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CI EREC Linux Audio Conference 2017 Conferences - Workshops- Concerts - Installations May 18-21, 2017 Saint-Etienne University Proceedings Foreword Welcome to Linux Audio Conference 2017 in Saint-Etienne! The feld of computer music and digital audio is rich of several well-known scientifc conferences. But the Linux Audio Conference is very unique in this landscape! Its focus on Linux-based (but not only) free/open-source software development and its friendly atmosphere are perfect to speak code from breakfast to late at night, to demonstrate early prototypes of software that still crash, and more generally to exchange audio and music related technical ideas without fear. LAC offers also a unique opportunity for users and developers to meet, to discuss features, to provide feedback, to suggest improvements, etc. LAC 2017 is the frst edition to take place in France. It is co-organized by the University Jean Monnet (UJM) in Saint-Etienne and GRAME in Lyon. GRAME is a National Center for Music Creation, an institution devoted to contemporary music and digital art, scientifc research, and technological innovation. In 2016 the center hosted 26 guest composers and artists, produced 88 musical events and 25 exhibitions in 20 countries. GRAME is the organizer of the Biennale Musiques en Scène festival, one of France’s largest international festival of contemporary and new music with guest artists ranging from Peter Eötvös, Kaija Saariaho, Michael Jarrell, Heiner Goebbels, Michel van der Aa, etc. GRAME develops research activities in the feld of real-time systems, music representation, and programming languages. Since 1999 all software developed by GRAME are open source and in most cases multiplatform (Linux, macOS, Windows, Web, Android, iOS, ...). UJM is part of the University of Lyon, a consortium of higher-education and research institutions located within the two neighboring cities of Lyon and Saint-Étienne. The University of Lyon-Saint- Etienne is the main French higher-education and scientifc center outside the Paris metropolitan area, composed of 4 public universities, 7 high schools (grandes écoles) and the CNRS (the French National Center for Scientifc Research), forming a group of 12 member institutions. The University of Lyon also assembles 19 associated institutions, offering specifc disciplinary training programs. Altogether, the Université de Lyon regroups 137,600 students and 168 public laboratories. The Université Jean Monnet (UJM), founded in 1969, is a comprehensive university enrolling some 20,000 students, about 15% international students from 111 countries. A high proportion of international students come from Africa and Asia. The university is composed of 5 faculties (arts, letters and languages, humanities and social sciences, law, sciences and technology, and medicine), four institutes: Institut Supérieur d’Economie d’Administration et de Gestion, Telecom Saint-Etienne, and University Institutes of Technology (IUTs) in Saint-Etienne and Roanne. The CIEREC is a research center devoted to the feld of contemporary expression, which brings together professors, researchers and PhD students in aesthetics and sciences of art, plastics arts, design, digital arts, literature, linguistics and musicology. Its main feld is the arts and literature of the twentieth and twenty-frst centuries. The Music Department offers graduate, post-graduate and doctoral training in music and musi- cology. In the feld of technologies, it proposes, since 2011, a Professional Master's Degree in Computer Music (RIM) that is unique in France, in collaboration with GRAME, with the main audio production studio of Saint-Etienne (Le FIL) and with the National Superior Conservatory of Music in Lyon. In 2016, we have created another Professional Master for Digital Arts (RAN). The Professional Masters of RIM & RAN are aimed at developing students’ applied knowledge and understanding of electronic and digital technologies for the creation and they prepare to the professions of "Producer in Computer Music (RIM - Réalisateur en Informatique Musicale) and in Digital Arts (RAN - Réalisateur en Arts Numériques). These producers are direct actors in musical and artistic productions, and they are at the interface between software developers, applied computer scientists, composers, artists ... and all people likely to integrate video, image and sound in their activities. Most courses are available in English (see http://musinf.univ-st-etienne.fr/indexGB.html). Thanks to all the contributors who submitted papers and proposed