Abstract
Practical methods of analysis with low computational complexity are presented for the determination of acoustic parameters from radiated sound pressure spectra of sustained sung vowels. Sound spectra are analyzed in order to obtain the fundamental vocal source frequency F0 and its harmonics, the corresponding musical pitch, the first few “formant” frequencies F1, F2, possibly up to F5, that are apparent from the harmonic contour, a nominal vocal tract shape derived from (F1, F2), a measure of formant-to-harmonic tuning of F1 and F2, indication of the presence of a singer’s formant, and a measure of the rate of vibrato. Real-time determination and display of these parameters are integrated into the singing voice analysis software EVOCANTO, a graphical interactive didactic computer program which is intended as a teaching aid for singing tutors and students. Examples of the use of EVOCANTO are presented for typical male and female singing voice registers.
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