Acoustic pattern recognition of fricative-vowel coarticulation by the self-organizing map.
Word-initial samples of fricative [s] preceding vowels [a:], [ae:], [e:], [i:], [u:], [o:], and [y:] in Finnish words were studied with the self-organizing map. An acoustic map was first calculated from speech samples of women without speech disorders, and then the [s] samples were measured on this map. In all 10 subjects the [s] samples preceding the rounded vowels [u:] and [o:] clearly differed from the samples in front of unrounded [a:], [ae:], [e:], and [i:]. The coarticulatory phenomena observed on the map were due to changes in the composition and stability of the fricative spectrum.
Leinonen
L
L
Department of Physiology, University of Helsinki, Finland.
Mujunen
R
R
Kangas
J
J
Torkkola
K
K
D000328:Adult; D005260:Female; D005583:Fourier Analysis; D006801:Humans; D008875:Middle Aged; D010700:Phonetics; D012016:Reference Values; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013018:Sound Spectrography / Q000295:instrumentation*; D013061:Speech Acoustics