Issue N# 1 - 2012
Acoustic study of sustained vowels made by patients with recurrent nerve paralysis after thyroidectomy
Authors : Fauth C, Vaxelaire B, Rodier J-F, Volkmar P-P, Sock R. (Strasbourg)
Ref. : Rev Laryngol Otol Rhinol. 2012;133,1:27-32.
Article published in french
Downloadable PDF document french
The objective of this work is to evaluate the consequences of thyroid surgery on the voice of patients suffering from recurrent paralysis. The consequences of the surgery are evaluated using a corpus of sustained vowels in order to identify the various disruptions that this procedure may produce. This research also looks for possible compensatory and/or readjustment strategies that can be used by a patient alone and with the help of speech therapy. Acoustic measurements considered are fundamental frequency (F0), Harmonics-to-Noise Ratio (HNR), and vowel space area. This is a longitudinal study, as all patients are recorded once a month during three months after surgery. Results reveal a modification of all parameters in the early recording stages. However, time and speech therapy contribute to obtaining expected values of the measured parameters, and thus to improvement of vocal quality.
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