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The multidisciplinary integration of knowledge, approaches and tools: toward the sensory human experience centres

Masullo Massimiliano, Maffei Luigi

Vibrations in Physical Systems

2022

Vol. 33, nr 1

art. no. 2022108

The technological progress of the last decades has significantly contributed to the development and innovation of several areas, such as engineering, architecture, and medicine, providing new possibilities to measure, control, simulate and assess most of the physical phenomena of the environment, and the corresponding reactions of the individuals. This has shifted the attention of researchers toward the need to understand, in depth, the mechanisms which influence the perception and well-being of humans in complex environments (e.g., cities, urban parks). In this light, it can be expected that the first-person experiences will be assumed as the new frontier of future decision-making and design processes, as they may involve representatives of local communities and groups of interest. This approach leads to a multidisciplinary integration and contamination of the scientific competencies for all research groups involved in the so-called holistic research. Overcoming the concept of noise that has dominated until the end of the last century and considering the environmental sounds as a 'resource' rather than a 'waste', with the introduction of the Soundscape approach, psychologists and sociologists have provided several tools (e.g., questionnaires, scales, tasks) to measure the perceptual, emotional, and cognitive reactions of the individuals when they are exposed to the sounds. Different multidisciplinary research groups are involved in studies that adopt, refine, or propose new investigation tools, to assess, modify and manage the sound of cities, and their effects on the satisfaction and well-being of the population. Moreover, the huge development of miniaturised and powerful hardware and software of the last decade allowed the reconstruction of audio-visual scenarios with a very high degree of realism and the possibility of interacting ecologically with the virtual environment in a fully functional immersive experience. The recent possibility to measure the physiological and neurological reactions of the individuals has opened a further road to extend the knowledge about the effects of noise and the weight of the other physical factors on the populations. A scheme of Sensory Human Experience Centres, where approaches, tools, competencies of various disciplines are integrated, is presented. These kinds of centres could represent, in future, the places where they concentrate the selection and validations of design alternatives (e.g., product, building, city and infrastructure scale) at the local and national levels.

Effects of the spatialisation of water-sounds sequences on the perception of traffic noise

Li Jian, Maffei Luigi, Pascale Aniello, Masullo Massimiliano

Vibrations in Physical Systems

2022

Vol. 33, nr 1

art. no. 2022110

In the last decades, different researchers have shown the positive effects of informational masking (IM) on mitigating traffic noise perception and improving the local soundscape in urban parks. Most of these studies have tested various water sounds at different signal-to-noise ratios to optimise the selection and the sound levels to set the water sounds playback. However, less is known about the effects of the spatial distribution and movement of water sounds on the perception of the surrounding environment. Three different water-sounds sequences, and one control condition with only traffic noise, were created and used in an online experiment to investigate the role of spatialisation of water-sounds sequences. The sequences include a frontal fixed-position water sound, a two-position switching water sound and a four-position-randomised moving water sound. All of them were superimposed with a background traffic noise. Thirty-six subjects participated and answered an online questionnaire consisting of sets of items to describe the sound’s perception and feeling. The Perceived Restorativeness Scale (PRS-11) was also administered. The results have shown that introducing water-sounds sequences improves some components of the restorative qualities (Fascination and Being-Away). Moreover, different spatialisation settings of water sounds proved to modify people’s perception and feelings in different aspects, including attractiveness, smoothness, mechanicalness, stimulation, and nervousness.