Seminars

Past talks

Speaker: Ivan Simurra
Date and time: Wednesday, December 2, 2015 - 12:00
Place: CCSL Auditorium, IME/USP
Abstract:

Within the research line in Creative Processes focused on music composition and computer-aided orchestration, this work describes an investigation into the instrumental combination process using a computing environment using audio descriptors in PureData (PD) and the PDescriptors library to analyze the sound characteristics of a database of audio files with various musical instruments and extended techniques.

The research relies mainly on three fundamental aspects: a) the study of audio descriptors as an analysis tool for computer-assisted musical orchestration; b) the analysis of works and procedures developed by composers who served as reference for the development of writing models; c) the creation of compositional studies, in which the orchestration hypotheses will be tested. From the study of audio descriptors as an analytical tool, item a, the next step focused on the generation of a universe of instrumental combinations described by their sonic characteristics. This procedure helps the decision making related to the orchestration and expanded techniques. Regarding item b, we used the audio descriptors to analyze the sound characteristics of the following works: the First Movement of the "Quattro Pezzi per Orchestra" by Giacinto Scelsi; three solo pieces "Guero", "Pression" and "Dal Niente - Interieur III", by Helmut Lachenmann; and "Reflections" by Jônatas Manzolli. As concerns the item c, we present a portfolio whose orchestral compositional planning was based on the dialogue between the results obtained from studies of audio descriptors with the analysis of the works of reference composers.

It is expected that the whole process of research reported here will contribute to developing knowledge in the field of computer-assisted musical orchestration, establishing a more refined blend of sound diversity as a method of combination of musical instruments and extended techniques.


(video presentation in portuguese)

Speaker: Thilo Koch
Date and time: Wednesday, November 18, 2015 - 12:00
Place: Auditório do CCSL, IME/USP
Abstract: No english abstract available.


(video presentation in portuguese)

Speaker: Prof. Dr. Jônatas Manzolli (NICS/UNICAMP)
Date and time: Wednesday, November 11, 2015 - 12:00
Place: CCSL Auditorium, IME/USP
Abstract: In the context of the study and development of computational systems for composition and interactive performance with multimodal content, this talk presents the ongoing research which aims at implementing a computational infrastructure for an Interactive Media and Digital Immersion Lab at NICS/Unicamp. The system under development at the Center of Autonomous Systems and Neurorobotics (NRAS) of the Universitat Pompeu Fabra (Barcelona, Spain) generates, controla and shares through the Internet a process for multimodal artistic creation. During this talk the overview of the work and the implemented model will be presented, and in the second part the results obtained from a prototype using VPN between the two Labs will be shown. This research has the support of FAPESP, grant 15/07084-0.


(video presentation in portuguese)

Speaker: Lucas Dário
Date and time: Wednesday, November 4, 2015 - 12:00
Place: Auditório do CCSL, IME/USP
Abstract: No english abstract available.


(video presentation in portuguese)

Speaker: Joseph Timoney, National University of Ireland - Maynooth
Date and time: Wednesday, October 21, 2015 - 12:00
Place: CCSL Auditorium, IME/USP
Abstract: An enhancing effect that can be applied to analogue oscillators in subtractive synthesizers is termed Animation, which is an efficient way to create a sound of many closely detuned oscillators playing in unison. This is often referred to as a supersaw oscillator. In this seminar we will explain the operating principle of this effect in the digital domain using a combination of additive and frequency modulation synthesis. The Fourier series will be derived and results will be presented to demonstrate its accuracy. This will then provide new insights into how other more general waveform animation processors can be designed. Audio examples from the isolated supersaw waveform and also within some dance music excerpts will illustrate the sound possibilities using the technique.

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