  We describe an arrangement for simultaneous recording of speech and geometry
of vocal tract in patients undergoing surgery involving this area. Experimental
design is considered from an articulatory phonetic point of view. The speech
and noise signals are recorded with an acoustic-electrical arrangement. The
vocal tract is simultaneously imaged with MRI. A MATLAB-based system controls
the timing of speech recording and MR image acquisition. The speech signals are
cleaned from acoustic MRI noise by a non-linear signal processing algorithm.
Finally, a vowel data set from pilot experiments is compared with validation
data from anechoic chamber as well as with Helmholtz resonances of the vocal
tract volume.
