The Benefit of a Visually Guided Beamformer in a Dynamic Speech Task.
The aim of this study was to evaluate the performance of a visually guided hearing aid (VGHA) under conditions designed to capture some aspects of ‘‘real-world’’ communication settings. The VGHA uses eye gaze to steer the acoustic look direction of a highly directional beamforming microphone array....
| Publicado en: | Trends in Hearing Vol. 21; pp. 1 - 12 |
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| Autores principales: | , , , , |
| Formato: | Journal Article |
| Publicado: |
Sage Publications Inc.
Jan-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=126385600&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 126385600 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 23312165 HCEJ jtl: Trends in Hearing issn: 23312165 maglogo: N pubinfo: dt: Jan-Dec2017 vid: 21 pid: 344 pub: Sage Publications Inc. place: Thousand Oaks, California artinfo: ui: 126385600 10.1177/2331216517722304 126385600 ppf: 1 ppct: 11 formats: tig: atl: The Benefit of a Visually Guided Beamformer in a Dynamic Speech Task. aug: au: Best, Virginia Roverud, Elin Streeter, Timothy Mason, Christine R. Kidd Jr., Gerald affil: Department of Speech, Language and Hearing Sciences, Boston University, MA, USA. sug: subj: Speech Hearing Aids Hearing Loss, Sensorineural Therapy Speech Intelligibility Hearing Conversation Listening Human Acoustics Transducers Vision Young Adult Eye Movements Cues Descriptive Statistics Male Female Adult Audiometry, Pure-Tone Simulations P-Value Analysis of Variance Psychometrics Eye Movement Measurements Funding Source Adult: 19-44 years Male Female ab: The aim of this study was to evaluate the performance of a visually guided hearing aid (VGHA) under conditions designed to capture some aspects of ‘‘real-world’’ communication settings. The VGHA uses eye gaze to steer the acoustic look direction of a highly directional beamforming microphone array. Although the VGHA has been shown to enhance speech intelligibility for fixed-location, frontal targets, it is currently not known whether these benefits persist in the face of frequent changes in location of the target talker that are typical of conversational turn-taking. Participants were 14 young adults, 7 with normal hearing and 7 with bilateral sensorineural hearing impairment. Target stimuli were sequences of 12 question–answer pairs that were embedded in a mixture of competing conversations. The participant’s task was to respond via a key press after each answer indicating whether it was correct or not. Spatialization of the stimuli and microphone array processing were done offline using recorded impulse responses, before presentation over headphones. The look direction of the array was steered according to the eye movements of the participant as they followed a visual cue presented on a widescreen monitor. Performance was compared for a ‘‘dynamic’’ condition in which the target stimulus moved between three locations, and a ‘‘fixed’’ condition with a single target location. The benefits of the VGHA over natural binaural listening observed in the fixed condition were reduced in the dynamic condition, largely because visual fixation was less accurate. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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