In any case, the trainee's own effort is the premise of the progress.
1. People who have difficulty voicing a basic sound
* People who received special operations, yet are willing for the training
* The elder who are lacking in aspiration, or people of weak will
* People who are slow in their movement or physically weak
Few people in those categories have ever succeeded in producing the basic sound in the first class.
Among them, I would like to talk about the case for people who are willing, but due to special operation and the long-term hospitalization, their senses have been dulled and they feel it difficult to get the knack of vocalization.
