| A comparison of two methods for estimating sound pressure level at the tympanic membrane at high frequencies for hearing aids. | |
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MedLine Citation:
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PMID: 20330573 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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For hearing aid fittings, it is important to know the delivered sound pressure level (SPL) at the tympanic membrane (TM) over a wide frequency range. Because it is infeasible to measure the SPL at the TM clinically, an indirect estimation based on measurements away from the TM is often used in practice. Furthermore, it is highly desirable that such a method does not require a clinician to use extra accessories to perform extra calibration in a clinic. Two such methods were proposed in the past. One used a set of empirically derived correction factors to estimate the SPL at the TM (Recker et al. (2009), the other used a lumped-element model to estimate the SPL at the TM [LoPresti et al. (2009)]. In this study, both methods were evaluated using actual hearing aid prototypes. An ITC hearing aid was built for each of ten participants. For each participant, the SPL in the ear canal was measured using a hearing aid microphone. The SPL at the TM was estimated using each method separately. The results were compared with the measured SPL at the TM. The relative strength and weakness of each method were discussed with the implications for clinical applications. |
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Authors:
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Tao Zhang; Karrie Recker; Janice Lopresti; Matt Kleffner; William Ryan |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 127 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 1868 Citation Subset: IM |
Affiliation:
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Starkey Labs., Inc., 6600 Washington Ave. South, Eden Prairie, MN 55344-3405, tao\_zhang@starkey.comKnowles Electrons LLC, Itasca, IL 60143Starkey Labs., Inc., Eden Prairie, MN 55344-3405Knowles Electrons LLC, Itasca, IL 60143. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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