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Artificial cochlea audio channel distribution method and device for recognizing music

A cochlear implant and audio channel technology is applied in the field of cochlear implant audio channel distribution for recognizing music. Ability and appreciation ability, the effect of improving the recognition rate

Pending Publication Date: 2020-11-10
EYE & ENT HOSPITAL SHANGHAI MEDICAL SCHOOL FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3. After the cochlear implant converts the sound signal into an electrical signal, it does not accurately stimulate the spiral neuron group corresponding to the normal human ear, so that the frequency information of the sound signal changes and the sound is distorted
4. After the cochlear implant converts the sound signal into an electrical signal, it does not follow the non-linear coding of the sound intensity of the normal human ear, which makes the sound intensity distorted
[0005] Moreover, the electrodes of the existing cochlear implants are evenly arranged. After the sound is sampled and filtered, the corresponding spiral neuron group cannot be accurately stimulated; the electrode stimulation of the cochlear implant is either too high or too low in pitch, resulting in sound distortion. , which is very different from the sound perceived by normal human ears

Method used

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  • Artificial cochlea audio channel distribution method and device for recognizing music
  • Artificial cochlea audio channel distribution method and device for recognizing music
  • Artificial cochlea audio channel distribution method and device for recognizing music

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Embodiment 1

[0023] attached figure 1 It is a schematic flow chart of a cochlear implant audio channel distribution method for identifying music in the present invention, as figure 1 As shown, the method at least includes steps S102-S104:

[0024] Step S102: Obtain the audio corresponding to the scale;

[0025] In order to enable patients with cochlear implants to better appreciate music, it is optional to obtain an 88-key piano scale;

[0026] In order to make the arrangement of channels applying this method closer to normal human ears, in some optional embodiments of this application:

[0027] Get the audio corresponding to the scale, including:

[0028] Step S1022: Expand the audio corresponding to the piano scale;

[0029] According to the frequency range 20-20000Hz that can be recognized by the normal human ear, optionally, the audio frequency of 88 piano keys is used as the center of the sound frequency, and 20 audio frequencies are added to the high frequency area;

[0030] Ste...

Embodiment 2

[0036] This embodiment will be described in conjunction with specific embodiments:

[0037] Step S102: Obtain the audio corresponding to the scale; as shown in Table 1: Piano pitch and frequency comparison table, the sound frequencies and arrangement rules of the 88 keys of the piano can be obtained;

[0038] Table 1: Piano pitch and frequency comparison table

[0039]

[0040] Step S1022: Expand the audio corresponding to the piano scale; according to the law that the sound frequency of each octave is twice the sound frequency of the previous octave, as shown in Table 2:

[0041] Step S104: Obtain the basilar membrane position corresponding to the audio;

[0042] Use the first formula: F=A(10 ax -k) Calculate the corresponding position of each frequency channel, A takes a value of 165.4, a takes a value of 0.06, and k takes a value of 0.88; the results are as shown in Table 2:

[0043] Table 2: Basement Membrane Locations Corresponding to 108 Audios

[0044]

[0045...

Embodiment 3

[0050]This embodiment provides a cochlear implant on which channel distribution is distributed using the cochlear implant audio channel distribution method for music recognition described in the present invention; including an external device and an implant; the external device is a speech processor, The implant is provided with stimulation channels distributed by the cochlear implant audio channel distribution method for music recognition described in the present invention, and the external voice signal is converted into a stimulation signal through encoding, and the auditory nerve is stimulated through the stimulation channel, so that the patient can recognize wider frequency rate sound.

[0051] It should be noted that: the present invention is especially suitable for light stimulation of cochlear implants. The stimulation of light to the spiral neuron group is highly selective, and there will be no mutual interference of adjacent channels caused by current stimulation. It i...

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Abstract

The invention relates to the technical field of an artificial cochlea, and discloses an artificial cochlea audio channel distribution method and device for recognizing music. The method comprises thefollowing steps that an audio corresponding to a musical scale is acquired, a basilar membrane position corresponding to the audio is acquired for arranging a channel for stimulating auditory nerves,wherein the acquired musical scale is a 88-key piano musical scale, and an audio corresponding to the piano musical scale can be expanded, the arranged channel can stimulate the auditory nerves by using optical signals or electric signals, and the method has the advantages that arrangement may be performed according to audio requirements, corresponding spiral ganglion neuron groups are accuratelystimulated, and the dual requirements of people for speech recognition and music appreciation can be met.

Description

technical field [0001] The invention relates to the technical field of cochlear implants, in particular to a cochlear implant audio channel distribution method and device for identifying music. Background technique [0002] Cochlear implants are an effective means of treating severe or extremely severe sensorineural deafness in both ears. The vast majority of sensorineural deafness is caused by the irreversible damage of the first-order neurons of hearing, the cochlear hair cells. The cochlear implant converts the sound signal into an electrical signal, bypasses the damaged cochlear hair cells through the multi-channel electrodes implanted in the cochlea, and directly stimulates the second level of auditory neurons - cochlear spiral neurons to restore hearing . [0003] The working principle of the cochlear implant is: the cochlear implant collects sound signals with a frequency from 100Hz to 8000Hz, converts them into electrical signals, and then directly stimulates the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/36H04R25/00
CPCA61N1/36038H04R25/48
Inventor 杜强李华伟
Owner EYE & ENT HOSPITAL SHANGHAI MEDICAL SCHOOL FUDAN UNIV
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