TitlePlaying with cases: Tempo Transformations of Jazz Performances using Case-Based Reasoning
Publication TypeConference Paper
Year of Publication2007
Authorsde Mántaras RLópez, Grachten M, Arcos JLluis
Conference Name20th FLAIRS Conference, Key West, Florida
PublisherAAAI Press

The research described here focuses on global tempo transformations of monophonic recordings of saxophone jazz performances. 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. That is, listeners should not be able to notice, from the expressivity of a performance, that has been scaled up or down from another tempo. 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 we show that our approach is superior to UTS.