A Novel Instrument to Measure Acoustic Resonances of the Vocal Tract During Phonation Smith, John en_US Epps, Julien en_US Wolfe, Joseph en_US 2021-11-25T13:09:10Z 2021-11-25T13:09:10Z 1997 en_US
dc.description.abstract Acoustic resonances of the vocal tract give rise to formants (broad bands of acoustic power) in the speech signal when the vocal tract is excited by a periodic signal from the vocal folds. This paper reports a novel instrument which uses a real-time, non-invasive technique to measure these resonances accurately during phonation. A broadband acoustic current source is located just outside the mouth of the subject and the resulting acoustic pressure is measured near the lips. The contribution of the speech signal in the pressure spectrum is then digitally suppressed and the resonances are calculated from the input impedance of the vocal tract as a function of frequency. The external excitation signal has a much smaller harmonic spacing than the periodic signal from the vocal folds and consequently the resonances are determined much more accurately due to the closer sampling. This is particularly important for higher pitched voices and we demonstrate that this technique can be markedly superior to the curve-fitting technique of linear prediction. The superior frequency resolution of this instrument which results from external vocal tract excitation can provide the precise, stable, effective, articulatory feedback considered essential for some language-learning and speech therapy applications. en_US
dc.identifier.issn 0957-0233 en_US
dc.language English
dc.language.iso EN en_US
dc.rights CC BY-NC-ND 3.0 en_US
dc.rights.uri en_US
dc.source Legacy MARC en_US
dc.subject.other Vocal tract. en_US
dc.subject.other Resonances. en_US
dc.subject.other Formants. en_US
dc.subject.other Acousitc impedance. en_US
dc.title A Novel Instrument to Measure Acoustic Resonances of the Vocal Tract During Phonation en_US
dc.type Journal Article en
dcterms.accessRights metadata only access
dspace.entity.type Publication en_US
unsw.description.notePublic Author webpage: en_US
unsw.identifier.doiPublisher en_US
unsw.relation.faculty Science
unsw.relation.faculty Engineering
unsw.relation.ispartofjournal Measurement Science and Technology en_US
unsw.relation.ispartofpagefrompageto 1112-1121 en_US
unsw.relation.ispartofvolume 8 en_US
unsw.relation.originalPublicationAffiliation Smith, John, Physics, Faculty of Science, UNSW en_US
unsw.relation.originalPublicationAffiliation Epps, Julien, Electrical Engineering & Telecommunications, Faculty of Engineering, UNSW en_US
unsw.relation.originalPublicationAffiliation Wolfe, Joseph, Physics, Faculty of Science, UNSW en_US School of Physics * School of Electrical Engineering and Telecommunications *
Resource type