Very low power electromagnetic (EM) wave sensors are being used to measure speech articulator motions such as the vocal fold oscillations, jaw, tongue, and the soft palate. Data on vocal fold motions, that correlate well with established laboratory techniques, as well as data on the jaw, tongue and soft palate are shown The vocal fold measurements together with a Volume air flow model are being used to perform pitch synchronous estimates of the voiced transfer functions using ARMA techniques.