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Binaural model-based dynamic-range compression.
Int J Audiol. 2018 06; 57(sup3):S31-S42.IJ

Abstract

OBJECTIVE

Binaural cues such as interaural level differences (ILDs) are used to organise auditory perception and to segregate sound sources in complex acoustical environments. In bilaterally fitted hearing aids, dynamic-range compression operating independently at each ear potentially alters these ILDs, thus distorting binaural perception and sound source segregation.

DESIGN

A binaurally-linked model-based fast-acting dynamic compression algorithm designed to approximate the normal-hearing basilar membrane (BM) input-output function in hearing-impaired listeners is suggested. A multi-center evaluation in comparison with an alternative binaural and two bilateral fittings was performed to assess the effect of binaural synchronisation on (a) speech intelligibility and (b) perceived quality in realistic conditions.

STUDY SAMPLE

30 and 12 hearing impaired (HI) listeners were aided individually with the algorithms for both experimental parts, respectively.

RESULTS

A small preference towards the proposed model-based algorithm in the direct quality comparison was found. However, no benefit of binaural-synchronisation regarding speech intelligibility was found, suggesting a dominant role of the better ear in all experimental conditions.

CONCLUSION

The suggested binaural synchronisation of compression algorithms showed a limited effect on the tested outcome measures, however, linking could be situationally beneficial to preserve a natural binaural perception of the acoustical environment.

Authors+Show Affiliations

a Medizinische Physik and Cluster of Excellence Hearing4all , Carl-von-Ossietzky Universität Oldenburg , Oldenburg , Germany and.a Medizinische Physik and Cluster of Excellence Hearing4all , Carl-von-Ossietzky Universität Oldenburg , Oldenburg , Germany and.a Medizinische Physik and Cluster of Excellence Hearing4all , Carl-von-Ossietzky Universität Oldenburg , Oldenburg , Germany and. b HörTech gGmbH , Oldenburg , Germany.b HörTech gGmbH , Oldenburg , Germany.a Medizinische Physik and Cluster of Excellence Hearing4all , Carl-von-Ossietzky Universität Oldenburg , Oldenburg , Germany and. b HörTech gGmbH , Oldenburg , Germany.a Medizinische Physik and Cluster of Excellence Hearing4all , Carl-von-Ossietzky Universität Oldenburg , Oldenburg , Germany and.

Pub Type(s)

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

Language

eng

PubMed ID

29373937

Citation

Ernst, Stephan M A., et al. "Binaural Model-based Dynamic-range Compression." International Journal of Audiology, vol. 57, no. sup3, 2018, pp. S31-S42.
Ernst SMA, Kortlang S, Grimm G, et al. Binaural model-based dynamic-range compression. Int J Audiol. 2018;57(sup3):S31-S42.
Ernst, S. M. A., Kortlang, S., Grimm, G., Bisitz, T., Kollmeier, B., & Ewert, S. D. (2018). Binaural model-based dynamic-range compression. International Journal of Audiology, 57(sup3), S31-S42. https://doi.org/10.1080/14992027.2018.1425554
Ernst SMA, et al. Binaural Model-based Dynamic-range Compression. Int J Audiol. 2018;57(sup3):S31-S42. PubMed PMID: 29373937.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Binaural model-based dynamic-range compression. AU - Ernst,Stephan M A, AU - Kortlang,Steffen, AU - Grimm,Giso, AU - Bisitz,Thomas, AU - Kollmeier,Birger, AU - Ewert,Stephan D, Y1 - 2018/01/26/ PY - 2018/1/28/pubmed PY - 2019/9/19/medline PY - 2018/1/28/entrez KW - Hearing aids KW - binaural KW - dynamic compression KW - speech perception SP - S31 EP - S42 JF - International journal of audiology JO - Int J Audiol VL - 57 IS - sup3 N2 - OBJECTIVE: Binaural cues such as interaural level differences (ILDs) are used to organise auditory perception and to segregate sound sources in complex acoustical environments. In bilaterally fitted hearing aids, dynamic-range compression operating independently at each ear potentially alters these ILDs, thus distorting binaural perception and sound source segregation. DESIGN: A binaurally-linked model-based fast-acting dynamic compression algorithm designed to approximate the normal-hearing basilar membrane (BM) input-output function in hearing-impaired listeners is suggested. A multi-center evaluation in comparison with an alternative binaural and two bilateral fittings was performed to assess the effect of binaural synchronisation on (a) speech intelligibility and (b) perceived quality in realistic conditions. STUDY SAMPLE: 30 and 12 hearing impaired (HI) listeners were aided individually with the algorithms for both experimental parts, respectively. RESULTS: A small preference towards the proposed model-based algorithm in the direct quality comparison was found. However, no benefit of binaural-synchronisation regarding speech intelligibility was found, suggesting a dominant role of the better ear in all experimental conditions. CONCLUSION: The suggested binaural synchronisation of compression algorithms showed a limited effect on the tested outcome measures, however, linking could be situationally beneficial to preserve a natural binaural perception of the acoustical environment. SN - 1708-8186 UR - https://www.unboundmedicine.com/medline/citation/29373937/Binaural_model_based_dynamic_range_compression_ L2 - https://www.tandfonline.com/doi/full/10.1080/14992027.2018.1425554 DB - PRIME DP - Unbound Medicine ER -