An Acoustic Analysis Of Cannabis-Intoxicated Speech

Auteurs-es

  • Arian Shamei University of British Columbia
  • Sonya Bird University of Victoria

Résumé

Speech from medicinal users of cannabis was compared before and after the consumption of cannabis to determine whether cannabis-intoxication produces salient acoustic correlates within the speech stream. Eight participants completed a variety of elicitation tasks (reading, interviews, storyboards, sustained vowel phonation) before and after the consumption of cannabis. Measurements of voice-onset time (VOT), prosodic trajectory, and acoustic quality (jitter / shimmer) suggest that cannabis-intoxication results in a distinct acoustic profile. Intoxicated speech was characterized by significant and substantial increases to the variability of VOT, altered prosodic expression (reduced range and flatter trajectories), and decreased shimmer. These findings have implications for the utility of automatic detection methods in distinguishing cannabis-intoxication from the speech stream, which may be useful for medical or legal purposes. Furthermore, these findings may provide insight into the psychological and physiological effects of cannabis intoxication.

Bibliographies de l'auteur-e

Arian Shamei, University of British Columbia

PhD Student - Linguistics: Cognitive Systems

Sonya Bird, University of Victoria

Department of Linguistics - Associate Professor

Fichiers supplémentaires

Publié-e

2019-10-16

Comment citer

1.
Shamei A, Bird S. An Acoustic Analysis Of Cannabis-Intoxicated Speech. Canadian Acoustics [Internet]. 16 oct. 2019 [cité 21 mai 2024];47(3):108-9. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/3343

Numéro

Vol. 47 No. 3 (2019)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

Licence

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