Sophia University Open Research Center Research Workshops 1 and 2, 2008

April 23rd, 2008

Sophia University Open Research Center will hold the following research workshops. The workshops will be held in English. No pre-registration or registration fee is required. All are welcome to attend.
Workshop 1
Date and Time:April 8, 2008 (Tue), 15:15 – 16:45
Speaker:Hansjoerg Mixdorff
Title:Auditory-visual Perception of Tone and Lombard Speech

Workshop 2
Date and Time:April 23, 2008 (Wed), 12:00 – 14:00
Speaker:John J. Ohala
Title:Speech Aerodynamics: Sound Patterns involving Nasalization and Oralization






Sophia University Open Research Center Research Workshop 1, 2008
Date & time April 8, 2008 (Tue), 15:15 – 16:45
Location Sophia University, Bldg #4, Rm. 190
Access to the Yotsuya Campus
http://www.sophia.ac.jp/E/E_universityinfo.nsf/Content/yotsuya_access
Campus map
http://www.sophia.ac.jp/E/E_universityinfo.nsf/Content/yotsuya_map
Title Auditory-visual Perception of Tone and Lombard Speech
Speaker
Hansjoerg Mixdorff
(Berlin University of Applied Sciences)
Abstract The author reports on experiments concerning the auditory-visual perception of tones and segments in tone languages. He examines various paradigms including noise masking, devoicing and excision of syllables from running speech. Results include that video images facilitate tone and segmental perception, but the auditory-visual seems to depend on the experiment design employed.
Sophia University Open Research Center Research Workshop 2, 2008
Date & time April 23, 2008 (Wed), 12:00 – 14:00
Schedule 12:00 Light snacks
12:40 Talk by Prof. John J. Ohala
13:30 Discussion
Location Sophia University, Bldg. #7, 14th floor, Tokubetsu Kaigi-shitsu
Access to the Yotsuya Campus
http://www.sophia.ac.jp/E/E_universityinfo.nsf/Content/yotsuya_access
Campus map
http://www.sophia.ac.jp/E/E_universityinfo.nsf/Content/yotsuya_map
Title Speech Aerodynamics: Sound Patterns involving Nasalization and Oralization
Speaker
John J. Ohala
(Professor Emeritus, Department of Linguistics, University of California, Berkeley)
Abstract From an aerodynamic point of view the vocal tract as used for speech consists of a system for producing air under pressure (due to the action of the lungs), and using the pressure differential across the vocal cords to produce voicing (vibrations of the vocal cords). The vocal tract beyond the glottis serves as a conduit both for the DC airflow exiting the glottis and the AC pressure variations that constitute the acoustic aspect of speech. The supra-glottal vocal tract contains various “valves” (lips, tongue apex, tongue dorsum, and the velum) that can modulate both the DC and the AC variations thus shaping the vocal cord sound via resonance and producing AC sounds in addition to that provided by the vocal cords (to produce stops, fricatives, trills, ejectives, clicks, etc). In this presentation, I will focus on the physiological constraints imposed on speech sounds by virtue of the velic valve’s control of whether the DC flow and the AC modulations can be directed just through the oral cavity, just through the nasal cavity, or both.
Registration, inquiries, etc
Registration fee none
Language English
Pre-registration Not necessary
Sponsor Sophia University Open Research Center
Direct inquiries to Dr. Takayuki ARAI
Dept. of Electrical and Electronics Engineering
Sophia University
E-mail arai@sophia.ac.jp