2018
Authors
Maças, C; Rodrigues, A; Bernardes, G; Machado, P;
Publication
2018 22ND INTERNATIONAL CONFERENCE INFORMATION VISUALISATION (IV)
Abstract
We present MixMash, an interactive tool to assist users in the creation of music mashups based on cross-modal associations between musical content analysis and information visualisation. Our point of departure is a harmonic mixing method for musical mashups by Bernardes et al. [1]. To surpass design limitations identified in the previous method, we propose a new interactive visualisation of multidimensional musical attributes-hierarchical harmonic compatibility, onset density, spectral region, and timbral similarity-extracted from a large collection of audio tracks. All tracks are represented as nodes whose distances and edge connections indicate their harmonic compatibility as a result of a force-directed graph. In addition, we provide a visual language that aims to enhance the tool usability and foster creative endeavour in the search for meaningful music mixes.
2018
Authors
Lopes, Filipe; Bernardes, Gilberto; Cardoso, Clara;
Publication
4th International Conference on Live Interfaces: Inspiration, Performance, Emancipation
Abstract
We present Variações sobre Espaço #6, a mixed media work for saxophone and electronics that intersects music, digital technologies and architecture.
The creative impetus supporting this composition is grounded in the interchange of the following two concepts:
1) the phenomenological exploration
of the aural architecture (Blesse &
Salter 2007) particularly the reverberation as a sonic effect (Augoyard &
Torgue 2005) through music performance and 2) the real time sound
analysis of both the performance and
the reverberation (i.e. impulse
responses) intervallic content — which
ultimately leads to a generic control
over consonance/dissonance (C/D).
Their conceptual and morphological
nature can be understood as sonic
improvisations where the interaction
of sound producing bodies (i.e. the
saxophone) with the real (e.g. performance space) and the imaginary (i.e.
computer) acoustic response of a
space results in formal elements mirroring their physical surroundings.
2018
Authors
Bernardes, Gilberto; Lopes, Filipe; Cardoso, Clara;
Publication
Resonate, Thinking Sound and Space
Abstract
We present ?Soniferous Resonances?, an ongoing collection of electroacoustic composition
pieces that intersect music, digital technologies and architecture. The creative impetus
supporting this research is grounded in the interchange of the following two concepts: 1) the
phenomenological exploration of the aural architecture [1], particularly the reverberation as a
sonic effect [2] through music performance and 2) the real time sound analysis of both the
performance and the reverberation (i.e. impulse responses) intervallic content — which
ultimately leads to a generic control over consonance/dissonance (C/D). Their conceptual
and morphological nature can be understood as sonic improvisations where the interaction
of sound producing bodies (e.g. saxophone) with the real (e.g. performance space) and the
imaginary (i.e. computer) acoustic response of a space results in formal elements mirroring
their physical surroundings.
Particular emphasis is given to spectromorphological manipulations by a large array of
“contrasting” digital reverberations with extended control over the sound mass [3] and its
musical interval content across a continuum between pitched and consonant to unpitched
and dissonant sounds. Two digital applications developed by the authors are seminal in
Soniferous Resonances?: Wallace [4] and MusikVerb [5]. The first is a navigable user-control
surface that offers a fluid manipulation of audio signals to be convolved with several
“contrasting” digital reverberations. The second offers refined (compositional) control over
the interval content and/or C/D levels computed from the perceptually-inspired Tonal Interval
Space [6] resulting in an automatically adaptation of harmonic content in real time.
Soniferous Resonances? aims at pushing the boundaries of musical performances that are
formally tied to its surrounding space, as well as triggering new concepts and greater
awareness about the sublime qualities of experiencing aural architecture.
2018
Authors
Rajagopal, N; Lazik, P; Pereira, N; Chayapathy, S; Sinopoli, B; Rowe, A;
Publication
2018 17TH ACM/IEEE INTERNATIONAL CONFERENCE ON INFORMATION PROCESSING IN SENSOR NETWORKS (IPSN)
Abstract
Indoor localization systems typically determine a position using either ranging measurements, inertial sensors, environmental-specific signatures or some combination of all of these methods. Given a floor plan, inertial and signature-based systems can converge on accurate locations by slowly pruning away inconsistent states as a user walks through the space. In contrast, range-based systems are capable of instantly acquiring locations, but they rely on densely deployed beacons and suffer from inaccurate range measurements given non-line-of-sight (NLOS) signals. In order to get the best of both worlds, we present an approach that systematically exploits the geometry information derived from building floor plans to directly improve location acquisition in range-based systems. Our solving approach can disambiguate multiple feasible locations taking into account a mix of LOS and NLOS hypotheses to accurately localize with significantly fewer beacons. We demonstrate our geometry-aware solving approach using a new ultrasonic beacon platform that is able to perform direct time-of-flight ranges on commodity smartphones. The platform uses Bluetooth Low Energy (BLE) for time synchronization and ultrasound for measuring propagation distance. We evaluate our system's accuracy with multiple deployments in a university campus and show that our approach shifts the 80% accuracy point from 4-8m to 1m as compared to solvers that do not use the floor plan information. We are able to detect and remove NLOS signals with 91.5% accuracy.
2018
Authors
Fortuna, P; Pereira, N; Butun, I;
Publication
ICISSP: PROCEEDINGS OF THE 4TH INTERNATIONAL CONFERENCE ON INFORMATION SYSTEMS SECURITY AND PRIVACY
Abstract
Due to their universal accessibility, interactivity and scaling ease, Web applications relying on client-side code execution are currently the most common form of delivering applications and it is likely that they will continue to enter into less common realms such as IoT-based applications. We reason that modern Web applications should be able to exhibit advanced security protection mechanisms and review the research literature that points to useful partial solutions. Then, we propose a framework to support such characteristics and the features needed to implement them, providing a roadmap for a comprehensive solution to support Web application integrity.
2018
Authors
Butun, I; Pereira, N; Gidlund, M;
Publication
Abstract
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