12. The method according to claim 10 further comprising displaying a representation of the assistive speech-related feedback data, wherein the representation is one or both of vibrotactile biofeedback and an interactive game.
12. The method according to claim 10 further comprising displaying a representation of the assistive speech-related feedback data, wherein the representation is one or both of vibrotactile biofeedback and an interactive game. 16. The method according to claim 12 , wherein the assisitaive speech-related feedback data is generated according to the steps of showing the raw magnetic sensor outputs; generating a fused combination of at least one sensor output comprising output from at least one magnetic and acoustic sensor; calculating a vector sum representation of the magnetic sensor outputs; producing a change of color based on the pitch or amplitude of the speech volume based on output from the acoustic sensors; and showing the tongue trajectory in at least one of 1D, 2D, or 3D, an interactive game, and a goal-oriented game.