CN104013480B - Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm - Google Patents
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm Download PDFInfo
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Abstract
The invention discloses a kind of can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, on people's ear basement membrane frequency perceived position, according to the fundamental frequency of musical tones, the frequency field of particular stimulation signal will be separated at the bottom of cupula cochleae to snail by the corresponding frequency band of half pitch note; In each sound frequency regions, place one for conducting the special electrodes of this band signal, that is, electrode is placed on the possible fundamental frequency of musical tones and the corresponding band position of harmonic frequency.Number of poles is 80, the music audio range of corresponding 60Hz ~ 6000Hz.If carry out layout according to such scheme to artificial cochlea electrode, can more intactly accurately transmit the harmonic characteristic of the musical tones of musical instrument various in 60 ~ 6000Hz frequency range, and each harmonic composition of each note also can accurately be expressed; Meanwhile, this electrode lay-out's scheme is than the electrode more crypto set of current energy perceptual speech information, and voice characteristics information still can accurately transmit.
Description
Technical field
The present invention relates to a kind of can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm.
Background technology
As everyone knows, the melody of music is represented with height change by the length of the note (the namely fundamental frequency of sound, also known as pitch) of music.But people's in ear ear portions (i.e. cochlea) is analyzer or the sensor of sound spectrum information, with the topological corresponding relation of sound frequency at the bottom of from cupula cochleae to snail, as shown in Figure 1.Listen perception corresponding relation just according to this theory, what artificial cochlea device had solved human language speech reconstruction listens repair function.Due to spectrum structure and the characteristic distributions of speech, artificial cochlea's product of current main flow mostly is 8 to 22 and leads metal electrode.Table 1 provides the distribution of electrodes situation of 22 passage artificial cochleas, each mid-band frequency that namely 22 electrodes of corresponding people's ear cochlea at the bottom of from cupula cochleae to snail are roughly corresponding and bandwidth.By the non-linear relation of auditory perceptual frequency, usual cupula cochleae part induction low-frequency component, distribution of electrodes is closeer, and snail bottom part induction of high frequency composition, distribution of electrodes is relatively sparse.
Table 122 passage artificial cochlea electrode array layout respective frequencies table
| Passage | Mid frequency (Hz) | Bandwidth range (Hz) |
| 1 | 250 | 120 |
| 2 | 375 | 130 |
| 3 | 500 | 120 |
| 4 | 625 | 130 |
| 5 | 750 | 120 |
| 6 | 875 | 130 |
| 7 | 940 | 120 |
| 8 | 1125 | 130 |
| 9 | 1250 | 120 |
| 10 | 1435 | 250 |
| 11 | 1685 | 250 |
| 12 | 1935 | 250 |
| 13 | 2185 | 250 |
| 14 | 2500 | 380 |
| 15 | 2875 | 370 |
| 16 | 3310 | 500 |
| 17 | 3810 | 500 |
| 18 | 4375 | 630 |
| 19 | 5000 | 620 |
| 20 | 5685 | 750 1 --> |
| 21 | 6500 | 880 |
| 22 | 7440 | 1000 |
Because communication is primary demand and object that the mankind listen perception, the perception of solution voice and understanding are the top priorities of artificial cochlea, and this problem has been the problem that artificial cochlea better solves at present.But, when carrying out perception music information with this device, also there is more problem.A lot of scholar has carried out the evaluation studies of perception of sound effect to existing artificial cochlea, assessment result shows, to severe sensorineural deafness patient before language, namely the congenital deafness patient that normal speech ability to exchange is deaf before grasping, after artificial cave, speech exchange is substantially no problem, but is difficult to the accurately cognition of foundation to music.Analyze its reason can find, music signal and voice signal distribute at spectrum structure and signal time structure distribution all have larger difference, the finer and closely woven complexity of music signal, existing acoustic nerve conducting electrode array layout should be the bottleneck of the music information of accurately transmission and the fine and closely woven complexity of perception.
For voice signal, its frequency coverage relative narrower, about 60-5000Hz, its fundamental frequency (i.e. pitch) excursion is approximately 60-400Hz, and sound spectrum structure generally only has 3 to 5 frequency spectrum formants, formant distribution characteristics characterizes the pronunciation content of word, take feature as the leading factor, voice height (i.e. fundamental frequency) and the harmonic components thereof of speaker, also have in spectrum structure distribution, but relative resonance peak feature, shows more weak.Broadband language spectrum as Suo Shi Fig. 2 (a), dark wide whippletree is resonance peak structure, Fig. 2 (c) is arrowband language spectrum, dark whippletree band is still the resonance peak structure of voice signal, two collection of illustrative plates structures all represent with long whippletree, illustrate that the sound spectrum " position encoded " of voice signal is mainly set to feature with resonance peak.Therefore, excite acoustic nerve granting by less electrod-array, can transmit or express the frequency estimation information of voice signal more exactly.
