| Autor: |
Philipp Roeske, Magnus Teschner, Cornelia Thiele, Matthias Blau, Tobias Sankowsky, Hamidreza Mojallal |
| Rok vydání: |
2010 |
| Předmět: |
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| Zdroj: |
Acta Acustica united with Acustica. 96:554-566 |
| ISSN: |
1610-1928 |
| DOI: |
10.3813/aaa.918306 |
| Popis: |
In this paper, a method of predicting the sound pressure at the ear drum, based on an optimized variant of the reflectance phase method and on a method of estimating individual drum impedances is presented and validated by probe tube measurements in human cadaver ears occluded by closed ear molds. It appears that the proposed method works with acceptable accuracy (roughly ±5 dB) in the frequency range from 1 kHz to 10 kHz. At lower frequencies, leakage is responsible for a high variability (up to 20 dB) of the sound pressure generated in the ear canal (and thus at the ear drum as well in this frequency range). In addition, it was observed that predictions based on ear canal models obtained from computer tomography scans were less accurate than predictions based on the method proposed in this paper. As the residual ear canals of the temporal bones used in this study were rather short, these results should be confirmed in vivo. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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