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- Title
TOWARDS A SCALABLE, BINAURAL HEARING DEVICE: ACOUSTIC TRANSPARENCY INTERACTS WITH INTERAURAL PROCESSING.
- Authors
Kollmeier, Birger; Denk, Florian; Hiipakka, Marko; Grimm, Giso; Neher, Tobias; De Taillez, Tobias; Ernst, Stephan
- Abstract
To provide help for listeners in acoustic "difficult" situations like Cocktail parties, elements of an assistive listening device will be reviewed that both fits the requirements of near-to-normal listeners and can be scaled up to a complete hearing aid for a more substantial hearing loss. Such a system should provide benefit in noisy situations or other daily life acoustical challenges using the concept of acoustically "transparent" earpiece in combination with algorithms for interaural cue enhancement and interaural coherence processing as well as other innovative hearing aid features. The current prototype runs on the binaural, cable-connected master hearing aid (MHA) that includes earpieces allowing for approaching acoustic transparency. This can be achieved by an appropriate electro- acoustic model of the earpiece in connection with the individual ear canal and the digital filter derived from calibration requirements. A binaural high-fidelity enhancement algorithm motivated by interaural magnification is evaluated in its benefit for normal and near-tonormal listeners in comparison to a standard single-channel noise reduction algorithm. While the binaural enhancement scheme does not provide much benefit with (simulated) behind-the-ear-devices or in the closed ear canal condition, the quality evaluation shows a clear advantage if the binaural enhancement is combined with acoustic transparent earpieces. This interaction indicates that the benefit from binaural hearing device processing schemes might be underestimated if the acoustic presentation quality is limited.
- Subjects
BINAURAL hearing aids; ACOUSTIC devices; HEARING disorder diagnosis; EARMOLDS (Hearing aids); EAR canal; CALIBRATION; PHYSIOLOGY
- Publication
Journal of International Advanced Otology, 2015, Vol 11, p37
- ISSN
1308-7649
- Publication type
Article