Exceeding individual working memory capacity restrains aided speech recognition performance - effects in complex listening situations and effects of acclimatization

Forfattere

  • Thomas Lunner Oticon A/S, Research Centre Eriksholm, DK-3070 Snekkersten, Denmark; Section of Technical Audiology, Department of Clinical and Experimental Medicine, Linköping University, S-58185, Sweden; Swedish Institute of Disability Research and Department of Behavioural Sciences and Learning, Linköping University, S-58183, Sweden
  • Elisabet Sundewall-Thorén Oticon A/S, Research Centre Eriksholm, DK-3070 Snekkersten, Denmark
  • Mary Rudner Swedish Institute of Disability Research and Department of Behavioural Sciences and Learning, Linköping University, S-58183, Sweden
  • Catharina Foo Swedish Institute of Disability Research and Department of Behavioural Sciences and Learning, Linköping University, S-58183, Sweden
  • Jerker Rönnberg Swedish Institute of Disability Research and Department of Behavioural Sciences and Learning, Linköping University, S-58183, Sweden

Resumé

Two experiments were carried out that investigated individual working memory capacity and speech recognition performance in noise. Experiment 1 (Lunner and Sundewall-Thorén, 2007) investigated relations between individual working memory capacity and aided speech performance with fast and slow release times and in steady-state and modulated noise backgrounds. Experiment 2 (Rudner, Foo, Rönnberg and Lunner, 2007) investigated relations between individual working memory capacity and aided speech recognition performance under matched conditions (testing with acclimatized hearing-aid release times) and mismatched conditions (testing with new/unacclimatized hearing-aid release times). The results in both experiments indicate that if individual working-memory capacity is exceeded - either because of ‘cognitive overload’ due to acoustic variations or because of testing with ‘cognitively mistuned’ hearing-aid settings - speech recognition performance drops. Furthermore, the results suggest that laboratory testing under steady-state conditions may underestimate the role of cognition.

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Yderligere filer

Publiceret

2007-12-15

Citation/Eksport

Lunner, T., Sundewall-Thorén, E., Rudner, M., Foo, C., & Rönnberg, J. (2007). Exceeding individual working memory capacity restrains aided speech recognition performance - effects in complex listening situations and effects of acclimatization. Proceedings of the International Symposium on Auditory and Audiological Research, 1, 551–558. Hentet fra https://proceedings.isaar.eu/index.php/isaarproc/article/view/2007-55

Nummer

Årg. 1 (2007): Auditory Signal Processing in Hearing Impaired Listeners

Sektion

2007/6. Hearing-aid evaluation and optimization

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