https://scholars.lib.ntu.edu.tw/handle/123456789/327626
標題: | Effects of speech noise on vocal fundamental frequency using power spectral analysis | 作者: | TZU-YU HSIAO | 公開日期: | 2007 | 卷: | 28 | 期: | 3 | 起(迄)頁: | 343-350 | 來源出版物: | Ear and Hearing | 摘要: | OBJECTIVE: To investigate the relationship between auditory function and vocal fundamental frequency (F0) 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 F0s were obtained by using autocorrelation of the voice signals and were converted to cents to form a F0 sequence. The power spectrum of the F0 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 F0 is suggested regarding F0 modulations of <3 Hz. CONCLUSIONS: The auditory system helps control a stable F0 during sustained vowel production by decreasing F0 modulation at <3 Hz. Power spectral analysis of F0 may be used to assess the interaction between F0 production and auditory feedback. ? 2007 Lippincott Williams & Wilkins, Inc. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-34248165502&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/327626 |
DOI: | 10.1097/AUD.0b013e318047936f | SDG/關鍵字: | adult; article; binaural hearing; female; Fourier transformation; hearing acuity; human; human experiment; male; negative feedback; noise standard; normal human; phonation; spectroscopy; speech articulation; speech discrimination; Student t test; vocalization; vowel; Adult; Female; Humans; Male; Models, Biological; Noise; Perceptual Masking; Phonation; Phonetics; Sound Spectrography; Speech |
顯示於: | 醫學系 |
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