Estimation de la fréquence des formants basée sur une transformée en ondelettes complexes
Laurence Cnockaert, Jean Schoentgen, Francis Grenez.
The objective of this paper is to evaluate the performances of a formant estimation method in tracking variations due to the vocal tract movement during the production of sustained vowel. The formant frequency estimation is based on the instantaneous frequency obtained by means of a complex wavelet transform and is synchronised with the glottal cycle. Results for synthetic speech signals show that the precision of the formant frequency estimation is high. However, the estimated results are influenced by variations of the vocal frequency and variations of close formants. The method is illustrated for real speech.