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The effect of tone-vocoding on spatial release from masking for old, hearing-impaired listeners.
J Acoust Soc Am. 2017 04; 141(4):2591.JA

Abstract

Old, hearing-impaired listeners generally benefit little from lateral separation of multiple talkers when listening to one of them. This study aimed to determine how spatial release from masking (SRM) in such listeners is affected when the interaural time differences (ITDs) in the temporal fine structure (TFS) are manipulated by tone-vocoding (TVC) at the ears by a master hearing aid system. Word recall was compared, with and without TVC, when target and masker sentences from a closed set were played simultaneously from the front loudspeaker (co-located) and when the maskers were played 45° to the left and right of the listener (separated). For 20 hearing-impaired listeners aged 64 to 86, SRM was 3.7 dB smaller with TVC than without TVC. This difference in SRM correlated with mean audiometric thresholds below 1.5 kHz, even when monaural TFS sensitivity (discrimination of frequency-shifts in identically filtered complexes) was partialed out, suggesting that low-frequency audiometric thresholds may be a good indicator of candidacy for hearing aids that preserve ITDs. The TVC difference in SRM was not correlated with age, pure-tone ITD thresholds, nor fundamental frequency difference limens, and only with monaural TFS sensitivity before control for low-frequency audiometric thresholds.

Authors+Show Affiliations

Manchester Centre for Audiology and Deafness, University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom.Manchester Centre for Audiology and Deafness, University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom.Manchester Centre for Audiology and Deafness, University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom.Eriksholm Research Centre, Oticon A/S, Rørtangvej 20, Snekkersten, Denmark.Eriksholm Research Centre, Oticon A/S, Rørtangvej 20, Snekkersten, Denmark.Eriksholm Research Centre, Oticon A/S, Rørtangvej 20, Snekkersten, Denmark.Eriksholm Research Centre, Oticon A/S, Rørtangvej 20, Snekkersten, Denmark.Eriksholm Research Centre, Oticon A/S, Rørtangvej 20, Snekkersten, Denmark.

Pub Type(s)

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

Language

eng

PubMed ID

28464637

Citation

King, Andrew, et al. "The Effect of Tone-vocoding On Spatial Release From Masking for Old, Hearing-impaired Listeners." The Journal of the Acoustical Society of America, vol. 141, no. 4, 2017, p. 2591.
King A, Hopkins K, Plack CJ, et al. The effect of tone-vocoding on spatial release from masking for old, hearing-impaired listeners. J Acoust Soc Am. 2017;141(4):2591.
King, A., Hopkins, K., Plack, C. J., Pontoppidan, N. H., Bramsløw, L., Hietkamp, R. K., Vatti, M., & Hafez, A. (2017). The effect of tone-vocoding on spatial release from masking for old, hearing-impaired listeners. The Journal of the Acoustical Society of America, 141(4), 2591. https://doi.org/10.1121/1.4979593
King A, et al. The Effect of Tone-vocoding On Spatial Release From Masking for Old, Hearing-impaired Listeners. J Acoust Soc Am. 2017;141(4):2591. PubMed PMID: 28464637.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effect of tone-vocoding on spatial release from masking for old, hearing-impaired listeners. AU - King,Andrew, AU - Hopkins,Kathryn, AU - Plack,Christopher J, AU - Pontoppidan,Niels Henrik, AU - Bramsløw,Lars, AU - Hietkamp,Renskje K, AU - Vatti,Marianna, AU - Hafez,Atefeh, PY - 2017/5/4/entrez PY - 2017/5/4/pubmed PY - 2019/7/10/medline SP - 2591 EP - 2591 JF - The Journal of the Acoustical Society of America JO - J Acoust Soc Am VL - 141 IS - 4 N2 - Old, hearing-impaired listeners generally benefit little from lateral separation of multiple talkers when listening to one of them. This study aimed to determine how spatial release from masking (SRM) in such listeners is affected when the interaural time differences (ITDs) in the temporal fine structure (TFS) are manipulated by tone-vocoding (TVC) at the ears by a master hearing aid system. Word recall was compared, with and without TVC, when target and masker sentences from a closed set were played simultaneously from the front loudspeaker (co-located) and when the maskers were played 45° to the left and right of the listener (separated). For 20 hearing-impaired listeners aged 64 to 86, SRM was 3.7 dB smaller with TVC than without TVC. This difference in SRM correlated with mean audiometric thresholds below 1.5 kHz, even when monaural TFS sensitivity (discrimination of frequency-shifts in identically filtered complexes) was partialed out, suggesting that low-frequency audiometric thresholds may be a good indicator of candidacy for hearing aids that preserve ITDs. The TVC difference in SRM was not correlated with age, pure-tone ITD thresholds, nor fundamental frequency difference limens, and only with monaural TFS sensitivity before control for low-frequency audiometric thresholds. SN - 1520-8524 UR - https://www.unboundmedicine.com/medline/citation/28464637/The_effect_of_tone_vocoding_on_spatial_release_from_masking_for_old_hearing_impaired_listeners_ L2 - https://doi.org/10.1121/1.4979593 DB - PRIME DP - Unbound Medicine ER -