This paper presents an analysis of the perceptual stability depending on formant position (Fl,F2,F3) and compares recent findings on vowel normalization to the corpus of synthesized and natural Croatian vowels. The vowels were analysed through the light of their spectral and perceptual volume and density. The obtained results for synthesized vowels mainly confirmed with published results but there were some deviations with female and child vowels.
Bibliographic reference. Stamenkovic, Milan / Bakran, Juraj / Tancig, Peter / Miletic, Marijan (1993): "Perceptive and spectral volumes of synthesized and natural vowels", In EUROSPEECH'93, 293-296.