A multi-channel adaptive nonlinear filtering structure realizing some properties of the hearing system.
An adaptive nonlinear signal-filtering model of the cochlea is proposed based on the functional properties of the inner ear. The model consists of the cochlear filtering segments taking into account the longitudinal, transverse and radial pressure wave propagation. On the basis of an analytical description of different parts of the model and the results of computer modeling, the biological significance of the nonlinearity of signal transduction processes in the outer hair cells, their role in signal compression and adaptation, the efferent control over the characteristics of the filtering structures (frequency selectivity and sensitivity) are explained.
Stasiunas
Antanas
A
Department of Applied Electronics, Kaunas University of Technology, LT-3031, Kaunas, Lithuania.
Verikas
Antanas
A
Kemesis
Povilas
P
Bacauskiene
Marija
M
Miliauskas
Rimvydas
R
Stasiuniene
Natalija
N
Malmqvist
Kerstin
K
D003051:Cochlea / Q000502:physiology*; D003198:Computer Simulation; D006199:Hair Cells, Auditory, Inner / Q000502:physiology; D006309:Hearing / Q000502:physiology*; D006801:Humans; D008954:Models, Biological; D010498:Perilymph / Q000502:physiology; D012815:Signal Processing, Computer-Assisted; D014722:Vestibule, Labyrinth / Q000502:physiology