ИСТИНА

In order to determine the connection between Persian word accent and the characteristics of laryngeal work, an instrumental phonetic study was held. Persian speech was recorded using the EGG glottograph in a two-channel mode, with microphone and glottographic signals registered separately. The syllable nucleuses were segmented, processed with Praat speech analysis software and SPSS statistical package. Since we worked with relative values, gender, accent and quality of the vowels were regarded as independent variables. Subsonic frequency, vertical laryngeal position, pitch and duration were considered as dependent variables. When examining the correlation according to a single-factor model, pitch increased by 4.6%, which is consistent with previous acoustic studies on Persian speech. Subsonic frequency proved statistically significant for marking accented syllable. The connection between syllable nucleus duration and vertical larynx position with stress turned out statistically insignificant. In a follow-up study, the material was analyzed using two- and three-factor models, with the results generally confirming the conclusions of the first experiment, but revealing additional regularities. Thus, laryngeal correlate of Persian word accent was detected with the following pattern: marking of the stressed syllable in Persian along with the increase in pitch is also characterized by simultaneous reduction of subsonic frequency.