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This paper is a comparative analysis between two digitally mediated live poetry performances: Frikativ by Jörg Piringer and This Loud by Amy X Neuburg. More specifically, I examine how these poets use digital technology in their live performances to challenge traditional notions of the human voice. My main argument is that their modes of exerting controlling over their voices ultimately serve similar purposes; those of establishing the voice as a relationship between speaker and listener, a phenomenon rather than a discreet object or bodily organ possible to observe on its own. This phenomenological point of view draws on Karen Barad’s concept of posthumanist performativity as well as on philosophical works on the voice, such as Mladen Dolar's A Voice and Nothing More. Moreover, I give an historical account of sound poetry, tape poetry and tape loops as they relate to Frikativ and This Loud. In this, I also discuss live-looping; a technique used by both Piringer and Neuburg and connect it to Gilles Deleuze's ideas of difference and repetition. Finally, Piringer's and Neuburg's works is compared based on how they attempt to control the voices-as-relations in their performances. My conclusion is that Frikativ constantly destabilizes the establishment and recognition of voice-as-relation. This Loud, due to the extensive and focused use of live-looping, does not destabilize as much as it multiplies the possible configurations of voices-as-relations.

Cette thèse porte sur le concept d’objet sonore, élaboré par le fondateur du mouvement esthétique nommé « musique concrète » : Pierre Schaeffer, auteur de plusieurs ouvrages consacrés à la perception du son dans une perspective musicale. A travers la généalogie de ce concept devenu très populaire en musique contemporaine, nous cherchons d’abord à montrer comment se construit une pensée esthétique originale par l’apport de modèles théoriques variés : sciences naturelles, linguistique, et surtout philosophie de la perception contemporaine – phénoménologie, structuralisme et théorie de la forme. Le concept d’objet sonore se construit en effet aussi bien par des gestes techniques – enregistrement et manipulation du son fixé, situation acousmatique – que par des gestes intellectuels radicaux – suspension de la référence au contexte d’émission du son, refus de la perspective de la physique acoustique, donc de l’explication du phénomène sonore au profit de sa description morphologique, étude généralisée de nos fonctions d’écoute (acoulogie). Cette appréhension du son « pour lui-même », qui se pense comme une application de l’épochè phénoménologique à l’écoute (écoute réduite) nous invite à penser les rapports ambigus pouvant se tisser entre une esthétique musicale particulière et la philosophie de la perception qu’elle convoque pour penser son objet. Plus généralement, ce travail vise donc à décrire le rôle d’une certaine philosophie de la perception dans l’émergence d’une appréhension plastique du phénomène sonore, phénomène qui résiste pourtant d’emblée à l’objectivation. / This doctoral dissertation focuses on the concept of sound object, coined by the founder of the “musique concrète” aesthetic movement Pierre Schaeffer – who wrote several essays dedicated to the perception of sound within a musical perspective. In studying the genealogy of this concept which has become very popular in contemporary music, we first wish to show how the reunion of varied theoretical models helps to build an original aesthetic reflection – natural science, linguistics, and above all the philosophy of contemporary perception (phenomenology, structuralism and Gestalt theory). Indeed, the concept of sound object is the result of both technical gestures – recording and manipulation of the recorded sound, acousmatic situation – and intellectual and radical moves such as the absence of reference to the context of sound production, the refusal to use the theoretical frame of acoustic physics (thus enabling the morphological description of the sound phenomenon to take precedence over the explanation of such phenomenon), the general study of our listening functions (acoulogy). Such perception of the sound “for itself” is to be viewed as the application of the phenomenological epoché to the listening activity (reduced listening), and leads us to consider the ambiguous relationships between a particular musical aesthetics and the philosophy of perception required to analyse its object. More generally, our study thus intends to describe the role played by a certain philosophy of perception in the appearance of a plastic perception of the sound phenomenon, though such phenomenon initially resists objectification.