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The spectrum of voice disorders – presentation
Published in Stephanie Martin, Working with Voice Disorders, 2020
Lateral laryngeal constriction has been described as ‘a type of tension fatigue syndrome in which the larynx tends to be squeezed or hyperadducted in a side to side direction. It may exist either at the glottic or supraglottic level’ (Morrison and Rammage, 2000). The precipitating factors vary from upper respiratory tract infections (URTI) to anxiety and psychogenic influences. The vocal folds, and sometimes also the supraglottic muscles, contract in this ‘squeezing’ manner during phonation, producing a tense and forced vocal quality. The mucosal wave pattern during vibration may be reduced due to muscle stiffness. Although, as mentioned, this may be related to anxiety or the discomfort and coughing/throat-clearing symptoms of URTI, it can also be associated with a high level of voice demand in occupational voice users and the need to use voice for lengthy periods of time with few rest periods (Titze et al., 2007; Hunter and Titze, 2009). Not surprisingly, patients report discomfort in the neck and larynx as well as vocal fatigue and disturbance to breathing patterns. Attention to the disordered vocal technique and voice management is necessary. Vocal loading advice is essential.
The effect of a prolonged and demanding vocal activity (Divya Prabhandam recitation) on subjective and objective measures of voice among Indian Hindu priests
Published in Speech, Language and Hearing, 2022
S. Y. Aishwarya, S. V. Narasimhan
Such high variability in the result of the acoustic analysis reported by the earlier studies could be attributed to various methodological differences involving the vocal loading task between the studies (Jiang, Zhang, MacCallum, Sprecher, & Zhou, 2009), differences in software used for analysis or pitch extraction algorithms (Herzel, Berry, Titze, & Saleh, 1994) and differences in participant selection (Jiang et al., 2009). The duration of vocal loading task employed in the studies may also have influenced the results of the acoustic analysis. Some studies have considered fifteen minutes as the duration of the vocal loading tasks (Linville, 1995), forty-five minutes (Laukkanen et al., 2004; Lauri, Alku, Vilkman, Sala, & Sihvo, 1997) and most of the studies have commonly considered two hours duration of the vocal loading tasks (Chang & Karnell, 2004; Kelchner et al., 2006; Remacle et al., 2014; Remacle, Finck, et al., 2012; Remacle, Morsomme, et al., 2012; Solomon & DiMattia, 2000; Solomon, Glaze, Arnold, & Van Mersbergen, 2003; Stemple et al., 1995). Furthermore, the material used for extracting the acoustic parameters of voice varies across the studies. Vilkman et al. (1999) used reading whereas, Gelfer et al. (1991) employed sustained production of vowel for vocal loading task.
Work-related communicative profile of radio broadcasters: a case study
Published in Logopedics Phoniatrics Vocology, 2019
Lady Catherine Cantor-Cutiva, Pasquale Bottalico, Eric Hunter
Our results on the short-term effect of radio broadcasting on voice production indicate a tendency to slightly increase the fundamental frequency (Fo) in the speech sample (reading) recorded at the end of the week (maximal work-related voice use) compared with the beginning of the work week (pre- work-related voice use). Previous research has suggested that increased Fo after vocal loading tasks may be an indication of vocal fatigue [18,40–42]. From the physiological point of view, it has been hypothesized that when a speaker experiences vocal loading, the thyroarytenoid (TA) becomes fatigued, which inhibits maintaining a lower pitch, and a greater level of fatigue may eventually be the result [40]. A second hypothesis is that higher Fo after vocal loading tasks may reflect an increased muscle tonus as an adaptation to loading [43,44].
Analysing the vocal behaviour of teachers during classroom teaching using a portable voice accumulator
Published in Logopedics Phoniatrics Vocology, 2018
Manfred Nusseck, Bernhard Richter, Claudia Spahn, Matthias Echternach
The relationship between vocal loading, voice problems, noise SPL and voice SPL is not clear. Lyberg-Åhlander et al. (19) found that teachers with self-reported voice problems generally spoke quieter than the teachers without a voice problem. Likewise, a high vocal loading is associated with an increased chance of voice problems. The present study found that teachers with a low correlation between voice SPL and noise SPL tend to speak louder and more often. Thus, the low correlation teachers clearly have a higher vocal loading and should then self-report more voice problems, which in turn suggest that they should be speaking more quietly. However, maybe these teachers have not developed considerable vocal problems yet. This is particularly likely given that the teachers here are at the beginning of their career and are thus less likely to have developed occupational-related health issues. Although longitudinal studies are needed to resolve this issue, the results certainly suggest that it might be useful to help these teachers learn different practices in order to avoid potential future health concerns.