Regulation of Vocal Intensity during Vocal Fry Phonation

Abstract

As yet, there are no data concerning the regulation of vocal intensity over a range of frequencies in vocal fry phonation. The purpose of this study was to examine changes in vocal intensity and fundamental frequency during vocal fry phonation. Subjects sustained vocal fry for 3 sec at three points in their total vocal fry range and the intensity was recorded. Thereafter, the subjects sustained vocal fry at the three recorded intensities previously obtained and the fundamental frequency recorded. The findings indicated that vocal fry is produced at low intensities in relation to intensity levels noted by previous investigators for the modal and falsetto registers. Furthermore, a dependency between the intensity level and the fundamental frequency of fry phonation for each subject was noted.