Electrical auditory prosthesis single processing method and system

The invention provides an electrical auditory prosthesis signal processing method, and belongs to the field of medical instruments. The method comprises the following steps: firstly utilizing a band-pass filter group to carry out filtering on a collected sound signal; extracting a slow-varying signal u (t) after signals x (t) output by all band-pass filters are subjected to the downward frequency shift to a low-frequency range, wherein in the downward frequency shift processing procedure, the movable frequency of the x (t) is equal to lower cut-off frequency fcl of a kth band-pass filter minus the lowest frequency fl of a kth electrode channel within a time-domain pitch processing range; finally, processing the extracted slow-varying signal u (t), and modulating the processed slow-varying signal on a carrier wave to be transmitted out. According the method, frequency allocation of the band-pass filters is realized through the time-domain processing capability in a single electrode channel of an implant user, the slow-varying signal is extracted according to the time-domain processing capability of the single electrode channel, and the extracted slow-varying signal can be transmitted to auditory nerves near to corresponding electrodes, so that the overall sound perception of the implant user can be improved.