Invention Grant
- Patent Title: Hearing aid comprising adaptive feedback suppression system
- Patent Title (中): 助听器包括自适应反馈抑制系统
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Application No.: US11514081Application Date: 2006-09-01
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Publication No.: US07933424B2Publication Date: 2011-04-26
- Inventor: Kristian Tjalfe Klinkby , Peter Magnus Norgaard , Jorgen Cederberg
- Applicant: Kristian Tjalfe Klinkby , Peter Magnus Norgaard , Jorgen Cederberg
- Applicant Address: DK Lynge
- Assignee: Widex A/S
- Current Assignee: Widex A/S
- Current Assignee Address: DK Lynge
- Agency: Sughrue Mion, PLLC
- Main IPC: H04R25/00
- IPC: H04R25/00

Abstract:
A hearing aid comprises an input transducer (2), a subtraction node for subtracting a feedback cancellation signal from the electrical input signal thereby generating a processor input signal, a signal processor (3), an output transducer (4), a pair of equalization filters (7a, 7b) for selecting from the processor input and output signals a plurality of frequency band signals, a frequency equalization unit for frequency equalization for the selected frequency band signals, and an adaptive feedback estimation filter (5, 6) for adaptively deriving the feedback cancellation signal from the equalized frequency band signals. The equalization of selected frequency bands of the input signals of the adaptive feedback cancellation filter provides for an improved and in particular a faster adaption of the feedback cancellation. The invention further provides a method of reducing acoustic feedback of a hearing aid, and a hearing aid circuit.
Public/Granted literature
- US20060291681A1 Hearing aid comprising adaptive feedback suppression system Public/Granted day:2006-12-28
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