| 1. |
- Briere De La Hosseraye, Baltazar, et al.
(författare)
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A case study on workstation dependent acoustic characterization of open plan offices
- 2021
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Open-plan space is used in interior building design to create shared functional environments. The basic idea is to foster flexibility, cooperation and spaciousness in indoor environments by eliminating any boundaries hindering sight and speech intelligibility, such as walls. However, the complexity of sound propagation in open-plan spaces makes acoustic modelling a particularly challenging problem. Moreover, in open-plan offices (see Figure 1) the acoustic environment is a mixture of machine- and human-made sounds. Thus employees often feel annoyed by various types of acoustic noise. Examples for typical noise sources are speech, walking sounds, environmental noise and working sounds (eg. typing on keyboards). In contrast to the intention of increased cooperation, for tasks requiring high levels of concentration the acoustic situation of the open-plan space is a drawback. Consequently, a number of studies have begun to examine employees' responses to acoustic noise. At the same time, it is unclear which acoustical treatment is better for open-plan spaces in order to improve the well-being in the working environment. The common practices include applying sound absorbing (meta-) materials on ceilings and baffles or screens, or applying sound masking. It is greatly acknowledged that sound and vibration noise is addressed as an important factor in job satisfaction ratings, which is closely related with perceived health conditions. Therefore, it is important to reduce noise annoyances which may impair cognitive performance. However, the acoustics in open-plan offices remain often an unquantified issue. Even in cases where the acoustics are taken into account it is difficult to relate objective acoustic measurements to the employees' subjective feeling. As a result, in many cases measures to improve the acoustics are not targeted on a precise issue.
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| 2. |
- Diapoulis, Georgios, 1981, et al.
(författare)
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An analytical framework for musical live coding systems based on gestural interactions in performance practices
- 2021
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Ingår i: Proceedings of the 2021 International Conference on Live Coding (ICLC2021). - Valvidia, Chile.
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Konferensbidrag (refereegranskat)abstract
- Gestural interaction in live coding performance is still in its infancy, albeit the long tradition in music performance studies. Computational challenges in musical live coding have been motivating the research community towards the development of novel programming languages and interfaces. On the other hand, given the maturity of many music systems there is an increasing demand for theory building on live coding systems and practices. Here, we present an observational study from videos of live performances available online and we introduce an analytical framework for live coding music systems. We begin by examining how performance practices differ on potentially equivalent systems. On the spotlight of the framework is the viewpoint of gestural interactions under the prism of music psychology and perception. We examined several systems on three main processes: (i) interface design, (ii) gestural mapping and (iii) user's interaction. These processes are presented as an orthogonal three-dimensional framework, so to facilitate visualizations and readers' understanding. Preliminary assessments of the systems in question agree with ground truth knowledge of the computational classification of the systems. Furthermore, we analyze a few notable systems that are stretching the boundaries of our dimensional framework, indicating that more dimensions may be required. Finally, we discuss the analytical framework in relation to a higher-level description of live coding music performance and we discuss future studies that may be conducted to assess the validity of this approach.
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| 3. |
- Diapoulis, Georgios, 1981, et al.
(författare)
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Bottom-up live coding: Analysis of continuous interactions towards predicting programming behaviours
- 2022
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Ingår i: NIME proceedings. - : PubPub. - 2220-4806.
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Konferensbidrag (refereegranskat)abstract
- This paper explores a minimalist approach to live coding using a single input parameter to manipulate the graph structure of a finite state machine through a stream of bits. This constitutes an example of bottom-up live coding, which operates on a low level language to generate a high level structure output. Here we examine systematically how to apply mappings of continuous gestural interactions to develop a bottom-up system for predicting programming behaviours. We conducted a statistical analysis based on a controlled data generation procedure. The findings concur with the subjective experience of the behavior of the system when the user modulates the sampling frequency of a variable clock using a knob as an input device. This suggests that a sequential predictive model may be applied towards the development of a tactically predictive system according to Tanimoto’s hierarchy of liveness. The code is provided in a git repository.
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| 4. |
- Diapoulis, Georgios, 1981
(författare)
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Continuous gestural interactions in live coding
- 2022
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Live coding is a performance practice where the musicians are indirectly involved with a generative music system. Notation is necessary for canonical live coding systems, where the composer-programmer interacts using a keyboard. Typing on a keyboard requires skilled serial actions; the same applies to music performance. Contrary, hybrid interfaces move away from the "standard paradigm" to live code, which is also reflected in the performer's gestural interactions. In this workshop, I will present a hybrid live coding interface that affords continuous gestural interactions. The user provides the input using a single knob, and a generative system encodes the movements into a formal language. The system design blends notions of data and computation, which offers many possibilities for developing musical AI applications. Indicatively, the rate of change of bodily motion can be mapped to the input interface to generate many mini-languages on-the-fly. Such systems can sense kinematic movement and translate it to a computable representation, bridging pre-reflective experience and conscious processes. Aspects of completeness are addressed, and various predictive algorithms are discussed. An interactive demo will be presented.
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| 5. |
- Diapoulis, Georgios, 1981
(författare)
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Effect of tempo and vision on interpersonal coordination of timing in dyadic performance
- 2015
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Ingår i: Effect of tempo and vision on interpersonal coordination of timing in dyadic performance.
