Teaching vowel articulation with the computer vowel trainer. Methodology and results

Area of Science:

• Speech-language pathology
• Assistive technology
• Pediatric audiology

Background:

• Profoundly deaf children face significant challenges in speech articulation.
• Conventional speech training methods have limitations in providing visual feedback.
• The Computer Vowel Trainer (CVT) offers a novel approach to speech therapy.

Purpose of the Study:

• To assess the effectiveness of the Computer Vowel Trainer (CVT) in improving speech articulation for profoundly deaf children.
• To compare the CVT's efficacy against traditional speech training methods.
• To investigate the influence of age on learning outcomes with the CVT.

Main Methods:

• A three-year longitudinal study involving 14 profoundly deaf children.
• Utilized linear prediction to estimate and display vocal tract shapes via the CVT.
• Employed an experimental group using the CVT and a matched control group using conventional methods.

Main Results:

• Children using the CVT demonstrated significantly higher articulation scores compared to the control group.
• A strong positive correlation was observed between younger age and improved vowel learning, retention, and generalization.
• The CVT provided effective visual feedback for vocal tract shaping during speech production.

Conclusions:

• The Computer Vowel Trainer (CVT) is a superior method for enhancing speech articulation in profoundly deaf children.
• Early intervention with the CVT yields the greatest benefits for speech development.
• Visual biofeedback technology holds significant promise for speech rehabilitation in pediatric populations.