Dimitrios Margounakis

MEL-IRIS: An Online Tool for Audio Analysis and Music Indexing

Chroma is an important attribute of music and sound, although it has not yet been adequately defined in literature. As such, it can be used for further analysis of sound, resulting in interesting colorful representations that can be used in many tasks: indexing, classification, and retrieval. Especially in Music Information Retrieval (MIR), the visualization of the chromatic analysis can be used for comparison, pattern recognition, melodic sequence prediction, and color-based searching. MEL-IRIS is the tool which has been developed in order to analyze audio files and characterize music based on chroma. The tool implements specially designed algorithms and a unique way of visualization of the results. The tool is network-oriented and can be installed in audio servers, in order to manipulate large music collections. Several samples from world music have been tested and processed, in order to demonstrate the possible uses of such an analysis.

Emulation of ancient greek music using sound synthesis and historical notation

Music Using Sound Synthesis and Historical Notation Dionysios Politis,∗ Dimitrios Margounakis,∗ Spyridon Lazaropoulos,∗ Leontios Papaleontiou,∗ George Botsaris,∗ and Konstantinos Vandikas† ∗Multimedia Lab, Department of Informatics Aristotle University of Thessaloniki, University Campus GR-541 24 Thessaloniki, Greece {dpolitis, dmargoun}@csd.auth.gr lspiros1980@yahoo.gr leontiosp@yahoo.com geobotsar@hotmail.com †Computer Science Department, University of Crete P.O. Box 2208 Heraklion, Crete, GR-714 09 Greece vandikas@ics.forth.gr

Mobile Communications Technologies Impact on Radio Frequency Broadcasts

This research examines how regulatory action by policy makers and the states involved may reshape the map of terrestrial television and radio broadcasts, not only in Greece, who serves as a case study, but for many countries who face similar problems. Taking as starting point the recent licensing competition this paper provides suggestions about how deregulating may be the amalgam of technologies that mix free on-line media providers with expensive, state regulated public goods in the frequency domain.

Spatial, Kinaesthetic and Bodily Chromaticism

This paper extends the notion of chromaticism for the actual performance scenery. In contemporary staged performances, singers not only chant but they also move around, while the theatrical scenery is dynamically recreated with advanced audiovisual components. The lighting components interplay with streaming components, urging for kinaesthetic and bodily communication with audiences. As interaction increases, the notion of “live performance” is enhanced with ubiquitous and mobile communication components. Thus, an augmented sphere of interaction is created, for both in situ and remote participants. The production terms of such performances are contested under the prism of liturgical practices in diachrony and advances in mobile technology in our synchrony.

Chromatic Reconstruction and Musical Aberration: a survey into the Brain Synapses of Musicality

A long issue in music representation is the transforming mechanism between music and colors. As music promotes itself as the basis on which audiovisual arts are fostered, a practical method for correlating music performance with its visual surroundings is needed. This paper describes how our brain detects and allures music in a two dimensional visual space, and how the color superimposition may reversely lead to music production.