A Preliminary Study on Vocal Tract System of Chinese Whispered Vowels

This paper concentrates on the abstraction of parameters from vocal tract transfer function of Chinese whispered vowels. As there is no fundamental frequency in whispered speech, these parameters become more prominent in speech analysis and synthesis. It is proved that the proposed algorithm for formant estimation is effectual and the gain of vocal tract transfer function can be utilized for tune analysis. The comparison of these parameters between Chinese whispered vowels and voiced ones is the basis for whispering recognition and conversion. The ratios of formants excursion, bandwidths movement, gain and energy variation are calculated for scalar weight coefficients of voice personality transformation.