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Method and apparatus for robust acoustic feedback cancellation

A technology of acoustics and cancellers, applied in the direction of transducer acoustic response prevention, sound-generating equipment, electronic input selection/mixing, etc.

Active Publication Date: 2018-03-09
STARKEY LAB INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, traditional adaptive feedback cancellation algorithms suffer from the appearance of noise and outliers, which are mainly caused by sudden changes in signal statistics or strong deviations from the normal distribution of background noise

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  • Method and apparatus for robust acoustic feedback cancellation
  • Method and apparatus for robust acoustic feedback cancellation
  • Method and apparatus for robust acoustic feedback cancellation

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Embodiment Construction

[0015] The following detailed description of the subject matter refers to the subject matter in the accompanying drawings showing, by way of illustration, specific aspects and embodiments in which the subject matter may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the subject matter. References to "an", "an" or "each" embodiment in this disclosure are not necessarily to the same embodiment, and such references contemplate more than one embodiment. The following detailed description is illustrative and not taken in a limiting sense. The scope of the subject matter is defined by the appended claims, along with the full scope of legal equivalents to which such claims are entitled.

[0016] The present subject matter improves the overall performance of acoustic feedback cancellation that can be used in various audio devices including, but not limited to, headsets, speakers, personal monitoring devices, earphones...

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Abstract

The present subject matter can improve robustness of performance of acoustic feedback cancellation in the presence of strong acoustic disturbances. In various embodiments, an optimization criterion determined to enhance robustness of an adaptive feedback canceller in an audio device against disturbances in an incoming audio signal can be applied such that the adaptive feedback controller remains in a converged state in response to presence of the disturbances.

Description

technical field [0001] This document relates generally to audio systems, and more specifically to acoustic amplification devices with robust acoustic feedback cancellation. Background technique [0002] Hearing devices provide sound to the wearer. Some examples of hearing devices include headsets, hearing aids, speakers, cochlear implants, bone conduction devices, and personal listening devices. Hearing aids provide acoustic amplification to compensate for hearing loss by transmitting amplified sound into the wearer's ear canal. In various examples, a hearing aid is worn in and / or around a wearer's ear. [0003] Devices that perform acoustic amplification suffer from acoustic feedback and require acoustic feedback cancellation to achieve higher gain headroom. However, traditional adaptive feedback cancellation algorithms suffer from the appearance of noise and outliers, mainly caused by sudden changes in signal statistics or strong deviations from the normal distribution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/02
CPCH04R3/02G10K11/178G10K2210/108G10K11/17854H04R25/453H04R25/43H04R25/505
Inventor 卡洛斯·雷纳托·卡尔卡达·纳卡加瓦卡里姆·赫尔瓦尼伊沃·默克斯
Owner STARKEY LAB INC
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