How directional microphones affect speech recognition, listening effort and localisation for listeners with moderate-to-severe hearing loss.
Objective: The purpose of this study was to evaluate the effects of directional microphone use on laboratory measures of sentence recognition, listening effort and localisation. An additional purpose of this study was to evaluate the effects of asymmetric directional microphone use on the same labor...
| Publicado en: | International Journal of Audiology Vol. 56; no. 12; pp. 909 - 919 |
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| Autores principales: | , |
| Formato: | research tables/charts tracings Journal Article |
| Publicado: |
Taylor & Francis Ltd
Dec2017
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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=126227501&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 126227501 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14992027 JW2 jtl: International Journal of Audiology issn: 14992027 maglogo: Y pubinfo: dt: Dec2017 vid: 56 iid: 12 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 126227501 126227501 126227501 10.1080/14992027.2017.1355074 126227501 ppf: 909 ppct: 10 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: How directional microphones affect speech recognition, listening effort and localisation for listeners with moderate-to-severe hearing loss. aug: au: Picou, Erin M. Ricketts, Todd A. affil: Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, Nashville, TN, USA sug: subj: Hearing Loss, Sensorineural Therapy Transducers Utilization Speech Perception Evaluation Listening Effort Evaluation Task Performance and Analysis Language Tests Human Female Male Hearing Aid Fitting Outpatients Descriptive Statistics Data Analysis Software P-Value Repeated Measures Analysis of Variance Confidence Intervals Odds Ratio Health Facilities United States United States Funding Source Female Male ab: Objective: The purpose of this study was to evaluate the effects of directional microphone use on laboratory measures of sentence recognition, listening effort and localisation. An additional purpose of this study was to evaluate the effects of asymmetric directional microphone use on the same laboratory measures.Design: Three hearing aid conditions were evaluated: (1) bilateral omnidirectional microphones, (2) bilateral directional microphones and (3) asymmetric microphones (directional microphone for only one hearing aid). Sentence recognition performance was evaluated using a connected speech test. Listening effort was evaluated using a dual-task paradigm with a response time-based secondary task requiring word categorisation. Localisation was examined using a complex task requiring localisation and recall of speech originating from one of four loudspeakers in the horizontal plane (−60°, −45°, +45°, +60°).Study sample: Eighteen adults (M = 61.8 years) with symmetrical, moderate-to-severe hearing loss participated.Results: Performance on each task was analysed separately using a repeated measures analysis of variance. Results revealed directional benefits for sentence recognition and listening effort, but microphone setting did not affect localisation. Performance was equivalent with symmetric and asymmetric directional configurations.Conclusions: Bilateral and asymmetric directional microphone configurations equally improved sentence recognition and listening effort; neither affected localisation or recall. pubtype: Academic Journal doctype: research tables/charts tracings Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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