PMID: 15244016Jul 13, 2004Paper

Voice acoustic analysis of normal Taiwanese adults

Journal of the Chinese Medical Association : JCMA
Chen-Chi Wang, Hui-Tsu Huang

Abstract

Because of advances in voice research, voice acoustic analysis including fundamental frequency (F0), sound pressure level (SPL), jitter, shimmer, harmonics-to-noise ratio (H/N ratio), and maximum phonation time (MPT) can now be easily recorded and analyzed with a computer. Because these systems are widely used in clinical practice, this study was designed to establish the normal acoustic analysis parameters in normal Taiwanese adults. From Mar. 2002 to Dec. 2002, 45 Taiwanese women and 45 Taiwanese men younger than 50 years old were recruited as subjects for this study. The commercially available Computer Speech Lab and Aerophone II system manufactured by Kay Elemetrics Corp. were used to record the aforementioned acoustic data under comfortable phonation. Each gender was separated equally into 3 age subgroups. Then differences between gender and age subgroups were investigated by statistics software SPSS 10.0. Our results were compared with data from previous reports. The value of F0 (counting; vowel /a/) was greater for females (203.2 +/- 21.7; 213.4 +/- 25.4 Hz) than for males (118.3 +/- 17.3; 121.3 +/- 16.4 Hz). Conversely, the value of MPT was greater for males (28.0 +/- 9.4 sec) than for females (22.6 +/- 7.6 sec). There ...Continue Reading

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