Comparison of Frequency Transposition and Frequency Compression for People With Extensive Dead Regions in the Cochlea.

Trends in Hearing
Marina Salorio-CorbettoBrian C J Moore

Abstract

The objective was to determine the effects of two frequency-lowering algorithms (frequency transposition, FT, and frequency compression, FC) on audibility, speech identification, and subjective benefit, for people with high-frequency hearing loss and extensive dead regions (DRs) in the cochlea. A single-blind randomized crossover design was used. FT and FC were compared with each other and with a control condition (denoted 'Control') without frequency lowering, using hearing aids that were otherwise identical. Data were collected after at least 6 weeks of experience with a condition. Outcome measures were audibility, scores for consonant identification, scores for word-final /s, z/ detection ( S test), sentence-in-noise intelligibility, and a questionnaire assessing self-perceived benefit (Spatial and Qualities of Hearing Scale). Ten adults with steeply sloping high-frequency hearing loss and extensive DRs were tested. FT and FC improved the audibility of some high-frequency sounds for 7 and 9 participants out of 10, respectively. At the group level, performance for FT and FC did not differ significantly from that for Control for any of the outcome measures. However, the pattern of consonant confusions varied across conditions....Continue Reading

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Citations

Apr 21, 2020·International Journal of Audiology·Maaike Van EeckhoutteSusan Scollie
Mar 16, 2021·International Journal of Audiology·Marc A BrennanRyan W McCreery

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Methods Mentioned

BETA
diction

Software Mentioned

SDWD2
Verifit
Audioscan Verifit
CAM2A
Sound Recover
MATLAB
iPFG

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