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Marjan Cosyns1, Myriam Meulemans1, Ellen Vermeulen1

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The Mean Articulatory Rate (MAR) method is a valid approach for measuring speech articulation rate. However, MAR values are higher than the global method and require further standardization for clinical use.

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Area of Science:

  • Speech Science
  • Linguistics
  • Phonetics

Background:

  • Articulation rate is a key measure in speech analysis.
  • Existing methods for measuring articulation rate, like the global method, have limitations.
  • Mean Articulatory Rate (MAR) offers a novel approach to quantify speech fluency.

Purpose of the Study:

  • To examine the validity of the Mean Articulatory Rate (MAR) method.
  • To compare MAR measurements with the prevailing global method for articulation rate.

Main Methods:

  • Collected reading and spontaneous speech samples from 80 typically fluent adults (20-59 years).
  • Analyzed speech samples using both the global method and the MAR method after orthographic transcription.
  • Employed paired-samples t tests to compare measurements from both methods.

Main Results:

  • A strong correlation was observed between the global method and MAR for both spontaneous speech and reading.
  • Significant differences were found, with MAR values consistently higher than global method values for both speech tasks.

Conclusions:

  • The Mean Articulatory Rate (MAR) method is a valid tool for assessing articulation rate.
  • MAR and the global method are not interchangeable due to significant differences in values.
  • Further standardization is necessary before widespread clinical adoption of the MAR method.