Aural analysis is a means towards a greater understanding of musical content and structure without the use of a prescriptive score, relying instead upon the listening experience of the person(s) investigating the work. In electroacoustic music, most work exists without a prescriptive score. Aural analysis is a means of identifying general aspects as well as specific detail of a given (recorded) work. It normally involves repeated listening for confirmation.
Bibliography: Delalande, François (2002). Eine Musik ohne Noten: Einführung in das Hören und Analysieren elektroakustischer Musik