Vocal Analysis Related to Changes in Frequency of Pure Tone Auditory Feedback.
10.3349/ymj.2008.49.4.610
- Author:
Sang Hyuk LEE
1
;
Kyung Chul LEE
;
Jae Ho BAN
;
No Hee LEE
;
Sung Min JIN
Author Information
1. Department of Otorhinolaryngology-Head and Neck Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea. strobojin@hanmail.net
- Publication Type:Original Article
- Keywords:
Pitch;
feedback
- MeSH:
Acoustic Stimulation;
Adult;
*Feedback;
Humans;
Male;
Pitch Perception/*physiology;
Voice/*physiology
- From:Yonsei Medical Journal
2008;49(4):610-614
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: Many studies have shown that subjects show a change of vocal fundamental frequency (F0) when phonating subjects hear their vocal pitch feedback shifted upward or downward. This study was performed to demonstrate whether vocal parameters [F0, intensity, jitter, shimmer, and noise to harmonic ratio (NHR)] in normal males respond to changes in frequency of pure tone masking. MATERIALS and METHODS: Twenty healthy male subjects participated in this study. Subjects vocalized /a/ vowel sounds while listening to a pitch- shift pure tone through headphones (upward pitch-shift in succession: 1kHz to 2kHz and 1kHz to 4kHz at 50dB or 80dB, respectively, downward pitch-shift in succession: 1kHz to 250Hz and 1kH to 500Hz at 50dB or 80dB, respectively). RESULTS: Vocal intensity, F0, was increased, whereas jitter was decreased as the pitch of pure tone was shifted upward. However, there was no correlation between shimmer and NHR with pitch-shift feedback for pure tones. Unlike vocal pitch- shift feedback in other studies, upward pitch-shift feedback of pure tones caused the vocal F0 and intensity to change in the same direction as pitch-shift. CONCLUSION: The results of this study demonstrated that auditory kinesthetic feedback is affected by pitch-shift in pure tone.
