Abstract
Three types of visual speech trainers, i. e. a 2-dimensional pitch-intensity indicator, an articulatory trainer of vowels and an intonation indicator, were systematically used for about a year and ten months in the training of fourteen(or five) hard of hearing children(aged 7 to12). The results of the trainings are summarized as follows: (1)In the trainings scheduled about 10 times(ten minutes per once) by use of the 2-dimensional pitch-intensity indicator, the children mastered control of the larynx relying on the somatic feedback. (2)By conducting the pitch control and articulatory trainings in parallel, children uttered at an unstable pitch temporarily. However, continuation of the trainings for about another 10 times, resulted in the children being able to utter sustained vowels in the correct articulation and at the pertinent pitch. (3)Training of intonation is useful for correcting intonation, but not effective so much for correcting the rhythms. These results can also be verified by listening to the utterances of the children concerned.
