In this bachelor thesis in the field of artistic research, the author’s aim was to gain practical and experience-based knowledge on how to access their inner voice in the process of composing notated contemporary music. The theoretical framework was obtained from theories on compositional craft, composers’ voice and a concept from the rhetoric, mimesis, was used as a model for the approach to creating composition exercises. The procedure of the bachelor thesis started with semi-structured interviews with four professional composers, who were asked about their compositional processes. Based on the results of the interviews, a composition exercise, called mimesis-exercise, was created for each of the interviewee, and then performed by the author. After each mimesis-exercise was finished, a reflective evaluation on the process was written.  A summary of each interview is presented in the implementation and detailed descriptions on how the compositional process was conducted for each of the four mimesis-exercises are presented in the results part. The artistic production of the bachelor thesis consists of five new pieces, each composed for one of the ensembles: SATB-choir, string ensemble, organ (two pieces), and solo trombone. The four research questions were answered through a thematic analysis and reflective texts.   The conclusions made during the process of the bachelor thesis was that the author experienced an enhanced understanding and connection to both the compositional process and the sounding material produced. The experience of composing, both the pieces which was part of the project, but especially those composed close after the thesis’s end, was more emotional and personal than the author experienced before the start of the bachelor thesis. The author reflected on how her development and discovering of her compositional voice was made through the procedure of the mimesis-exercises. The conclusive texts of the bachelor thesis add accounts for experience-based and personal perspectives to previous research on composer’s voice.

Mémoire en recherche-création ; Aide financière octroyée : CIRMMT Student Award / Les conditions d'utilisation de théories scientifiques au cours du processus de composition musicale et plus généralement pour l'élaboration de théories esthétiques musicales sont au coeur du travail proposé. Une position critique est tout d'abord avancée relativement aux nombreux écueils historiques relevés. Elle permet d'en dégager quelques pistes d'exploration pour les processus compositionnels que je me suis proposé de suivre au fur et à mesure des pièces électroacoustiques et mixtes présentées. En particulier, des spécificités empruntées aux mécanismes vibratoires non-linéaires, aux modèles sociologiques déterministes ou prédictifs sont injectés au sein même des processus de création des mes oeuvres. Cinq pièces sont présentées. Les thématiques et les contraintes occasionnées par les modèles empruntés sont décrits ainsi que les réalisations techniques qui leur ont servi de support. Chaque pièce présente donc une démarche et des outils technologiques et informatiques particuliers. Ces pistes exploratoires feront intervenir contrainte formelle, limitation du contrôle du compositeur, improvisation, traitement et spatialisation en temps réel et développements originaux implémentés en Max/MSP et en Python. Par ailleurs, un outil d'aide à la composition spatiale proposant une perspective inédite de visualisation du champs de pression produit par les trajectoires et par le système de reproduction virtuel, et développé pendant ma maîtrise est présenté. / The use of science theories during the compositionnal process, especially in a purpose of esthetical properties abstraction is questionned. First, a criticist point-of-vue is adressed, on the basis of several historical examples. A personnal method dedicated to the development of original compositionnal process were deduced. In particular, the specific mecanisms related to nonlinear vibrations and deterministic sociological model could be inserted into the creative processes. Five electroacoustic and contemporay music pieces are presented. Themes and constraints provoked by the model insertion are detailed. They gather form-contraints, control limitations, improvisation, real-time processing and real-time spatialization implemented in Max/MSP and Python. Moreover, a refined sound-field rendering tool dedicated to computer-assisted composition is introduced.