Acoustic energy, real-time spectrum analyzer

Adaptive biofeedback speech tutor toy

Aid for curing or mitigating stammering

Aid for speech therapy and a method of making same

Audio frequency converter for audio-phonatory training

Audio frequency converter for audio-phonatory training

Audio-frequency converter apparatus, for treating subjects suffe

Audio-frequency converter apparatus, installation including said

Children's speech training aid

Computerized system for teaching speech

Computerized system for teaching speech

Demonstrative puppet for phonetic training of persons having spe

Electronic device and method for the treatment of stuttering

Foreign language learning apparatus

Hollow tubular device to assist patients during speech therapy

Implement for speech therapy

Language analysis instrument

Language teaching method and apparatus

Learning doll

Method and apparatus for reporting progress of a subject...