Drysdale, JakeHockman, JasonRamires, AntónioSerra, Xavier2023-03-012023-03-012022Drysdale J, Hockman J, Ramires A, Serra X. Improved automatic instrumentation role classification and loop activation transcription. In: Evangelista G, Holighaus N, editors. Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22); 2022 Sep 6-10; Vienna, Austria. [Vienna]: DAFx; 2022. p. 264-71.2413-6700http://hdl.handle.net/10230/55991Comunicació presentada a 25th International Conference on Digital Audio Effects (DAFx20in22), celebrat del 6 al 10 de setembre de 2022 a Viena, Àustria.Many electronic music (EM) genres are composed through the activation of short audio recordings of instruments designed for seamless repetition—or loops. In this work, loops of key structural groups such as bass, percussive or melodic elements are labelled by the role they occupy in a piece of music through the task of automatic instrumentation role classification (AIRC). Such labels assist EM producers in the identification of compatible loops in large unstructured audio databases. While human annotation is often laborious, automatic classification allows for fast and scalable generation of these labels. We experiment with several deep-learning architectures and propose a data augmentation method for improving multi-label representation to balance classes within the Freesound Loop Dataset. To improve the classification accuracy of the architectures, we also evaluate different pooling operations. Results indicate that in combination with the data augmentation and pooling strategies, the proposed system achieves state-of-the-art performance for AIRC. Additionally, we demonstrate how our proposed AIRC method is useful for analysing the structure of EM compositions through loop activation transcription.application/pdfeng© 2022 Jake Drysdale et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, adaptation, and reproduction in any medium, provided the original author and source are credited.Instrumentació i orquestracióClassificació automàticainfo:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/openAccess