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By Uffe K. Wiil

This ebook constitutes the completely refereed post-proceedings of the foreign computing device tune Modeling and Retrieval Symposium, CMMR 2003, held in Montpellier, France, in may possibly 2003.

The 20 revised complete papers have been rigorously chosen in the course of rounds of reviewing and development. end result of the interdisciplinary nature of the realm, the papers deal with a large number of issues together with details retrieval, programming, human-computer interplay, electronic libraries, hypermedia, man made intelligence, acoustics, sign processing, etc.  The publication comes with a CD-ROM providing supplementary fabric for the papers included.

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Extra info for Computer music modeling and retrieval: International Symposium, CMMR 2003, Montpellier, France, May 26-27, 2003: revised papers

Example text

Such step is performed by the Symbolic Music Code Extractor Module (Figure 3b). The conversion uses a Pitch-Tracking algorithm [19] based on conventional frequency-domain analysis. If the input is entered from a keyboard or it is a score fragment, conversion is not necessary and the sequence can be directly built. The Symbolic Music Code Extractor converts acoustic input into a score-like representation, using the same notation used to represent music scores into the MAIS database. Hence, comparing the input with a given score has been reduced to string matching - recall that, for efficiency’s sake, matching is not performed on the whole score, but on the source patterns only.

In six of the cases the estimated BPM value matched the human estimate, while in the remaining four cases, the algorithm estimate was half that of the human estimate. The problem of not estimating the right multiple of BPM is reported elsewhere [3], however, it is worth noting that in the case of controlling the tempo of the music, it is of primary importance to have a stable output. In addition, informal use of the system in real-time audio conducting [7], DJ beat matching and tempo control [6] has shown that the beat estimation is stable for a large variety of music styles.

G. [1–3]): Firstly, perceptive values are associated to a set signal of from a reference database. These values can be obvious (Presence of singing voice), or can require to conduct perceptive tests (Evaluation of the global energy of music titles): humans are asked to enter a value for a given descriptor, and then statistical analysis is applied, to find the average values, considered thereafter as a grounded truth. Secondly, several characteristics of the associated audio signals are computed.

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