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Article: Over-the-counter hearing aids: Electroacoustic characteristics and possible target client groups

TitleOver-the-counter hearing aids: Electroacoustic characteristics and possible target client groups
Authors
KeywordsDeveloping countries
Hearing aids
Over the counter
Presbycusis
Issue Date2000
PublisherBC Decker Inc.
Citation
Audiology, 2000, v. 39 n. 2, p. 110-116 How to Cite?
AbstractOver-the-counter hearing aids (OTCs) are those directly purchased from retail outlets, without the benefit of prior professional hearing health care. They are particularly common in developing countries. This study examined the amplification characteristics of a selected sample of OTCs to determine if any target client group or groups were suitable for the OTCs. The electroacoustical performance of 10 OTCs was measured. The measurements included saturated sound pressure level curve, high-frequency average full-on gain, frequency response, total harmonic distortion, equivalent input noise level, and input-output curve. The full-on gain curve of each hearing aid was used to estimate the hypothetical hearing loss of target clients for each aid as it would be calculated by four hearing aid prescription formulae. Real-ear probe tube measurements were also performed on 10 adult subjects to determine the amplification that could be achieved by the OTCs before audible feedback occurred. The OTC hearing aids were not able to meet the prescription gain requirements of the majority of elderly clients who usually purchased them.
Persistent Identifierhttp://hdl.handle.net/10722/82516
ISSN
2003 Impact Factor: 0.943
2004 SCImago Journal Rankings: 0.755
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCheng, CMen_HK
dc.contributor.authorMcPherson, Ben_HK
dc.date.accessioned2010-09-06T08:30:15Z-
dc.date.available2010-09-06T08:30:15Z-
dc.date.issued2000en_HK
dc.identifier.citationAudiology, 2000, v. 39 n. 2, p. 110-116en_HK
dc.identifier.issn0020-6091en_HK
dc.identifier.urihttp://hdl.handle.net/10722/82516-
dc.description.abstractOver-the-counter hearing aids (OTCs) are those directly purchased from retail outlets, without the benefit of prior professional hearing health care. They are particularly common in developing countries. This study examined the amplification characteristics of a selected sample of OTCs to determine if any target client group or groups were suitable for the OTCs. The electroacoustical performance of 10 OTCs was measured. The measurements included saturated sound pressure level curve, high-frequency average full-on gain, frequency response, total harmonic distortion, equivalent input noise level, and input-output curve. The full-on gain curve of each hearing aid was used to estimate the hypothetical hearing loss of target clients for each aid as it would be calculated by four hearing aid prescription formulae. Real-ear probe tube measurements were also performed on 10 adult subjects to determine the amplification that could be achieved by the OTCs before audible feedback occurred. The OTC hearing aids were not able to meet the prescription gain requirements of the majority of elderly clients who usually purchased them.en_HK
dc.languageengen_HK
dc.publisherBC Decker Inc.en_HK
dc.relation.ispartofAudiologyen_HK
dc.subjectDeveloping countriesen_HK
dc.subjectHearing aidsen_HK
dc.subjectOver the counteren_HK
dc.subjectPresbycusisen_HK
dc.titleOver-the-counter hearing aids: Electroacoustic characteristics and possible target client groupsen_HK
dc.typeArticleen_HK
dc.identifier.emailMcPherson, B: dbmcpher@hkucc.hku.hken_HK
dc.identifier.authorityMcPherson, B=rp00937en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.pmid10882051-
dc.identifier.scopuseid_2-s2.0-0034040568en_HK
dc.identifier.hkuros53481en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034040568&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume39en_HK
dc.identifier.issue2en_HK
dc.identifier.spage110en_HK
dc.identifier.epage116en_HK
dc.identifier.isiWOS:000087387600008-
dc.identifier.scopusauthoridCheng, CM=13303888000en_HK
dc.identifier.scopusauthoridMcPherson, B=7006800770en_HK

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