Contact quotient versus closed quotient: a comparative study on professional male singers

Filipa M.B., Lã y Sundberg, Johan . (2015) Contact quotient versus closed quotient: a comparative study on professional male singers. Journal of Voice, Vol. 29 Issue 2

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Título Contact quotient versus closed quotient: a comparative study on professional male singers
Autor(es) Filipa M.B., Lã
Sundberg, Johan
Materia(s) Educación
Música
Abstract Objectives: The term “closed quotient” is frequently used for data derived both from inverse filtering and from electroglottography. In the former case it is defined as the ratio between the closed phase and the period, as measured in flow glottograms (FLOGG), while in the latter case it is defined as the time interval between the falling and rising parts of the electroglottogram (EGG), measured at some percentage of the peak-to-peak amplitude. The study aims at analyzing differences between EGG and FLOGG based closed quotients and their relationships with voice source parameters. Study Design: Comparative study Methods: FLOGG based and EGG based measures collected from five professional male singers were compared, under different pitch and loudness conditions. Results: As compared with the FLOGG based quotient, the EGG based quotient (i) varied more between subjects, (ii) presented greater values, (iii) varied less with subglottal pressure, (iv) varied less with the normalized amplitude quotient (i.e. the ratio between the flow pulse amplitude and the product of period and maximum flow declination rate), and (v) varied less with the relative amplitude of the voice source fundamental. Conclusions: Although positively related, FLOGG based and EGG based closed quotients differ and must not be confused.
Palabras clave Closed quotient
Contact Quotient
Flow glottogram
Electrolaryngography
Voice source analysis
Inverse filtering
Trained male voices
Editor(es) Elsevier
Fecha 2015-03
Formato application/pdf
Identificador bibliuned:425-Lfilipa-0012
http://e-spacio.uned.es/fez/view/bibliuned:425-Lfilipa-0012
DOI - identifier https://doi.org/10.1016/j.jvoice.2014.07.005
ISSN - identifier 0892-1997
Nombre de la revista Journal of Voice
Número de Volumen 29
Número de Issue 2
Página inicial 148
Página final 154
Publicado en la Revista Journal of Voice, Vol. 29 Issue 2
Idioma eng
Versión de la publicación acceptedVersion
Tipo de recurso preprint
Derechos de acceso y licencia http://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/openAccess
Tipo de acceso Acceso abierto
Notas adicionales This is the Accepted Manuscript of an article published by Elsevier in "Journal of Voice" on Mar 2015, available online: https://doi.org/10.1016/j.jvoice.2014.07.005
Notas adicionales Este es el manuscrito aceptado de un artículo publicado por Elsevier en "Journal of Voice" en Mar 2015, disponible en línea: https://doi.org/10.1016/j.jvoice.2014.07.005

 
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Creado: Tue, 05 Dec 2023, 19:00:29 CET