5th International Conference on Spoken Language Processing
Experiments have been conducted using a variety of very low power EM sensors that measure articulator motions occurring in two frequency bands, 1 Hz to 20Hz, and 70 Hz to 7 kHz. They enable noise free estimates of a voiced excitation function, accurate pitch measurements, generalized transfer function descriptions, and detection of vocal articulator motions.
Bibliographic reference. Holzrichter, John F. / Burnett, Gregory C. / Gable, Todd J. / Ng, Lawrence C. (1998): "Micropower electro-magnetic sensors for speech characterization, recognition, verification, and other applications", In ICSLP-1998, paper 1064.