NCT04858022

Visual Acoustic Biofeedback for RSE Via Telepractice

Online Assessment and Enhancement of Auditory Perception for Speech Sound Errors: Visual Acoustic Biofeedback for RSE Via Telepractice

• Status: Completed
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 40 (actual)
• Sponsor: Montclair State University · Academic / Other
• Sex: All
• Age: 9 Years – 15 Years
• Healthy volunteers: Accepted

Summary

This research will meet a public health need by evaluating the efficacy of speech intervention supplemented with real-time visual-acoustic biofeedback when delivered using remote technologies.

Detailed description

In a crossover design, participants will be randomly assigned to receive 10 weeks/20 sessions of visual-acoustic biofeedback treatment via telepractice followed by a 10-week period of no treatment, or the same two conditions in the reverse order. Production accuracy will be assessed with standard probes (20 syllables, 30 words, and 10 sentences containing /r/ in various phonetic contexts) administered prior to the beginning of treatment (baseline), after the first 10-week phase, and again at the end of the study.

Conditions

• Speech Sound Disorder

Interventions

Type	Name	Description
BEHAVIORAL	Visual-Acoustic Biofeedback Treatment	In visual-acoustic biofeedback treatment, the elements of traditional articulatory treatment (i.e., auditory models and verbal descriptions of articulator placement) are enhanced with a dynamic display of the speech signal in the form of the real-time LPC (Linear Predictive Coding) spectrum. Because correct vs incorrect productions of /r/ contrast acoustically in the frequency of the third formant (F3), participants will be cued to make their real-time LPC spectrum match a visual target characterized by a low F3 frequency. They will be encouraged to attend to the visual display while adjusting the placement of their articulators and observing how those adjustments impact F3.
OTHER	No Treatment	10-week period of no treatment

Timeline

• Start date: 2022-01-15
• Primary completion: 2024-04-15
• Completion: 2024-04-15
• First posted: 2021-04-23
• Last updated: 2026-02-17
• Results posted: 2026-02-17

Locations

1 site across 1 country: United States