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Effects of hearing-aid dynamic range compression on spatial perception in a reverberant environment.
J Acoust Soc Am. 2017 04; 141(4):2556.JA

Abstract

This study investigated the effects of fast-acting hearing-aid compression on normal-hearing and hearing-impaired listeners' spatial perception in a reverberant environment. Three compression schemes-independent compression at each ear, linked compression between the two ears, and "spatially ideal" compression operating solely on the dry source signal-were considered using virtualized speech and noise bursts. Listeners indicated the location and extent of their perceived sound images on the horizontal plane. Linear processing was considered as the reference condition. The results showed that both independent and linked compression resulted in more diffuse and broader sound images as well as internalization and image splits, whereby more image splits were reported for the noise bursts than for speech. Only the spatially ideal compression provided the listeners with a spatial percept similar to that obtained with linear processing. The same general pattern was observed for both listener groups. An analysis of the interaural coherence and direct-to-reverberant ratio suggested that the spatial distortions associated with independent and linked compression resulted from enhanced reverberant energy. Thus, modifications of the relation between the direct and the reverberant sound should be avoided in amplification strategies that attempt to preserve the natural sound scene while restoring loudness cues.

Authors+Show Affiliations

Hearing Systems Group, Department of Electrical Engineering, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark.Hearing Systems Group, Department of Electrical Engineering, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark.Hearing Systems Group, Department of Electrical Engineering, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark.

Pub Type(s)

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

Language

eng

PubMed ID

28464692

Citation

Hassager, Henrik Gert, et al. "Effects of Hearing-aid Dynamic Range Compression On Spatial Perception in a Reverberant Environment." The Journal of the Acoustical Society of America, vol. 141, no. 4, 2017, p. 2556.
Hassager HG, Wiinberg A, Dau T. Effects of hearing-aid dynamic range compression on spatial perception in a reverberant environment. J Acoust Soc Am. 2017;141(4):2556.
Hassager, H. G., Wiinberg, A., & Dau, T. (2017). Effects of hearing-aid dynamic range compression on spatial perception in a reverberant environment. The Journal of the Acoustical Society of America, 141(4), 2556. https://doi.org/10.1121/1.4979783
Hassager HG, Wiinberg A, Dau T. Effects of Hearing-aid Dynamic Range Compression On Spatial Perception in a Reverberant Environment. J Acoust Soc Am. 2017;141(4):2556. PubMed PMID: 28464692.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of hearing-aid dynamic range compression on spatial perception in a reverberant environment. AU - Hassager,Henrik Gert, AU - Wiinberg,Alan, AU - Dau,Torsten, PY - 2017/5/4/entrez PY - 2017/5/4/pubmed PY - 2019/7/10/medline SP - 2556 EP - 2556 JF - The Journal of the Acoustical Society of America JO - J Acoust Soc Am VL - 141 IS - 4 N2 - This study investigated the effects of fast-acting hearing-aid compression on normal-hearing and hearing-impaired listeners' spatial perception in a reverberant environment. Three compression schemes-independent compression at each ear, linked compression between the two ears, and "spatially ideal" compression operating solely on the dry source signal-were considered using virtualized speech and noise bursts. Listeners indicated the location and extent of their perceived sound images on the horizontal plane. Linear processing was considered as the reference condition. The results showed that both independent and linked compression resulted in more diffuse and broader sound images as well as internalization and image splits, whereby more image splits were reported for the noise bursts than for speech. Only the spatially ideal compression provided the listeners with a spatial percept similar to that obtained with linear processing. The same general pattern was observed for both listener groups. An analysis of the interaural coherence and direct-to-reverberant ratio suggested that the spatial distortions associated with independent and linked compression resulted from enhanced reverberant energy. Thus, modifications of the relation between the direct and the reverberant sound should be avoided in amplification strategies that attempt to preserve the natural sound scene while restoring loudness cues. SN - 1520-8524 UR - https://www.unboundmedicine.com/medline/citation/28464692/Effects_of_hearing_aid_dynamic_range_compression_on_spatial_perception_in_a_reverberant_environment_ L2 - https://doi.org/10.1121/1.4979783 DB - PRIME DP - Unbound Medicine ER -