1,720,960 research outputs found
On the Effect of User Tracking on Perceived Source Positions in Mobile Audio Augmented Reality
No full textMobile Audio Augmented Reality (AAR) allows users to live sonic experience where virtual sound objects are integrated seamlessly with the real-world acoustic space. This paper focuses on user perception of the virtual source position and the impact of different out-of-the-box user tracking and head orientation methods made available by iPad's Augmented Reality (AR) camera tracking system and AirPods Pro. We propose an experimental procedure to rank tracking approaches according to perceived accuracy in positioning eye-level and ground-level virtual audio sources compared to real source references. To correctly provide a plausible AAR scenario, the proposed consumer electronic setup simulates a virtual sound source employing the scattering delay network (SDN) algorithm for calibrated dynamic auralisation and customized head-related transfer functions (HRTFs) for personalized user acoustics. The natural listening experience of real sound sources leverages AirPods's active signal processing algorithms for headphone hear-through capabilities. The main result of this study lies in observing an accommodation effect by users interacting with different tracking approaches and sound source positions. In summary, participants tend to prefer more stable tracking solutions despite accuracy and wide head movement range
Personalization in Audio Storytelling within Virtual and Augmented Reality: State of the Art and Insights
No full textPRELIMINARY EVALUATION OF THE AURALIZATION OF A REAL INDOOR ENVIRONMENT FOR AUGMENTED REALITY RESEARCH
No full text
Virtual Meeting Analyzer: A web application to visualize and analyze social networks emerging in group
No full textThe visualization and analysis of the social networks emerging between meeting participants could improve the communication effectiveness and satisfaction. However, accurate data collection is difficult, as it requires tracking all verbal exchanges with their direction, source and addresse(s). The analysis of this data is usually post hoc, after the meeting ends. Virtual Meeting Analyzer is a web application developed to solve these limits when tracking social network relations in small meetings. By using a simple interface, and a tablet PC pen as input modality, users without any specific skill in Social Network Analysis or informatics can extract indices on the spot. The application is divided into four modules: meeting creation, configuration, recording, and analysis (either during the meeting or afterwards). This paper describes the design of the application and the results of a tests carried out to evaluate its usability
Designing sonic interactions in intelligent reality with egocentric audio technologies
No full textSonic Interactions in Virtual Environments (SIVE) is an emerging field of study that aims to foster the creation of immersive and interactive sonic experiences in Virtual/Augmented Realities (VR/AR). Sound can convey a wealth of information, such as emotion, meaning and narratives, as well as enhance a multimodal experience. However, designing immersive sonic interactions is a complex task that requires a deep understanding of the embodied, situated and enactive aspects of sound in space. This chapter provides an overview of the field of SIVE and discusses the key concepts and challenges involved in designing meaningful sonic interactions. By using the lens of actor-network theory (ANT) and the new technological paradigm of egocentric audio, this chapter will discuss how sonic interactions can be effectively designed in their early stages to improve the sound-driven design in a multimodal perspective. In addition, the chapter proposes a novel theoretical design tool, called the Entanglement eXperience Map (EXMap), which can be used to define different perspectives and dynamic behaviors of actors within immersive sonic experiences. It considers three main concepts introduced by the egocentric audio technologies and their pivotal participation of an auditory digital twin:Â (i) sense of immersion in the VE, (ii)Â coherence of the experience, and (iii) entanglement between the user (real twin) with a cyber-physical system (digital twin). The following case study in the cultural heritage domain guides the reader:Â a user can have a museum visit experience in immersive audio AR, receiving spatialized information about artwork and artifacts based on personal interests, and emotional and psychological states. Personalized sonic interactions aim to uniquely create a meaningful and memorable experience for the user
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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