Patent · US Active

Detection and suppression of wind noise in microphone signals

US8194881B2 · kind B2 · utility

15Cited by

4References

21Claims

0Family size

Assignee

Nuance Communications, Inc. · US

Inventors

Tim Haulick · Blaubeuren, DE
Markus Buck · Biberach, DE
Phillip A. Hetherington · Port Moody, CA
Klaus Haindl · Wien, AT

Key dates

Filing date	Oct 26, 2007
Grant date	Jun 5, 2012
Priority date	—
Expiry date	Dec 9, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2499/13
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

To reliably and consistently detect desirable sounds, a system detects the presence of wind noise based on the power levels of audio signals. A first transducer detects sound originating from a first direction and a second transducer detects sound originating from a second direction. The power levels of the sound are compared. When the power level of the sound received from the second transducer is less than the power level of the sound received from the first transducer by a predetermined value, wind noise may be present. A signal processor may generate an output from one or a combination of the audio signals, based on a wind noise detection.

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