For music, wherein most important melodic information simply can be interpreted as pattern arrangement and the combination of the change of note height and the change of note length.Note, as the basic composition unit of music expression, topmost feature is exactly pitch, and its corresponding physical parameter is exactly " fundamental frequency " in sound.The height excursion of musical tones is wider, generally at tens Hz to several thousand Hz.The sound spectrum feature of music: frequency coverage region is much wider than voice, and spectrum energy overall distribution is more smooth, without obvious resonance peak structure, as Fig. 2 (b), but the equally spaced harmonic structure in respective frequencies is very abundant, as Fig. 2 (d).These harmonic structures arranged at equal intervals are principal character performances of music signal pitch (as Fig. 3), tone color (i.e. musical instrument kind) (as Fig. 4), and different pitch and tone color, the frequency difference of corresponding Resonance Wave Composition is very fine and closely woven.To allow the perception of cochlear implant energy these difference or features, the conducting electrode array to triggering acoustic nerve granting is needed to carry out more dense layout, to realize accurately transmitting principal character and the information that voiceprint feature also more accurately can transmit music sound spectrum.
Summary of the invention
In order to solve the defect that existing artificial cochlea electrode placement position exists, the invention discloses a kind of can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm.
The technical solution used in the present invention is as follows:
A kind of can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, on basilar membrane, according to the characteristic frequency corresponding relation of musical tones, phonosensitive Whole frequency band corresponding at the bottom of cupula cochleae to snail is separated into the music response region of response particular note stimulus signal; In each music response region, place one for conducting or the counter electrode of this band signal of perception, namely each electrode is placed in the character pair frequency band at musical tones place.
If described electrode with half pitch be interval, corresponding 60-6000Hz phonosensitive scope, need arrange that number of poles is 80; 80 electrodes are divided into 8 groups according to the corresponding relation of scale, pitch, and first group comprises an electrode, corresponding with B scale, pitch 1 degree of frequency band; The second to seven groups comprise 12 electrodes respectively, and each electrode is corresponding with the frequency band of the C note corresponding to pitch 2-7 degree, C#Db note, D note, D#/Eb note, E note, F note, F#/Eb note, G note, G#/Ab note, A note, A#/Bb note, B note; 8th group comprises 7 electrodes, and each electrode C scale corresponding with pitch 8 degree is corresponding to the frequency band of F#/Eb scale.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the electrode of first group is corresponding with the frequency band 59.9--63.6HZ of B note, pitch 1 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the electrode of first group is corresponding with the mid frequency 61.7HZ of B note, pitch 1 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, second group:
First electrode is corresponding with the frequency band 63.6--67.4HZ of C note, pitch 2 degree;
Second electrode is corresponding with the frequency band 67.4-71.2HZ of C#Db note, pitch 2 degree;
3rd electrode is corresponding with frequency band 71.2 – 75.5 of D note, pitch 2 degree;
4th electrode is corresponding with the frequency band 75.6-80.0HZ of D#/Eb note, pitch 2 degree;
5th electrode is corresponding with the frequency band 80.0-84.8HZ of E note, pitch 2 degree;
6th electrode is corresponding with the frequency band 84.8-89.8HZ of F note, pitch 2 degree;
7th electrode is corresponding with the frequency band 89.8-95.1HZ of F#/Eb note, pitch 2 degree;
8th electrode is corresponding with the frequency band 95.1-100.9HZ of G note, pitch 2 degree;
9th electrode is corresponding with the frequency band 100.9-106.8HZ of G#/Ab note, pitch 2 degree;
Tenth electrode is corresponding with the frequency band 106.8-113.2HZ of A note, pitch 2 degree;
11 electrode is corresponding with the frequency band 113.2-119.9HZ of A#/Bb note, pitch 2 degree;
12 electrode is corresponding with the frequency band 119.9-127.1HZ of B note, pitch 2 degree.
