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Learning effect when using the Danish Hagerman sentences (Dantale II) to determine speech reception threshold
Lotte Hagen Hernvig1, Steen Ostergaard Olsen
1Department of Audiology, GN ReSound as, Denmark. lhernvig@gnresound.dk
International Journal of Audiology
|October 22, 2005
Summary
The Danish sentence test, Dantale II, shows a learning effect in hearing-impaired listeners. This learning effect impacts audiological test results, with within-visit and inter-visit improvements noted.
Area of Science:
- Audiology
- Speech Perception Research
Background:
- The Danish sentence test, Dantale II, is used in audiological assessments.
- Understanding learning effects is crucial for accurate hearing aid fitting and speech processing evaluations.
Purpose of the Study:
- To investigate the learning effect of the Dantale II speech material in unaided hearing-impaired listeners.
- To quantify both within-visit and inter-visit learning effects.
Main Methods:
- Nineteen hearing-impaired subjects completed the Dantale II speech test.
- Learning effects were measured after listening to 160 sentences.
- Inter-visit periods ranged from 14 to 43 days.
Main Results:
- A within-visit learning effect of 3.2 dB was observed.
- An inter-visit learning effect of 1.6 dB was recorded.
- Learning effects were significant even with a substantial number of sentences.
Conclusions:
- The Dantale II speech material demonstrates a learning effect in hearing-impaired individuals.
- Regular testing with Dantale II is recommended for research involving hearing aid algorithms.
- Limiting signal processing test conditions is advised to mitigate learning effects.