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Quellcodierung

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Handbuch der Audiotechnik

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Zusammenfassung

Zur Bitratenreduktion (Datenkomprimierung) eingesetzte Codierungsverfahren haben die Aufgabe, die benötigte Datenmenge zur Übertragung oder Speicherung von digitalen Signalen ohne Verlust oder mit möglichst geringem Qualitätsverlust zu verkleinern. Sie werden entweder aus ökonomischen Gründen wie der Kostenersparnis durch geringere erforderliche Übertragungsbandbreiten, oder aus technischen Gründen wie einem in der Größe beschränkten Speicherplatz oder eingeschränkten Übertragungskapazitäten eingesetzt. Codierungsverfahren finden Anwendung in Datennetzen wie beispielsweise dem Internet beim Multimediavertrieb von Musik und Filmen, bei Streamingdiensten und im Rundfunk, in Filmtheatern und in der Telekommunikation aber auch auf physikalischen Datenträgern wie DVD (Digital Versatile Disc), bei der Archivierung großer Datenmengen auf Festplatte und auf Speicherkarten in portablen Mediaplayern. Dieses Kapitel vermittelt die technischen Grundlagen der effizienten und gehörrichtigen Audiocodierung. Ergänzend werden einige gebräuchliche standardisierte Verfahren zur Messung der subjektiven Audioqualität erläutert. Desweiteren wird ein Überblick über gängige verlustlose und verlustbehaftete Audiocodierverfahren und ihre qualitative Einordnung gegeben.

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Author information

Authors and Affiliations

  1. International Audio Laboratories Erlangen, Erlangen, Deutschland

    Jürgen Herre

  2. Fraunhofer-Institut für Integrierte Schaltungen (IIS), Erlangen, Deutschland

    Sascha Disch

  3. Center for Music Technology, Georgia Institute of Technology, Atlanta, USA

    Alexander Lerch

Authors
  1. Jürgen Herre
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  2. Sascha Disch
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  3. Alexander Lerch
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Corresponding author

Correspondence to Sascha Disch .

Editor information

Editors and Affiliations

  1. Fachgebiet Audiokommunikation, Technical University of Berlin, Berlin, Deutschland

    Stefan Weinzierl

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Herre, J., Disch, S., Lerch, A. (2021). Quellcodierung. In: Weinzierl, S. (eds) Handbuch der Audiotechnik. Springer Vieweg, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-60357-4_34-1

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  • DOI: https://doi.org/10.1007/978-3-662-60357-4_34-1

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  • Print ISBN: 978-3-662-60357-4

  • Online ISBN: 978-3-662-60357-4

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