Journal
INTERNATIONAL JOURNAL OF AUDIOLOGY
Volume 45, Issue 3, Pages 153-171Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14992020500429484
Keywords
compression; candidature; speech intelligibility; listening comfort; satisfaction; audiogram; auditory ecology; cognitive function; psychoacoustics
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We studied candidature for linear, slow-acting AVC hearing aids, and fast-acting WDRC hearing aids in a within-subject within-device crossover design of 50 listeners with SNHL. Candidature dimensions include HTLs. ULLs, spectro-temporal and masking abnormalities, cognitive capacity, and self-reports and acoustic measures of auditory ecology Better performance with linear fittings is associated with flatter audiograms, wider dynamic range, and smaller differences in dynamic range between low and high frequencies, and also with more restricted auditory lifestyles. Better performance with all nonlinear fittings is associated with more sloping audiograms, more restricted dynamic ranges, greater differences in dynamic range between low and high frequencies, and more varied auditory lifestyles. Differential performance between WDRC and AVC Fittings is associated with patterns of variation in auditory ecology (rapid versus slow changes) and cognitive (high versus low) capacity Differential performance between WDRC in two channels, and a hybrid with WDRC in a low-frequency and AVC in a high-frequency channel is associated with psychoacoustic tests of cochlear function (high susceptibility to spectral and temporal smearing, and high susceptibility to upward spread of masking respectively). patterns of candidature include measures beyond auditory function in the domains of cognitive capacity and auditory ecology.
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