Situational Awareness: The Effect of Stimulus Type and Hearing Protection on Sound Localization

The purpose of the current study was to test sound localization of a spoken word, rarely studied in the context of localization, compared to pink noise and a gunshot, while taking into account the source position and the effect of different hearing protection devices (HPDs) used by the listener. Nin...

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Autores principales:	Leah Fostick, Nir Fink
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	localization speech mirror image reversal errors Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/6edf806964c7427f84c750297b9b8553
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spelling	oai:doaj.org-article:6edf806964c7427f84c750297b9b85532021-11-11T19:04:23ZSituational Awareness: The Effect of Stimulus Type and Hearing Protection on Sound Localization10.3390/s212170441424-8220https://doaj.org/article/6edf806964c7427f84c750297b9b85532021-10-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/21/7044https://doaj.org/toc/1424-8220The purpose of the current study was to test sound localization of a spoken word, rarely studied in the context of localization, compared to pink noise and a gunshot, while taking into account the source position and the effect of different hearing protection devices (HPDs) used by the listener. Ninety participants were divided into three groups using different HPDs. Participants were tested twice, under with- and no-HPD conditions, and were requested to localize the different stimuli that were delivered from one of eight speakers evenly distributed around them (starting from 22.5°). Localization of the word stimulus was more difficult than that of the other stimuli. HPD usage resulted in a larger mean root-mean-square error (RMSE) and increased mirror image reversal errors for all stimuli. In addition, HPD usage increased the mean RMSE and mirror image reversal errors for stimuli delivered from the front and back, more than for stimuli delivered from the left and right. HPDs affect localization, both due to attenuation and to limitation of pinnae cues when using earmuffs. Difficulty localizing the spoken word should be considered when assessing auditory functionality and should be further investigated to include HPDs with different attenuation spectra and levels, and to further types of speech stimuli.Leah FostickNir FinkMDPI AGarticlelocalizationspeechmirror image reversal errorsChemical technologyTP1-1185ENSensors, Vol 21, Iss 7044, p 7044 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	localization speech mirror image reversal errors Chemical technology TP1-1185
spellingShingle	localization speech mirror image reversal errors Chemical technology TP1-1185 Leah Fostick Nir Fink Situational Awareness: The Effect of Stimulus Type and Hearing Protection on Sound Localization
description	The purpose of the current study was to test sound localization of a spoken word, rarely studied in the context of localization, compared to pink noise and a gunshot, while taking into account the source position and the effect of different hearing protection devices (HPDs) used by the listener. Ninety participants were divided into three groups using different HPDs. Participants were tested twice, under with- and no-HPD conditions, and were requested to localize the different stimuli that were delivered from one of eight speakers evenly distributed around them (starting from 22.5°). Localization of the word stimulus was more difficult than that of the other stimuli. HPD usage resulted in a larger mean root-mean-square error (RMSE) and increased mirror image reversal errors for all stimuli. In addition, HPD usage increased the mean RMSE and mirror image reversal errors for stimuli delivered from the front and back, more than for stimuli delivered from the left and right. HPDs affect localization, both due to attenuation and to limitation of pinnae cues when using earmuffs. Difficulty localizing the spoken word should be considered when assessing auditory functionality and should be further investigated to include HPDs with different attenuation spectra and levels, and to further types of speech stimuli.
format	article
author	Leah Fostick Nir Fink
author_facet	Leah Fostick Nir Fink
author_sort	Leah Fostick
title	Situational Awareness: The Effect of Stimulus Type and Hearing Protection on Sound Localization
title_short	Situational Awareness: The Effect of Stimulus Type and Hearing Protection on Sound Localization
title_full	Situational Awareness: The Effect of Stimulus Type and Hearing Protection on Sound Localization
title_fullStr	Situational Awareness: The Effect of Stimulus Type and Hearing Protection on Sound Localization
title_full_unstemmed	Situational Awareness: The Effect of Stimulus Type and Hearing Protection on Sound Localization
title_sort	situational awareness: the effect of stimulus type and hearing protection on sound localization
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6edf806964c7427f84c750297b9b8553
work_keys_str_mv	AT leahfostick situationalawarenesstheeffectofstimulustypeandhearingprotectiononsoundlocalization AT nirfink situationalawarenesstheeffectofstimulustypeandhearingprotectiononsoundlocalization
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Situational Awareness: The Effect of Stimulus Type and Hearing Protection on Sound Localization

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