Send to:

Choose Destination
See comment in PubMed Commons below
J Voice. 1995 Jun;9(2):173-81.

Vocal stability and vocal tract configuration: an acoustic and electroglottographic investigation.

Author information

  • 1Laryngology Laboratory, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA.


Previous studies have reported differences in vocal fundamental frequency perturbation (jitter) and amplitude perturbation (shimmer) measures as a function of vowel type. However, it is not clear from those studies whether these effects derive from modifications in the shape of the vocal tract or from intrinsic vowel differences in mean fundamental frequency and vocal amplitude. The present study sought to address this issue using simultaneously obtained acoustic and electroglottographic (EGG) signals. Ten normal adult men and 10 normal adult women prolonged three maximally stable productions of the vowels [symbol: see text]. Vocal sound pressure level was maintained at 74 +/- 4 dB, while mean fundamental frequency was maintained at 110 and 220 Hz +/- 0.5 st for the male and female subjects, respectively. Results indicated that when vocal frequency and intensity are controlled, acoustic and EGG measures of mean jitter and shimmer do not show a significant vowel effect.

[PubMed - indexed for MEDLINE]

LinkOut - more resources

Full Text Sources

Other Literature Sources

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk