U.S. patent 7027603: Ear level noise rejection voice pickup method and apparatus. Granted to Taenzer on 2006-04-11 (filed 2003-02-21) and assigned to GN Resound North America Corporation. Currently involved in at least 1 patent litigation: GN Resound A/S v. Callpod, Inc. (California). See http://news.priorsmart.com for more info.
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