The FACTS model of speech motor control: Fusing state estimation and task-based control.

ABSTRACT: We present a new computational model of speech motor control: the Feedback-Aware Control of Tasks in Speech or FACTS model. FACTS employs a hierarchical state feedback control architecture to control simulated vocal tract and produce intelligible speech. The model includes higher-level control of speech tasks and lower-level control of speech articulators. The task controller is modeled as a dynamical system governing the creation of desired constrictions in the vocal tract, after Task Dynamics. Both the task and articulatory controllers rely on an internal estimate of the current state of the vocal tract to generate motor commands. This estimate is derived, based on efference copy of applied controls, from a forward model that predicts both the next vocal tract state as well as expected a

SUBMITTER: Parrell B 

PROVIDER: S-EPMC6743785 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature