Effects of the visual landscape factors of an ecological waterscape on acoustic comfort

Ren, Xinxin; Kang, Jian

doi:10.1016/j.apacoust.2015.03.007

Cited by 55 publications

(37 citation statements)

References 31 publications

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“…The specific objectives of this research are: (1) Evaluate the impact of the noise generated by the hover of a small quadcopter on the reported loudness, annoyance and pleasantness of different urban soundscapes. (2) Assess the influence of the overall sound level, particular acoustics characteristics of the quadcopter (Cabell et al, 2016;Christian and Cabell, 2017;Torija et al, 2019b;Zawodny et al, 2016) and non-acoustic factors such as visual scene (Liu et al, 2014;Ren and Kang, 2015;Viollon et al, 2002) on the perception of soundscapes with a hovering UAV. (3) Discuss the effect of ambient road traffic noise in masking UAV noise as a potential action for mitigating the noise impact of UAV operations in urban environments.…”

Section: Introductionmentioning

confidence: 99%

Effects of a hovering unmanned aerial vehicle on urban soundscapes perception

Torija

Self

2020

Transportation Research Part D: Transport and Environment

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Several industry leaders and governmental agencies are currently investigating the use of Unmanned Aerial Vehicles (UAVs), or 'drones' as commonly known, for an ever-growing number of applications from blue light services to parcel delivery. For the specific case of the delivery sector, drones can alleviate road space usage and also lead to reductions in CO2 and air pollution emissions, compared to traditional diesel-powered vehicles. However, due to their unconventional acoustic characteristics and operational manoeuvres, it is uncertain how communities will respond to drone operations. Noise has been suggested as a major barrier to public acceptance of drone operations in urban areas. In this paper, a series of audio-visual scenarios were created to investigate the effects of drone noise on the reported loudness, annoyance and pleasantness of seven different types of urban soundscapes. In soundscapes highly impacted by road traffic noise, the presence of drone noise lead to small changes in the perceived loudness, annoyance and pleasantness. In soundscapes with reduced road traffic noise, the participants reported a significantly higher perceived loudness and annoyance and a lower pleasantness with the presence of the same drone noise. For instance, the reported annoyance increased from 2.3±0.8 (without drone noise) to 6.8±0.3 (with drone noise), in an 11-point scale (0-not at all, 10-extremely). Based on these results, the concentration of drone operations along flight paths through busy roads might aid in the mitigation of the overall community noise impact caused by drones.

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Section: Introductionmentioning

confidence: 99%

Effects of a hovering unmanned aerial vehicle on urban soundscapes perception

Torija

Self

2020

Transportation Research Part D: Transport and Environment

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“…In particular, tourists aging from 18 to 37 years old, who exhibited normal hearing and regular or corrected-to-normal vision, were selected as the study subjects. A sample size of 20~25 has been widely used in subjective comfort assessments (Hermida Cadena et al, 2017;Ratcliffe et al, 2013;Ren & Kang, 2015). Consequently, a sample size of 23 was adopted in this study, with a male-to-female ratio of ~1:1 (male 11, female 12) to ensure that the sample sex ratio was balanced.…”

Section: Audio-visual Comfort Surveymentioning

confidence: 99%

On the Influence Factors of Audio-Visual Comfort of Mountain Landscape Based on Field Surve

Liu

Kang

Meng

2020

Journal of Environmental Engineering and Landscape Management

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This study is aimed to investigate factors that can affect the audio-visual comfort of tourists with a mountainous landscape. The results reveal that the audio-visual comfort of tourists is positively correlated with the percentage of tourists engaged in a dynamic state. In contrast, the audio-visual comfort has strong negative correlations with density, sound pressure level and sound characters including fluctuation and loudness. Overall, respondents in the mountain area find the audio-visual level most comfortable when the ratio of visitors in dynamic states is greater than 33%, the fluctuation of sound is within 0.08 vacil, the loudness of sound is less than 46 sone, the population density is less than 0.822 person/m2, and the sound pressure level is less than 82 dB. Compared with urban areas, a 24 dB increase in the sound pressure level threshold is observed for a positive evaluation of audio-visual comfort in the mountain area.

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“…But, these two models could be important for simplifying the numbers of evaluation parameters of spatial awareness and give a quantified indicator between the sound space perception and landscapes during the soundscape planning process [25,26].…”

Section: Discussionmentioning

confidence: 99%

Linear multivariate evaluation models for spatial perception of soundscape

Deng

Kang

Wang

et al. 2015

The Journal of the Acoustical Society of America

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Soundscape is a sound environment that emphasizes the awareness of auditory perception and social or cultural understandings. The case of spatial perception is significant to soundscape. However, previous studies on the auditory spatial perception of the soundscape environment have been limited. Based on 21 native binaural-recorded soundscape samples and a set of auditory experiments for subjective spatial perception (SSP), a study of the analysis among semantic parameters, the inter-aural-cross-correlation coefficient (IACC), A-weighted-equal sound-pressure-level (L eq ), dynamic (D) and SSP is introduced to verify the independent effect of each parameter and to re-determine some of their possible relationships. The results show that the more noisiness the audience perceived, the worse spatial awareness they received, while the closer and more directional the sound source image variations, dynamics and numbers of sound sources in the soundscape are, the better the spatial awareness would be. Thus, the sensations of roughness, sound intensity, transient dynamic and the values of L eq and IACC have a suitable range for better spatial perception. A better spatial awareness seems to promote the preference slightly for the audience. Finally, setting SSPs as functions of the semantic parameters and L eq -D-IACC, two linear multivariate evaluation models of subjective spatial perception are proposed.

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Effects of the visual landscape factors of an ecological waterscape on acoustic comfort

Cited by 55 publications

References 31 publications

Effects of a hovering unmanned aerial vehicle on urban soundscapes perception

Effects of a hovering unmanned aerial vehicle on urban soundscapes perception

On the Influence Factors of Audio-Visual Comfort of Mountain Landscape Based on Field Surve

Linear multivariate evaluation models for spatial perception of soundscape

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