Invention Grant
- Patent Title: Frequency based feedback control
- Patent Title (中): 基于频率的反馈控制
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Application No.: US13741297Application Date: 2013-01-14
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Publication No.: US09351085B2Publication Date: 2016-05-24
- Inventor: Mats Höjlund , Martin Hillbratt
- Applicant: Cochlear Limited
- Applicant Address: AU Macquarie University
- Assignee: Cochlear Limited
- Current Assignee: Cochlear Limited
- Current Assignee Address: AU Macquarie University
- Agency: McDonnell Boehnen Hulbert & Berghoff LLP
- Main IPC: H04R25/00
- IPC: H04R25/00

Abstract:
Disclosed herein is a feedback reduction system for used in a hearing prosthesis. The hearing prosthesis will receive an input signal, process the input signal, and create a transformed output. However, the hearing prosthesis may suffer from feedback. Thus, a system to minimize the feedback in a hearing prosthesis may be desirable. One system to minimize the feedback includes down-sample circuitry configured to down-sample a first signal, creating a down-sampled signal. They system also includes a filter circuit. The filter circuit filters both the first signal and the down-sampled signal. The filter will output a filtered signal and a filtered down-sampled signal, respectively. Additionally, the system features up-sample circuitry that up-samples the filtered down-sampled signal. The output of the up-sample circuitry is an up-sampled signal. Further, the system features combining circuitry that creates a feedback-reduced signal based on the up-sampled signal, the filtered signal, and an input signal.
Public/Granted literature
- US20140177890A1 Frequency Based Feedback Control Public/Granted day:2014-06-26
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