High-frequency power ratio of breathy voice

Digital technological advances have made detailed voice analysis possible. This report proposes, with the use of such equipment, a new method of quantifying differences in the high-frequency content of normal and breathy voices. The high-frequency power ratio, a ratio of high-frequency power versus...

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Bibliographic Details
Published inThe Laryngoscope Vol. 102; no. 3; p. 267
Main Authors Shoji, K, Regenbogen, E, Yu, J D, Blaugrund, S M
Format Journal Article
LanguageEnglish
Published United States 01.03.1992
Subjects
Female
Humans
Male
Sound Spectrography - methods
Speech Acoustics
Voice Quality
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Summary:Digital technological advances have made detailed voice analysis possible. This report proposes, with the use of such equipment, a new method of quantifying differences in the high-frequency content of normal and breathy voices. The high-frequency power ratio, a ratio of high-frequency power versus total power, was calculated as the lower limit of the high-frequency range (Fc) and varied from 1 to 10 kHz. The high-frequency power ratio values of two groups, 16 normal and 24 breathy voice individuals, were then compared. Three breathy individuals were also studied after type I thyroplasty. High-frequency power ratio values measured at an Fc of 6 kHz significantly separated normal from breathy voices. The specifications provided are appropriate for both the commercial voice lab and for clinical resources. Furthermore, a high-frequency power ratio (6 kHz) is a useful tool for the evaluation of phonosurgery.
ISSN:0023-852X
DOI:10.1288/00005537-199203000-00007