Robust feedback cancellation algorithms for single- and multi-microphone hearing aids (2017)
Abstract / truncated to 115 words
When providing the necessary amplification in hearing aids, the risk of acoustic feedback is increased due to the coupling between the hearing aid loudspeaker and the hearing aid microphone(s). This acoustic feedback is often perceived as an annoying whistling or howling. Thus, to reduce the occurrence of acoustic feedback, robust and fast-acting feedback suppression algorithms are required. The main objective of this thesis is to develop and evaluate algorithms for robust and fast-acting feedback suppression in hearing aids. Specifically, we focus on enhancing the performance of adaptive filtering algorithms that estimate the feedback component in the hearing aid microphone by reducing the number of required adaptive filter coefficients and by improving the trade-off between fast ... toggle 6 keywordshearing aids – feedback suppression – feedback cancellation – adaptive feedback cancellation – null-steering beamformer – multi-microphone
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