Quantifying vocal effort from the shape of the one-third octave long-term-average spectrum of speech

Vocal effort is a major source of variability in speech processing. The present study examines its spectral effects from calibrated data recorded in 1977. The 97 talkers were instructed to vary their vocal effort in five degrees. Each sequence was represented by its sound level and its 1/3 octave lo...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2019-10, Vol.146 (4), p.EL369-EL375
Main Author: Liénard, Jean-Sylvain
Format: Article
Language:English
Subjects:
Acoustics
Computer Science
Engineering Sciences
Humanities and Social Sciences
Linguistics
Signal and Image Processing
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Summary:Vocal effort is a major source of variability in speech processing. The present study examines its spectral effects from calibrated data recorded in 1977. The 97 talkers were instructed to vary their vocal effort in five degrees. Each sequence was represented by its sound level and its 1/3 octave long-term-average spectrum. After normalization to a common arbitrary level, comparing each spectrum to the others demonstrated that the original sound level could be recovered within a 5 dB error margin. A principal component analysis brought out several spectral features involved in the quantitative relationship between spectral shape and sound level.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.5129677