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Microprocessor-based speech processing system.

B J Guillemin, D T Nguyen

    Journal of Speech and Hearing Research
    |June 1, 1984
    PubMed
    Summary
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    This study introduces a low-cost, portable system for precise speech sound analysis using waveform techniques. It overcomes spectrogram limitations for accurate durational measurements like voice onset time (VOT).

    Area of Science:

    • Acoustic Phonetics
    • Speech Science
    • Signal Processing

    Background:

    • Spectrographic analysis of speech sounds has limited resolution (approx. 5 ms) for precise durational measurements.
    • Accurate measurement of speech parameters like voice onset time (VOT) is crucial for linguistic and clinical research.
    • Existing methods for analyzing speech acoustics can be costly and lack portability.

    Purpose of the Study:

    • To develop a cost-effective, portable system for high-resolution speech signal analysis.
    • To utilize waveform analysis for improved accuracy in measuring speech sound durations.
    • To demonstrate the system's utility in phonetic measurements.

    Main Methods:

    • A microprocessor-based system was developed for speech acquisition and processing.

    Related Experiment Videos

  • Waveform analysis techniques were employed to extract acoustic measurements.
  • Noninvasive, real-time data capturing was utilized.

    • Main Results:

    • The system provides higher resolution measurements compared to spectrograms.
    • Accurate voice onset time (VOT) measurements were achieved for CV clusters.
    • Fundamental frequency (F0) measurements were successfully performed.

    Conclusions:

    • The developed system offers a practical and accurate solution for speech sound durational analysis.
    • Waveform analysis provides superior resolution for specific phonetic measurements.
    • The system's portability and low cost enhance accessibility for researchers.