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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/1221474
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- Title
- An Algorithm that administers adaptive speech-in-noise testing to a specified reliability at selectable points on the psychometric function
- Related
- International journal of audiology, Vol. 52, Issue 11, (2013), p.795-800
- DOI
- 10.3109/14992027.2013.817688
- Publisher
- Informa Healthcare
- Date
- 2013
- Author/Creator
- Keidser, Gitte
- Author/Creator
- Dillon, Harvey
- Author/Creator
- Mejia, Jorge
- Author/Creator
- Nguyen, Cong-Van
- Description
- Objective: To introduce and verify an algorithm designed to administer adaptive speech-in- noise testing to a specified reliability at selectable points on the psychometric function. Design: Speech-in-noise performances were measured using BKB sentences presented in diffuse babble-noise, using morphemic scoring. Target of the algorithm was a test-retest standard deviation of 1.13 dB within the presentation of 32 sentences. Normal-hearing participants completed repeated measures using manual administration targeting 50% correct, and the automated procedure targeting 25%, 50%, and 75% correct. Aided hearing-impaired participants completed testing with the automated procedure targeting 25%, 50%, and 75% correct, repeating measurements at the 50% point three times. Study sample: Twelve normal-hearing and 63 hearing-impaired people who had English as first language. Results: Relative to the manual procedure, the algorithm produced the same speech reception threshold in noise (p = 0.96) and lower test-retest reliability on normal-hearing listeners. Both groups obtained significantly different results at the three target points (p < 0.04) with observed reliability close to expected. Target accuracy was not reached within 32 sentences for 18% of measurements on hearing-impaired participants. Conclusions: The reliability of the algorithm was verified. A second test is recommended if the target variability is not reached during the first measurement.
- Description
- 6 page(s)
- Subject Keyword
- algorithm
- Subject Keyword
- speech reception threshold
- Subject Keyword
- reliability
- Subject Keyword
- psychometric function
- Subject Keyword
- speech performance in noise
- Resource Type
- journal article
- Organisation
- Macquarie University. Department of Linguistics
- Identifier
- http://hdl.handle.net/1959.14/1221474
- Identifier
- mq:65113
- Identifier
- ISSN:1499-2027
- Identifier
- mq-rm-2014009153
- Identifier
- mq_res-se-388799
- Language
- eng
- Reviewed
Macquarie University ResearchOnline
