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A set of newly patented concepts has been developed into a system of speech training aids which can provide help for speech disordered, deaf, and hard-of-hearing patients. In the clinic, an attache case of electronics and an oscilloscope provide two forms of visual presentation which have exhibited strong bio-feedback properties to reinforce good speech production. An audio equivalent is provided for hard-of-hearing patients to wear as a hearing aid. A visual equivalent is practical for the deaf to wear both in and out of the clinic. The cost of pre-production units is a few thousand dollars.