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Speech recognition for the disabled.

K V Grattan1, A W Palmer, C A Shurrock

  • 1Dept. of Electr., Electron. and Inf. Eng., City Univ., London.

IEEE Engineering in Medicine and Biology Magazine : the Quarterly Magazine of the Engineering in Medicine & Biology Society
|January 1, 1991
PubMed
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This study presents an affordable automatic speech recognition (ASR) system for disabled individuals, enabling telephone communication. The system successfully recognized a limited vocabulary of numbers and commands for enhanced accessibility.

Area of Science:

  • Engineering
  • Computer Science
  • Assistive Technology

Background:

  • Traditional telephone systems present accessibility challenges for individuals with disabilities.
  • Developing cost-effective and user-friendly assistive communication devices is crucial.

Purpose of the Study:

  • To present a simple, inexpensive, and modular automatic speech recognition (ASR) system for telephone communication tailored for disabled users.
  • To detail the hardware components and user considerations for the ASR system.
  • To evaluate the recognition success of the ASR system with a limited vocabulary.

Main Methods:

  • The ASR system comprises a TCM29C18 codec, SRS-1 speech recognizer, LED display, and a dual-tone multifrequency generator.
  • A semiqualitative assessment was conducted to evaluate recognition success.

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  • Testing progressed from stand-alone components to the fully integrated system interfaced with a telephone line.

    • Main Results:

    • The SRS-1 and codec demonstrated recognition capabilities as a stand-alone system.
    • Integration with the tone generator showed successful recognition of numbers and commands.
    • The complete ASR system, when interfaced with the telephone line, yielded positive results.

    Conclusions:

    • The developed ASR system offers a viable and affordable solution for telephone communication for disabled individuals.
    • The modular design allows for potential future enhancements and wider applications.
    • Further research is recommended to expand vocabulary and improve recognition accuracy.