A Semiautomated Protocol Towards Quantifying Vocal Effort in Relation to Vocal Performance During a Vocal Loading...

Area of Science:

• Speech and Hearing Sciences
• Occupational Health
• Biomedical Engineering

Background:

• Vocal loading studies lack standardized methodologies, hindering reliability and comparability.
• Consistent definitions for vocal fatigue, vocal effort, and vocal demand are needed.
• Existing methods for vocal fatigue assessment present challenges in repeatability and data collection.

Purpose of the Study:

• To propose and validate a standardized protocol for vocal loading experiments.
• To investigate the sensitivity of vocal effort and vocal demand response to varying vocal demands.
• To enhance the efficiency and consistency of vocal fatigue research.

Main Methods:

• Development of a semi-automated vocal loading task.
• Establishment of consistent definitions for vocal fatigue-related terms.
• Experimental manipulation of vocal demands (noise only, noise plus duration).

Main Results:

• The proposed protocol successfully induced measurable changes in vocal effort and vocal demand response.
• Results indicate that the protocol consistently elicits indicators of vocal fatigue.
• The standardized approach demonstrated increased efficiency in sample collection and preparation.

Conclusions:

• A standardized methodology is crucial for improving the reliability and comparability of vocal loading studies.
• The proposed protocol offers a more consistent approach to quantifying vocal fatigue.
• Adoption of this methodology will enhance interstudy comparability and the validity of research findings.