International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 1999)

Florence, Italy
September 1-3, 1999

APEX - An Articulatory Model for Speech and Singing

Christine Ericsdotter (1), Johan Sundberg (2), Björn Lindblom (1), Johan Stark (1)

(1) Department of Linguistics, Stockholm University, Stockholm, Sweden
(2) KTH Voice Research Centre, Department of Speech, Music and Hearing, KTH (Royal Institute of Technology), Stockholm, Sweden

The APEX articulatory synthesis model is being developed as a joint project at the Department of Speech, Music and Hearing at the Royal Institute of Technology and at the Department of Linguistics at Stockholm University. It is a direct development of an earlier vowel model [1], implemented as a computer program under Windows [2]. It calculates formants and produces sound according to articulatory profiles from a virtual vocal tract, it generates possible articulatory configurations within a specified articulatory space and it also parameterizes and animates series of articulatory configurations. The default vocal tract is based on lateral X-ray data from a male adult speaker complemented with frontal and mid-sagittal measures from a standard vocal tract. However, the model can be calibrated with and run on vocal tract data from any individual. The APEX model is used for testing and shedding light on theories of speech and singing production, in general as well as for specific speakers or singers. It is primarily a research instrument, continually developed according to new findings and the needs of its users.

Full Paper

Bibliographic reference.  Ericsdotter, Christine / Sundberg, Johan / Lindblom, Björn / Stark, Johan (1999): "APEX - an articulatory model for speech and singing", In MAVEBA-1999, 78-82.