1. An object tracker system, comprising: an audio model that models an original audio signal of an object, a time delay between at least two audio input signals and a variability component of the original audio signal, the audio model employing a probabilistic generative model; a video model that models a location of the object, an original image of the object and a variability component of the original image, the video model employing a probabilistic generative model, the video model receiving a video input; and, an audio video tracker that models the location of the object based, at least in part, upon the audio model and the video model, the audio video tracker providing an output associated with the location of the object.