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http://ntur.lib.ntu.edu.tw/handle/246246/170655
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| Title: | Effects of Speech Noise on Vocal Fundamental Frequency Using Power Spectral Analysis |
| Authors: | 李國熙;蕭自佑;楊靜修;郭博昭
LEE, GUO-SHE;HSIAO, TZU-YU;YANG, CHERYL C. H.;KUO, TERRY BO-JAU |
| Contributors: | 耳鼻喉部 |
| Date: | 2007 |
| Issue Date: | 2009-10-14T08:42:41Z |
| Abstract: | Objective. To investigate the relationship between auditory function and vocal fundamental frequency (F-0) using binaural masking with speech noise during sustained vowel vocalization. Design: Eight healthy subjects were instructed to vocalize the sustained vowel /a/ at the intensities of 65 to 75 dBA and 90 to 100 dBA as steadily as possible. The phonations without noise masking were compared with the phonations under masking with 85-dBA speech noise presented to both ears through headphones. The F(0)s were obtained by using autocorrelation of the voice signals and were converted to cents to form a F-0 sequence. The power spectrum of the F-0 sequence was then acquired using fast Fourier transformation. Results: A significant increase in the power spectrum in the frequency range of < 3 Hz (p < 0. 05, paired Student t-test) appeared under noise masking. A negative feedback control of the auditory system on F-0 is suggested regarding F-0 modulations of < 3 Hz. Conclusions: The auditory system helps control a stable F-0 during sustained vowel production by decreasing F-0 modulation at < 3 Hz. Power spectral analysis of F-0 may be used to assess the interaction between F-0 production and auditory feedback . |
| Relation: | EAR AND HEARING v.28 n.3 pp.343-350 |
| Appears in Collections: | [ ] Peridocal Articles
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