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Comparison of the Effects on Memory Tasks of Babble and Broadband Noise

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Abstract

The comparative effects on both working memory and recognition memory of the same A-weighted noise levels of background noise, typically of that present in many transportation work areas, were investigated (55 and 65 dBA). One noise was a babble, multi-talker incomprehensible speech and representative of the many work areas dealing with administrative tasks. The other noise was broadband and similar to services and machinery noise. Forty participants, half non-native English speakers, were asked to complete three different working memory tests (linguistics, grammatical reasoning and mathematics) and one recognition memory test (cued recall) in the presence of the two types of noise at the two different levels. Broadband noise at 65 dBA was found to adversely affect recall by as much as 15%. The native language advantage was only evident with the linguistic working memory task. The findings highlight the interplay between type of noise, level of noise, demand of task, and language background of the person completing the task, and also the limitations of the use of dBA alone for assessment of acceptability of a workspace.

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Notes

  1. Molesworth et al. (2014b) used native German speakers and only asked their native language, not the total number of languages spoken.

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Acknowledgements

The authors would like to thank the Australian Acoustical Society for an Education Grant that provided some support for this project and the participants who volunteered their time to assist with the research.

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Authors and Affiliations

  1. School of Aviation, University of New South Wales, Sydney, NSW, 2052, Australia

    Brett R. C. Molesworth & Chloe Wilcock

  2. School of Engineering and Information Technology, University of New South Wales, Canberra, ACT, 2600, Australia

    Marion Burgess

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  1. Brett R. C. Molesworth
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  2. Marion Burgess
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  3. Chloe Wilcock
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Correspondence to Brett R. C. Molesworth.

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Molesworth, B.R.C., Burgess, M. & Wilcock, C. Comparison of the Effects on Memory Tasks of Babble and Broadband Noise. Acoust Aust 46, 205–214 (2018). https://doi.org/10.1007/s40857-018-0128-9

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  • DOI: https://doi.org/10.1007/s40857-018-0128-9

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