Jayme's Research

Study results from Campinas State University update understanding of audio engineering.

Source: http://engineering.verticalnews.com/articles/1037451.html

2008 OCT 13 - (VerticalNews.com) -- "A flexible method to classify musical audio signals automatically into musical genres is introduced. The flexibility consists in assigning tip to three genres to a (given signal, taking into account that some musical signals can have elements from more than one genre," researchers in Campinas, Brazil report.

"The assigned genres are classified according to their influence over the signal. The technique divided the signals into 21.3-ms frames, from which four features are extracted. Some statistical results concerning the extracted features are collected along 1-s analysis segments, resulting in a 12-element vector by segment. Such vectors feed a classification procedure that 1) uses a wide and deep taxonomy. allowing a eticulous Comparison of different genres; 2) performs a pairwise comparison of genres, which allows emphasizing the differences between each pair of genres; 3) assigns, according to the information collected, the degree of influence of each genre over the signal: none, weak, or strong; and 4) performs the final classification, which is given by the genres that best fit the attributes of the signal together with their respective degrees Of influence. This procedure makes it possible to treat adequately the huge amount of songs influenced by or resulting from the fusion of two or more musical genres," wrote J.G.A. Barbedo and colleagues, Campinas State University.

The researchers concluded: "The approach has achieved good results with a relatively low computational effort."

Barbedo and colleagues published their study in the Journal of the Audio Engineering Society (Automatic musical genre classification using a flexible approach. Journal of the Audio Engineering Society, 2008;56(7-8):560-568).

For additional information, contact J.G.A. Barbedo, Campinas State University, FEEC, Dept. of Communicable, BR-13083852 Campinas, SP, Brazil.

Publisher contact information for the Journal of the Audio Engineering Society is: Audio Engineering Society, 60 E 42ND St., New York, NY 10165-2520, USA.

Keywords: Computational, Computers, SoftwareAudio Engineering, Campinas State University.