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Detecting nasalization using a low-cost miniature accelerometer

R P Lippmann

    Journal of Speech and Hearing Research
    |September 1, 1981
    PubMed
    Summary

    A low-cost nasal accelerometer effectively measures nasalization, similar to expensive devices. Optimal placement is on the lateral nasal cartilage for accurate vibratory analysis below 2,000 Hz.

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    Area of Science:

    • Biomedical Engineering
    • Speech-Language Pathology

    Background:

    • Nasalization assessment is crucial for diagnosing speech disorders.
    • Previous methods for nasalization monitoring often involve expensive or complex equipment.

    Purpose of the Study:

    • To evaluate the efficacy of a low-cost miniature accelerometer for nasalization detection.
    • To determine the optimal placement for nasal accelerometer use.

    Main Methods:

    • A low-cost miniature accelerometer was externally attached to the nose.
    • The accelerometer's performance was compared to more expensive devices.
    • Vibratory energy analysis was conducted, focusing on frequencies below 2,000 Hz.
    • Optimal placement was identified over the lateral nasal cartilage.

    Main Results:

    • The low-cost accelerometer demonstrated effectiveness comparable to high-cost devices in indicating nasalization.
    • The limited bandwidth of the low-cost accelerometer was sufficient for capturing relevant nasal vibratory energy.
    • The lateral nasal cartilage was identified as the optimal placement site.

    Conclusions:

    • A low-cost miniature accelerometer offers a viable and cost-effective solution for nasalization monitoring.
    • Accurate nasalization assessment can be achieved with simple, externally placed sensors.
    • Further research can explore applications in clinical settings and speech therapy.

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