Described can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, second group
First electrode is corresponding with the mid frequency 65.4HZ of C note, pitch 2 degree;
Second electrode is corresponding with the mid frequency 69.3HZ of C#Db note, pitch 2 degree;
3rd electrode is corresponding with the mid frequency 73.4 of D note, pitch 2 degree;
4th electrode is corresponding with the mid frequency 77.8HZ of D#/Eb note, pitch 2 degree;
5th electrode is corresponding with the mid frequency 82.4HZ of E note, pitch 2 degree;
6th electrode is corresponding with the mid frequency 87.3HZ of F note, pitch 2 degree;
7th electrode is corresponding with the mid frequency 92.4HZ of F#/Eb note, pitch 2 degree;
8th electrode is corresponding with the mid frequency 98.0HZ of G note, pitch 2 degree;
9th electrode is corresponding with the mid frequency 103.8HZ of G#/Ab note, pitch 2 degree;
Tenth electrode is corresponding with the mid frequency 110.0HZ of A note, pitch 2 degree;
11 electrode is corresponding with the mid frequency 116.5HZ of A#/Bb note, pitch 2 degree;
12 electrode is corresponding with the mid frequency 123.5HZ of B note, pitch 2 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the 3rd group:
First electrode is corresponding with the frequency band 127.1-134.5HZ of C note, pitch 3 degree;
Second electrode is corresponding with the frequency band 134.5-142.6HZ of C#Db note, pitch 3 degree;
3rd electrode is corresponding with the frequency band 142.6-151.0HZ of D note, pitch 3 degree;
4th electrode is corresponding with the frequency band 151.0-160.1HZ of D#/Eb note, pitch 3 degree;
5th electrode is corresponding with the frequency band 160.1-169.5HZ of E note, pitch 3 degree;
6th electrode is corresponding with the frequency band 169.5-179.7HZ of F note, pitch 3 degree;
7th electrode is corresponding with the frequency band 179.7-190.3HZ of F#/Eb note, pitch 3 degree;
8th electrode is corresponding with the frequency band 190.3-201.7HZ of G note, pitch 3 degree;
9th electrode is corresponding with the frequency band 201.7-213.6HZ of G#/Ab note, pitch 3 degree;
Tenth electrode is corresponding with the frequency band 213.6-226.4HZ of A note, pitch 3 degree;
11 electrode is corresponding with the frequency band 226.4-239.8HZ of A#/Bb note, pitch 3 degree;
12 electrode is corresponding with the frequency band 239.8-254.1HZ of B note, pitch 3 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the 3rd group:
First electrode is corresponding with the mid frequency 130.8HZ of C note, pitch 3 degree;
Second electrode is corresponding with the mid frequency 138.6HZ of C#Db note, pitch 3 degree;
3rd electrode is corresponding with the mid frequency 146.8HZ of D note, pitch 3 degree;
4th electrode is corresponding with the mid frequency 155.6HZ of D#/Eb note, pitch 3 degree;
5th electrode is corresponding with the mid frequency 164.8HZ of E note, pitch 3 degree;
6th electrode is corresponding with the mid frequency 174.6HZ of F note, pitch 3 degree;
7th electrode is corresponding with the mid frequency 185.0HZ of F#/Eb note, pitch 3 degree;
8th electrode is corresponding with the mid frequency 196.0HZ of G note, pitch 3 degree;
9th electrode is corresponding with the mid frequency 207.7HZ of G#/Ab note, pitch 3 degree;
Tenth electrode is corresponding with the mid frequency 220.0HZ of A note, pitch 3 degree;
11 electrode is corresponding with the mid frequency 233.1HZ of A#/Bb note, pitch 3 degree;
12 electrode is corresponding with the mid frequency 246.9HZ of B note, pitch 3 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the 4th group:
First electrode is corresponding with the frequency band 254.1-269.1HZ of C note, pitch 4 degree;
Second electrode is corresponding with the frequency band 269.1-285.2HZ of C#Db note, pitch 4 degree;
3rd electrode is corresponding with the frequency band 285.2-302.1HZ of D note, pitch 4 degree;
4th electrode is corresponding with the frequency band 302.1-320.2HZ of D#/Eb note, pitch 4 degree;
5th electrode is corresponding with the frequency band 320.2-339.1HZ of E note, pitch 4 degree;
6th electrode is corresponding with the frequency band 339.1-359.4HZ of F note, pitch 4 degree;
7th electrode is corresponding with the frequency band 359.4-380.6HZ of F#/Eb note, pitch 4 degree;
8th electrode is corresponding with the frequency band 380.6-403.4HZ of G note, pitch 4 degree;
9th electrode is corresponding with the frequency band 403.4-427.2HZ of G#/Ab note, pitch 4 degree;
Tenth electrode is corresponding with the frequency band 427.2-452.8HZ of A note, pitch 4 degree;
11 electrode is corresponding with the frequency band 452.8-479.5HZ of A#/Bb note, pitch 4 degree;
