Comparative Analysis of the Closed Quotient for Lip and Tongue Trills in Relation to the Sustained Vowel /ε/

Cordeiro, Gislaine Ferro; Montagnoli, Arlindo Neto; Nemr, Kátia; Menezes, Márcia Helena Moreira; Tsuji, Domingos Hiroshi

doi:10.1016/j.jvoice.2010.07.004

Cited by 44 publications

(40 citation statements)

References 23 publications

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“…Hence these exercises may provide a sensory feedback on phonatory conditions. In addition, the lip trill exercise has been found to decrease CQ (Gaskill & Erickson, 2008) and the same has been found for the tongue trill exercise (Hamdan et al, 2011), even though the opposite effect has also been observed (Cordeiro et al, 2012).…”

Section: Introductionsupporting

confidence: 56%

Effects on Vocal Fold Collision and Phonation Threshold Pressure of Resonance Tube Phonation With Tube End in Water

Enflo

Sundberg

Romedahl³

et al. 2013

J Speech Lang Hear Res

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Purpose: Resonance tube phonation in water (RTPW) or in air is a voice therapy method successfully used for treatment of several voice pathologies. Its effect on the voice has not been thoroughly studied. This investigation analyzes the effects of RTPW on collision and phonation threshold pressures (CTP and PTP), the lowest subglottal pressure needed for vocal fold collision and phonation, respectively.Method: Twelve mezzo-sopranos phonated into a glass tube, the end of which was placed under the water surface in a jar. Subglottal pressure, electroglottography and audio signals were recorded before and after exercise. Also, the perceptual effects were assessed in a listening test with an expert panel which also rated the subjects' singing experience.Results: Resonance tube phonation significantly increased CTP, and also tended to improve perceived voice quality. The latter effect was mostly greater in singers who did not practice singing daily. In addition, a more pronounced perceptual effect was found in singers rated as being less experienced.Conclusion: Resonance tube phonation significantly raised CTP and tended to improve perceptual ratings of voice quality. The effect on PTP failed to reach significance.

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Section: Introductionsupporting

confidence: 56%

Effects on Vocal Fold Collision and Phonation Threshold Pressure of Resonance Tube Phonation With Tube End in Water

Enflo

Sundberg

Romedahl³

et al. 2013

J Speech Lang Hear Res

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show abstract

“…Parameters and measures related to voice production such as frequency, length of vocal emission and sound pressure may suffer fine adjustments according to the pattern of vocal fold vibration. Some factors such as subglottic air pressure, air flow transglottic, glottal resistance, contraction of the intrinsic muscles of the larynx, pattern of glottal adduction, vibration mass, rigidity and elasticity of the vocal folds and acoustic coupling of the cavities above and below the vocal folds operating simultaneously during phonation 1,[3][4][5][6] . Deviations of these aspects may conduce to vocal distortions and are present in several dysphonia, causing impairment in voice quality and many dysphonia are closely related to sound pressure level disorders (SPL), changing the usual loudness 1,7 .…”

Section: Sound Pressure Level and Maximum Phonation Time After Fingermentioning

confidence: 99%

“…Furthermore, it is noninvasive measurement, quick and practice 7,10 . For the treatment and improvement of voice, the Speech-Language Pathologist provides a series of vocal techniques, among them the finger kazoo technique (FK), semi-occluded vocal tract exercise (SOVTE) which causes constriction in the vocal tract with increase of glottal pressure and supraglottic, which tends to depart the vocal folds, reducing the impact force between them during phonation 5,13,14 . The FK technique presents effects such as the improvement of the resonance in the vocal tract, increased intensity of the formant tracking, greater vocal stability 12 and improves the perception of voice 12,13 .…”

