Fifth International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2007)
We performed an international trial with a
newly developed multidimensional assessment
protocol for substitution voices based on the
European Laryngological Society protocol for
common dysphonia. However, as sound production
in SV is largely irregular, we needed some
adaptations, in particular of the dimensions
perception, acoustic analysis and visual evaluation.
The protocol consisted of clinical information, the
IINFVo perceptual rating scale, visual examination
(level and quality of vibration), acoustic registration
of vowels, vcv, cvcvcv and text (which was later
analysed with the Auditory Model Based Pitch
Extractor (AMPEX)), aerodynamic measurements
(Vital Capacity, Maximum Phonation Time, and
Maximal Intensity), and self-evaluation (of i) voice
quality and ii) degree of invalidity).
Six centers participated. We retained 96 suitable files
(out of 102). Variance analysis demonstrates
significance for i) all perceptual parameters (except
for Voicing), MPT and Maximal Intensity and ii) type
of surgery and/or main anatomical vibration source.
There is no correlation at all between the patients
perception of his /her disability and perceptual
parameters, MPT, quality of vibration. Correlation
between the acoustical analysis and the subjective
rating was only moderate (Pearson < 0.62; standard
deviation > 1.8).
Index Terms. substitution voices, multidimensional protocol, acoustics, perception, dysphonia
Full Paper (reprinted with permission from Firenze University Press)
Bibliographic reference. Moerman, M. B. J. / Martens, J. P. / Chevalier, D. / Friedrich, G. / Hess, M. / Lawson, G. / Licht, A. K. / Ogut, F. / Reckenzaun, E. / Remacle, M. / Woisard, V. / Dejonckere, Philippe H. (2007): "Towards a basic protocol for functional assessment of substitution voices: preliminary results of an international trial", In MAVEBA-2007, 201-204.