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Biomed Res Int. 2018 Sep 25;2018:5264124. doi: 10.1155/2018/5264124. eCollection 2018.

Speech Understanding and Sound Localization with a New Nonimplantable Wearing Option for Baha.

Author information

1
Hearing Research Laboratory, ARTORG Center for Biomedical Engineering Research, University of Bern, 3008 Bern, Switzerland.
2
Department of ENT, Head and Neck Surgery, Inselspital, University of Bern, 3010 Bern, Switzerland.

Abstract

Objective:

To measure the audiological benefit of the Baha SoundArc, a recently introduced nonimplantable wearing option for bone conduction sound processor, and to compare it with the known softband wearing option in subjects with normal cochlear function and a purely conductive bilateral hearing loss.

Methods:

Both ears of 15 normal hearing subjects were occluded for the time of the measurement, yielding an average unaided threshold of 49 dB HL (0.5 - 4 kHz). Soundfield thresholds, speech understanding in quiet and in noise, and sound localization were measured in unaided conditions and with 1 or 2 Baha 5 sound processors mounted on either a softband or a SoundArc device.

Results:

Soundfield thresholds and speech reception thresholds were improved by 19.5 to 24.8 dB (p<.001), when compared to the unaided condition. Speech reception thresholds in noise were improved by 3.7 to 4.7 dB (p<.001). Using 2 sound processors rather than one improved speech understanding in noise for speech from the direction of the 2nd device and sound localization error by 23° to 28°. No statistically significant difference was found between the SoundArc and the softband wearing options in any of the tests.

Conclusions:

Bone conduction sound processor mounted on a SoundArc or on a softband resulted in considerable improvements in hearing and speech understanding in subjects with a simulated, purely conductive, and bilateral hearing loss. No significant difference between the 2 wearing options was found. Using 2 sound processors improves sound localization and speech understanding in noise in certain spatial settings.

PMID:
30356363
PMCID:
PMC6176295
DOI:
10.1155/2018/5264124
[Indexed for MEDLINE]
Free PMC Article

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