Automated tracking of quantitative parameters from single line scanning of vocal folds: a case study of the 'messa di voce' exercise.
This article presents a novel application of the 'single line scanning' of the vocal fold vibrations (kymography) in singing pedagogy, particularly in a specific technical voice exercise: the 'messa di voce'. It aims at giving the singer relevant and valid short-term feedback. A user-friendly automatic analysis program makes possible a precise, immediate quantification of the essential physiological parameters characterizing the changes in glottal impedance, concomitant with the progressive increase and decrease of the lung pressure. The data provided by the program show a strong correlation with the hand-made measurements. Additional measurements such as subglottic pressure and flow glottography by inverse filtering can be meaningfully correlated with the data obtained from the kymographic images.
KULeuven University of Leuven, Neurosciences, Belgium; Federal Institute of Occupational Diseases , Av. de l'Astronomie, 1, B-1210 Brussels , Belgium.
Philippe H
PH
Dejonckere
Jean
J
Lebacq
Leonardo
L
Bocchi
Silvia
S
Orlandi
Claudia
C
Manfredi
D000162:Acoustics; D057205:Automation, Laboratory; D001696:Biomechanical Phenomena; D025461:Feedback, Physiological; D006801:Humans; D007734:Kymography / Q000379:methods*; D008297:Male; D010699:Phonation; D011312:Pressure; D063346:Singing; D013018:Sound Spectrography; D013997:Time Factors; D014732:Vibration; D014741:Video Recording; D014827:Vocal Cords / Q000502:physiology*
Feedback; flow glottography; high speed; messa di voce; singing; single line scanning; subglottic pressure; videokymography