Electroglottographic Analysis of Actresses and Nonactresses' Voices in Different Levels of Intensity

Master, Suely; Guzmán, Marco; Miranda, Helder; Lloyd, Adam

doi:10.1016/j.jvoice.2012.10.010

Cited by 12 publications

(2 citation statements)

References 30 publications

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“…This might reflect better vocal control as the result of vocal training, which might also reduce the amount of vocal fatigue. However, the increase in the ƒ o for loud phonation was not only shown for untrained voice users but also for singers and actresses [ 66 , 70 ] who, because of their training, should not behave in a fundamentally uneconomic way. However, it is not unlikely that singers, for example, choose appropriate resonance strategies according to their genre (anti-megaphone vocal tract for classical singers or megaphone-shaped vocal tract for contemporary music singer [ 71 , 72 ]) for higher phonation, which could additionally support the vocal folds in their vibration due to source–filter interactions.…”

Section: Discussionmentioning

confidence: 99%

Vocal Behavior of Teachers Reading with Raised Voice in a Noisy Environment

Nusseck

Immerz

Richter

et al. 2022

IJERPH

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(1) Objective: Teaching is a particularly voice-demanding occupation. Voice training provided during teachers’ education is often insufficient and thus teachers are at risk of developing voice disorders. Vocal demands during teaching are not only characterized by speaking for long durations but also by speaking in noisy environments. This provokes the so-called Lombard effect, which intuitively leads to an increase in voice intensity, pitch and phonation time in laboratory studies. However, this effect has not been thoroughly investigated in realistic teaching scenarios. (2) Methods: This study thus examined how 13 experienced, but vocally untrained, teachers behaved when reading in a noisy compared to quiet background environment. The quiet and noisy conditions were provided by a live audience either listening quietly or making noise by talking to each other. By using a portable voice accumulator, the fundamental frequency, sound pressure level of the voice and the noise as well as the phonation time were recorded in both conditions. (3) Results: The results showed that the teachers mainly responded according to the Lombard effect. In addition, analysis of phonation time revealed that they failed to increase inhalation time and appeared to lose articulation through the shortening of voiceless consonants in the noisy condition. (4) Conclusion: The teachers demonstrated vocally demanding behavior when speaking in the noisy condition, which can lead to vocal fatigue and cause dysphonia. The findings underline the necessity for specific voice training in teachers’ education, and the content of such training is discussed in light of the results.

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Section: Discussionmentioning

confidence: 99%

Vocal Behavior of Teachers Reading with Raised Voice in a Noisy Environment

Nusseck

Immerz

Richter

et al. 2022

IJERPH

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“…To date, variations in the glottal source (e.g., vocal fold contact and glottal flow) in performers have been more easily and more frequently investigated than vocal tract manipulations, usually using electroglottography (EGG) or flow glottography [10]–[14]. Waveforms of glottal contact and flow collected using EGG and flow glottography respectively, have been analysed quantitatively using a range of different algorithms, yielding various results and interpretations [15]–[17].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Measurement of Vocal Fold Vibration in Male Radio Performers and Healthy Controls Using High-Speed Videoendoscopy

et al. 2014

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PurposeAcoustic and perceptual studies show a number of differences between the voices of radio performers and controls. Despite this, the vocal fold kinematics underlying these differences are largely unknown. Using high-speed videoendoscopy, this study sought to determine whether the vocal vibration features of radio performers differed from those of non-performing controls.MethodUsing high-speed videoendoscopy, recordings of a mid-phonatory/i/ in 16 male radio performers (aged 25–52 years) and 16 age-matched controls (aged 25–52 years) were collected. Videos were extracted and analysed semi-automatically using High-Speed Video Program, obtaining measures of fundamental frequency (f0), open quotient and speed quotient. Post-hoc analyses of sound pressure level (SPL) were also performed (n = 19). Pearson's correlations were calculated between SPL and both speed and open quotients.ResultsMale radio performers had a significantly higher speed quotient than their matched controls (t = 3.308, p = 0.005). No significant differences were found for f0 or open quotient. No significant correlation was found between either open or speed quotient with SPL.DiscussionA higher speed quotient in male radio performers suggests that their vocal fold vibration was characterised by a higher ratio of glottal opening to closing times than controls. This result may explain findings of better voice quality, higher equivalent sound level and greater spectral tilt seen in previous research. Open quotient was not significantly different between groups, indicating that the durations of complete vocal fold closure were not different between the radio performers and controls. Further validation of these results is required to determine the aetiology of the higher speed quotient result and its implications for voice training and clinical management in performers.

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