CIC-DIGITAL - Centro de Investigação em Comunicação, Informação e Cultura Digital

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http://hdl.handle.net/10437/10934

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Percorrer CIC-DIGITAL - Centro de Investigação em Comunicação, Informação e Cultura Digital por autor "Tanaka, Atau"

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    The fungible audio-visual mapping and its experience
    (Universidade Católica Portuguesa, 2014) Sá, Adriana; Caramiaux, Baptiste; Tanaka, Atau; Escola de Comunicação, Arquitetura, Artes e Tecnologias da Informação
    This article draws a perceptual approach to audio-visual mapping. Clearly perceivable cause and effect relationships can be problematic if one desires the audience to experience the music. Indeed perception would bias those sonic qualities that fit previous concepts of causation, subordinating other sonic qualities, which may form the relations between the sounds themselves. The question is, how can an audio-visual mapping produce a sense of causation, and simultaneously confound the actual cause-effect relationships. We call this a fungible audio-visual mapping. Our aim here is to glean its constitution and aspect. We will report a study, which draws upon methods from experimental psychology to inform audio-visual instrument design and composition. The participants are shown several audio-visual mapping prototypes, after which we pose quantitative and qualitative questions regarding their sense of causation, and their sense of understanding the cause-effect relationships. The study shows that a fungible mapping requires both synchronized and seemingly non-related components – sufficient complexity to be confusing. As the specific cause-effect concepts remain inconclusive, the sense of causation embraces the whole. KEYWORDS: Audio-visual Mapping; Perception; Causation; Multisensory Integration; User Studies.
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    The variables of spatial presence: a parametric model
    (Edições Universitárias Lusófonas, 2019) Sá, Adriana; Tanaka, Atau; Escola de Comunicação, Arquitetura, Artes e Tecnologias da Informação
    The term ‘spatial presence’ refers to the feeling of presence in a mediated space. This subjective experience has been discussed in media theory, sound art, film and performance. It depends on multiple variables, or parameters. This paper presents a parametric model that can be used to analyze those variables and their relationships. It exposes methods to assess interaction, characteristics of sound and image, audio-visual relationship and physical setup. It also exposes methods to assess how these variables intertwine in perceptual experience. The model draws from perception science, interaction design, music and audio-visual theory. It is applicable to the broad diversity of aesthetical options and technical platforms, facilitating the analysis of spatial presence in any performance. One can also discard part of the parameters so as to analyze installations, sound art and film. Keywords: Parametric model, spatial presence, attention, semantics, performance