Hearing aid with improved localization

US9338561B2 · kind B2 · utility

Assignee

• GN RESOUND A/S · DK

Inventors

• Karl-Fredrik Johan Gran · Malmö, SE
• Guilin Ma · Avenue Madeleine, DK

Key dates

• Filing date: Apr 29, 2013
• Grant date: May 10, 2016
• Expiry date: Jul 30, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04S2420/01
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A method of determining parameters of a BTE hearing aid having at least one ITE microphone and at least one BTE microphone, the method includes: determining Head-Related Transfer functions HRTFl(ƒ); determining a hearing aid related transfer function Hl,iITEC(ƒ) of a ith microphone of the at least one ITE microphone for direction l; determining a hearing aid related transfer functions Hl,jBTEC(ƒ) of a jth microphone of the at least one BTE microphone; determining transfer functions GiIEC(ƒ) of a ith cue filter of at least one cue filter filtering audio sound signals of the at least one ITE microphone; and determining transfer functions GjBTEC(ƒ) of a jth cue filter of the at least one cue filter filtering audio sound signals of the at least one BTE microphone; wherein the transfer functions GiIEC(ƒ) and the transfer functions GjBTEC(ƒ) are determined using a processing unit based on equation:minG(ƒ),G(ƒ)Σl=0L-1W(l)∥W(ƒ)HRTFl(ƒ)−ΣiGiIEC(ƒ)Hl,iIEC(ƒ)−ΣjGjBTEC(ƒ)Hl,jBTEC(ƒ))∥p.