12 electrode is corresponding with the frequency band 479.5-508.2HZ of B note, pitch 4 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the 4th group:
First electrode is corresponding with the mid frequency 261.6HZ of C note, pitch 4 degree;
Second electrode is corresponding with the mid frequency 277.2HZ of C#Db note, pitch 4 degree;
3rd electrode is corresponding with the mid frequency 293.7HZ of D note, pitch 4 degree;
4th electrode is corresponding with the mid frequency 311.1HZ of D#/Eb note, pitch 4 degree;
5th electrode is corresponding with the mid frequency 329.6HZ of E note, pitch 4 degree;
6th electrode is corresponding with the mid frequency 349.2HZ of F note, pitch 4 degree;
7th electrode is corresponding with the mid frequency 370.0HZ of F#/Eb note, pitch 4 degree;
8th electrode is corresponding with the mid frequency 392.0HZ of G note, pitch 4 degree;
9th electrode is corresponding with the mid frequency 415.3HZ of G#/Ab note, pitch 4 degree;
Tenth electrode is corresponding with the mid frequency 440.0HZ of A note, pitch 4 degree;
11 electrode is corresponding with the mid frequency 466.2HZ of A#/Bb note, pitch 4 degree;
12 electrode is corresponding with the mid frequency 493.9HZ of B note, pitch 4 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the 5th group:
First electrode is corresponding with the frequency band 508.2-538.3HZ of C note, pitch 5 degree;
Second electrode is corresponding with the frequency band 538.3-570.5HZ of C#Db note, pitch 5 degree;
3rd electrode is corresponding with the frequency band 570.5-604.1HZ of D note, pitch 5 degree;
4th electrode is corresponding with the frequency band 604.1-640.5HZ of D#/Eb note, pitch 5 degree;
5th electrode is corresponding with the frequency band 640.5-678.1HZ of E note, pitch 5 degree;
6th electrode is corresponding with the frequency band 678.1-718.9HZ of F note, pitch 5 degree;
7th electrode is corresponding with the frequency band 718.9---761.1HZ of F#/Eb note, pitch 5 degree;
8th electrode is corresponding with the frequency band 761.1---806.9HZ of G note, pitch 5 degree;
9th electrode is corresponding with the frequency band 806.9---854.3HZ of G#/Ab note, pitch 5 degree;
Tenth electrode is corresponding with the frequency band 854.3-905.7HZ of A note, pitch 5 degree;
11 electrode is corresponding with the frequency band 905.7-958.9HZ of A#/Bb note, pitch 5 degree;
12 electrode is corresponding with the frequency band 958.9-1016.7HZ of B note, pitch 5 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the 5th group:
First electrode is corresponding with the mid frequency 523.3HZ of C note, pitch 5 degree;
Second electrode is corresponding with the mid frequency 554.4HZ of C#Db note, pitch 5 degree;
3rd electrode is corresponding with the mid frequency 587.3HZ of D note, pitch 5 degree;
4th electrode is corresponding with the mid frequency 622.3HZ of D#/Eb note, pitch 5 degree;
5th electrode is corresponding with the mid frequency 659.3HZ of E note, pitch 5 degree;
6th electrode is corresponding with the mid frequency 698.5HZ of F note, pitch 5 degree;
7th electrode is corresponding with the mid frequency 740.0HZ of F#/Eb note, pitch 5 degree;
8th electrode is corresponding with the mid frequency 784.0HZ of G note, pitch 5 degree;
9th electrode is corresponding with the mid frequency 830.6HZ of G#/Ab note, pitch 5 degree;
Tenth electrode is corresponding with the mid frequency 880.0HZ of A note, pitch 5 degree;
11 electrode is corresponding with the mid frequency 932.3HZ of A#/Bb note, pitch 5 degree;
12 electrode is corresponding with the mid frequency 987.8HZ of B note, pitch 5 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the 6th group:
First electrode is corresponding with the frequency band 1016.7-1076.3HZ of C note, pitch 6 degree;
Second electrode is corresponding with the frequency band 1076.3-1141.1HZ of C#Db note, pitch 6 degree;
3rd electrode is corresponding with the frequency band 1141.1-1208.3HZ of D note, pitch 6 degree;
4th electrode is corresponding with the frequency band 1208.3-1280.7HZ of D#/Eb note, pitch 6 degree;
5th electrode is corresponding with the frequency band 1280.7-1356.3HZ of E note, pitch 6 degree;
6th electrode is corresponding with the frequency band 1356.3-1437.5HZ of F note, pitch 6 degree;
7th electrode is corresponding with the frequency band 1437.5-1522.5HZ of F#/Eb note, pitch 6 degree;
8th electrode is corresponding with the frequency band 1522.5-1613.5HZ of G note, pitch 6 degree;
9th electrode is corresponding with the frequency band 1613.5-1708.9HZ of G#/Ab note, pitch 6 degree;
