Occlusion effect of earmolds with different venting systems
| Autor: | Charlotte Thunberg Jespersen, Barbara Brenner, Ole Dyrlund Jensen, Jennifer Groth, Jürgen Kiessling |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Hearing aid
medicine.medical_specialty Hearing loss medicine.medical_treatment Hearing Loss Sensorineural Audiology Speech and Hearing fluids and secretions Hearing Aids Hearing Prosthesis Fitting Occlusion otorhinolaryngologic diseases medicine Humans Occlusion effect business.industry Equipment Design equipment and supplies humanities Case-Control Studies Regression Analysis medicine.symptom business geographic locations Ear Canal |
| Zdroj: | Journal of the American Academy of Audiology. 16(4) |
| ISSN: | 1050-0545 |
| Popis: | In this study the occlusion effect was quantified for five types of earmolds with different venting. Nine normal-hearing listeners and ten experienced hearing aid users were provided with conventional earmolds with 1.6 and 2.4 mm circular venting, shell type earmolds with a novel vent design with equivalent cross-sectional vent areas, and nonoccluding soft silicone eartips of a commercial hearing instrument. For all venting systems, the occlusion effect was measured using a probe microphone system and subjectively rated in test and retest sessions. The results for both normal-hearing subjects and hearing aid users showed that the novel vents caused significantly less occlusion than the traditional vents. Occlusion effect associated with the soft silicone eartip was comparable to the nonoccluded ear. Test-retest reproducibility was higher for the subjective occlusion rating than for the objectively measured occlusion. Perceived occlusion revealed a closer relationship to measured occlusion in the ear in which the measured occlusion effect was higher ("high OE" ear) than in the "low OE" ear. As our results suggest that subjective judgment of occlusion is directly related to the acoustic mass of the air column in the vent, the amount of perceived occlusion may be predicted by the vent dimensions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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