Loading patent…
AssigneeCochlear Limited
InventorsPeter John Blamey, Brett Anthony Swanson, Hugh McDermott, James F Patrick, Graeme Clark
Estimating the term…
The sound processor and method uses a model of basilar membrane motion to select stimuli, based upon the predicted motion which the acoustic signal presented would produce in an acoustically excited normally hearing cochlea. The filter; used, in contrast to single channel per electrode approaches, cover multiple channels and overlap with each other. Consequently the stimuli presented produce a neural excitation pattern which approximates the spatio-temporal travelling wave observed on the basilar membrane in an acoustically excited normally hearing cochlea. Preferably, the predicted electrode stimuli are based upon the instantaneous predicted amplitude of the electrode location.
A method of processing sound signals for use in generating electrical stimuli for an auditory prosthesis, said method including the steps of processing a sound signal according to a predetermined instruction set to produce a set of stimulus instructions for an implanted electrode array, characterised in that the predetermined instruction set operates so as to produce a set of stimulus instructions which, when presented by said electrode array, produces a neural excitation pattern which approximates the spatio-temporal pattern associated with the travelling wave observed on the basilar membrane in an acoustically excited normally-hearing cochlea when stimulated with said sound signal.
A sound processor for use in a cochlear implant system, said sound processor being of the type which receives sound signals, processes said signals according to a predetermined instruction set, and provides stimulation instructions for an implanted electrode array, characterised in that the predetermined instruction set operates so as to produce a set of stimulus instructions which, when presented by said electrode array, produces a neural excitation pattern which approximates the spacio-temporal pattern associated with the travelling wave observed on the basilar membrane in an acoustically excited normally-hearing cochlea when stimulated with said sound signal.
Dependencies are inferred from the claim text.