Measuring speech-in-speech intelligibility with target location uncertainty
Resumé
The most common speech-intelligibility tests do only to a limited extent reflect the situations where hearing-impaired people typically experience speech-intelligibility problems in their everyday life. One major problem is that the resulting speech reception threshold (SRT) typically is unrealistically low. In an attempt to increase the ecological validity of the Danish Dantale II speech-intelligibility test, a modified version of the test was developed. The new version includes speech masking and target location uncertainty as ways to increase the resemblance to real-life situations. In the present study, test results were obtained from 16 hearing- impaired listeners and comparison was made to results obtained in three other test conditions, all having a fixed target position but including different types of masking signals. The results showed that the introduction of speech masking as well as target location uncertainty contributed to an increase in SRT.
Referencer
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