Effects and applications of spatial acuity in advanced spatial audio reproduction systems with loudspeakers

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Effects and applications of spatial acuity in advanced spatial audio reproduction systems with loudspeakers. / Lopez, Jose J.; Gutierrez-Parera, Pablo; Savioja, Lauri.

In: Applied Acoustics, Vol. 161, 107179, 01.04.2020.

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@article{310d089b58244cc7bfc1f62b0ead6abd,
title = "Effects and applications of spatial acuity in advanced spatial audio reproduction systems with loudspeakers",
abstract = "Spatial audio reproduction systems using loudspeakers produce coloration effects at high frequencies due to spatial interference between loudspeakers, in both those based on panning and those based on field synthesis. As a response to this problem and in order to reduce coloration, this paper studies the feasibility of an alternative approach where high-frequencies are reproduced from a single loudspeaker, with a different direction from that of its panned low-frequency counterpart. Listening tests are conducted to investigate the localization and quality of the source in the case that frequencies higher than 1.5 kHz are reproduced from a different direction than the low frequencies. In this context, the human ability to discriminate the spatial direction of low/high frequency bands and the error in the perceived direction of arrival for different separation angles is evaluated and quantified. The resulting data has been analyzed with ANOVA, providing significant results that allow us to establish a threshold in the angular separation of the high and low frequency parts where subjects do not perceive source location artifacts. The term just noticeable band splitting angle (JNBSA) is defined and introduced. It represents the minimum angle of separation between high and low frequencies from which the listener starts to perceive artifacts in the reproduction of a sound source using loudspeakers.",
keywords = "Auralization, Loudspeakers, Spatial acuity, Spatial audio, Vector Base Amplitude Panning (VBAP), Wave-field synthesis",
author = "Lopez, {Jose J.} and Pablo Gutierrez-Parera and Lauri Savioja",
year = "2020",
month = "4",
day = "1",
doi = "10.1016/j.apacoust.2019.107179",
language = "English",
volume = "161",
journal = "Applied Acoustics",
issn = "0003-682X",
publisher = "Elsevier Limited",

}

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TY - JOUR

T1 - Effects and applications of spatial acuity in advanced spatial audio reproduction systems with loudspeakers

AU - Lopez, Jose J.

AU - Gutierrez-Parera, Pablo

AU - Savioja, Lauri

PY - 2020/4/1

Y1 - 2020/4/1

N2 - Spatial audio reproduction systems using loudspeakers produce coloration effects at high frequencies due to spatial interference between loudspeakers, in both those based on panning and those based on field synthesis. As a response to this problem and in order to reduce coloration, this paper studies the feasibility of an alternative approach where high-frequencies are reproduced from a single loudspeaker, with a different direction from that of its panned low-frequency counterpart. Listening tests are conducted to investigate the localization and quality of the source in the case that frequencies higher than 1.5 kHz are reproduced from a different direction than the low frequencies. In this context, the human ability to discriminate the spatial direction of low/high frequency bands and the error in the perceived direction of arrival for different separation angles is evaluated and quantified. The resulting data has been analyzed with ANOVA, providing significant results that allow us to establish a threshold in the angular separation of the high and low frequency parts where subjects do not perceive source location artifacts. The term just noticeable band splitting angle (JNBSA) is defined and introduced. It represents the minimum angle of separation between high and low frequencies from which the listener starts to perceive artifacts in the reproduction of a sound source using loudspeakers.

AB - Spatial audio reproduction systems using loudspeakers produce coloration effects at high frequencies due to spatial interference between loudspeakers, in both those based on panning and those based on field synthesis. As a response to this problem and in order to reduce coloration, this paper studies the feasibility of an alternative approach where high-frequencies are reproduced from a single loudspeaker, with a different direction from that of its panned low-frequency counterpart. Listening tests are conducted to investigate the localization and quality of the source in the case that frequencies higher than 1.5 kHz are reproduced from a different direction than the low frequencies. In this context, the human ability to discriminate the spatial direction of low/high frequency bands and the error in the perceived direction of arrival for different separation angles is evaluated and quantified. The resulting data has been analyzed with ANOVA, providing significant results that allow us to establish a threshold in the angular separation of the high and low frequency parts where subjects do not perceive source location artifacts. The term just noticeable band splitting angle (JNBSA) is defined and introduced. It represents the minimum angle of separation between high and low frequencies from which the listener starts to perceive artifacts in the reproduction of a sound source using loudspeakers.

KW - Auralization

KW - Loudspeakers

KW - Spatial acuity

KW - Spatial audio

KW - Vector Base Amplitude Panning (VBAP)

KW - Wave-field synthesis

UR - http://www.scopus.com/inward/record.url?scp=85077466957&partnerID=8YFLogxK

U2 - 10.1016/j.apacoust.2019.107179

DO - 10.1016/j.apacoust.2019.107179

M3 - Article

AN - SCOPUS:85077466957

VL - 161

JO - Applied Acoustics

JF - Applied Acoustics

SN - 0003-682X

M1 - 107179

ER -

ID: 41478778