Naslov
The indication of change of the acoustic characteristics of the voice in respect to hyperthyroidism

Autori
Škreb, Franjo ; Kovačić, Gordana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
4th Paneuropean Voice Conference

Mjesto i datum
Stockholm, Švedska, 26.08.2001. - 28.08.2001

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
hyperthyroidism; dysphonia; vocal fatigue; subjective voice complaints; hoarseness; F0; HNR; s/z ratio; vocal rise time; jitter; narrow-band spectrogram

Sažetak
The dysphonia of hyperthyroidism has not been carefully described. The study examines the acoustical characteristics of the voices of 18 female patients with hyperthyroidism (mean age 38.2 years). The phonation of the vowel /a/ was acoustically analyzed. Extraction of the F0, jitter, intensity and HNR, as well as spectrographic analysis was conducted. Maximum phonation and friction time, and vocal rise time were also investigated. Subjects were aksed about voice complaints. Half of the subjects reported subjective voice complaints, and the most frequent were lower voice pitch and hoarseness. Indeed, the results of the acoustic analyses confirmed lower F0 (172 Hz), pathological jitter (1.33%) and very short vocal rise time (50 ms), which are the features of dysphonia. Increased s/z-ratio (1.32) suggested a tendency toward insufficient respiratory function. It may be the result of the weakness of the respiratory musculature, so evaluation of the respiration function would be useful in future study designs. Spectrograms showed reduced loudness and more or less strong noise components. The results suggest that the voice problems may also be taken as clinical symptoms of hyperthyroidism.

Izvorni jezik
Engleski

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