First steps toward embedding real-time audio computing in Antescofo

Nicolás Schmidt Gubbins 1, * Arshia Cont 2, 3 Jean-Louis Giavitto 4, 3
* Corresponding author
3 MuTant - Synchronous Realtime Processing and Programming of Music Signals
UPMC - Université Pierre et Marie Curie - Paris 6, IRCAM, CNRS - Centre National de la Recherche Scientifique, Inria de Paris
4 Repmus - Représentations musicales
STMS - Sciences et Technologies de la Musique et du Son
Abstract : The develop of Antescofo software has allowed contemporary musicians to create interactive music pieces in a more precise way in terms of the synchronization between human and machine. INRIA's MUTANT team has been developing a version of Antescof that changes the DSP computation paradigm and translates the responsibility to the software and no longer to the host environment. Thus, the composer gets more freedom t create his own effects. Plus, it allows the composer to change the sound link network in execution time. Also, the computational power required for the DSP is optimized. Lastly, this new version creates the possibility of generating a self-contained score for UDOO platform, creating this way the first steps toward the preservation of interactive musical pieces through time. In this article the context of the new version of Antescofo is presented, as well as the benefits of it. The methodology of compilation of the Faust DSP tool in Antescofo is described and a comparison of the profiling tests between the old and new versions is detailed. The results shows an improvement of about 46% in terms of the computational power needed to process the signals and they represent clear indicators of optimization that can be extended to the compilation of the Antescofo software for the UDOO platform.
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Nicolás Schmidt Gubbins, Arshia Cont, Jean-Louis Giavitto. First steps toward embedding real-time audio computing in Antescofo. Journal de Investigación de Pregado (Investigación, Interdisciplina, Innovación), Pontificia Universidad Católica de Chile, 2016, 6, ⟨http://web.ing.puc.cl/~ipre/site/journal⟩. ⟨hal-01257524⟩

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