The Effect of the Heartbeat on Vocal Fundamental Frequency Perturbation Signal-averaging and autocorrelation analysis revealed that the cardiovascular system exerts a modest but consistent influence on vocal fundamental frequency (F0), accounting for approximately 0.5% to 20% of the absolute F0 perturbation (jitter) measured during a sustained phonation. There was also a marked trend for this percentage to decrease with increasing ... Research Article
Research Article  |   September 01, 1989
The Effect of the Heartbeat on Vocal Fundamental Frequency Perturbation
 
Author Affiliations & Notes
  • Robert F. Orlikoff
    Teachers College—Columbia University
  • R. J. Baken
    Teachers College—Columbia University
Article Information
Research Articles
Research Article   |   September 01, 1989
The Effect of the Heartbeat on Vocal Fundamental Frequency Perturbation
Journal of Speech, Language, and Hearing Research, September 1989, Vol. 32, 576-582. doi:10.1044/jshr.3203.576
History: Received June 20, 1988 , Accepted December 16, 1988
 
Journal of Speech, Language, and Hearing Research, September 1989, Vol. 32, 576-582. doi:10.1044/jshr.3203.576
History: Received June 20, 1988; Accepted December 16, 1988

Signal-averaging and autocorrelation analysis revealed that the cardiovascular system exerts a modest but consistent influence on vocal fundamental frequency (F0), accounting for approximately 0.5% to 20% of the absolute F0 perturbation (jitter) measured during a sustained phonation. There was also a marked trend for this percentage to decrease with increasing vocal F0. Estimated mean "deterministic jitter" (J) values of 3.7 µsec (SD = 3.2) and 0.9 µsec (SD = 0.5) were derived from 6 normal male and 6 normal female subjects, respectively, with an overall mean of 2.3 µsec (SD =2.7). These values represent approximately 6.9% of the mean total jitter for men and 2.4% of the mean total jitter for women, or about 4.6% for all subjects. The results are discussed in terms of their significance regarding more reliable vocal jitter measurement.

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