NDLI: An efficient method for the unsupervised discovery of signalling motifs in large audio streams

Content Provider	IEEE Xplore Digital Library
Author	Muscariello, A. Gravier, G. Bimbot, F.
Copyright Year	2011
Description	Author affiliation: IRISA (CNRS & INRIA) Rennes (Muscariello, A.; Gravier, G.; Bimbot, F.)
Abstract	Providing effective tools to navigate and access through long audio archives, or monitor and classify broadcast streams, proves to be an extremely challenging task. Main issues originate from the varied nature of patterns of interest in a composite audio environment, the massive size of such databases, and the capability of performing when prior knowledge on audio content is scarce or absent. This paper proposes a computational architecture aimed at discovering occurrences of repeating patterns in audio streams by means of unsupervised learning. The targeted repetitions (or motifs) are called signalling, by analogy with a biological nomenclature, as referring to a broad class of audio patterns (as jingles, songs, advertisements, etc…) frequently occurring in broadcast audio. We adapt a system originally developed for word discovery applications, and demonstrate its effectiveness in a song discovery scenario. The adaption consists in speeding up critical parts of the computations, mostly based on audio feature coarsening, to deal with the large occurrence period of repeating songs in radio streams.
Starting Page	145
Ending Page	150
File Size	142451
Page Count	6
File Format	PDF
ISBN	9781612844329
ISSN	19493991
e-ISBN	9781612844336
e-ISBN	9781612844312
DOI	10.1109/CBMI.2011.5972536
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-13
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Accuracy Heuristic algorithms Computer architecture Search problems Speech Libraries Pattern matching
Content Type	Text
Resource Type	Article

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