TempoExpress: An Expressivity-Preserving Musical Tempo Transformation System

Maarten Grachten, Josep Lluis Arcos, Ramon Lopez de Mantaras

The research described in this paper focuses on global tempo transformations of monophonic audio recordings of saxophone jazz performances. More concretely, we have investigated the problem of how a performance played at a particular tempo can be automatically rendered at another tempo while preserving its expressivity. To do so we have developed a case-based reasoning system called TempoExpress. The results we have obtained have been extensively compared against a standard technique called uniform time stretching (UTS), and show that our approach is superior to UTS.

Subjects: 1.1 Art And Music; 3.1 Case-Based Reasoning

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