Development of a Danish speech intelligibility test

Publication: Research - peer-reviewJournal article – Annual report year: 2009

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Abstract A Danish speech intelligibility test for assessing the speech recognition threshold in noise (SRTN) has been developed. The test consists of 180 sentences distributed in 18 phonetically balanced lists. The sentences are based on an open word-set and represent everyday language. The sentences were equalized with respect to intelligibility to ensure uniform SRTN assessments with all lists. In contrast to several previously developed tests such as the hearing in noise test (HINT) where the equalization is based on scored (objective) measures of word intelligibility, the present test used an equalization method based on subjective assessments of the sentences. The new equalization method is shown to create lists with less variance between the SRTNs than the traditional method. The number of sentence levels included in the SRTN calculation was also evaluated and differs from previous tests. The test was verified with 14 normal-hearing listeners; the overall SRTN lies at a signal-to-noise ratio of -3.15 dB with a standard deviation of 1.0 dB. The list-SRTNs deviate less than 0.5 dB from the overall mean.
Original languageEnglish
JournalInternational Journal of Audiology
Publication date2009
Volume48
Issue10
Pages729-741
ISSN1499-2027
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 10

Keywords

  • Speech intelligibility assessment
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