Perceptual threshold of apparent source width in relation to the azimuth of a single reflection

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Abstract

An investigation into the perceptual threshold of apparent source width (ASW) in relation to a single reflection azimuth was performed in binaural reproduction. In the presence of a direct sound, subjects compared the ASW produced by a single 90° reference reflection against ASW produced by a test reflection with a varying angle for four reflection delay times between 5 and 30 ms. Threshold angles were found to be approximately 40° and 130°, and did not appear to be dependent on delay time. It was also found that these threshold angles were associated to saturation in [1-IACC E3 ] versus reflection azimuth.

LanguageEnglish
PagesEL272-EL276
Number of pages5
JournalJournal of the Acoustical Society of America
Volume145
Issue number4
DOIs
Publication statusPublished - 16 Apr 2019

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azimuth
thresholds
time lag
saturation
acoustics
Saturation
Sound

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title = "Perceptual threshold of apparent source width in relation to the azimuth of a single reflection",
abstract = "An investigation into the perceptual threshold of apparent source width (ASW) in relation to a single reflection azimuth was performed in binaural reproduction. In the presence of a direct sound, subjects compared the ASW produced by a single 90° reference reflection against ASW produced by a test reflection with a varying angle for four reflection delay times between 5 and 30 ms. Threshold angles were found to be approximately 40° and 130°, and did not appear to be dependent on delay time. It was also found that these threshold angles were associated to saturation in [1-IACC E3 ] versus reflection azimuth.",
keywords = "Apparent source width, ASW, Threshold, JND, IACC",
author = "Dale Johnson and Hyunkook Lee",
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AU - Lee, Hyunkook

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AB - An investigation into the perceptual threshold of apparent source width (ASW) in relation to a single reflection azimuth was performed in binaural reproduction. In the presence of a direct sound, subjects compared the ASW produced by a single 90° reference reflection against ASW produced by a test reflection with a varying angle for four reflection delay times between 5 and 30 ms. Threshold angles were found to be approximately 40° and 130°, and did not appear to be dependent on delay time. It was also found that these threshold angles were associated to saturation in [1-IACC E3 ] versus reflection azimuth.

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KW - Threshold

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KW - IACC

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JF - Journal of the Acoustical Society of America

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