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Appl. Sci. 2017, 7(2), 144; doi:10.3390/app7020144

Global and Continuous Pleasantness Estimation of the Soundscape Perceived during Walking Trips through Urban Environments

1
AME-LAE (Environmental Acoustics Laboratory), Ifsttar (Development of Networks, French Institute of Science and Technology for Transport), 44341 Bouguenais, France
2
ETIS, UMR 8051/ENSEA, University of Cergy-Pontoise, CNRS, 95000 Cergy, France
3
Waves Research Group, Department of Infor mation Technology, Ghent University, Technologiepark-Zwijnaarde 15, 9052 Ghent, Belgium
4
Bruitparif, 93500 Pantin, France
*
Author to whom correspondence should be addressed.
Academic Editor: Jian Kang
Received: 14 October 2016 / Revised: 19 January 2017 / Accepted: 25 January 2017 / Published: 5 February 2017
(This article belongs to the Special Issue Noise and Vibration Control in the Built Environment)
View Full-Text   |   Download PDF [1595 KB, uploaded 5 February 2017]   |  

Abstract

This paper investigates how the overall pleasantness of the sound environment of an urban walking trip can be estimated through acoustical measurements along the path. For this purpose, two laboratory experiments were carried out, during which controlled and natural 3-min audio and audiovisual sequences were presented. Participants were asked to continuously assess the pleasantness of the sound environment along the sequence, and globally at its end. The results reveal that the global sound pleasantness is principally explained by the average of the instantaneous sound pleasantness values. Accounting for recency or trend effects improved the estimates of the global sound pleasantness over controlled sound sequences, but their contribution is not significant for the second group of stimuli, which are based on natural audio sequences and include visual information. In addition, models for global and continuous pleasantness, as a function of the instantaneous sound pressure level Leq,1s, are proposed. The instantaneous sound pleasantness is found to be mainly impacted by the average sound level over the past 6 s. A logarithmic fading mechanism, extracted from psychological literature, is also proposed for this modelling, and slightly improves the estimations. Finally, the globally perceived sound pleasantness can be accurately estimated from the sound pressure level of the sound sequences, explaining about 60% of the variance in the global sound pleasantness ratings. View Full-Text
Keywords: sound pleasantness; perceptual test; urban sound environment; recency effect; urban walking trip sound pleasantness; perceptual test; urban sound environment; recency effect; urban walking trip
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Aumond, P.; Can, A.; De Coensel, B.; Ribeiro, C.; Botteldooren, D.; Lavandier, C. Global and Continuous Pleasantness Estimation of the Soundscape Perceived during Walking Trips through Urban Environments. Appl. Sci. 2017, 7, 144.

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