Tenth electrode is corresponding with the frequency band 1708.9-1811.1HZ of A note, pitch 6 degree;
11 electrode is corresponding with the frequency band 1811.1-1918.3HZ of A#/Bb note, pitch 6 degree;
12 electrode is corresponding with the frequency band 1918.3-2032.7HZ of B note, pitch 6 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the 6th group:
First electrode is corresponding with the frequency band 1046.5HZ of C note, pitch 6 degree;
Second electrode is corresponding with the frequency band 1108.7HZ of C#Db note, pitch 6 degree;
3rd electrode is corresponding with the frequency band 1174.7HZ of D note, pitch 6 degree;
4th electrode is corresponding with the frequency band 1244.5HZ of D#/Eb note, pitch 6 degree; 5th electrode is corresponding with the frequency band 1318.5HZ of E note, pitch 6 degree;
6th electrode is corresponding with the frequency band 1396.9HZ of F note, pitch 6 degree;
7th electrode is corresponding with the frequency band 1480.0HZ of F#/Eb note, pitch 6 degree;
8th electrode is corresponding with the frequency band 1568.0HZ of G note, pitch 6 degree;
9th electrode is corresponding with the frequency band 1661.2HZ of G#/Ab note, pitch 6 degree;
Tenth electrode is corresponding with the frequency band 1760.0HZ of A note, pitch 6 degree;
11 electrode is corresponding with the frequency band 1864.7HZ of A#/Bb note, pitch 6 degree;
12 electrode is corresponding with the frequency band 1975.5HZ of B note, pitch 6 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the 7th group:
First electrode is corresponding with the frequency band 2032.7-2153.3HZ of C note, pitch 7 degree;
Second electrode is corresponding with the frequency band 2153.3-2281.7HZ of C#Db note, pitch 7 degree;
3rd electrode is corresponding with the frequency band 2281.7-2416.9HZ of D note, pitch 7 degree;
4th electrode is corresponding with the frequency band 2416.9---2561.1HZ of D#/Eb note, pitch 7 degree;
5th electrode is corresponding with the frequency band 2561.1-2712.9HZ of E note, pitch 7 degree;
6th electrode is corresponding with the frequency band 2712.9-2874.7HZ of F note, pitch 7 degree;
7th electrode is corresponding with the frequency band 2874.7-3045.3HZ of F#/Eb note, pitch 7 degree;
8th electrode is corresponding with the frequency band 3045.3-3226.7HZ of G note, pitch 7 degree;
9th electrode is corresponding with the frequency band 3226.7-3418.1HZ of G#/Ab note, pitch 7 degree;
Tenth electrode is corresponding with the frequency band 3418.1-3621.9HZ of A note, pitch 7 degree;
11 electrode is corresponding with the frequency band 3621.9-3836.7HZ of A#/Bb note, pitch 7 degree;
12 electrode is corresponding with the frequency band 3836.7-4065.5HZ of B note, pitch 7 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the 7th group:
First electrode is corresponding with the mid frequency 2093.0HZ of C note, pitch 7 degree;
Second electrode is corresponding with the mid frequency 2217.5HZ of C#Db note, pitch 7 degree;
3rd electrode is corresponding with the mid frequency 2349.3HZ of D note, pitch 7 degree;
4th electrode is corresponding with the mid frequency 2489.0HZ of D#/Eb note, pitch 7 degree;
5th electrode is corresponding with the mid frequency 2637.0HZ of E note, pitch 7 degree;
6th electrode is corresponding with the mid frequency 2793.8HZ of F note, pitch 7 degree;
7th electrode is corresponding with the mid frequency 2960.0HZ of F#/Eb note, pitch 7 degree;
8th electrode is corresponding with the mid frequency 3136.0HZ of G note, pitch 7 degree;
9th electrode is corresponding with the mid frequency 3322.4HZ of G#/Ab note, pitch 7 degree;
Tenth electrode is corresponding with the mid frequency 3520.0HZ of A note, pitch 7 degree;
11 electrode is corresponding with the mid frequency 3729.3HZ of A#/Bb note, pitch 7 degree;
12 electrode is corresponding with the mid frequency 3951.1HZ of B note, pitch 7 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the 8th group:
First electrode is corresponding with the frequency band 4065.5-4306.5HZ of C note, pitch 8 degree;
Second electrode is corresponding with the frequency band 4306.5-4563.3HZ of C#Db note, pitch 8 degree;
3rd electrode is corresponding with the frequency band 4563.3-4833.9HZ of D note, pitch 8 degree;
4th electrode is corresponding with the frequency band 4833.9-5122.1HZ of D#/Eb note, pitch 8 degree;
5th electrode is corresponding with the frequency band 5122.1-5425.9HZ of E note, pitch 8 degree;
6th electrode is corresponding with the frequency band 5425.9-5749.5HZ of F note, pitch 8 degree;
7th electrode is corresponding with the frequency band 5749.5-6090.3HZ of F#/Eb note, pitch 8 degree.
