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Related Experiment Videos

Measuring vocal quality with speech synthesis.

B R Gerratt1, J Kreiman

  • 1Division of Head and Neck Surgery, UCLA School of Medicine, Los Angeles, California 90095-1794, USA. bgerratt@ucla.edu

The Journal of the Acoustical Society of America
|January 5, 2002
PubMed
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Listeners can reliably agree on voice quality perception. A new listener-mediated analysis-synthesis method improves agreement compared to traditional rating scales for pathological voices.

Area of Science:

  • Speech and Hearing Science
  • Acoustic Phonetics
  • Perceptual Acoustics

Background:

  • Traditional rating scales show poor listener agreement for pathological voice quality.
  • This disagreement may stem from unstable internal perceptual standards.
  • An alternative method is needed to reliably assess voice perception.

Purpose of the Study:

  • To investigate if listener-mediated analysis-synthesis improves agreement in assessing pathological voice quality.
  • To compare the reliability of analysis-synthesis with traditional rating scales.
  • To determine if listeners can reliably perceive and agree on voice quality differences.

Main Methods:

  • Developed a listener-mediated analysis-synthesis method where listeners match synthetic to natural pathological voices.

Related Experiment Videos

  • Listeners adjusted signal-to-noise ratio for synthetic voices to match natural targets.
  • Compared listener agreement in analysis-synthesis to traditional visual-analog rating scales for noisiness.

    • Main Results:

    • Significantly greater listener agreement was observed for the analysis-synthesis task compared to rating scales for 9 out of 12 voices.
    • For the remaining three voices, differences in synthesis settings were perceptually insignificant.
    • Listener-mediated analysis-synthesis demonstrated reliable perceptual assessment of voice quality.

    Conclusions:

    • Listeners can achieve reliable agreement in perceptual assessments of voice quality.
    • Listener-mediated analysis-synthesis offers a more reliable method for measuring voice perception than traditional scales.
    • This method overcomes limitations of subjective internal standards in voice quality evaluation.