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A study of voice conservation techniques applicable for deaf and hard of hearing adults
Speech is normally controlled by the ear. Since it is natural for the ear to be the channel through which one learns to talk, a serious impairment in hearing will hinder an individual�s normal development of speech. Two factors are responsible. First the heating loss reduces sharply the number of listening experiences that the child has and thus slows up the process of learning to talk. Second, losses of certain types make it impossible for the child to distinguish some of the elements in speech. No child will learn to pronounce distinctions he does not hear, unless, of course, he has special guidance.