Can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, the 8th group:
First electrode is corresponding with the mid frequency 4186.0HZ of C note, pitch 8 degree;
Second electrode is corresponding with the mid frequency 4434.9HZ of C#Db note, pitch 8 degree;
3rd electrode is corresponding with the mid frequency 4698.6HZ of D note, pitch 8 degree;
4th electrode is corresponding with the mid frequency 4978.0HZ of D#/Eb note, pitch 8 degree;
5th electrode is corresponding with the mid frequency 5274.0HZ of E note, pitch 8 degree;
6th electrode is corresponding with the mid frequency 5587.7HZ of F note, pitch 8 degree;
7th electrode is corresponding with the mid frequency 5919.9HZ of F#/Eb note, pitch 8 degree.
If the musical tones that can hear to frequency low side, high-endly extend to 30Hz-8000Hz respectively, calculate by this rule, electrode number will increase to 97, and each passband distribution is by that analogy.
Beneficial effect of the present invention is as follows:
If carry out layout according to such scheme to artificial cochlea electrode, accurately can transmit the harmonic characteristic of note in 60 ~ 6000Hz than more complete, and each harmonic composition of each note also can be expressed preferably.For Fig. 2 (d), all harmonic waves (i.e. all dark whippletree frequency contents in narrow band spectrum) in this figure can be delivered on the acoustic nerve of internal ear by such electrod-array correspondence; Fig. 3 (a)-Fig. 3 (d) is sound spectrum (rightmost side legend) distribution situation of same musical instrument under different pitch interval, and Fig. 4 (1)-Fig. 4 (8) is the distribution situation of the sound spectrum of the same note C3 of different cultivars instrument playing; By that analogy, the musical sound of multiple instrument playing, the distribution of its sound spectrum should be combination or the superposition of above various situation, the electrode lay-out of the employing program all can transmit or characterize the Superposition Characteristics information in the distribution of various sound spectrum exactly, thus makes the Music perception effect of cochlear implant have very large improvement.
Accompanying drawing explanation
Fig. 1 cochlea position topological diagram corresponding to frequency;
Fig. 2 (a) voice " yi1 " broadband language spectrum;
Fig. 2 (b) piano C4 sound broadband language spectrum;
Fig. 2 (c) voice " yi1 " arrowband language spectrum;
Fig. 2 (d) piano C4 sound arrowband language spectrum.
Fig. 3 (a) differs the wide-band spectrogram of continuous five notes of 1 semitone for accordion;
Fig. 3 (b) differs the narrow-band spectrogram of continuous five notes of 1 semitone for accordion;
Fig. 3 (c) differs the wide-band spectrogram of continuous five notes of 5 semitones for accordion
Fig. 3 (d) differs the narrow-band spectrogram of continuous five notes of 5 semitones for accordion;
The oscillogram of Fig. 4 (1) clarinet musical notes C3;
The narrow-band spectrogram of Fig. 4 (2) clarinet musical notes C3;
The oscillogram of Fig. 4 (3) piano performance note C3;
The narrow-band spectrogram of Fig. 4 (4) piano performance note C3;
The oscillogram of Fig. 4 (5) violin note C3;
The narrow-band spectrogram of Fig. 4 (6) violin note C3;
The oscillogram of Fig. 4 (7) carillon musical notes C3;
The narrow-band spectrogram of Fig. 4 (8) carillon musical notes C3.
Detailed description of the invention
Positions different on the basilar membrane of people responds corresponding different sound frequency signals as Fig. 1, and be the position frequency topological diagram of cochlea, this is the Important Theoretic Foundation that artificial cochlea's frequency (or position) is encoded.
From music knowledge, the pitch of music has CDEFGAB seven scales, " 1,2,3,4,5,6,7 " namely in music numerical notation, and be an octave, all music pitches can be divided into ten octaves.The minimum resolution pitch difference of pitch is a semitone, if in units of semitone, the fundamental frequency synopsis of whole note is as shown in table 2.
Table 2 music " note-fundamental frequency " synopsis (with semitone interval, unit: Hz)
If complete and accurate expresses music rhythm information, make cochlear implant perception music rhythm, frequency information or the harmonic information of 120 notes during the position encoded accurate transfer of artificial cochlea is shown will be made in theory, need to arrange 120 electrodes by " frequency-position " topological relation on people's ear basement membrane respective frequencies position, and the structure of maximum 22 electrodes of current artificial cochlea cannot realize.Therefore the present invention proposes a kind of can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, on basilar membrane, according to the characteristic frequency corresponding relation of musical tones, phonosensitive Whole frequency band corresponding at the bottom of cupula cochleae to snail is separated into the music response region of response particular note stimulus signal; In each music response region, place one for conducting or the counter electrode of this band signal of perception, namely each electrode is placed in the character pair frequency band at musical tones place.
