## Interspeech'2005 - Eurospeech## Lisbon, Portugal |

Vocal tract data from 3D cine-MRI are used together with synchronised acoustics to evaluate a linear regression model for inversion. The first two principal components of vocalic area functions are predicted with correlations 0.99 and 0.97 respectively, from 24 FFT-cepstra measured in the frequency band 0-4 kHz. This best regression model together with the two component representation yields mean absolute errors of 0.37 cm2 in section area and 0.15 cm in vocal tract length.

__Bibliographic reference.__
Mokhtari, Parham / Kitamura, Tatsuya / Takemoto, Hironori / Honda, Kiyoshi (2005):
"Vocal tract area function inversion by linear regression of cepstrum",
In *INTERSPEECH-2005*, 3201-3204.