Fundamental Frequency Investigation of Vocal Fry and Harshness The purpose of this study was to investigate differences in mean fundamental frequency between vocal fry and harshness. Ten adult males recorded a standard passage in their normal voices and then in vocal fry. A second group of 10 males whose voices had been clinically diagnosed as harsh recorded the ... Reports
Reports  |   September 1968
Fundamental Frequency Investigation of Vocal Fry and Harshness
 
Author Notes
  • © 1968 American Speech-Language-Hearing AssociationAmerican Speech-Language-Hearing Association
Article Information
Reports   |   September 1968
Fundamental Frequency Investigation of Vocal Fry and Harshness
Journal of Speech, Language, and Hearing Research, September 1968, Vol. 11, 590-594. doi:10.1044/jshr.1103.590
History: Received October 9, 1967
 
Journal of Speech, Language, and Hearing Research, September 1968, Vol. 11, 590-594. doi:10.1044/jshr.1103.590
History: Received October 9, 1967

The purpose of this study was to investigate differences in mean fundamental frequency between vocal fry and harshness. Ten adult males recorded a standard passage in their normal voices and then in vocal fry. A second group of 10 males whose voices had been clinically diagnosed as harsh recorded the passage in their usual harsh voice. The Fundamental Frequency Indicator and the phonellegraph were used to obtain fundamental frequency data from these recordings. A mean fundamental frequency of 36.4 Hz with a range of 30.9 to 43.7 Hz was found for vocal fry; the mean of the harsh voices was 122.1 Hz within a range of 103.7 to 180.0 Hz. Normal fundamental frequencies ranged from 98.4 to 125.1 Hz with a mean of 110.6 Hz. The major finding was that vocal fry can be differentiated from clinical harshness and normal phonation on the basis of mean fundamental frequency. A secondary finding was that clinical harshness and normal phonation could not be so differentiated.

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