Interspeech'2005 - Eurospeech

Lisbon, Portugal
September 4-8, 2005

On the Nature of Acoustic Information in Identification of Coarticulated Vowels

Sorin Dusan

Rutgers University, USA

Perceptual studies involving modified syllables showed that the information necessary to identify coarticulated vowels is distributed throughout the duration of the vowels and the adjacent transitions from and to consonants. Different hypotheses were formulated to explain the nature of this dynamic spectral information. This paper presents an analysis of average spectral trajectories of nine vowels in three left and three right consonant contexts in American English. The results of this analysis are discussed in connection with previously proposed hypotheses. These results, connected together, suggest a more comprehensive explanation of the nature of the acoustic (spectral, dynamic, temporal) information in the identification of coarticulated vowels. This explanation also appears to hold true for other classes of coarticulated sounds, in addition to vowels.

Full Paper

Bibliographic reference.  Dusan, Sorin (2005): "On the nature of acoustic information in identification of coarticulated vowels", In INTERSPEECH-2005, 2449-2452.