Research Interests

DeLiang Wang's general area of interest is machine perception. More specifically, he is interested in biologically plausible neural computation for auditory and visual information processing. To achieve this, his research program seeks to uncover computational principles for auditory and visual analysis, including segmentation, recognition and generation. This research is on the basis of psychological/neurobiological data from human and animal perception and computational considerations.

A fundamental aspect of perception is its ability to group elements of a perceived scene or sensory field into coherent clusters (objects), generally known as scene analysis and segmentation. The general problem of scene analysis remains unsolved in auditory processing and computer vision. For a number of years, Wang's group focuses on understanding the dynamics of large networks of coupled neural oscillators and their applications to scene analysis (see Wang, 2005, for a view/review on this research effort). The results of this study have yielded a novel and effective approach for solving the problem of auditory and visual scene segmentation.

His recent work focuses on developing models and algorithms for auditory scene analysis. In order to achieve the ultimate goal of constructing a computational system that possesses the human ability of cocktail-party processing, one must understand individual analyses, such as pitch, location, amplitude and frequency modulation, onset/offset, rhythm, and so on. One must also incorporate top-down aspects, including attention and recognition. His lab investigates a variety of topics under the general theme of computational audition.

See the PNL website for the current activity in the laboratory.