workshops, installations and music, we will have a very interesting and varied program at the conference. We are pleased to welcome, over a period of 4 days, some twenty conferences on various subjects with speakers from different backgrounds and countries. We'd like to thank all those who contribute to the realization of this edition, and especially Albert Gräf, Philippe Ezequel, Jean-François Minjard, Stéphane Letz, Lionel Rascle, Thomas Cipierre, Sébastien Clara, Landrivon Philippe, David-Olivier Lartigaud, Jean-Jacques Girardot, Martine Patsalis, Nadine Leveque-Lair and all the reviewers and members of the scientifc and artistic committees. Thanks to our partners who helped to fnance this conference : the CIEREC, GRAME, Masters RIM & RAN, the UJM Music and Arts Departments, The Arts, Lettres, Langues Faculty, Random-Lab at ESADSE (Art School of Saint-Etienne), Le Son des Choses, Electro-M, IDjeune, the Commission Sociale et Vie Etudiante at l’UJM. LAC 2017 has been also partially funded by the FEEVER project [ANR-13-BS02-0008] supported by the Agence Nationale pour la Recherche. We hope that you will enjoy the conference and have a pleasant stay in Saint-Etienne! Vincent Ciciliato, Yann Orlarey et Laurent Pottier LAC 2017 Teams Organizers • CIEREC (Centre Interdisciplinaire d’Étude et de Recherche sur l’Expression Contemporaine), director: Danièle Méaux, directors of the Electronic Team: Laurent Pottier & Vincent Ciciliato • Music Department of Jean Monnet University (UJM), director: Anne Damon-Guillot • GRAME (National Center for Musical Creation), director: James Giroudon, scientifc director: Yann Orlarey • Random-Lab, Center for Open Researches in Art, Design and New Media at ESADSE (Art School of Saint-Etienne), director: David-Olivier Lartigaud • Association « Le son des choses » (Acousmatic Music) • Association « Electro-M » (Masters RIM RAN students) Organizing committee • Vincent Ciciliato, Lecturer (Digital Arts) at CIEREC (UJM) • Thomas Cipierre, PhD student (Musicology) at CIEREC (UJM) • Sébastien Clara, PhD student (Musicology) at CIEREC (UJM) • Philippe Ezequel, Lecturer (Computer Sciences) at CIEREC (UJM) • Jean-Jacques Girardot, Programmer (Computer Sciences) at Le son des Choses • Stéphane Letz, Researcher at GRAME • Philippe Landrivon, Audiovisual technician, ALL faculty (UJM) • David-Olivier Lartigaud, Director of Random-Lab (ESADSE) • Jean-François Minjard, Composer at Le Son des Choses • Yann Orlarey, Scientifc director of GRAME • Laurent Pottier, Lecturer (Musicology) at CIEREC (UJM) • Lionel Rascle, Professor (Musical School – St Chamond & Rive de Giers) Scientifc committee • Fons Adriaensen • Marije Baalman • Tim Blechmann • Alain Bonardi • Ivica Ico Bukvic • Guilherme Carvalho • Vincent Ciciliato • Thierry Coduys • Myriam Desainte–Catherine • Goetz Dipper • Catinca Dumitrascu • Philippe Ezequel • John Fftch • Dominique Fober • Robin Gareus • Albert Gräf • Marc Groenewegen • Florian Hollerweger • Madeline Huberth • Jeremy Jongepier • Pierre Jouvelot • David-Olivier Lartigaud • Victor Lazzarini • Stéphane Letz • Fernando Lopez-Lezcano • Kjetil Matheussen • Romain Michon • Frank Neumann • Yann Orlarey • Dave Phillips • Peter Plessas • Laurent Pottier • Miller Puckette • Elodie Rabibisoa • Lionel Rascle • David Robillard • Martin Rumori • Bruno Ruviaro • Funs Seelen • Julius Smith • Pieter Suurmond • Harry Van Haaren • Steven Yi • Johannes Zmölnig SUMMARY Special Guests Paul Davis -------------------------------------------------------------------------------------------- 1 Thierry Coduys -------------------------------------------------------------------------------------- 1 Conferences 1. OpenAV Ctrla: A Library for Tight Integration of Controllers by Harry Van Haaren -- 5 2. Binaural Floss - “ Exploring Media, Immersion, Technology by Martin Rumori ------- 13 3. A versatile workstation for the diffusion, mixing and post-production of spatial audio by Thibaut Carpentier ------------------------------------------------------------------------------ 21 4. Teaching Sound Synthesis in C/C++ on the Raspberry PI by Henrik Von Coler, David Runge. ---------------------------------------------------------------------------------------- 29 5. Open Signal Processing Software Platform for Hearing Aid Research (openMHA) by Tobias Herzke, Hendrik Kayser, Frasher Loshaj, Giso Grimm, Volker Hohmann --------- 35 6. Towards dynamic and animated music notation using INScore by Dominique Fober, Yann Orlarey, Stéphane Letz ---------------------------------------------------------------------- 43 7. 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