Audio-visual interaction and perceptual assessment of water features used over road traffic noise

Abstract

This paper examines the audio-visual interaction and perception of water features used over road traffic noise, including their semantic aural properties, as well as their categorization and evocation properties. The research focused on a wide range of small to medium sized water features that can be used in gardens and parks to promote peacefulness and relaxation. Paired comparisons highlighted the inter-dependence between uni-modal (audio-only or visual-only) and bi-modal (audio-visual) perception, indicating that equal attention should be given to the design of both stimuli. In general, natural looking features tended to increase preference scores (compared to audio-only paired comparison scores), while manmade looking features decreased them. Semantic descriptors showed significant correlations with preferences and were found to be more reliable design criteria than physical parameters. A principal component analysis identified three components within the nine semantic attributes tested: "emotional assessment," "sound quality," and "envelopment and temporal variation." The first two showed significant correlations with audio-only preferences, "emotional assessment" being the most important predictor of preferences, and its attributes naturalness, relaxation, and freshness also being significantly correlated with preferences. Categorization results indicated that natural stream sounds are easily identifiable (unlike waterfalls and fountains), while evocation results showed no unique relationship with preferences.

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

“…In addition to visual aesthetic values of water features in landscape design, water sounds from the water features have been employed as soundscape design elements to improve noisy environments [4,5]. Over the last decade, both perceptual and acoustic aspects of water sounds on soundscape have been explored through in-situ [6,7] or lab-based experiments [8][9][10][11][12][13][14][15]. Past studies have mainly studied two perceptual aspects of adding water sounds: reducing perceived loudness of a target noise and enhancing the overall acoustic comfort of the environment.…”

Cross-National Comparison of Soundscape in Urban Public Open Spaces between China and Croatia

“…Pheasant et al [39] presented an optimal relationship between the soundscape and the visual composition of a location for a "tranquil space". Moreover, the audio-visual interaction and perception of water features used to mask road traffic noise were examined [40,41].…”

Sounds and sound preferences in Han Buddhist temples

“…In terms of sound preferences, the literature has primarily focused on the sounds of public buildings, residential buildings, and the rural environment [25][26][27][28]. Researchers have argued that the human preference for natural sounds and aversion to mechanical sounds indicates that natural sounds can improve human mental health [29][30][31].…”