How the cross-sectional discontinuity between ear canal and probe affects the ear canal length estimation
| Autor: | Makram Zebian, Johannes Hensel, Thomas Fedtke |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Sound Spectrography
Materials science Observational error Acoustics and Ultrasonics Quantitative Biology::Tissues and Organs Acoustics Otoacoustic Emissions Spontaneous Otoacoustic emission Models Biological Finite element method Discontinuity (geotechnical engineering) medicine.anatomical_structure Arts and Humanities (miscellaneous) Computer Science::Sound otorhinolaryngologic diseases medicine Humans sense organs Ear canal Ear Canal |
| Zdroj: | The Journal of the Acoustical Society of America. 132:EL8-EL14 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.4723565 |
| Popis: | Many ear canal probes both deliver and measure sound via narrow tubes. This study investigates the effect of the cross-sectional discontinuity at the interface between ear canal models and the connecting tubes of a commercially available otoacoustic emission probe on the "acoustically" estimated cavity lengths. Rigid cavities having the same length but different diameters were produced, and modeled by the finite element method. Cavities with a diameter larger than 8 mm had acoustic lengths that considerably overestimated the real geometry. A length correction was derived, which, in most applications, compensates for the measurement errors emerging from the discontinuity effects. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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