Research on the changes in voice quality caused by tonsillectomy

The article presents the results of the research on the changes in voice quality caused by tonsillectomy. It was carried out in a group of 20 patients (12 male and 8 female). The voice was recorded on a E-MU 0404 USB sound card with a 24-bit A/C AK5385A convertor. Having analyzed the pronunciation of prolonged Polish vowels: /a/, /e/, /i/ and /u/, the researchers defined a set of parameters which differentiate the pronunciation before and after tonsillectomy. The results show that the differences in pronunciation might be observed due to dynamic properties of the articulatory track. Additional researches emphasize the usefulness of such recordings applying external E-MU 0404 USB sound card in the clinical environment.