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Adaptive Morse-coded single-switch communication system for the disabled

C H Luo1, C H Shih

  • 1Department of Electrical Engineering National Cheng-Kung University, Tainan, Taiwan, ROC. chluo@eembox.ncku.edu.tw

International Journal of Bio-Medical Computing
|April 1, 1996
PubMed
Summary
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This study introduces adaptive Morse-code recognition for individuals with disabilities, allowing for varying typing speeds. The Least-Mean Square (LMS) algorithm enables flexible single-switch communication, overcoming limitations of fixed-rate systems.

Area of Science:

  • Assistive Technology
  • Biomedical Engineering
  • Signal Processing

Background:

  • Traditional Morse-code recognition systems require a fixed typing rate, posing challenges for individuals with disabilities.
  • Difficulty in maintaining a stable typing rate limits effective communication for disabled users.

Purpose of the Study:

  • To develop an adaptive Morse-code recognition system capable of accommodating varying typing speeds.
  • To enhance single-switch communication for disabled individuals by providing greater flexibility in input rate.

Main Methods:

  • Implementation of an adaptive technique utilizing the Least-Mean Square (LMS) algorithm.
  • Development of a system to automatically recognize Morse-code signals at non-uniform speeds.

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Main Results:

  • The developed system successfully recognizes Morse-code input despite variations in typing speed.
  • Demonstrated the efficacy of the LMS algorithm in adapting to fluctuating input rates.

Conclusions:

  • The adaptive Morse-code recognition system offers a more inclusive and flexible communication solution for disabled users.
  • This technology expands communication possibilities for individuals facing motor control challenges.