***** Vocal Folds Imaging and Dynamics *****

Depth Kymography, 3D-imaging, and numerical simulations

of human vocal folds vibrations during phonation.

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Keywords:	- experimental: human vocal folds, laryngoscope design, laser triangulation, high-speed camera, position-sensitive array detector, clinical measurements; - numerical simulations: two-masses model with horizontal and vertical freedom of motion, iterative solutions of equations of motion, alternating with solution of flows-pressures model using electrical circuits analogue; - comparisons : of measurements and simulations, as functions of time.
Publications:	Instrument, Optics, Simulations + Comparisons with measurements See also PPT- file: Vocal Folds Dynamics PPT-file (in PDF) and "List of Publications" (from no. 315 ...).
VIDEO	See VIDEO of the Dynamics of the Vocal folds (incl. explanation)
DOWNLOAD:	Download simulation program VocalFolds.zzz here (change *.zzz -> *.zip, then unzip, then change *.fff -> *.exe and run)

Human Vocal Folds: 1, 2: right/left (!) fold; 3: blood vessel; 4: open glottis	Depth-kymography: laser line imaging using triangulation	Depth kymograph
Depth-kymography image of vocal folds surface as a function of time	Numerical simulations: Two-masses model with springs and dampers.	Comparison of measurements and simulations, at different times during vibrational cycle. Movie: VFDyn-movie

EXAMPLES OF SCREENS: (All screens also have print and file output in table format (compatible with Excel-like programs)

↓Fig.1. Start screen	↓Fig.2. Input screen (for references see publications)
↓Fig.3. Running simulation (coordinates, pressures and flows)	↓Fig.4. Running simulation with sounds and movie panel shown.
↓Fig.5. Results: pivot plot: changes in parameters upon changes in 1 par.	↓Fig.6. As Fig.5, but 3D-plot (log.)
↓Fig.7. Results: Slope plot: relative mutual changes in parameters
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