Melodic characterization of monophonic recordings for expressive tempo transformations
|Title||Melodic characterization of monophonic recordings for expressive tempo transformations|
|Publication Type||Conference Paper|
|Year of Publication||2003|
|Authors||Gómez, E., Grachten M., Amatriain X., & Arcos J. L.|
|Abstract||The work described in this paper aims at characterizing tempo changes in terms of expressivity, in order to develop a transformation system to perform expressive tempo transformations in monophonic instrument phrases. |
For this purpose, we have developed an analysis 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 coresponding 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 characterization.
In this paper, we first describe which are the acoustic features that have been used for this characterization 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. Results are finally presented and discussed.