Method and apparatus for providing spread correction in a multi-channel cochlear prosthesis

Abstract

Abstract By using a deconvolution technique, the outputs of a speech processor to the electrodes, based on current spread curves, the proper outputs of each eletrode are determined to provide the desired stimulation of the nerves. It has further been found that either overestimation or underestimation of the problem will result in improper stimulation and, in fact, a diminished accuracy of stimulation of the nerve rather than enhanced stimulation. Thus, the method relies on an inverse convolution of what amounts to the known desired stimulation of the auditory nerves to determine what information should be provided at the electrodes which are connected to the output channels of the stimulator system. By analysis of these deconvolution techniques, instead of having a range of positive stimulations of the electrodes to produce the output spread curves, some positive and some negative stimulation of these output electrodes will be necessary to produce the proper range of stimulation and the necessary peaks and slopes of a desired curve to represent a desired sound pattern.

Inventors

• 👤 Dirk S. Van Compernolle

Bibliographic Details