Method and system for processing signal of channel self-adaptation dynamic peak artificial cochlea

Abstract

The invention discloses a method and system for processing a signal of a channel self-adaptation dynamic peak artificial cochlea. The method comprises the following steps frequency division processing is carried out on a transmitted sound signal, and the signal is decomposed into A frequency bands; the A frequency bands are combined into N channels according to the number N of usable electrodes, and envelope energy of each channel is stored at the same time; the target dynamic range of each channel is calculated, and the envelope energy of each channel is adjusted to be in the target dynamic range; the N channels are ranked according to the size of the envelope energy of the adjusted channels, and M channels with the largest energy are selected; sound-electric stimulus compression is carried out on the envelope energy of the M channels, and the channel needing to be stimulated among the M channels is determined, and the stimulus information and energy of the channel needing to be stimulated are transmitted. Therefore, by means of the method and system, the effect of background noise on recognition can be effectively reduced, and a normal audition environment effect can be guaranteed.

Description

technical field [0001] The invention relates to the field of nerve stimulation, in particular to a channel-adaptive dynamic peak cochlear artificial signal processing method and system. Background technique [0002] Hair cells in the human cochlea are sensory cells that receive sound. Severe hearing loss occurs when cochlear hair cell damage is severe. A cochlear implant is an electronic device that replaces damaged hair cells and regains sound signals through electrical stimulation of the auditory nerve. It usually consists of an external device and an implantable internal device. Devices outside the body are called speech processors and devices inside the body are called implants. The cochlear implant is surgically buried in the subcutaneous part behind the patient's ear, and the electrode array in the implant is inserted into the scala tympani of the patient's cochlea during the operation to interact with the patient's auditory nerve. figure 1 A schematic diagram of a...

AI Technical Summary

Problems solved by technology

At this time, although the implanter has no perception of sound, the energy loss is still not much different from the normal listening situation

In an environment with a certain amount of background noise, especially under a fixed background noise, although the implanter has sound perception, the external noise will bring unpleasant feelings

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