Digital noise reduction: outcomes from laboratory and field studies.
The purpose of this study was to determine the impact of a digital noise reduction (DNR) scheme implemented in a current commercial hearing aid. In a double-blinded design, three conditions of onset time (4, 8, 16 seconds) were randomly assigned to the 25 subjects, plus one condition wherein the noi...
| Publicado en: | International Journal of Audiology Vol. 47; no. 8; pp. 447 - 461 |
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| Autores principales: | , , , |
| Formato: | clinical trial questionnaire/scale research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Aug2008
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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=105674321&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105674321 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14992027 JW2 jtl: International Journal of Audiology issn: 14992027 maglogo: Y pubinfo: dt: Aug2008 vid: 47 iid: 8 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 105674321 2010006258 10.1080/14992020802033091 NLM18698521 105674321 ppf: 447 ppct: 14 formats: fmt: @attributes: type: P tig: atl: Digital noise reduction: outcomes from laboratory and field studies. aug: au: Bentler R Wu Y Kettel J Hurtig R affil: Department of Speech Pathology & Audiology, University of Iowa, Iowa City, USA. sug: subj: Hearing Aids Hearing Loss, Sensorineural Therapy Signal Processing, Computer Assisted Equipment and Supplies Adult Aged Analysis of Variance Descriptive Statistics Diaries Double-Blind Studies Equipment Design Female Funding Source Geriatric Depression Scale Hearing Loss, Sensorineural Diagnosis Language Tests Male Middle Age Patient Satisfaction Personality Tests Pretest-Posttest Design Psychological Tests Repeated Measures Scales Speech Perception Speech Reception Threshold Test Human Adult: 19-44 years Aged: 65+ years Middle Aged: 45-64 years Female Male ab: The purpose of this study was to determine the impact of a digital noise reduction (DNR) scheme implemented in a current commercial hearing aid. In a double-blinded design, three conditions of onset time (4, 8, 16 seconds) were randomly assigned to the 25 subjects, plus one condition wherein the noise-reduction feature was disengaged. Subsequently, a fifth trial/condition, wherein the subject had access to three memories in which the different onsets were programmed, was carried out. For each of the five conditions, the subjects had an at-home trial, prior to obtaining self-report measures. Laboratory measures of speech perception showed no effect of the DNR, with or without the provision of visual cues. Laboratory-based ratings of ease of listening showed DNR-on (all onset times) to be rated significantly better than DNR-off; for ratings of listening comfort, the 4-second onset time was rated significantly lower (poorer) than the 8-second onset or the DNR-off condition; for ratings of sound quality, DNR-on or -off had no differential effect. Self-report measures indicated significantly higher aversiveness in the DNR-off condition compared to the pre-test scores. pubtype: Academic Journal doctype: clinical trial questionnaire/scale research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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