10. A prompt-providing adaptive biofeedback speech tutor system according to claim 1, wherein the system has a sleep mode during which a static read only memory is in constant readiness for a password wake-up call, comprising, in addition, means to provide a simple overthreshold determination with respect to a voice wake-up call and turn on the toy in response to such overthreshold.
10. A prompt-providing adaptive biofeedback speech tutor system according to claim 1, wherein the system has a sleep mode during which a static read only memory is in constant readiness for a password wake-up call, comprising, in addition, means to provide a simple overthreshold determination with respect to a voice wake-up call and turn on the toy in response to such overthreshold. 11. A prompt-providing adaptive biofeedback speech tutor system according to claim 10, wherein the system in response to said wake-up call controls an initialization sequence to optimize frequency clustering as a result of analysis of the password of the wake-up call.