10th Annual Conference of the International Speech Communication Association

Brighton, United Kingdom
September 6-10, 2009

In Search of Non-Uniqueness in the Acoustic-to-Articulatory Mapping

G. Ananthakrishnan, D. Neiberg, Olov Engwall

KTH, Sweden

This paper explores the possibility and extent of non-uniqueness in the acoustic-to-articulatory inversion of speech, from a statistical point of view. It proposes a technique to estimate the non-uniqueness, based on finding peaks in the conditional probability function of the articulatory space. The paper corroborates the existence of non-uniqueness in a statistical sense, especially in stop consonants, nasals and fricatives. The relationship between the importance of the articulator position and non-uniqueness at each instance is also explored.

Full Paper

Bibliographic reference.  Ananthakrishnan, G. / Neiberg, D. / Engwall, Olov (2009): "In search of non-uniqueness in the acoustic-to-articulatory mapping", In INTERSPEECH-2009, 2799-2802.