engleski

Interpopulation Differences in Acoustic Characteristics of Phonation

The porpose of this study was to investigate possible differences in acoustic characteristic of phonation between populations of European and African origin. The subjest were 33 adult males divided in two groups. Group One consisted of 17 men of African origin, and Group Two included 16 men of European origin. All subjest werw without vocal pathology at the time of investigation, smokers and non-smokers. Sustained phonation of vowel /a/ was acoustically analyzed by Real-time Frequency Analyzer (Bruel and Kjear 2123). Variables included f0 intensity of f0 intensity of harmonics 1-7, jitter and noise level intensity.One-way variance analysis showed statistically significant difference between the two groups in intensity of the second harmonic only. The same analysis has been repeated with non-smokers and showed statistically differences in intensities of the second and third harmonic leading of asumption that there may be fine differences between samples in factor structures. It could be possible that these differences reflect psychoacoustic level.

acoustic characteristics; phonation; origins

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