This article presents some tools and methods to carry out transcriptions of electroacoustic music. It introduces the relationship between sound analysis and image or drawing at the birth of electroacoustic music and explains the interest of creating transcriptions. The article contains a proposed framework, based on several years of practice, which links musical analysis to transcription, sound analysis and representation. The different parts of a transcription are then detailed and methods are proposed to create annotations with reference to various examples I have created since the late 1990s. The last section presents the EAnalysis package, developed with Simon Emmerson and Leigh Landy at Leicester's De Montfort University, in order to create a tool for analyzing, transcribing and representing electroacous-tic music. It introduces the interface, the architecture and the transcription features of this piece of software in relation to other technologies.