title: An adaptive panoramic filter bank as a qualitative model of the filtering system of the cochlea: the peculiarities in linear and nonlinear mode.
abstract: Outer hair cells in the cochlea of the ear, together with the local structures of the basilar membrane, reticular lamina and tectorial membrane constitute the adaptive primary filters (PF) of the second order. We used them for designing a serial-parallel signal filtering system. We determined a rational number of the PF included in Gaussian channels of the system, summation weights of the output signals, and distribution of the PF along the basilar membrane. A Gaussian panoramic filter bank each channel of which consists of five PF is presented as an example. The properties of the PF, the channel and the filter bank operating in the linear and nonlinear modes are determined during adaptation and under efferent control. The results suggest that application of biological filtering principles can be useful for designing cochlear implants with new speech encoding strategies.
authors.affiliation: Department of Electrical & Control Equipment, Kaunas University of Technology, LT-51368, Kaunas, Lithuania.
authors.forename: Antanas
authors.initials: A
authors.lastname: Stasiunas
authors.forename: Antanas
authors.initials: A
authors.lastname: Verikas
authors.forename: Marija
authors.initials: M
authors.lastname: Bacauskiene
authors.forename: Rimvydas
authors.initials: R
authors.lastname: Miliauskas
mesh_terms: D003054:Cochlear Implants; D003198:Computer Simulation; D004867:Equipment Design; D018072:Hair Cells, Auditory, Outer / Q000502:physiology*; D016014:Linear Models; D017711:Nonlinear Dynamics; D016011:Normal Distribution; D012815:Signal Processing, Computer-Assisted