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
|
| Title | Auditory-visual Perception of Tone and Lombard Speech |
| Speaker |
|
| 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
|
| Title | Speech Aerodynamics: Sound Patterns involving Nasalization and Oralization |
| Speaker |
|
| 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 |