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Acoustic and perceptual effects of magnifying interaural difference cues in a simulated "binaural" hearing aid.
Int J Audiol. 2018 06; 57(sup3):S81-S91.IJ

Abstract

OBJECTIVE

To investigate the influence of an algorithm designed to enhance or magnify interaural difference cues on speech signals in noisy, spatially complex conditions using both technical and perceptual measurements. To also investigate the combination of interaural magnification (IM), monaural microphone directionality (DIR), and binaural coherence-based noise reduction (BC).

DESIGN

Speech-in-noise stimuli were generated using virtual acoustics. A computational model of binaural hearing was used to analyse the spatial effects of IM. Predicted speech quality changes and signal-to-noise-ratio (SNR) improvements were also considered. Additionally, a listening test was carried out to assess speech intelligibility and quality.

STUDY SAMPLE

Listeners aged 65-79 years with and without sensorineural hearing loss (N = 10 each).

RESULTS

IM increased the horizontal separation of concurrent directional sound sources without introducing any major artefacts. In situations with diffuse noise, however, the interaural difference cues were distorted. Preprocessing the binaural input signals with DIR reduced distortion. IM influenced neither speech intelligibility nor speech quality.

CONCLUSIONS

The IM algorithm tested here failed to improve speech perception in noise, probably because of the dispersion and inconsistent magnification of interaural difference cues in complex environments.

Authors+Show Affiliations

a Medizinische Physik and Cluster of Excellence Hearing4all , Universität Oldenburg , Oldenburg , Germany.a Medizinische Physik and Cluster of Excellence Hearing4all , Universität Oldenburg , Oldenburg , Germany.a Medizinische Physik and Cluster of Excellence Hearing4all , Universität Oldenburg , Oldenburg , Germany.a Medizinische Physik and Cluster of Excellence Hearing4all , Universität Oldenburg , Oldenburg , Germany.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

28395561

Citation

de Taillez, Tobias, et al. "Acoustic and Perceptual Effects of Magnifying Interaural Difference Cues in a Simulated "binaural" Hearing Aid." International Journal of Audiology, vol. 57, no. sup3, 2018, pp. S81-S91.
de Taillez T, Grimm G, Kollmeier B, et al. Acoustic and perceptual effects of magnifying interaural difference cues in a simulated "binaural" hearing aid. Int J Audiol. 2018;57(sup3):S81-S91.
de Taillez, T., Grimm, G., Kollmeier, B., & Neher, T. (2018). Acoustic and perceptual effects of magnifying interaural difference cues in a simulated "binaural" hearing aid. International Journal of Audiology, 57(sup3), S81-S91. https://doi.org/10.1080/14992027.2017.1308564
de Taillez T, et al. Acoustic and Perceptual Effects of Magnifying Interaural Difference Cues in a Simulated "binaural" Hearing Aid. Int J Audiol. 2018;57(sup3):S81-S91. PubMed PMID: 28395561.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Acoustic and perceptual effects of magnifying interaural difference cues in a simulated "binaural" hearing aid. AU - de Taillez,Tobias, AU - Grimm,Giso, AU - Kollmeier,Birger, AU - Neher,Tobias, Y1 - 2017/04/10/ PY - 2017/4/12/pubmed PY - 2019/9/19/medline PY - 2017/4/12/entrez KW - Hearing aids KW - binaural enhancement KW - binaural hearing KW - noise KW - noise reduction KW - psychoacoustics/hearing science KW - speech perception SP - S81 EP - S91 JF - International journal of audiology JO - Int J Audiol VL - 57 IS - sup3 N2 - OBJECTIVE: To investigate the influence of an algorithm designed to enhance or magnify interaural difference cues on speech signals in noisy, spatially complex conditions using both technical and perceptual measurements. To also investigate the combination of interaural magnification (IM), monaural microphone directionality (DIR), and binaural coherence-based noise reduction (BC). DESIGN: Speech-in-noise stimuli were generated using virtual acoustics. A computational model of binaural hearing was used to analyse the spatial effects of IM. Predicted speech quality changes and signal-to-noise-ratio (SNR) improvements were also considered. Additionally, a listening test was carried out to assess speech intelligibility and quality. STUDY SAMPLE: Listeners aged 65-79 years with and without sensorineural hearing loss (N = 10 each). RESULTS: IM increased the horizontal separation of concurrent directional sound sources without introducing any major artefacts. In situations with diffuse noise, however, the interaural difference cues were distorted. Preprocessing the binaural input signals with DIR reduced distortion. IM influenced neither speech intelligibility nor speech quality. CONCLUSIONS: The IM algorithm tested here failed to improve speech perception in noise, probably because of the dispersion and inconsistent magnification of interaural difference cues in complex environments. SN - 1708-8186 UR - https://www.unboundmedicine.com/medline/citation/28395561/Acoustic_and_perceptual_effects_of_magnifying_interaural_difference_cues_in_a_simulated_"binaural"_hearing_aid_ L2 - https://www.tandfonline.com/doi/full/10.1080/14992027.2017.1308564 DB - PRIME DP - Unbound Medicine ER -