Andre Perrotta | Universidade Católica Portuguesa (original) (raw)
Papers by Andre Perrotta
Proceedings of the 2016 CHI Conference Extended Abstracts on Human Factors in Computing Systems - CHI EA '16, 2016
"Perfect Take" is a public installation out of networked acoustic instruments that let composers ... more "Perfect Take" is a public installation out of networked acoustic
instruments that let composers from all over the world exhibit
their MIDI-works by means of the Internet. The primary aim of
this system is to offer composers a way to have works exhibited
and recorded in venues and with technologies not accessible to
him/her under normal circumstances. The Secondary aim of
this research is to highlight experience design as a complement
to interaction design, and a shift of focus from functionality of
a specific gestural controller, towards the environments, events
and processes that they are part of.
Developing the live-electronics for a contemporary elec- troacoustic piece is a complex process t... more Developing the live-electronics for a contemporary elec- troacoustic piece is a complex process that normally in- volves the transfer of artistic and aesthetic concepts be- tween the composer and the musical assistant. Translating in technical terms the musical, artistic and aesthetic con- cepts by means of algorithms and mathematical parame- ters is seldom an easy and straightforward task. The use of a particle system to describe the dynamics and character- istics of compositional parameters can reveal an effective way for achieving a significant relationship between com- positional aspects and their technical implementation. This paper describes a method for creating and modelling a par- ticle system based on compositional parameters and how to map those parameters into digital audio processes. An implementation of this method is described, as well as the use of such a method for the development of the work O Farfalhar das Folhas (The rustling of leaves) (2010), for one flutist, one clarinetist, violin, violoncello, piano and live-electronics, by Flo Menezes.
A revision of the recursive method proposed by S. A. Shakir [Am. J. Phys. 52, 845 (1984)] to solv... more A revision of the recursive method proposed by S. A. Shakir [Am. J. Phys. 52, 845 (1984)] to solve bound eigenvalues of the Schrödinger equation is presented. Equations are further simplified and generalized for computing wave functions of any given one-dimensional potential, providing accurate solutions not only for bound states but also for scattering and resonant states, as demonstrated here for a few examples. Keywords: one-dimensional quantum potentials, numerical solutions, computational methods, Schrödinger equation.
A revision of the recursive method proposed by S. A. Shakir [Am. J. Phys. 52, 845 (1984)] to solv... more A revision of the recursive method proposed by S. A. Shakir [Am. J. Phys. 52, 845 (1984)] to solve bound eigenvalues of the Schrödinger equation is presented. Equations are further simplified and generalized for computing wave functions of any given one-dimensional potential, providing accurate solutions not only for bound states but also for scattering and resonant states, as demonstrated here for a few examples. Keywords: one-dimensional quantum potentials, numerical solutions, computational methods, Schrödinger equation.
This paper describes the development of the virtual scenography for the opera for choir, narrator... more This paper describes the development of the virtual scenography for the opera for choir, narrator and live electronics AMeninadaGotinhabyA ́guabyMiguelAzguime.Theoperawas commissioned by the Ecomuseu Municipal de Seixal. The world premier was on December 21st at Cinema Sa ̃o Jorge, Lisbon - Portugal. The virtual scenography was developed in a part- nership between Miso Music Portugal and CITAR (Center for Investigation of Art and Technology of the Portuguese Catholic University), with the intention of substituting the traditional lightnings and scenography systems with projections and also for introducing an interactive aspect for the visual content of the stage. The final visual result was a composition of pre-edited videos, real-time interactive animations and pre-made children drawings that were made interactive. The interaction was divided in two parts: a master controller software with graphical user interface and two Reactables (Reactable Live!)[5] with custom software, through which, six children could control images and real-time effects. We conclude that the dialog between the music, choreography and scenography was enhanced by the use of an interactive virtual scenography. Designing the live visuals to highlight each key moment of the musical and literal text potentialized the general understanding and appreciation of the opera by the public.
