The effect of an active transcutaneous bone conduction device on spatial release from masking
Journal article, 2019

Objective: The aim was to quantify the effect of the experimental active transcutaneous Bone Conduction Implant (BCI) on spatial release from masking (SRM) in subjects with bilateral or unilateral conductive and mixed hearing loss. Design: Measurements were performed in a sound booth with five loudspeakers at 0°, +/−30° and +/−150° azimuth. Target speech was presented frontally, and interfering speech from either the front (co-located) or surrounding (separated) loudspeakers. SRM was calculated as the difference between the separated and the co-located speech recognition threshold (SRT). Study Sample: Twelve patients (aged 22–76 years) unilaterally implanted with the BCI were included. Results: A positive SRM, reflecting a benefit of spatially separating interferers from target speech, existed for all subjects in unaided condition, and for nine subjects (75%) in aided condition. Aided SRM was lower compared to unaided in nine of the subjects. There was no difference in SRM between patients with bilateral and unilateral hearing loss. In aided situation, SRT improved only for patients with bilateral hearing loss. Conclusions: The BCI fitted unilaterally in patients with bilateral or unilateral conductive/mixed hearing loss seems to reduce SRM. However, data indicates that SRT is improved or maintained for patients with bilateral and unilateral hearing loss, respectively.

active transcutaneous

cocktail party effect

speech recognition threshold

Spatial release from masking

Bone Conduction Implant

Author

Cristina Rigato

Chalmers, Electrical Engineering, Signalbehandling och medicinsk teknik, Biomedical Signals and Systems

Sabine Reinfeldt

Chalmers, Electrical Engineering, Signalbehandling och medicinsk teknik, Biomedical Signals and Systems

Filip Asp

Chalmers, Electrical Engineering, Signalbehandling och medicinsk teknik, Signal Processing

Karolinska Institutet

International Journal of Audiology

1499-2027 (ISSN) 1708-8186 (eISSN)

Vol. in press

Subject Categories

Medical Engineering

Otorhinolaryngology

DOI

10.1080/14992027.2019.1705406

More information

Latest update

1/9/2020 5