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Real-Time Visual Feedback of Airflow in Voice Training: Aerodynamic Properties of Two Flow Ball Devices

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dc.contributor.authorFilipa M.B., Lã
dc.contributor.authorWistbacka, Greta
dc.contributor.authorAmarante Andrade, Pedro
dc.contributor.authorGranqvist, Svante
dc.date.accessioned2024-05-20T11:20:47Z
dc.date.available2024-05-20T11:20:47Z
dc.date.issued2017-05
dc.description.abstractObjectives. Flow ball devices have been used as teaching tools to provide visual real-time feedback of airflow during singing. This study aims at exploring static back pressure and ball height as function of flow for two devices, marketed as flow ball and floating ball game. Study Design. This is a comparative descriptive study. Methods. A flow-driven vocal tract simulator was used to investigate the aerodynamic properties of these two devices, testing them for four different ball sizes. The flow range investigated was between 0 and 0.5 L/s. Audio, flow, pressure, and ball height were recorded. Results. The flow pressure profiles for both tested devices were similar to those observed in previous studies on narrow tubes. For lifting the ball, both devices had a flow and a pressure threshold. The tested floating ball game required considerably higher back pressure for a given flow as compared with the flow ball. Conclusions. Both tested devices have similar effects on back pressure as straws of 3.7 and 3.0 mm in diameter for the flow ball and the floating ball game, respectively. One might argue that both devices could be used as tools for practicing semi-occluded vocal tract exercises, with the additional benefit of providing real-time visual feedback of airflow during phonation. The flow threshold, combined with the flow feedback, would increase awareness of flow, rather than of pressure, during exercises using a flow ball device.en
dc.description.versionversión final
dc.identifier.doihttps://doi.org/10.1016/j.jvoice.2016.09.024
dc.identifier.issn0892-1997
dc.identifier.urihttps://hdl.handle.net/20.500.14468/11749
dc.journal.issue3
dc.journal.titleJournal of Voice
dc.journal.volume31
dc.language.isoen
dc.publisherElsevier
dc.relation.centerFacultad de Educación
dc.relation.departmentDidáctica, Organización Escolar y Didácticas Especiales
dc.rightsAtribución-NoComercial-SinDerivadas 4.0 Internacional
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.subject.keywordsFlow ball
dc.subject.keywordsFloating ball game
dc.subject.keywordsReal-time visual feedback of airflow
dc.subject.keywordsSemi-occluded vocal tract
dc.subject.keywordsVoice
dc.titleReal-Time Visual Feedback of Airflow in Voice Training: Aerodynamic Properties of Two Flow Ball Deviceses
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
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