First European Conference on Speech Communication and Technology

Paris, France
September 27-29, 1989

A Theoretical Study of Neural Mechanisms Specialized in the Detection of Articulatory-Acoustic Events

Zong Liang Wu, Jean Luc Schwartz, Pierre Escudier

Institut de la Communication Parlee, INPG - ENSERG - Université Stendhal, Grenoble, France

A model for possible neural mechanisms specialized in the detection of articulatory- acoustic events is described. The model comprises two types of channels respectively specialized for onset and offset events. All channels are organized in parallel, and further process the spatio-temporal discharge pattern of the auditory nerve fibers which is simulated by a model incorporating the cochlear filtering in general and neural adaptation in particular. Channels for onset events are composed of "ON" mechanisms followed by large scale spatial integration, while channels for offset events are characterized by differentiation coding and temporal integration. These channels are very powerful in the detection of the concerned events. They are also used as a tool to explain some related psycho- acoustic phenomena.

Full Paper

Bibliographic reference.  Wu, Zong Liang / Schwartz, Jean Luc / Escudier, Pierre (1989): "A theoretical study of neural mechanisms specialized in the detection of articulatory-acoustic events", In EUROSPEECH-1989, 1235-1238.