Refining a model of hearing impairment using speech psychophysics
Morten L Jepsen1, Torsten Dau1, Oded Ghitza2
1Centre for Applied Hearing Research, Department of Electrical Engineering, Technical University of Denmark, Ørsteds Plads, Building 352, DK-2800 Kongens Lyngby, Denmark moje@widex.com, tdau@elektro.dtu.dk.
The Journal of the Acoustical Society of America
|September 20, 2014
Summary
Improving hearing models, including for hearing impairment, is possible by integrating speech test results. This approach uses measures of sensitivity, cochlear compression, and phonetic confusions for better individual hearing models.
Area of Science:
- Audiology
- Speech processing
- Computational modeling
Background:
- Accurate modeling of hearing and hearing impairment is crucial for effective auditory rehabilitation.
- Current models may not fully capture the complexities of individual auditory perception, especially with speech stimuli.
Purpose of the Study:
- To enhance models of hearing and individual hearing impairment by incorporating speech test results.
- To present a conceptual iterative procedure for modeling hearing using speech data.
Main Methods:
- Developed a conceptual iterative procedure integrating measures of auditory sensitivity, cochlear compression, and phonetic confusions.
- Utilized the Diagnostic Rhyme Test (DRT) framework for phonetic confusion analysis.
- Applied the procedure to data from three hearing-impaired listeners.
Main Results:
- Diagnostic Rhyme Test (DRT) data provided valuable insights into the damaged auditory periphery.
- Speech and non-speech auditory measures were found to be complementary.
- The integrated approach yielded improved models of individual hearing impairment.
Conclusions:
- Speech test results are integral to improving general hearing models and individual hearing impairment models.
- The proposed iterative procedure effectively utilizes phonetic confusion data for enhanced auditory modeling.
- Combining diverse auditory measures leads to more accurate and personalized hearing models.
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