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The effects of spatial separations between water sound and traffic noise sources on soundscape assessment

Hong, JY; Lam, B; Ong, ZT; Ooi, K; Gan, WS; Kang, J; Yeong, S; ... Tan, ST; + view all (2020) The effects of spatial separations between water sound and traffic noise sources on soundscape assessment. Building and Environment , 167 , Article 106423. 10.1016/j.buildenv.2019.106423. Green open access

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Abstract

Many studies have investigated the effects of water sound on soundscape with an assumption that target noise coincides with the masker (co-location), while no attention has been paid to spatial separations between target noise and water sound sources. This study aims to explore the effects of spatial separations between target noise and water sound on perceived loudness of target noise (PLN) and overall soundscape quality (OSQ) through laboratory experiments. Traffic noise (target) and a water sound (masker) were recorded as acoustic stimuli and a spherical panoramic video recording of a water fountain was also used as visual stimuli. The audio-visual stimuli were reproduced through a virtual reality head-mounted display and a multichannel ambisonic loudspeaker setup. The traffic noise and water sound were played simultaneously at various azimuthal separations and were combined with a panoramic recording of a water fountain as visual stimulus. Participants assessed the audio-visual stimuli in terms of PLN and OSQ. The effect of the spatial separation between the traffic noise and water sound was significant in both PLN and OSQ. Specifically, the PLN increase at 135° separation was equivalent to an estimated target noise level increment of ~1–2 dB. Similarly, the OSQ decrease at 135° and 180° separation was equivalent to an estimated target noise level increase of ~2–5 dB. Since the typical field of view of users in space is less than 135°, the results suggest that placing water features within a user's field of view could achieve better soundscape.

Type: Article
Title: The effects of spatial separations between water sound and traffic noise sources on soundscape assessment
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.buildenv.2019.106423
Publisher version: https://doi.org/10.1016/j.buildenv.2019.106423
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Soundscape, Spatial audio, Virtual reality, Ambisonics, Spatial release from masking, Traffic noise
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/10087570
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