Sixth European Conference on Speech Communication and Technology
(EUROSPEECH'99)

Budapest, Hungary
September 5-9, 1999

Design of Hypercube Codebooks for the Acoustic-to-Articulatory Inversion Respecting the Non-Linearities of the Articulatory-to-Acoustic Mapping

Slim Ouni And Yves Laprie

LORIA - UMR 7503, Vandoeuvre-lès-Nancy, France

This paper presents a new method to generate a codebook that best represents the mapping between articulatory and acoustic domains. Existing codebook generation methods are relatively inefficient because of the non-linearities between the two domains. In our method the articulatory space is considered as composed of several hypercubes where the mapping is linear. The advantages of such a representation are the lower number of vectors which compose the codebook and the hierarchical organization of the codebook in a manner that respects the structure of the two domains.


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Bibliographic reference.  Laprie, Slim Ouni And Yves (1999): "Design of hypercube codebooks for the acoustic-to-articulatory inversion respecting the non-linearities of the articulatory-to-acoustic mapping", In EUROSPEECH'99, 141-144.