Date and time:
Venue: 10.08.04
Chair: Xiaodong Li
Abstract:
Content-based music information retrieval uses features extracted from music
to answer queries. For melodic queries, the two main features are the pitch and
duration of notes. The note pitch feature has been well researched whereas duration
has not been fully explored. In this paper, we discuss how the note duration
feature can be used to alter music retrieval effectiveness. Notes are
represented by strings called standardisations. A standardisation is designed for
approximate string matching and may not capture melodic information precisely.
To represent pitches, we use a string of pitch differences. Our duration
standardisation uses a string of five symbols representing the relative
durations of adjacent notes. For both features, the Smith-Waterman alignment is
used for matching. We demonstrate combining the similarity in both features
using a vector model. Results of our experiments in retrieval effectiveness
show that note duration similarity by itself is not useful for effective music
retrieval. Combining pitch and duration similarity using the vector model does
not improve retrieval effectiveness over the use of pitch on its own.
In addition to discussing the above paper, Sandra will report on the latest developments of the RMIT MIRT project, as well as recent efforts of the music retrieval community to run TREC-like evaluation experiments.
About the speaker:
Alexandra L. Uitdenbogerd is a lecturer in Computer Science at RMIT. Her main research interests are music information retrieval (MIR), computer-assisted language learning, and search engine technology. Currently she is supervising two PhD students with MIR research topics. In addition she sings, records, composes and occasionally plays an instrument in various musical genres.
Seminar Organisation
Seminars are free and open to the general public. No booking is necessary. If you are interested in giving a presentation in this seminar series, or to make suggestions for speakers, please contact Xiaodong Li, the seminar co-ordinator.