Metallic Voice: Physiological and Acoustic Features

Hanayama, Eliana Midori; Camargo, Zuleica; Tsuji, Domingos Hiroshi; Pinho, Sílvia Maria Rebelo

doi:10.1016/j.jvoice.2006.12.006

Cited by 20 publications

(13 citation statements)

References 28 publications

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“…Supraglottic compression has also been found in Middle Eastern singing [37]. In addition, there is empirical evidence that A-P constriction can contribute to an acoustic advantage (voice quality) [5,38]. …”

Section: Discussionmentioning

confidence: 99%

Laryngoscopic, Acoustic, Perceptual, and Functional Assessment of Voice in Rock Singers

Guzmán¹,

Barros²,

Espinoza³

et al. 2013

Folia Phoniatr Logop

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Objective: The present study aimed to vocally assess a group of rock singers who use growl voice and reinforced falsetto. Method: A group of 21 rock singers and a control group of 18 pop singers were included. Singing and speaking voice was assessed through acoustic, perceptual, functional and laryngoscopic analysis. Results: No significant differences were observed between groups in most of the analyses. Acoustic and perceptual analysis of the experimental group demonstrated normality of speaking voice. Endoscopic evaluation showed that most rock singers presented during singing voice a high vertical laryngeal position, pharyngeal compression and laryngeal supraglottic compression. Supraglottic activity during speaking voice tasks was also observed. However, overall vocal fold integrity was demonstrated in most of the participants. Slightly abnormal observations were demonstrated in few of them. Singing voice handicap index revealed that the most affected variable was the physical sphere, followed by the social and emotional spheres. Conclusions: Although growl voice and reinforced falsetto represent laryngeal and pharyngeal hyperfunctional activity, they did not seem to contribute to the presence of any major vocal fold disorder in our subjects. Nevertheless, we cannot rule out the possibility that more evident vocal fold disorders could be found in singers who use these techniques more often and during a longer period of time.

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Section: Discussionmentioning

confidence: 99%

Laryngoscopic, Acoustic, Perceptual, and Functional Assessment of Voice in Rock Singers

Guzmán¹,

Barros²,

Espinoza³

et al. 2013

Folia Phoniatr Logop

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“…It is also common to observe this characteristic in the tracing of subjects who use pharyngeal constriction to assist vocal projection gains aiming to increase loudness 37 . This adjustment may lead to laryngeal hyperfunction, causing negative impacts on vocal quality.…”

Section: "Distribution Of Energy In the Tracing" Domainmentioning

confidence: 99%

Content evidence of a spectrographic analysis protocol

2017

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Objective: to verify the content evidence of a spectrographic analysis protocol. Methods: a methodological study in which five speech therapists who assessed the clarity and the relevance of the protocol were selected. The Content Validity Index (CVI) was used to investigate the level of agreement among judges regarding overall aspects, items and domains of the protocol. Results: most judges considered the overall aspects of the protocol as comprehensive. As for clarity, 17 items showed an excellent content validity (CVI ≥ 0.78), three showed a good content validity (0.60 ≤ CVI ≤ 0.77) and two items were judged as poor (CVI ≤ 0.59). As for relevance, 19 items obtained an excellent content validity (CVI ≥ 0.78) and three had a good content validity (0.60 ≤ CVI ≤ 0.77). The judges suggested adding items related to vocal signal normality in all domains. After the analysis, 18 items required no reformulation, five items were added, three were reformulated and one was excluded. Conclusion: the proposed protocol was regarded as a comprehensive one. The items presented a good to excellent content validity as for clarity and relevance. After this validation step, the protocol ended up presenting 25 items distributed into five domains.

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“…The metallic voice quality is described by literature as being strident, thin, and unpleasant (1) ; it is also associated with the vocal resonance pattern of pharyngeal focus (2) . Its emission is related to vocal tract contraction by adjustments in pharyngeal constriction and articulators, laryngeal elevation, adductor tension (3) , velar lowering, aryepiglottic constriction, and lateral constriction (2) .…”

Section: Introductionmentioning

confidence: 99%