Influence of directionality and maximal power output on speech understanding with bone anchored hearing implants in single sided deafness

Krempaska, Silvia; Koval, Juraj; Schmid, Christoph; Pfiffner, Flurin; Kurz, Anja; Kompis, Martin (2014). Influence of directionality and maximal power output on speech understanding with bone anchored hearing implants in single sided deafness. European archives of oto-rhino-laryngology, 271(6), pp. 1395-1400. Springer 10.1007/s00405-013-2565-2

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Bone-anchored hearing implants (BAHI) are routinely used to alleviate the effects of the acoustic head shadow in single-sided sensorineural deafness (SSD). In this study, the influence of the directional microphone setting and the maximum power output of the BAHI sound processor on speech understanding in noise in a laboratory setting were investigated. Eight adult BAHI users with SSD participated in this pilot study. Speech understanding in noise was measured using a new Slovak speech-in-noise test in two different spatial settings, either with noise coming from the front and noise from the side of the BAHI (S90N0) or vice versa (S0N90). In both spatial settings, speech understanding was measured without a BAHI, with a Baha BP100 in omnidirectional mode, with a BP100 in directional mode, with a BP110 power in omnidirectional and with a BP110 power in directional mode. In spatial setting S90N0, speech understanding in noise with either sound processor and in either directional mode was improved by 2.2-2.8 dB (p = 0.004-0.016). In spatial setting S0N90, speech understanding in noise was reduced by either BAHI, but was significantly better by 1.0-1.8 dB, if the directional microphone system was activated (p = 0.046), when compared to the omnidirectional setting. With the limited number of subjects in this study, no statistically significant differences were found between the two sound processors.

Item Type:

Journal Article (Original Article)


04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Ear, Nose and Throat Disorders (ENT)
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Hearing Research Laboratory
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Forschungsbereich Pavillon 52 > Forschungsgruppe Audiologie

UniBE Contributor:

Schmid, Christoph (A), Pfiffner, Flurin, Kurz, Anja, Kompis, Martin


600 Technology > 610 Medicine & health








Lilian Tschan

Date Deposited:

07 Mar 2014 10:06

Last Modified:

29 Mar 2023 23:33

Publisher DOI:


PubMed ID:


Uncontrolled Keywords:

Bone-anchored hearing aids, Baha, Unilateral hearing loss, BAHI, BP100, BP110 power, Speech understanding in noise, Single-sided deafness




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