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Artificial cochlea acoustic nerve conductive electrode array capable of sensing music melodies

A cochlear implant and electrode array technology, applied in ear therapy, medical science, prosthesis, etc.

Active Publication Date: 2014-09-03
SHANDONG UNIV
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Problems solved by technology

[0009] In order to solve the defects existing in the layout position of the existing cochlear implant electrodes, the present invention discloses a cochlear implant auditory nerve conduction electrode array capable of perceiving music melody

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  • Artificial cochlea acoustic nerve conductive electrode array capable of sensing music melodies
  • Artificial cochlea acoustic nerve conductive electrode array capable of sensing music melodies
  • Artificial cochlea acoustic nerve conductive electrode array capable of sensing music melodies

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Embodiment Construction

[0206] Different positions on the human cochlear basilar membrane respond to different sound frequency signals such as figure 1 , which is the cochlear position-frequency topology map, which is an important theoretical basis for cochlear implant frequency (or position) encoding.

[0207] It can be known from music knowledge that the pitch of music has seven scales of C D E F G A B, that is, "1, 2, 3, 4, 5, 6, 7" in musical notation, which is an octave, and all musical pitches can be divided into ten. Octave. The minimum resolution pitch difference of the pitch is one semitone. If the semitone is used as the unit, the fundamental frequency comparison table of all notes is shown in Table 2.

[0208] Table 2 Music "note-fundamental frequency" comparison table (in semitone intervals, unit: Hz)

[0209]

[0210]

[0211] If the music melody information is completely and accurately expressed, so that the cochlear implanter can perceive the music melody, in theory, the positi...

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Abstract

The invention discloses an artificial cochlea acoustic nerve conductive electrode array capable of sensing music melodies. According to the base frequency of music notes, at the frequency sensing position of a human ear basilar membrane, the area between the top of a cochlea and the bottom of the cochlea is divided into frequency areas with specific stimulation signals according to a frequency band corresponding to a note with a half pitch; a specific electrode for conducting signals of the frequency band is arranged in each audio frequency area, namely the electrode is arranged at the frequency band corresponding to a possible base frequency and harmonic frequency of the music notes. The number of the electrodes is 80, and the electrodes correspond to the music audio frequency range of 60-6000 Hz. The artificial cochlea electrodes are distributed according to the scheme, harmonic features of music notes of various musical instruments within the range of 60-6000 Hz can be accurately transmitted in a relative complete mode, and subharmonic elements of each note can be accurately expressed; meanwhile, according to the electrode distribution scheme, the electrodes are distributed more densely than existing electrodes capable of sensing voice information, and voice feature information can still be transmitted accurately.

Description

technical field [0001] The invention relates to a cochlear implant auditory nerve conduction electrode array capable of perceiving music melody. Background technique [0002] As we all know, the melody of music is shown by the length and height changes of musical notes (that is, the fundamental frequency of sound, also known as pitch). However, the inner part of the human ear (i.e., the cochlea) is the analyzer or receptor of sound spectrum information, and the topological correspondence between the top of the cochlea and the bottom of the cochlea and the sound frequency, such as figure 1 shown. It is based on the auditory perception correspondence of this theory that cochlear implants have solved the auditory restoration function of human language sound reconstruction. Due to the spectral structure and distribution characteristics of speech sounds, the current mainstream cochlear implant products mostly use metal electrodes with 8 to 22 conductors. Table 1 shows the elec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/18A61F11/04
Inventor 田岚宋清华黄静如
Owner SHANDONG UNIV
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