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1、ResearchArticleInternationalJournalofAudiology2009;48:334345DeborahVickers*Relativeimportanceofdifferentspectralbands§JoannaD.Robinson§ChristianFu¨llgrabetoconsonantidentification:Relevancefor§ThomasBaerBrianC.J.Moore§frequencytranspositioninhearingaids*UCLEarInstitute,London,UnitedKi
2、ngdomAbstractSumario§DepartmentofExperimentalListenerswithhigh-frequencydeadregions(DRs)benefitLaspersonasconregionesmuertas(DRs)enlasfrecuen-Psychology,UniversityofCambridge,fromamplificationoffrequenciesupto1.7timestheedgeciasaltassebeneficianconlaamplificacio´ndefrecuen-Cambridge,U
3、nitedKingdomfrequency,fe,oftheDR.Betterconsonantidentificationciashasta1.7veceslafrecuenciaborde,fe,delasDR.Semightbeachievedbyreplacingthebandfromfeto1.7fepuedelograrunamejoridentificacio´ndeconsonanteswithahigherspectralband.Weaimedtoidentifythereemplazandolabandadelafea1.7feconunab
4、andaKeyWordsoptimalband,usingsimulationswithnormal-hearingespectralsuperior.Buscamosidentificarlabandao´ptimalisteners.Inexperiment1,nonsensesyllableswerelowpassusandosimulacionesconnormo-oyentes.Enelexperi-ConsonantidentificationfilteredtosimulateDRswithfeof0.5,0.75,and1.0kHz.mento1,s
5、ilabassinsentidosefiltraronenunfiltropasa-TranspositionIdentificationwasmeasuredforeachofthesebasebandsbajoparaestimularlasDRsconfede0.5,0.75y1.0kHz.Band-importancefunctionaloneandwithabandpass-filteredbandadded(butnotSemidio´laidentificacio´nparacadaunadeestasbandastransposed).Theadd
6、edbandeitherextendedfromfetodebaseaisladasyconunabandaadicionaltambie´n1.7feoritscenterfrequencywasincreased,keepingfiltrada(perosintransposicio´n).LabandaagregadabandwidthfixedinERBN-number.Performanceim-tantoextendidadefea1.7feosufrecuenciacentralfueAbbreviationsprovedwithincreasing
7、centerfrequencyandthenreachedaumentada,manteniendoelanchodebandafijadoenunANOVA:Analysisofvarianceanasymptoteordeclined.Experiment2usedamid-nu´mero-ERBN.Elrendimientomejoro´alaumentarlafrequencybaseband,andalower-frequencyaddedband.frecuenciacentralhastallegaraunaası´ntotaodeclinar.DR
8、:Dead
