alexa Effect of digital frequency compression (DFC) on speech recognition in candidates for combined electric and acoustic stimulation (EAS).
Medicine

Medicine

Journal of Communication Disorders, Deaf Studies & Hearing Aids

Author(s): Gifford RH, Dorman MF, Spahr AJ, McKarns SA

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Abstract PURPOSE: To compare the effects of conventional amplification (CA) and digital frequency compression (DFC) amplification on the speech recognition abilities of candidates for a partial-insertion cochlear implant, that is, candidates for combined electric and acoustic stimulation (EAS). METHOD: The participants were 6 patients whose audiometric thresholds at 500 Hz and below were or=80 dB HL. Six tests of speech understanding were administered with CA and DFC. The Abbreviated Profile of Hearing Aid Benefit (APHAB) was also administered following use of CA and DFC. RESULTS: Group mean scores were not statistically different in the CA and DFC conditions. However, 2 patients received substantial benefit in DFC conditions. APHAB scores suggested increased ease of communication, but also increased aversive sound quality. CONCLUSION: Results suggest that a relatively small proportion of individuals who meet EAS candidacy will receive substantial benefit from a DFC hearing aid and that a larger proportion will receive at least a small benefit when speech is presented against a background of noise. This benefit, however, comes at a cost-aversive sound quality.
This article was published in J Speech Lang Hear Res and referenced in Journal of Communication Disorders, Deaf Studies & Hearing Aids

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