Proceedings of the 2016 CHI Conference Extended Abstracts on Human Factors in Computing Systems - CHI EA '16, 2016
"Perfect Take" is a public installation out of networked acoustic instruments that let composers ... more "Perfect Take" is a public installation out of networked acoustic
instruments that let composers from all over the world exhibit
their MIDI-works by means of the Internet. The primary aim of
this system is to offer composers a way to have works exhibited
and recorded in venues and with technologies not accessible to
him/her under normal circumstances. The Secondary aim of
this research is to highlight experience design as a complement
to interaction design, and a shift of focus from functionality of
a specific gestural controller, towards the environments, events
and processes that they are part of.
Developing the live-electronics for a contemporary elec- troacoustic piece is a complex process t... more Developing the live-electronics for a contemporary elec- troacoustic piece is a complex process that normally in- volves the transfer of artistic and aesthetic concepts be- tween the composer and the musical assistant. Translating in technical terms the musical, artistic and aesthetic con- cepts by means of algorithms and mathematical parame- ters is seldom an easy and straightforward task. The use of a particle system to describe the dynamics and character- istics of compositional parameters can reveal an effective way for achieving a significant relationship between com- positional aspects and their technical implementation. This paper describes a method for creating and modelling a par- ticle system based on compositional parameters and how to map those parameters into digital audio processes. An implementation of this method is described, as well as the use of such a method for the development of the work O Farfalhar das Folhas (The rustling of leaves) (2010), for one flutist, one clarinetist, violin, violoncello, piano and live-electronics, by Flo Menezes.
A revision of the recursive method proposed by S. A. Shakir [Am. J. Phys. 52, 845 (1984)] to solv... more A revision of the recursive method proposed by S. A. Shakir [Am. J. Phys. 52, 845 (1984)] to solve bound eigenvalues of the Schrödinger equation is presented. Equations are further simplified and generalized for computing wave functions of any given one-dimensional potential, providing accurate solutions not only for bound states but also for scattering and resonant states, as demonstrated here for a few examples. Keywords: one-dimensional quantum potentials, numerical solutions, computational methods, Schrödinger equation.
A revision of the recursive method proposed by S. A. Shakir [Am. J. Phys. 52, 845 (1984)] to solv... more A revision of the recursive method proposed by S. A. Shakir [Am. J. Phys. 52, 845 (1984)] to solve bound eigenvalues of the Schrödinger equation is presented. Equations are further simplified and generalized for computing wave functions of any given one-dimensional potential, providing accurate solutions not only for bound states but also for scattering and resonant states, as demonstrated here for a few examples. Keywords: one-dimensional quantum potentials, numerical solutions, computational methods, Schrödinger equation.
This paper describes the development of the virtual scenography for the opera for choir, narrator... more This paper describes the development of the virtual scenography for the opera for choir, narrator and live electronics AMeninadaGotinhabyA ́guabyMiguelAzguime.Theoperawas commissioned by the Ecomuseu Municipal de Seixal. The world premier was on December 21st at Cinema Sa ̃o Jorge, Lisbon - Portugal. The virtual scenography was developed in a part- nership between Miso Music Portugal and CITAR (Center for Investigation of Art and Technology of the Portuguese Catholic University), with the intention of substituting the traditional lightnings and scenography systems with projections and also for introducing an interactive aspect for the visual content of the stage. The final visual result was a composition of pre-edited videos, real-time interactive animations and pre-made children drawings that were made interactive. The interaction was divided in two parts: a master controller software with graphical user interface and two Reactables (Reactable Live!)[5] with custom software, through which, six children could control images and real-time effects. We conclude that the dialog between the music, choreography and scenography was enhanced by the use of an interactive virtual scenography. Designing the live visuals to highlight each key moment of the musical and literal text potentialized the general understanding and appreciation of the opera by the public.