14th International Congress of Phonetic Sciences (ICPhS-14)

San Francisco, CA, USA
August 1-7, 1999

Analysis of Acoustic Invariance in the Place of Articulation of Stops by Means of the MDS

Josep Matas-Crespo, Eugenio Martínez-Celdrán, Alicia Ortega-Escandell

Laboratori de Fonètica, Universitat de Barcelona, Spain

Locus equations allow us to maintain that the regression slopes in the correlation of the start of the F2 and the middle of the same F2, which discriminate the places of articulation of stops perfectly, although it does not take into account the slope calculated for each token. MDS (“MultiDimensional Scaling”), provides a new perspective of acoustic invariance among the stops. This statistical technique offers a graphic representation of the objects in a geometric space. In this experiment, the values at the start and the middle of the F2 have been used to calculate the slope of each token. With these values a matrix of proximities among the different stops was obtained. By using this matrix, the MDS has been able to construct a space that gathers in a same zone the couples voiceless-voiced and separates in different fields the three places of articulation. The results have been discussed in terms of the progress that this technique represents compared to the locus equations approach.

Full Paper

Bibliographic reference.  Matas-Crespo, Josep / Martínez-Celdrán, Eugenio / Ortega-Escandell, Alicia (1999): "Analysis of acoustic invariance in the place of articulation of stops by means of the MDS", In ICPhS-14, 2129-2132.