If consider the normal perceived frequency scope of people's ear, and note the most often adopts scope, only arrange electrode to the note of pitch in 60 ~ 6000Hz, number of poles is 80; 80 electrodes are divided into 8 groups according to the corresponding relation of scale, pitch, and first group comprises an electrode, corresponding with B scale, pitch 1 degree of frequency band; The second to seven groups comprise 12 electrodes respectively, and each electrode is corresponding with the frequency band of the C note corresponding to pitch 2-7 degree, C#Db note, D note, D#/Eb note, E note, F note, F#/Eb note, G note, G#/Ab note, A note, A#/Bb note, B note; 8th group comprises 7 electrodes, and each electrode C scale corresponding with pitch 8 degree is corresponding to the frequency band of F#/Eb scale; Specifically as shown in table 2; This electrode lay-out both can meet the needs that original voice messaging transmits, also the information of music rhythm can accurately be transmitted, each band connection frequency distribution that concrete each electrode pair is answered is as shown in table 3: certainly, realize the accurate transmission of all acoustic informations, except propose here auditory perceptual correspondence position coding electrod-array transformation except, the time encoding of intracellular signaling also should there is supporting coding strategy, do not launch in detail at this;
Corresponding each band connection frequency distribution (unit: Hz) of artificial cochlea electrode array that table 3 can be listened to the music
(note: be as the criterion with each mid frequency, each passband span slightly error)
If the musical tones that can hear to frequency low side, high-endly extend to 30Hz-8000Hz respectively, calculate by this rule, electrode number will increase to 97, and each passband distribution is by that analogy.
If carry out layout according to such scheme to artificial cochlea electrode, accurately can transmit the harmonic characteristic of note in 60 ~ 6000Hz than more complete, and each harmonic composition of each note also can accurately be expressed.For Fig. 2 (d), all harmonic waves (i.e. all dark whippletree frequency contents) in this figure can be delivered on the acoustic nerve of internal ear by such electrod-array correspondence, and the Music perception effect of cochlear implant can be made to have very large improvement.
Moreover, this more intensive configuration of electrodes can not have any adverse influence to the perception of voice signal, because number of electrodes is less needed for the perception of voice, when perceptual speech, only need activate a small amount of counter electrode real work in this array layout.
Claims (17)
1. one kind can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, on basilar membrane, according to the characteristic frequency corresponding relation of musical tones, phonosensitive Whole frequency band corresponding at the bottom of cupula cochleae to snail is separated into the music response region of response particular note stimulus signal; In each music response region, place one for conducting or the counter electrode of this band signal of perception, namely each electrode is placed in the character pair frequency band at musical tones place;
If described electrode with half pitch be interval, corresponding 60-6000Hz phonosensitive scope, need arrange that number of poles is 80; 80 electrodes are divided into 8 groups according to the corresponding relation of scale, pitch, and first group comprises an electrode, corresponding with B scale, pitch 1 degree of frequency band; The second to seven groups comprise 12 electrodes respectively, and each electrode is corresponding with the frequency band of the C note corresponding to pitch 2-7 degree, C#Db note, D note, D#/Eb note, E note, F note, F#/Eb note, G note, G#/Ab note, A note, A#/Bb note, B note; 8th group comprises 7 electrodes, and each electrode C scale corresponding with pitch 8 degree is corresponding to the frequency band of F#/Eb scale.
2. as claimed in claim 1 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the electrode of first group is corresponding with the frequency band 59.9--63.6HZ of B note, pitch 1 degree.
3. as claimed in claim 2 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the electrode of first group is corresponding with the mid frequency 61.7HZ of B note, pitch 1 degree.
4. as claimed in claim 1 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, second group:
First electrode is corresponding with the frequency band 63.6--67.4HZ of C note, pitch 2 degree;
Second electrode is corresponding with the frequency band 67.4-71.2HZ of C#Db note, pitch 2 degree;
3rd electrode is corresponding with the frequency band 71.2 – 75.5HZ of D note, pitch 2 degree;
4th electrode is corresponding with the frequency band 75.6-80.0HZ of D#/Eb note, pitch 2 degree;
5th electrode is corresponding with the frequency band 80.0-84.8HZ of E note, pitch 2 degree;
6th electrode is corresponding with the frequency band 84.8-89.8HZ of F note, pitch 2 degree;
7th electrode is corresponding with the frequency band 89.8-95.1HZ of F#/Eb note, pitch 2 degree;
8th electrode is corresponding with the frequency band 95.1-100.9HZ of G note, pitch 2 degree;
9th electrode is corresponding with the frequency band 100.9-106.8HZ of G#/Ab note, pitch 2 degree;
Tenth electrode is corresponding with the frequency band 106.8-113.2HZ of A note, pitch 2 degree;
11 electrode is corresponding with the frequency band 113.2-119.9HZ of A#/Bb note, pitch 2 degree;
12 electrode is corresponding with the frequency band 119.9-127.1HZ of B note, pitch 2 degree.
