converts an output of the microphone into a discrete output signal. An acoustic sensor detects structure-borne noise, and a second digitizer converts an output of the acoustic sensor into a discrete acoustic noise reference signal. A noise compensation circuit processes the discrete output signal based on the discrete acoustic noise reference signal.

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