Meu profundo agradecimento ao meu orientador o Prof. Dr. Zhao Liang pelas recomendações, paciência e ajudas prestadas durante o desenvolvimento da tese; à agência de fomento CAPES 1 pelo apoio financeiro recebido e a Daiana Ellen Canato por todo o amor, carinho, apoio e compreensão. Um especial agradecimento ao Prof. Dr. Emmanuel Vincent e Prof. Dr. Frédéric Bimbot do grupo de pesquisa METISS do INRIA da Universidade de Rennes 1 na França, pelo convite, parceria, e colaboração durante o meu estágio de pesquisa nessa universidade; e à Sra. Mariannick D. Laurent, pelo recebimento, atenção, orientação e amizade durante minha estadia em Rennes. Agradeço também ao pessoal do laboratório de Computação Bioinspirada (BioCom), especialmente a Bilzã Araújo, Filipi Neto Verri, Paulo Andretta Jaskowiak, Danilo Horta, Thiago Cupertino e Lilian Berton, pela resolução de dúvidas e colaborações eventuais; e à Prof.ª Dr.ª Roseli A. Francelin Romero, que me motivou a publicar os primeiros resultados desta tese e à minha colega Dr.ª Débora Cristina Corrêa por alguns dos tópicos que inspiraram esta pesquisa e pelo trabalho em coautoria; por fim, também agradeço a Julio César Herrera (Don Julio),
he theremin is one of the first elec- tronic musical instruments and one of the few played without physical contact since it only re- quires hand and finger movements to control the amplitude and frequency of the musical note. However, the capacitive functioning of the anten- nas increases the sensitivity to electrical interfer- ence, its timbre is fixed, and the frequency an- tenna's vertical arrangement could limit the use of people with amputated fingers. Furthermore, it does not contain any help to guide the execu- tion, which makes it a very difficult instrument to play. In this paper, we present the development of a digital optical theremin with an audio syn- thesis process, intuitive graphical interface, frequency antenna in the horizontal position, and linearization of the frequency-distance relationship. These features are intended to aid learn- ing and interpretation of the instrument and ex- tend access to people with finger limitations. In order to validate the instrument's behavior and characteristics, we conducted three experiments: 1) accuracy analysis of the linearization through the mean absolute error in units of cents and the Kruskal-Wallis statistical inference test, 2) val- idation of the steps of the audio synthesis mod- ule, and 3) checking of the timbral diversity, both through the Fourier spectrum. This prototype could be used as an auxiliary tool in musical initi- ation and the development of musical perception.
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