This article presents a user experiment that assesses the feeling of spatial presence, defined as the sense of “being there” in both a real and a remote environment (respectively the so-called “natural presence” and “telepresence”). Twenty-eight participants performed a 3D-pointing task while being either physically located in a real office or remotely transported by a teleoperation system. The evaluation also included the effect of combining audio and visual rendering. Spatial presence and its components were evaluated using the ITC-SOPI questionnaire (Lessiter, Freeman, Keogh, & Davidoff, 2001 ). In addition, objective metrics based on user performance and behavioral indicators were logged. Results indicate that participants experienced a higher sense of spatial presence in the remote environment (hyper-presence), and a higher ecological validity. In contrast, objective metrics prove higher in the real environment, which highlights the absence of correlation between spatial presence and the objective metrics used in the experiment. Moreover, results show the benefit of adding audio rendering in both environments to increase the sense of spatial presence, the performance of participants, and their engagement during the task.
While auralization technology is used in a variety of fields, particularly in architectural acoustics, there is a lack of data on the auralization tools used and actual practices. In this perspective, this work presents the results of a survey study on auralization uses in the acoustical design and consulting community, targeting acoustical consultants. The objectives are (1) to identify the tools and methods used by acousticians to create auralizations as well as effective uses so as to understand the benefits and changes provided by this technology, and (2) to highlight the difficulties and limitations linked to the use of auralizations in concrete projects. Based on the theory of acceptability and use of technology, the study was conducted from a mix of quantitative and qualitative data collection approaches, combining a questionnaire answered by 74 respondents with semi-directed interviews with nine practitioners. Results highlight the main uses of auralizations, the diversity of projects in which auralizations are applied, and how auralizations are currently used in real-world situations. The benefits of using this technology, inherent weaknesses in the tools, and practical difficulties are also discussed.
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