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A comparison of three approaches to verifying aided Baha output

W. E. Hodgetts ; Bo Håkansson (Institutionen för signaler och system, Medicinska signaler och system) ; P. Hagler ; S. Soli
International Journal of Audiology (1499-2027). Vol. 49 (2010), 4, p. 286-295.
[Artikel, refereegranskad vetenskaplig]

Objective: The objective of the present study was to compare three methods of estimating the audibility of aided speech using the Baha. Subjects: 23 Adult Baha users with primarily bilateral conductive hearing loss were recruited from the Bone Conduction Amplification Program at the Institute for Reconstructive Sciences in Medicine in Edmonton, Alberta, Canada. Methods: A test Baha was set to each subject's preferred listening level. The same Baha was used to assess the audibility of the long-term average speech spectrum (LTASS) for each of the following three approaches: 1) Aided soundfield thresholds, 2) Real Ear SPL, and 3) Real Head Acceleration Level. Results: Significant differences were discovered between the three approaches. Aided soundfield thresholds consistently over-estimated the sensation level of aided speech. The Real Ear SPL approach provided reasonable estimates in the mid-frequencies. However, low- and high-frequency estimates for the Real Ear approach have significant limitations. Conclusions: The Real Head Acceleration Level appears to be the most accurate method of determining aided audibility with the Baha.

Nyckelord: Baha, Aided soundfield thresholds, SPLogram, Real ear, Acceleration, Audibility, LTASS, Bone conduction, functional gain, bone-conduction, hearing aids, level, children, speech, sound



Denna post skapades 2010-04-22.
CPL Pubid: 120216

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Medicinska signaler och system

Ämnesområden

Medicinsk teknik

Chalmers infrastruktur