Clinical value of acoustic voice measures: a retrospective study

Abstract

Within this study a retrospective analysis of clinical voice perturbation measures, Dysphonia Severity Index and subjective perceived hoarseness was performed to determine their value under clinical aspects. The study included the data of 580 healthy and 1,700 pathologic voices, which were investigated under the following aspects. The relevant parameters were identified and their interrelation determined. Group differences between healthy and pathologic voices were figured out and investigated if voice quality measures allowed an automatic diagnosis of voice disorders. The analysis revealed significant changes between the clinical groups, which indicate the diagnostic relevance of voice quality measures. However, an individual diagnosis of the underlying voice disorder failed due to a vast spread of the parameter values within the respective groups. Classification accuracies of 75-90% were achieved. The high misclassification rate of up to 25% implied that in voice disorder diagnosis, the individual interpretation of the parameter values has to be done carefully.

Diagrama de desvio fonatório e análise perceptivo-auditiva pré e pós-terapia vocal

“…Some characteristics of the treatment were not considered, such as number and duration of therapy sessions. However, all patients received a personalized treatment program based on techniques withscientific evidence (11)(12)(13)(14)(15) .Treatment outline was directed to vocal hygiene, vocal psychodynamics and vocal training, with exercises done during sessions and at home (16) . The material used for analysis was the sustained vowel /ε/, in habitual frequency and intensity, recorded at two different moments: pre and post vocal therapy.…”

The application of short-term efficiency analysis in diagnosing occupational voice disorders.

“…Obiektywne określenie wpływu wysiłku głosowego na funkcję fonacyjną krtani, czyli ocena stopnia wydolności narządu głosu, powoduje wiele trudności [12,13]. Vilkman [8] na podstawie cyklu badań laboratoryjnych stwierdził, że czułym wskaźnikiem hiperfunkcji narządu głosu, będącej następstwem wysiłku głosowego, jest podwyższe-nie F0, czyli wzrost liczby drgań fałdów głosowych w jednostce czasu.…”

Vocal Fold Vibratory Characteristics in Normal Female Speakers From High-Speed Digital Imaging

“…[20][21][22][23][24] However, those studies also cautioned that because there were wide individual variations in vibratory characteristics in both of these groups of speakers, in response to different phonatory tasks the clinical application of such measurements might not be straightforward. 4,25,26 Thus, a more systematic study of vibratory patterns is needed to take into account gender and tasks. It is also imperative that a more sensitive tool be used to tease out the relevant vibratory parameters that could ultimately separate speakers into different voice groups.…”