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a common space & database for harmonic overtones

TSAI Chen-Gia, Ph.D. Acoustics, Taiwan



Vocal fold vibration and singing


* Ultrasonic imaging of vocal folds
* Vocal fold vibration as sea waves on a porous seabed
* Overtone singing & high-frequency vocalization
* Growl voice & spine stability


Chen-Gia Tsai
Assistant Professor, Graduate Institute of Musicology
National Taiwan University, Taipei, TAIWAN

Ph.D., Musikwissenschaft
Humboldt-University Berlin, Germany
Research Interests
Mechanics of the Chinese membrane flute

* Acoustic effects of the dizi membrane
* Linear effects of the membrane: impedance
* Nonlinear effects of the membrane I: jump phenomena and wrinkles in the membrane
* Nonlinear effects of the membrane II: spectral features

Perception of musical sounds

* Brightness and spatial effects
* Helmholtz's hollowness and nasality
* Roughness induced by subharmonics

Vocal fold vibration and singing

* Ultrasonic imaging of vocal folds
* Vocal fold vibration as sea waves on a porous seabed
* Overtone singing & high-frequency vocalization
* Growl voice & spine stability

Biomusicology

* Absolute pitch
* Music & biological motor system
* Chinese opera music & memetics

Selected Publications
Journal papers

C.G. Tsai (2004) Absolute pitch: studies in cognitive psychology. Guandu Music Journal 1, 77-92.

C.G. Tsai (2005) Chaotic behavior of performer's vocalizations: an interdisciplinary study of growl voices. Taipei Theatre Journal 2, 39-62.

C.G. Tsai (2006) Disease and Composing: Syphilis in Smetana, Wolf, and Schubert. Formosan Journal of Music Research 3, 91-106.

Chen-Gia Tsai, Yio-Wha Shau, Hon-Man Liu, and Tzu-Yu Hsiao. Laryngeal mechanisms during human 4 kHz vocalization studied with CT, videostroboscopy, and color Doppler imaging (accepted by Journal of Voice)
Conference papers

C.G. Tsai (2003) Relating the harmonic-rich sound of the Chinese flute (dizi) to the cubic nonlinearity of its membrane (poster). Stockholm Music Acoustics Conference 2003, August 6-9.

C.G. Tsai (2004) Helmholtz's nasality revisited: physics and perception of sounds with predominance of upper odd-numbered harmonics (poster). Proceedings of the International Symposium on Musical Acoustics, March 31-April 3, Nara, Japan.

C.G. Tsai (2004) Auditory grouping in the perception of roughness induced by subharmonics: empirical findings and a qualitative model (oral). Proceedings of the International Symposium on Musical Acoustics, March 31-April 3, Nara, Japan.

J.H. Chen, and C.G. Tsai (2004) Experimental research of the flow field in a brass mouthpiece-like channel using Particle Image Velocimetry (poster). Proceedings of the International Symposium on Musical Acoustics, March 31-April 3, Nara, Japan.

C.G. Tsai, Y.W. Shau, and T.Y. Hsiao (2004) False vocal fold surface waves during Sygyt singing: a hypothesis (oral). International Conference on Voice Physiology and Biomechanics, August 18-20, Marseille, France.

C.G. Tsai (2004) The timbre space of the Chinese membrane flute (dizi): physical and psychoacoustical effects (invited). 148th Meeting of the Acoustical Society of America, November 15-19, San Diego.

C.G. Tsai (2005) Multi-pitch effect on cognition of solo music: examples of the Chinese flute, Jew's harp and overtone singing (oral). International Symposium on Body & Cognition, June 4-5, Taipei, Taiwan.

C.G. Tsai, W. Auhagen (2005) Intonation, tone range and timbre of the Chinese flute (dizi): a Duffing oscillator model of the dizi membrane (oral). Conference on Traditional Music Instruments, September 10-11, Taipei, Taiwan.

C.G. Tsai (2005) Disease and composing: syphilis in Smetana, Wolf, and Schubert (oral). Taiwan Symposium on Musicology, November 11-12, Taipei, Taiwan.

C.G. Tsai, T.Y. Hsiao, Y.W. Shau, and J.H. Chen (2006) Towards an intermediate water wave model of vocal fold vibration: Evidence from vocal-fold dynamic sonography (oral). International Conference on Voice Physiology and Biomechanics, July 12-14 2006, Tokyo, Japan.

C.G. Tsai, Y.W. Shau, and T.Y. Hsiao (2006) Vocal fold wave velocity in the cover and body layers measured in vivo using dynamic sonography (oral). 7th International Conference on Advances in Quantitative Laryngology, Voice and Speech Research, October 6-7, 2006, Groningen, the Netherlands.

C.G. Tsai (2006) Inharmonic sounds of bowed strings in Western music and Beijing opera (oral). 4th Joint Meeting of the Acoustical Society of America and the Acoustical Society of Japan, 28 November-2 December, Honolulu, Hawaii, USA.
Links

* Music Acoustics Laboratory at UNSW (impedance measurements of the dizi were performed there)
* Mitzi Meyerson's homepage (my favorite harpsichordist)
* Introduction to the Qin
* Learn traditional Chinese painting
* Liu Fang's pipa and guzheng music world

[Chinese version]
Latest update: 12/2006

http://homepage.ntu.edu.tw/~gim/gia/index.html

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