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In-Ear System for Monitoring Lower Jaw Motion: A Novel Approach to Speech Intention Detection in Laryngectomy
IEEE Transactions on Bio-Medical Engineering
|March 3, 2025
Summary
A new in-ear device uses outer ear canal deformation from jaw motion to detect speech intention. This offers a discreet, hands-free solution for laryngectomy patients needing artificial voice restoration.
Area of Science:
- Biomedical Engineering
- Speech Rehabilitation
- Wearable Technology
Background:
- Restoring speech after laryngectomy is challenging, with current artificial voice systems lacking hands-free practicality.
- Existing solutions often require manual operation, limiting social acceptability and autonomy for patients.
Purpose of the Study:
- To explore outer ear canal deformation as a novel biomarker for speech intention detection.
- To develop an intuitive, hands-free in-ear device for controlling artificial voice systems.
Main Methods:
- A prototype in-ear device with infrared proximity sensors was developed to monitor ear canal volume changes.
- The device captured jaw motions, integrated movements, and speech patterns.
- Validation was performed against surface electromyography and audio recordings.
Main Results:
- The device accurately detected fundamental jaw motions, integrated movements (chewing, coughing), and speech patterns.
- Accuracy in detecting activity onset and termination was confirmed.
- The system demonstrated signal reproducibility across trials, indicating reliability.
Conclusions:
- Outer ear canal deformation is a feasible biomarker for detecting speech intention.
- This non-invasive, discreet device offers a socially acceptable solution for laryngectomy patients.
- The technology has the potential to significantly improve quality of life and autonomy.
