Diss.--Universität Bayreuth, 2002. / Bibliogr. p. 337-348.

Tomáš Marek Intercultural mediation of music Abstract The thesis concerns in intercultural transmissing of music between Guinea and Czech Republic. I have dealt with traditional way of transmissing music in Guiney in my bachelor work but how is music transmissed interculturaly from local masters to the musicians from totally different culture? Besides the main goal this thesis concerns measure of how Guinean music production influences Czech musical production and how local ways of teaching foreigners the Guinean music influence the ways of teaching such music in the Czech Republic. It is based on semi-structured interviews with three professional musicians from the Czech Republic and Australia.

abstract: The tradition of building musical robots and automata is thousands of years old. Despite this rich history, even today musical robots do not play with as much nuance and subtlety as human musicians. In particular, most instruments allow the player to manipulate timbre while playing; if a violinist is told to sustain an E, they will select which string to play it on, how much bow pressure and velocity to use, whether to use the entire bow or only the portion near the tip or the frog, how close to the bridge or fingerboard to contact the string, whether or not to use a mute, and so forth. Each one of these choices affects the resulting timbre, and navigating this timbre space is part of the art of playing the instrument. Nonetheless, this type of timbral nuance has been largely ignored in the design of musical robots. Therefore, this dissertation introduces a suite of techniques that deal with timbral nuance in musical robots. Chapter 1 provides the motivating ideas and introduces Kiki, a robot designed by the author to explore timbral nuance. Chapter 2 provides a long history of musical robots, establishing the under-researched nature of timbral nuance. Chapter 3 is a comprehensive treatment of dynamic timbre production in percussion robots and, using Kiki as a case-study, provides a variety of techniques for designing striking mechanisms that produce a range of timbres similar to those produced by human players. Chapter 4 introduces a machine-learning algorithm for recognizing timbres, so that a robot can transcribe timbres played by a human during live performance. Chapter 5 introduces a technique that allows a robot to learn how to produce isolated instances of particular timbres by listening to a human play an examples of those timbres. The 6th and final chapter introduces a method that allows a robot to learn the musical context of different timbres; this is done in realtime during interactive improvisation between a human and robot, wherein the robot builds a statistical model of which timbres the human plays in which contexts, and uses this to inform its own playing. / Dissertation/Thesis / Doctoral Dissertation Media Arts and Sciences 2016

Orientadores: Jônatas Manzolli, Fernando Augusto de Almeida Hashimoto / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Artes / Made available in DSpace on 2018-08-21T15:36:18Z (GMT). No. of bitstreams: 1 Campos_CleberdaSilveira_D.pdf: 5383709 bytes, checksum: 9fbbd1f6fb089fb64097a7c772db5d62 (MD5) Previous issue date: 2012 / Resumo: Dentro da linha de pesquisa de processos criativos voltados à composição e à improvisação por meios acústicos e tecnológicos, a Tese apresenta um estudo focado na aplicação de processos graduais e recursivos para gerar estruturas musicais no contexto da percussão mediada por suporte tecnológico. Do repertório para percussão vinculada à noção de Processo Gradual, conceito criado por Reich (1968), extraíram-se Modelos para Processos Criativos em Percussão (MPCP). O estudo pormenorizado desses modelos permitiu a articulação de nuances, detalhes e diferenças existentes nos processos graduais aplicados à percussão, aqui representada pelo instrumento africano Djembê. O processamento computacional permitiu identificar, organizar, controlar e expandir as diferenças presentes nas estruturas sonoras através da criação de uma Taxonomia de Gestos Musicais Interpretativos (TGMI). Analisou-se o espectrograma para medir as frequências características e as durações das ressonâncias do Djembê. Tais medições, relacionadas às características físicas e geométricas do instrumento e com a parametrização da TGMI, nortearam o desenvolvimento de processos de interação musical. Adotaram-se, ainda, outros dois componentes na metodologia de pesquisa: 1) Modelagem sonora pré-composicional em que amostras sonoras do Djembê foram gravadas, analisadas e relacionadas às possibilidades de controle por computador - procedimento realizado em tempo diferido. O processo de análise foi conduzido à aplicação sistemática dos MPCP em Estudos Recursivos para Improvisação em Tempo Real; 2) Oficinas de criação em que foram relacionados ciclos musicais aplicados ao Djembê e manipulados pela improvisação via programação em Pure Data (PD), em tempo real. Ao final, concluiu-se que o conceito de Processo Gradual de Reich, relacionado aos instrumentos de percussão, foi ampliado com a TGMI desenvolvida durante a pesquisa. O processamento computacional vinculado a recursividade permitiram a manipulação de nuances sonoras encontradas nas oficinas, que produziram novos modelos timbrístico texturais no contexto da performance musical mediada por processos tecnológicos / Abstract: This Thesis presents a research on creative processes focusing composition and improvisation with percussion instruments and technology. It is a study on an application of Music Gradual Processes and recursive structures to musical improvisation. More specifically, it studies works composed for percussion based on the notion of Gradual Process, a concept created by Reich (1968), and extract from them Models for Creative Processes in Percussion (MPCP). The detailed study of these models brought up the possibility of articulating the nuances, details, variations on gradual processes applied to percussion. Further, we apply these models in compositional studies for the African percussion instrument - Djembe. The recursive models enabled to organize, control and expand the variation sound structures through the development of a methodology for a Taxonomy of Interpretive Musical Gestures (TGMI) of the Djembe. We analyzed the spectrogram to measure characteristic frequencies and durations of resonances produced by the Djembe. Such quantitative measures, which are related to the physical and geometrical characteristics of this instrument, enabled musical interaction in real time. In addition to this quantitative analysis, research methodology was based on two other components: 1) Workshops where the Djembe sound samples were recorded, analyzed and related to control via digital technology - procedure performed off-line; 2) Workshops in which they were created music cycles applied to African percussion instruments and manipulated through improvisation, used to generate melodic textural profiles programmatically in Pure Data (PD), a procedure performed in real time. Then the analysis was conducted to a systematic development of recursive MPCP Studies for Improvisation in real time. The Thesis conclusion point out to: Reich's Gradual Process concept, related exclusively with percussion instruments, has been expanded with the TGMI and computer processing enabled creation of new models for timbre and textural improvisation and for studying musical performance mediated by digital technology / Doutorado / Processos Criativos / Doutor em Música