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Related Experiment Videos

Vocal quality factors: analysis, synthesis, and perception.

D G Childers1, C K Lee

  • 1Department of Electrical Engineering, University of Florida, Gainesville 32611-2024.

The Journal of the Acoustical Society of America
|November 1, 1991
PubMed
Summary

This study identifies key glottal excitation factors influencing vocal quality across different voice types. These findings enable more natural speech synthesis and improved voice disorder modeling.

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Area of Science:

  • Phonetics
  • Speech Science
  • Bioacoustics

Background:

  • Vocal quality is influenced by vocal fold vibratory patterns.
  • Understanding these patterns is crucial for speech synthesis and analysis.
  • Existing models may not fully capture physiological aspects of vocal fold motion.

Purpose of the Study:

  • To examine factors of vocal quality affected by vocal fold vibratory patterns.
  • To develop and test a new voice source model for speech synthesis.
  • To evaluate the perceptual impact of voice source parameters.

Main Methods:

  • Analysis of modal, vocal fry, falsetto, and breathy voice types.
  • Extraction of source-related features from speech and electroglottographic (EGG) signals.
  • Development and testing of a new physiological voice source model with perceptual evaluations.

Main Results:

  • Identified four key factors: glottal pulse width, skewness, closure abruptness, and turbulent noise.
  • Developed a novel voice source model incorporating physiological aspects.
  • Perceptual tests confirmed the auditory effects of spectral slope, pulse shape, and noise characteristics.

Conclusions:

  • The identified glottal factors are significant for characterizing voice types.
  • The new voice source model enhances naturalness in synthesized speech.
  • Results have applications in speech synthesis, vocal disorder modeling, and speech recognition.

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