The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 2008
Filed:
Feb. 19, 2003
Kim Spetzler Petersen, Hellerup, DK;
Gudmundur Bogason, Hellerup, DK;
Ulrik Kjems, Hellerup, DK;
Thomas BO Elmedyb, Hellerup, DK;
Kim Spetzler Petersen, Hellerup, DK;
Gudmundur Bogason, Hellerup, DK;
Ulrik Kjems, Hellerup, DK;
Thomas Bo Elmedyb, Hellerup, DK;
Oticon A/S, Smorum, DK;
Abstract
A device for detecting the presence of wind noise in an array of microphones including two or more separate sound inlet openings, and a sound to electrical converting element or microphone in relation to each sound inlet opening. The microphones each generate time dependent signals which are fed to a signal processing device that provides one or more output signals. The signal processing device has means for generating a time dependent cross correlation function between a first and a second microphone signal, and means for generating a signal corresponding to a time dependent auto correlation function of either the first or the second of the microphone signals. Further, the signal processing device has means for comparing the values of the auto correlation function and the cross correlation function and the means for comparing are arranged to detect the condition that the auto correlation function is substantially higher than the cross correlation function, whereby the condition is indicative of the presence of wind noise.