Poster Presentation at the 161st Meeting of the Acoustical Society of America - May 2011

The movies and audio files below coincide with this poster:

Story, B.H., and Bunton, K., (May, 2011). Decomposition of vowel and consonant contributions to the time-varying vocal tract shape, J. Acoust. Soc. Am., 129(4), pt. 2 of 2, 2456.

The movies in the left column are based on X-ray microbeam fleshpoint tracking data (XRMB). The red dots represent the positions of the actual gold pellets that were tracked during data collection; the open red circles are "phantom" pellets that more accurately depict the air-tissue interface. The black lines plotted oblique to the centerline (black dots) represent the "cross-distance" measurement at each successive point within the vocal tract (see Story, 2007 ; Story, 2009). The movies run about 2.5 times slower than real time so that the movements can be more easily observed.

The movies in the right column have been created by mapping movement information from the XRMB data to the TubeTalker model of speech production. The techique is explained in the poster cited above and more details can be found in Story (2009). Each movie shows an animation of the vocal tract shape for a particular VCV. The leftmost subplot indicates the time-dependent change in the "mode coefficients" used to drive the vowel production part of the model, whereas the rightmost subplot shows the location (x-axis) and magnitude of the consonant constriction over the time course of the VCV. These movies also runs about 2.5 times slower than real time. Below each animation is an audio file of the output generated by TubeTalker for each VCV. These sounds are entirely simulated; the only information taken from the original data record (XRMB) was concerned with the change in shape of the vocal tract.

/ada/ XRMB movie

/ada/ simulation movie

/ada/ simulation (audio)
/ipa/ XRMB movie

/ipa/ simulation movie

/ipa/ simulation (audio)
/iki/ XRMB movie

/iki/ simulation movie

/iki/ simulation (audio)
/iga/ XRMB movie

/iga/ simulation movie

/iga/ simulation (audio)
/opae/ XRMB movie

/opae/ simulation movie

/opae/ simulation (audio)