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This work presents a single channel speech enhancement approach aimed at improving speech clarity for hearing impaired listeners under challenging listening conditions. The proposed method applies nonlinear distortions to speech components isolated from the observed noisy signal using aggressive speech enhancement. The enhanced components are then mixed back into the noisy signal. The results show...
Loudness restoration approaches to hearing aid fitting prescribe gain and compression so as to restore the loudness perceived by a hearing-impaired listener to that perceived by a listener with normal-hearing. Restoring the loudness perception to normal is complicated by the spread of excitation at high stimulus levels that causes intense stimuli at low frequencies to be “heard” and to contribute...
Automatic program switching has been shown to be greatly beneficial for hearing aid users. This feature is mediated by a sound classification system, which is traditionally implemented using simple features and heuristic classification schemes, resulting in an unsatisfactory performance in complex auditory scenarios. In this study, a number of experiments are conducted to systematically assess the...
Although several studies have reported an association between obstructive sleep apnea (OSA) and the chromosomal region containing the Apolipoprotein E (ApoE) gene, findings about the exact location in the ApoE gene have been inconsistent. The objective of our study was thus to determine the allele, genotype, and haplotype frequencies at several single nucleotide polymorphisms (SNPs) in the region...
Objectives Sleep duration and sleep fragmentation have been proposed to play a role in the development and progression of obesity-associated morbidity. Weight loss results in resolution of obesity-associated morbidity. Our aim was to determine the effect of weight loss on sleep architecture in adolescents with severe obesity. Methods Retrospective analysis of polysomnograhic data from all adolescents...
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