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Aids for speech-handicapped

G Fant, K Galyas, P Branderud

Scandinavian Journal of Rehabilitation Medicine

|January 1, 1976

Summary

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This study introduces an improved electrolarynx with hand-controlled frequency for natural speech intonation. A new voice amplifier also enhances weak voices and electrolarynx output, showing promising results in initial trials.

Area of Science:

Engineering
Speech Pathology
Assistive Technology

Background:

Conventional speech aids often produce monotonous vocalizations.
Laryngectomized individuals face challenges in natural voice production.
Existing assistive devices may have limitations in sound output and clarity.

Purpose of the Study:

To develop an improved electrolarynx with enhanced user control over vocal intonation.
To create a voice amplifier to augment weak speech and improve signal quality.
To explore the application of synthetic speech for patients with anarthria.

Main Methods:

Design and implementation of an electrolarynx with hand-controlled fundamental frequency adjustment.
Development of a voice amplifier with features to minimize acoustic feedback.

Related Experiment Videos

Conducting training experiments with both normal and laryngectomized subjects.

Main Results:

The improved electrolarynx allows users to approximate natural intonation patterns, reducing speech monotony.
The voice amplifier effectively compensates for weak voices, including esophageal speech.
Experiments yielded promising results, indicating improved speech quality and user experience.

Conclusions:

The developed electrolarynx and voice amplifier represent significant advancements in speech assistive technology.
These devices offer improved vocal naturalness and sound quality for individuals with speech impairments.
Further research into synthetic speech applications holds potential for anarthric patients.