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- W2034367430 abstract "Feedback whistling is a severe problem with hearing aids. A typical acoustical feedback path represents a wave propagation path from the receiver to the microphone and includes many complicated effects among which some are invariant or nearly invariant for all users and in all acoustical environments given a specific type of hearing aids. Based on this observation, a feedback path model that consists of an invariant model and a variant model is proposed. A common-acoustical-pole and zero model-based approach and an iterative least-square search-based approach are used to extract the invariant model from a set of impulse responses of the feedback paths. A hybrid approach combining the two methods is also proposed. The general properties of the three methods are studied using artificial datasets, and the methods are cross-validated using the measured feedback paths. The results show that the proposed hybrid method gives the best overall performance, and the extracted invariant model is effective in modeling the feedback path." @default.
- W2034367430 created "2016-06-24" @default.
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- W2034367430 date "2011-07-01" @default.
- W2034367430 modified "2023-10-18" @default.
- W2034367430 title "Extracting the invariant model from the feedback paths of digital hearing aids" @default.
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- W2034367430 doi "https://doi.org/10.1121/1.3592240" @default.
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