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Encyclopedia of Database Systems pp 1–8Cite as

Audio Representation

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Synonyms

Audio characterization; Audio feature extraction

Definition

An audio signal is a signal that contains information in the audible frequency range. Audio representation refers to the extraction of audio signal properties, or features, that are representative of the audio signal composition (both in temporal and spectral domain) and audio signal behavior over time. Feature extraction is typically combined with feature selection, through which the best set of features for the intended operation on the audio signal is defined.

Historical Background

Audio feature extraction typically leads to a strongly reduced audio signal representation. Obtaining such representation can improve the efficiency of audio processing and benefit many applications based on such processing. For example, a compact representation of an audio signal in the form of a fingerprintcan enable extremely fast search for a match between this signal and a large-scale audio database for the purpose of audio signal...

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Recommended Reading

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Author information

Authors and Affiliations

  1. Microsoft Research Asia, Beijing, China

    Lie Lu

  2. Delft University of Technology, Delft, The Netherlands

    Alan Hanjalic

Authors
  1. Lie Lu
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  2. Alan Hanjalic
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Corresponding author

Correspondence to Lie Lu .

Editor information

Editors and Affiliations

  1. Georgia Institute of Technology College of Computing, Atlanta, Georgia, USA

    Ling Liu

  2. University of Waterloo School of Computer Science, Waterloo, Ontario, Canada

    M. Tamer Özsu

Section Editor information

  1. Dept. of Computer Science, New Jersey Inst. of Technology, University Heights, 7102, Newark, NJ, USA

    Vincent Oria

  2. Digital Content and Media Sciences ReseaMultimedia Information Research Division, National Institute of Informatics, Tokyo, Japan

    Shin'ichi Satoh

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© 2016 Springer Science+Business Media LLC

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Lu, L., Hanjalic, A. (2016). Audio Representation. In: Liu, L., Özsu, M. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4899-7993-3_1442-2

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  • DOI: https://doi.org/10.1007/978-1-4899-7993-3_1442-2

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  • Publisher Name: Springer, New York, NY

  • Online ISBN: 978-1-4899-7993-3

  • eBook Packages: Springer Reference Computer SciencesReference Module Computer Science and Engineering

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