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The AMR-NB Voice Codec Reduces the Listener’s Capacity to Recall Speech
Ericsson Research, Sweden.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.ORCID iD: 0000-0002-7048-523x
Engineering psychology, University of Gävle.
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.

Place, publisher, year, edition, pages
S. Hirzel Verlag , 2018. Vol. 104, no 3, p. 381-384
National Category
Media and Communication Technology Fluid Mechanics and Acoustics
Research subject
Engineering Acoustics
Identifiers
URN: urn:nbn:se:ltu:diva-68372DOI: 10.3813/AAA.919181ISI: 000434942500001OAI: oai:DiVA.org:ltu-68372DiVA, id: diva2:1197961
Funder
Swedish Foundation for Strategic Research , SM13‐0074
Note

Validerad;2018;Nivå 2;2018-06-28 (andbra)

Available from: 2018-04-16 Created: 2018-04-16 Last updated: 2018-06-28Bibliographically approved

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Publisher's full texthttps://www.ingentaconnect.com/content/dav/aaua/pre-prints/content-hirzel_aaua_104-3-381#

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Nykänen, Arne

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
  • html
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  • asciidoc
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