TitleMelodic Characterization of monophonic Recordings for Expressive Tempo Transformations
Publication TypeConference Paper
Year of Publication2003
AuthorsGómez E, Grachten M, Amatriain X, Arcos JLluis
EditorBresin R
Conference NameStockholm Music Acoustics Conferences (SMAC'03)
PublisherKTH Speech , Music and Hearing
Pagination533 - 536

The work described in this paper aims at developing a system that could perform expressive tempo transformations in monophonic instrument phrases. We have first developed a melodic description tool that extracts a set of acoustic features from monophonic recordings. This set of features is structured and stored following a description scheme that is derived from the current MPEG-7 standard. These performance descriptions are then compared with their corresponding scores, using edit distance techniques, for automatically annotating the expressive transformations performed by the musician. Then, these annotated performance descriptions are incorporated in a case-based reasoning (CBR) system in order to build an expressive tempo transformations case base. The transformation system will use this CBR system to perform tempo transformations in an expressive manner. Saxophone performances of jazz standards played by a professional performer have been recorded for this study. In this paper, we first describe which are the melodic features that have been extracted and how they are structured and stored. Then, we explain the analysis methods that have been implemented to extract this set of features from audio signals and how they are processed by the CBR system.