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Konferensbidrag (refereegranskat)abstract
- Interpersonal coordination within a dyadic musical performance requires that the two musicians share a similar mental model of the music’s timing structure. In addition to non-fluctuating inter-onset-interval, matched mental models can be observed through corporeal articulations and apparent embodiment of musical features (i.e. synchronous body sway, mimicked or complementary gestures). Our aim was to examine the effect of tempo on interpersonal coordination within a musical dyad. Violin dyads performed three unfamiliar collaborative musical sequences in facing vs. non-facing conditions. Our hypotheses were that interpersonal coordination would be weakened in the non-facing conditions, and that synchronization would be affected by both very slow and very fast tempi. The current paper reports the project’s initial and general findings. We present results relating to the dyads’ ability to synchronize and have performed tests on the motion capture data to examine how movement patterns change between the front- and back-facing conditions.
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| 6. |
- Diapoulis, Georgios, 1981
(författare)
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Expression in Live Coding: Gestural Interaction for Machine Musicianship
- 2023
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This thesis is centered on the performance practice of musical live coding, which can be described as on-the-fly decision-making for computer music performance and blurs the lines between programming languages and computer interfaces. I specifically focus on live coding as a human activity based on serial skilled actions, and I discuss how we can interact gesturally with interfaces that are modified dynamically. I develop a system to address how to live code using continuous gestural interactions, and examine an unusual strategy of information processing which centers on a bottom-up approach. I then present a theoretical account of sensorimotor control in live coding, which examines pre-reflective processes during performance. Two more theoretical contributions address bodily gestures in various performance systems by presenting a conceptual framework, and an additional study presents a conceptual tool for developing agent-based systems in live coding. Observations of performance practices and systems are employed throughout the thesis to examine how different practitioners may use the systems, and what conceptual abstractions can be inferred. The question of how to facilitate creativity is discussed from both a theoretical and a practical perspective, touching on how the resultant newly produced knowledge may be transferred to practitioners. A particular focus is on live performance, visualization, and both human and machine listening. The thesis findings present (i) visual and conceptual representations of live coding validated by cognitive mechanisms and cognitive paradigms, (ii) extensive reflections on practice and systemic modes of knowing, (iii) technical contributions for building of performance systems and performance structural analysis and (iv) theoretical accounts that contribute to the live coding literature. This work address both human modalities – audition, motor skills – and system modalities – notation, and the presence of software agents. I present a conception of various kinds of interactivity variations , a term used to designate various manners of gestural interaction that may arise in performance systems. I argue that musical live coding should incorporate radical experimentation with craft practices, pointing to a future practice wherein risk becomes clearly apparent in our gestural expressions.
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| 7. |
- Diapoulis, Georgios, 1981
(författare)
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Interpersonal coordination in dyadic performance
- 2017
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Ingår i: Routledge Companion to Embodied Music Interaction, (eds.) LeSaffre, Leman & Maes, Routledge. - 9781138657403
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 8. |
- Diapoulis, Georgios, 1981
(författare)
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Kinematics Feature Selection of Expressive Intentions in Dyadic Violin Performance
- 2017
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Ingår i: Proceedings of the 10th International Conference of Students of Systematic Musicology (SysMus17).
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Konferensbidrag (refereegranskat)abstract
- There is evidence that bodily movement plays a crucial role in regulating expressivity in music performance. Advances in technologies related to human movement research (e.g. motion capture using infrared cameras) give us the opportunity to study bodily motion with millimeter precision. Consequently, we can extract fine-grained kinematic characteristics and perform statistical learning techniques in order to identify similarities and differences in spatial accuracy of intended expressive movements. In this study, we applied feature extraction and feature generation algorithms to identify the kinematic characteristics that better predict expressive intentions. The results suggest that musical expressivity is not physically rendered in similar movement patterns during perception and during production of dyadic musical performance. We propose that future studies should focus on the interaction between motor experience and visual perception of expressivity.
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| 9. |
- Diapoulis, Georgios, 1981
(författare)
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Livecode me: Live coding practice and multimodal experience
- 2022
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Ingår i: PPIG 2022 - 33rd Annual Workshop. - : Psychology of Programming Interest Group (PPIG).
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- I present a practice-led research design to explore relations between listening and non-listening conditions during a month-long live coding practice. A documentation of the live coding sessions and textual data from my daily diaries are presented in a git repository. The study offers a set of observations related to musical and programming practices, an ongoing work on a visual helper and outlines issues related to solo live coding practice.
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| 10. |
- Diapoulis, Georgios, 1981
(författare)
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Liveness and machine listening in musical live coding: A conceptual framework for designing agent-based systems
- 2023
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Ingår i: Proceedings of the 4th Conference on AI Music (AIMC 2023). - 9780995786295
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Konferensbidrag (refereegranskat)abstract
- Music-making with live coding is a challenging endeavour during a performance. Contrary to traditional music performances, a live coder can be uncertain about how the next code evaluation will sound. Interactive artificial intelligence (AI) offers numerous techniques for generating future outcomes. These can be implemented on both the level of the liveness of the code and also on the generated musical sounds. I first examine the structural characteristics of various live coding systems that use agent-based technologies and present a high-level diagrammatic representation. I sketch simple block diagrams that enable me to construct a conceptual framework for designing agent-based systems. My aim is to provide a practical framework to be used by practitioners. This study has two parts: i) a high-level diagrammatic representation informed by previous studies, where I analyze patterns of interaction in eight live coding systems, and ii) a conceptual framework for designing agent-based performance systems by combining both liveness and machine listening. I identify diverse patterns of interactivities between the written code and the generated music, and I draw attention to future perspectives. One code snippet for SuperCollider is provided and mapped to the conceptual framework. The vision of the study is to raise awareness on interactive AI systems within the community and potentially help newcomers navigating in the vast potential of live coding.
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