J Am Acad Audiol 2021; 32(08): 487-500
DOI: 10.1055/s-0041-1735213
Research Article

Live Evaluation of Auditory Preference, a Laboratory Test for Evaluating Auditory Preference

Karolina Smeds
1   ORCA Europe, WS Audiology, Stockholm, Sweden
,
Josefina Larsson
1   ORCA Europe, WS Audiology, Stockholm, Sweden
,
Martin Dahlquist
1   ORCA Europe, WS Audiology, Stockholm, Sweden
,
Florian Wolters
1   ORCA Europe, WS Audiology, Stockholm, Sweden
,
Petra Herrlin
1   ORCA Europe, WS Audiology, Stockholm, Sweden
› Institutsangaben
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Abstract

Background Many laboratory tests are performed under unrealistic conditions. Tasks, such as repeating words or sentences, are performed in simple loudspeaker setups. Currently, many research groups focus on realistic audiovisual laboratory setups. Fewer groups focus on the tasks performed during testing.

Purpose A semicontrolled laboratory test method focusing on the tasks performed, the Live Evaluation of Auditory Preference (LEAP) was evaluated. LEAP is developed to evaluate hearing-instrument performance in test scenarios that represent everyday listening situations.

Research Design LEAP was evaluated in a feasibility study. The method comprises conversations between a test participant and one or two test leaders, enabling evaluation of the test participant's own voice. The method allows for visual cues (when relevant) and introduce social pressure to participate in the conversation. In addition, other everyday listening tasks, such as watching television (TV) and listening to radio, are included. In this study, LEAP was used to assess preference for two hearing aid settings using paired comparisons.

Study Sample Nineteen experienced hearing aid users (13 females and 6 males; mean age 74 years), participated in the study.

Data Collection and Analysis LEAP was performed at three visits to the laboratory. In addition, participants conducted a field trial where the two hearing aid programs were compared using Ecological Momentary Assessments (EMA). During LEAP testing, six mandatory test cases were used, representing commonly occurring everyday listening situations. Individual test cases were also included, selected from individually experienced listening situations during the field trial. Within- and between-session reliability of the LEAP test was investigated. Validity was investigated by comparing the LEAP and the EMA results.

Results For the current signal-processing evaluation, the test was judged to have acceptable reliability and validity. The inclusion of individually selected test cases increased the representativeness of the LEAP test, but it did not substantially alter the results in the current study.

Conclusion LEAP in its current implementation seems suitable for investigating signal-processing preference in the laboratory in a way that is indicative of everyday preference. The LEAP method represents one step forward in bringing the real world into the laboratory.

Note

The material has been presented at the International Hearing Aid Research Conference in Lake Tahoe, CA, during August 2018 (no proceedings). A pilot study has been presented at the International Congress on Acoustics in Aachen, Germany, November 2019. Smeds et al.[30]


Ethical Considerations

All data collection was performed in compliance with ethical treatment of participants in medical research. The participants signed informed consent documentation after receiving thorough written and oral information about the study. In particular, the field data collection, using smartphones and Google Forms, was described in detail. To ensure anonymity during the field trial, the test participants borrowed smartphones from ORCA Europe, and Google accounts were created without any personal information. The participants were paid 900 SEK (∼95 USD) and received two boxes of hearing aid batteries (120 batteries) for their participation.




Publikationsverlauf

Eingereicht: 08. Februar 2021

Angenommen: 10. Mai 2021

Artikel online veröffentlicht:
29. Dezember 2021

© 2021. American Academy of Audiology. This article is published by Thieme.

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