Perturbation measurements in untrained male voices' transitions from modal to falsetto register.
OBJECTIVE
Voice periodicity during transitions from modal to falsetto register still remains an unclarified question.


METHODS
We examined the acoustic and electroglottographic signals of 20 healthy untrained male voices' transitions from modal to falsetto register on the vowels /a, e, i, o, u, and æ/.


RESULTS
In addition to discontinuities in fundamental frequency (F0), an independent increase of jitter, relative average perturbation, and shimmer was observed during and apparently caused by the register transition. In falsetto, the jitter was higher than in the modal register. The contact quotient derived from the electroglottographic signal tended to be lower for higher than for lower F0.


CONCLUSIONS
Register transitions are associated with increase of perturbation.
Echternach
Matthias
M
Institute of Musicians' Medicine, Freiburg University Medical Center, Freiburg, Germany. matthias.echternach@uniklinik-freiburg.de
Sundberg
Johan
J
Zander
Mark F
MF
Richter
Bernhard
B
D000328:Adult; D006801:Humans; D008297:Male; D008875:Middle Aged; D010507:Periodicity; D010699:Phonation; D013061:Speech Acoustics; D014831:Voice; D055815:Young Adult