Spatial Unmasking Effect on Speech Reception Threshold in the Median Plane

This study examined whether the spatial unmasking effect operates on speech reception thresholds (SRTs) in the median plane. SRTs were measured using an adaptive staircase procedure, with target speech sentences and speech-shaped noise maskers presented via loudspeakers at −30°, 0°, 30°, 60° and 90°...

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Main Authors: Nathan Berwick, Hyunkook Lee
Format: Article
Language:English
Published: MDPI AG 2020-07-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/10/15/5257
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author Nathan Berwick
Hyunkook Lee
author_facet Nathan Berwick
Hyunkook Lee
author_sort Nathan Berwick
collection DOAJ
description This study examined whether the spatial unmasking effect operates on speech reception thresholds (SRTs) in the median plane. SRTs were measured using an adaptive staircase procedure, with target speech sentences and speech-shaped noise maskers presented via loudspeakers at −30°, 0°, 30°, 60° and 90°. Results indicated a significant median plane spatial unmasking effect, with the largest SRT gain obtained for the −30° elevation of the masker. Head-related transfer function analysis suggests that the result is associated with the energy weighting of the ear-input signal of the masker at upper-mid frequencies relative to the maskee.
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spelling doaj.art-0a152f4cc60d4a8fbb58c117384cb2c22023-11-20T08:27:16ZengMDPI AGApplied Sciences2076-34172020-07-011015525710.3390/app10155257Spatial Unmasking Effect on Speech Reception Threshold in the Median PlaneNathan Berwick0Hyunkook Lee1Applied Psychoacoustics Laboratory (APL), University of Huddersfield, Huddersfield HD1 3DH, UKApplied Psychoacoustics Laboratory (APL), University of Huddersfield, Huddersfield HD1 3DH, UKThis study examined whether the spatial unmasking effect operates on speech reception thresholds (SRTs) in the median plane. SRTs were measured using an adaptive staircase procedure, with target speech sentences and speech-shaped noise maskers presented via loudspeakers at −30°, 0°, 30°, 60° and 90°. Results indicated a significant median plane spatial unmasking effect, with the largest SRT gain obtained for the −30° elevation of the masker. Head-related transfer function analysis suggests that the result is associated with the energy weighting of the ear-input signal of the masker at upper-mid frequencies relative to the maskee.https://www.mdpi.com/2076-3417/10/15/5257spatial unmaskingspeech reception thresholdmedian plane
spellingShingle Nathan Berwick
Hyunkook Lee
Spatial Unmasking Effect on Speech Reception Threshold in the Median Plane
Applied Sciences
spatial unmasking
speech reception threshold
median plane
title Spatial Unmasking Effect on Speech Reception Threshold in the Median Plane
title_full Spatial Unmasking Effect on Speech Reception Threshold in the Median Plane
title_fullStr Spatial Unmasking Effect on Speech Reception Threshold in the Median Plane
title_full_unstemmed Spatial Unmasking Effect on Speech Reception Threshold in the Median Plane
title_short Spatial Unmasking Effect on Speech Reception Threshold in the Median Plane
title_sort spatial unmasking effect on speech reception threshold in the median plane
topic spatial unmasking
speech reception threshold
median plane
url https://www.mdpi.com/2076-3417/10/15/5257
work_keys_str_mv AT nathanberwick spatialunmaskingeffectonspeechreceptionthresholdinthemedianplane
AT hyunkooklee spatialunmaskingeffectonspeechreceptionthresholdinthemedianplane