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Indexing head movement during speech production using optical markers.

Kevin D Roon1, Katherine M Dawson1, Mark K Tiede1

  • 1Haskins Laboratories, 300 George Street, New Haven, Connecticut 06511, USA kroon@gc.cuny.edu, kdawson2@gradcenter.cuny.edu, tiede@haskins.yale.edu, dwhalen@gc.cuny.edu.

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Summary

Optical marker tracking and electromagnetic articulometry accurately track head position during speech. Using at least four skin-affixed markers is recommended for reliable head movement assessment.

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Area of Science:

  • Speech Science
  • Biomechanics
  • Motion Analysis

Background:

  • Accurate head position tracking is crucial for speech production analysis.
  • Existing methods for monitoring head movement during speech have limitations.

Purpose of the Study:

  • To compare the accuracy of optical marker tracking and electromagnetic articulometry for indexing head position during speech.
  • To evaluate the effectiveness of skin-affixed markers versus a head-mounted apparatus for head movement assessment.

Main Methods:

  • Integrated optical marker tracking and electromagnetic articulometry were employed.
  • Movement of skin-affixed markers on the forehead and points on a head-mounted apparatus were measured.
  • Measurements were relative to a fixed point above the upper incisors.

Main Results:

  • Both optical marker tracking and electromagnetic articulometry provided satisfactory head position indexing.
  • A minimum of four skin-affixed markers is recommended for optimal results.
  • Optimal marker placement locations were identified.

Conclusions:

  • Optical marker tracking and electromagnetic articulometry are viable methods for assessing head position during speech.
  • Skin-affixed markers offer a reliable approach when optimally placed.
  • Further research can refine marker placement strategies for enhanced speech analysis.