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The AMR-NB voice codec reduces the listener’s capacity to recall speech
Ericsson Research, Sweden.
Luleå University of Technology, Luleå Sweden.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Environmental psychology.
2018 (English)In: Acta Acoustica united with Acustica, ISSN 1610-1928, E-ISSN 1861-9959, Vol. 104, no 3, p. 381-384Article in journal (Refereed) Published
Abstract [en]

Modern telecommunication services generally use digital speech encoding. Speech encoding degrades the audio with compression and filters to make the data transmission more efficient. To keep conversations and on-line meetings productive and creative it is important that these digital services do not increase the cognitive load. Measuring effects on working memory is one way to estimate cognitive load of the listener. A test with 25 participants was performed to investigate the effects of using the AMR-NB codec, a standardized codec for mobile communication. The memory performance for spoken 12-word lists was measured and AMR-NB encoded speech was compared with unprocessed speech (LPCM 16 bit, 44.1 kHz). A within-subject analysis showed 9% lower recall rate for the AMR-NB coded speech. © 2018 The Author(s).

Place, publisher, year, edition, pages
S. Hirzel Verlag GmbH , 2018. Vol. 104, no 3, p. 381-384
Keywords [en]
Encoding (symbols), Signal encoding, Speech, Speech transmission, Telecommunication services, And filters, Cognitive loads, Digital services, Memory performance, Mobile communications, Speech encoding, Voice codecs, Working memory, Speech communication
National Category
Applied Psychology
Identifiers
URN: urn:nbn:se:hig:diva-26792DOI: 10.3813/AAA.919181ISI: 000434942500001Scopus ID: 2-s2.0-85047336226OAI: oai:DiVA.org:hig-26792DiVA, id: diva2:1213660
Available from: 2018-06-05 Created: 2018-06-05 Last updated: 2018-07-05Bibliographically approved

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Ljung, Robert

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CiteExportLink to record
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Citation style
  • apa
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  • modern-language-association-8th-edition
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  • Other style
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  • sv-SE
  • en-GB
  • en-US
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  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
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Output format
  • html
  • text
  • asciidoc
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