Ph. D.This thesis traces an idea of auditory influence or sonorous individuation through three distinct areas of sound-art practice. These three areas are discussed according to a kind of spatial contraction, passing from the idea of auditory influence in acoustic ecology and field recording practices, to its expression in work happening at the intersection of soundart and architecture, and finally towards headphonic space and the interior of the body. Through these diverse fields and divergent practices a common idea pertaining to the influence of the auditory upon listening subjects is revealed, which itself brings up questions concerning the constitution of a specifically auditory subjectivity in relation to the subject ‘as a whole’. ...