Abstract
The conventional computer keyboard is unable to provide a useable communication device for physically disabled persons with such disabilities as muscle atrophy, cerebral palsy, and severe handicap. In this paper, the Morse code is selected as a communication adaptive device for entering Mandarin phonetic symbols into a computer. Although a stable typing rate is strictly required for an accurate recognition of Mandarin phonetic Morse code, maintaining this rate is a challenge for the disabled. Therefore, a suitable adaptive automatic recognition method is needed. Four processes are involved in this adaptive Mandarin phonetic Morse code recognition method: space recognition, tone recognition, adaptive processing, and character recognition. Experimental results revealed that the recognition rate generated by the proposed method elicited as high as a 90% improvement over alternative methods from the literature.
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