A Roughness Model Implementation to Analyze Sound Mass Composition: A Case Study in Ligeti’s Continuum for Harpsichord (1968)

  • Micael Antunes Universidade Estadual de Campinas
  • Guilherme Feulo do Espírito Santo Universidade de São Paulo
  • Jônatas Manzolli Universidade Estadual de Campinas


We present in this paper an implementation of a roughness descriptor based on the model of Pantelis Vassilakis. We apply the implemented descriptor to perform a computer-aided musical analysis of György Ligeti’s Continuum for harpsichord (1968). Our analysis establishes a parallel between the roughness model, concepts of sound mass composition, and Ligeti’s ideas of timbre of movement and permeability. As a result, we display a graphical representation for the roughness present in the Continuum’s recording, propose a formal segmentation for the piece, and analyze its formal development from a musicological point of view.

Palavras-chave: Computational Musicology, Music Perception, Psychoacoustics, and Cognition


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ANTUNES, Micael; ESPÍRITO SANTO, Guilherme Feulo do; MANZOLLI, Jônatas. A Roughness Model Implementation to Analyze Sound Mass Composition: A Case Study in Ligeti’s Continuum for Harpsichord (1968). In: SIMPÓSIO BRASILEIRO DE COMPUTAÇÃO MUSICAL (SBCM), 18. , 2021, Recife. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2021 . p. 82-87. DOI: https://doi.org/10.5753/sbcm.2021.19430.