Section: Sound Pressure Level and Maximum Phonation Time After Fingermentioning

confidence: 99%

Pressão sonora e tempo máximo de fonação após a técnica de finger kazoo

2013

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OBJETIVO: verificar o nível de pressão sonora (NPS) modal e o tempo máximo de fonação (TMF) de /a/ de mulheres adultas, sem queixas vocais ou afecções laríngeas, antes, imediatamente após e cinco minutos após a execução da técnica de finger kazoo (FK). MÉTODO: coleta do TMF/a/, medida da frequência fundamental (f0) e seu desvio-padrão e do NPS modal, de 32 mulheres entre 18 e 40 anos de idade sem queixas vocais ou afecções laríngeas antes (M1), imediatamente após três séries de 15 repetições do FK (M2), e cinco minutos após silêncio (M3). Testes Spearman, Tukey e Friedman. RESULTADOS: aumento do NPS modal em M2 (com significância) e em M3; aumento de TMF/a/ em M2 e M3. CONCLUSÃO: no grupo pesquisado de mulheres adultas sem queixas vocais ou afecções laríngeas, houve aumento do NPS modal imediatamente após três séries de 15 repetições da técnica de FK, mostrando que a técnica pode influenciar a pressão sonora, a loudness e a projeção vocal.

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“…With regard to male voices, the jitter signifi cantly decreased (p=0.018) and there were no signifi cant changes for the shimmer. According to literature (24,25) , decrease of these parameters is an expected effect of the exercise. However, the shimmer results for the male gender are in agreement with some studies that did not fi nd changes in the perturbation parameters after tongue vibrations (5,25) .…”

Section: Discussionmentioning

confidence: 81%

“…According to literature (24,25) , decrease of these parameters is an expected effect of the exercise. However, the shimmer results for the male gender are in agreement with some studies that did not fi nd changes in the perturbation parameters after tongue vibrations (5,25) . Generally, our results indicate the immediate effect of voiced vibrations and lower mean perturbation of the voice signal in relation to the variation of frequency and amplitude.…”

Section: Discussionmentioning

confidence: 81%

Parameters Acoustic and High-speed kymography identified effects of voiced vibration and vocal fry exercises

Pimenta

Dájer

Hachiya

et al. 2013

CoDAS

Self Cite

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Purpose: To identify the immediate effects of voiced vibration and vocal fry exercises on healthy subjects by means of acoustic parameters and high-speed kymography. Methods: Thirty healthy subjects (18 women and 12 men, aged from 19 to 45 years old) participated in this study. The voices were recorded at the range of 44.100 samples/second, before and after of the vocal exercises. We developed a computational routine to extract jitter and shimmer. High-speed kymography was generated from laryngeal images for the analysis of the phase times: closed (CPh), open (OPh), of closing (cPh) and of opening (oPh) and used the paired t-Student test and the Mann-Whitney test, with a significance level of 0.05. Results: After voiced vibrations, acoustic parameters showed reduced jitter for both genders (p=0.018 for men and p<0.01 for women) and reduced shimmer for female voices (p<0.01). There was a decrease in CPh (p=0.046) and cPh (p=0.026) and an increase in OPh (p=0.05) in female vocal folds. After vocal fry, we identified decreased jitter (p<0.01) in female voices and cPh (p=0.026) in male vocal folds. Conclusion: We observed more positive immediate effects of the voiced vibrations, mainly in voice quality and vocal folds among females. Nevertheless, studies with larger male sample and investigation of the appropriate time of vocal fry are necessary to confirm the results of this search.

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Comparative Analysis of the Closed Quotient for Lip and Tongue Trills in Relation to the Sustained Vowel /ε/

Cited by 44 publications

References 23 publications

Effects on Vocal Fold Collision and Phonation Threshold Pressure of Resonance Tube Phonation With Tube End in Water

Effects on Vocal Fold Collision and Phonation Threshold Pressure of Resonance Tube Phonation With Tube End in Water

Pressão sonora e tempo máximo de fonação após a técnica de finger kazoo

Parameters Acoustic and High-speed kymography identified effects of voiced vibration and vocal fry exercises

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