ISCA Archive ECST 1987
ISCA Archive ECST 1987

Direct measurement of vocal tract shape - articulography

J. Hohne, P. Schönle, B. Conrad, H. Veldscholten, P. Wenig, H. Fakhouri, N. Sandner, G. Hong

An electromagnetic device is presented that allows direct measurements of articulator movements (tongue, jaw, lips and velum) under speech conditions. Compared to X-ray systems or ultrasound scanning this recording technique is non-invasive and affordable. We exploit the fact that the distances of miniature detector coils (on e.g. the tongue) from transmitter 3coils around the head of a speaker obey the dipolar 1/r -law for radiated intensity. Possible detector coil tilt is compensated for digitally.