| Autor: |
Anderson, Claire W., Yonovitz, A., Anderson, Wallace L. |
| Zdroj: |
Journal of the Acoustical Society of America; 1985, Vol. 78 Issue S1, pS56-S56, 1p |
| Abstrakt: |
In this study, the glottal function was obtained through the use of a reflectionless tube. This tube acted as a pseudoinfinite termination of the vocal tract. Male subjects phonated a neutral vowel (schwa) while target matching to tones throughout the vocal range. These waveforms were digitized at 61 440 samples per second for 1 s. Amplitude and frequency perturbations were obtained for cycle-to-cycle variations, as well as a normalized distribution. Spectral analysis of the digitized waveforms provided a simultaneous description of frequency modulation (jitter) and amplitude modulation (shimmer). Frequency perturbations monotonically increased (approximately 1%) with target frequency. Amplitude deviations will be discussed as they relate to the frequency modulation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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