Using probe-microphone measurements to improve the match to target gain and frequency response slope, as a function of earmould style, frequency, and input level.
Objective:Matching a prescription gain target at 60–65 dB SPL does not ensure audibility of lower input levels, nor does it mean the fitted frequency response slope is conducive to good sound quality. The aim of the present study was to evaluate the use of probe-microphone measurements to match targ...
| Publicado en: | International Journal of Audiology Vol. 55; no. 4; pp. 215 - 224 |
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| Autores principales: | , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Apr2016
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=113251994&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 113251994 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14992027 JW2 jtl: International Journal of Audiology issn: 14992027 maglogo: Y pubinfo: dt: Apr2016 vid: 55 iid: 4 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 113251994 113251994 113251994 10.3109/14992027.2015.1104736 113251994 ppf: 215 ppct: 9 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Using probe-microphone measurements to improve the match to target gain and frequency response slope, as a function of earmould style, frequency, and input level. aug: au: Munro, Kevin J. Puri, Reema Bird, Judith Smith, Mark affil: School of Psychological Sciences, University of Manchester, Manchester, UK sug: subj: Hearing Aids Evaluation Hearing Aid Fitting Methods Treatment Outcomes Evaluation Human Male Female Adult Middle Age Aged Aged, 80 and Over Goodness of Fit Chi Square Test Analysis of Variance Repeated Measures T-Tests Post Hoc Analysis Adult: 19-44 years Middle Aged: 45-64 years Aged: 65+ years Aged, 80 & over Male Female ab: Objective:Matching a prescription gain target at 60–65 dB SPL does not ensure audibility of lower input levels, nor does it mean the fitted frequency response slope is conducive to good sound quality. The aim of the present study was to evaluate the use of probe-microphone measurements to match target gain and slope, as a function of earmould style, frequency, and input level.Design:The real-ear insertion gain was calculated for an input of 50, 65, and 80 dB SPL for the manufacturer’s ‘initial fit’ (IF) settings and after adjustment to target in 49 and 51 open slim-tube and custom earmould fittings, respectively.Study sample:One hundred adults with median age 74 years (range 32–93).Results:Some 18%–67% of the IF settings were within 10 dB of the target gain but this increased to >85% after adjustment. Some 47%–71% of the IF settings were within 10 dB of the target slope but, with the exception of 2–4 kHz, this increased to >88% after adjustment.Conclusions:The results indicate that IF settings are inadequate, at least for the model of hearing aid used in the present study; however, significant discrepancies remained, even after adjustment. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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