Theoretical and Experimental Studies of Auditory Processing
Abstract
Over the last year, work has progressed in the three basic areas that are emphasized in this proposal: (1) Peripheral auditory implementations; (2) Auditory cortical processing; (3) Theoretical analysis of neural network architectures. In the first topic, we have completed a detailed analysis and implementation of the early auditory model originally formulated in the previous grant period. Specifically, we have determined the underlying mechanisms that give rise to noise robustness and self-normalization in the early auditory spectra. A patented VLSI implementation of the model has been accomplished. In the second area of research, we have completed a survey of response properties in the anterior auditory field, especially with regard to the cells' responses to FM and single tone stimuli. Finally, in the third focus area, we have developed new recursive algorithms (mimicing recursive neural network architectures) for building systematically, approximate basis function representations. The new algorithms known as orthogonal matching pursuit algorithms are applicable to a wide class of problems, ranging from fitting radial basis function approximations to wavelet-bases models for transfer functions of linear systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 30, 1994
- Accession Number
- ADA278505
Entities
People
- P.S.Krishnaprasad
- Shihab A Shamma
Organizations
- University of Maryland