5. as claimed in claim 4 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, second group:
First electrode is corresponding with the mid frequency 65.4HZ of C note, pitch 2 degree;
Second electrode is corresponding with the mid frequency 69.3HZ of C#Db note, pitch 2 degree;
3rd electrode is corresponding with the mid frequency 73.4HZ of D note, pitch 2 degree;
4th electrode is corresponding with the mid frequency 77.8HZ of D#/Eb note, pitch 2 degree;
5th electrode is corresponding with the mid frequency 82.4HZ of E note, pitch 2 degree;
6th electrode is corresponding with the mid frequency 87.3HZ of F note, pitch 2 degree;
7th electrode is corresponding with the mid frequency 92.4HZ of F#/Eb note, pitch 2 degree;
8th electrode is corresponding with the mid frequency 98.0HZ of G note, pitch 2 degree;
9th electrode is corresponding with the mid frequency 103.8HZ of G#/Ab note, pitch 2 degree;
Tenth electrode is corresponding with the mid frequency 110.0HZ of A note, pitch 2 degree;
11 electrode is corresponding with the mid frequency 116.5HZ of A#/Bb note, pitch 2 degree;
12 electrode is corresponding with the mid frequency 123.5HZ of B note, pitch 2 degree.
6. as claimed in claim 1 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the 3rd group:
First electrode is corresponding with the frequency band 127.1-134.5HZ of C note, pitch 3 degree;
Second electrode is corresponding with the frequency band 134.5-142.6HZ of C#Db note, pitch 3 degree;
3rd electrode is corresponding with the frequency band 142.6-151.0HZ of D note, pitch 3 degree;
4th electrode is corresponding with the frequency band 151.0-160.1HZ of D#/Eb note, pitch 3 degree;
5th electrode is corresponding with the frequency band 160.1-169.5HZ of E note, pitch 3 degree;
6th electrode is corresponding with the frequency band 169.5-179.7HZ of F note, pitch 3 degree;
7th electrode is corresponding with the frequency band 179.7-190.3HZ of F#/Eb note, pitch 3 degree;
8th electrode is corresponding with the frequency band 190.3-201.7HZ of G note, pitch 3 degree;
9th electrode is corresponding with the frequency band 201.7-213.6HZ of G#/Ab note, pitch 3 degree;
Tenth electrode is corresponding with the frequency band 213.6-226.4HZ of A note, pitch 3 degree;
11 electrode is corresponding with the frequency band 226.4-239.8HZ of A#/Bb note, pitch 3 degree;
12 electrode is corresponding with the frequency band 239.8-254.1HZ of B note, pitch 3 degree.
7. as claimed in claim 6 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the 3rd group:
First electrode is corresponding with the mid frequency 130.8HZ of C note, pitch 3 degree;
Second electrode is corresponding with the mid frequency 138.6HZ of C#Db note, pitch 3 degree;
3rd electrode is corresponding with the mid frequency 146.8HZ of D note, pitch 3 degree;
4th electrode is corresponding with the mid frequency 155.6HZ of D#/Eb note, pitch 3 degree;
5th electrode is corresponding with the mid frequency 164.8HZ of E note, pitch 3 degree;
6th electrode is corresponding with the mid frequency 174.6HZ of F note, pitch 3 degree;
7th electrode is corresponding with the mid frequency 185.0HZ of F#/Eb note, pitch 3 degree;
8th electrode is corresponding with the mid frequency 196.0HZ of G note, pitch 3 degree;
9th electrode is corresponding with the mid frequency 207.7HZ of G#/Ab note, pitch 3 degree;
Tenth electrode is corresponding with the mid frequency 220.0HZ of A note, pitch 3 degree;
11 electrode is corresponding with the mid frequency 233.1HZ of A#/Bb note, pitch 3 degree;
12 electrode is corresponding with the mid frequency 246.9HZ of B note, pitch 3 degree.
8. as claimed in claim 1 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the 4th group:
First electrode is corresponding with the frequency band 254.1-269.1HZ of C note, pitch 4 degree;
Second electrode is corresponding with the frequency band 269.1-285.2HZ of C#Db note, pitch 4 degree;
3rd electrode is corresponding with the frequency band 285.2-302.1HZ of D note, pitch 4 degree;
4th electrode is corresponding with the frequency band 302.1-320.2HZ of D#/Eb note, pitch 4 degree;
5th electrode is corresponding with the frequency band 320.2-339.1HZ of E note, pitch 4 degree;
6th electrode is corresponding with the frequency band 339.1-359.4HZ of F note, pitch 4 degree;
7th electrode is corresponding with the frequency band 359.4-380.6HZ of F#/Eb note, pitch 4 degree;
8th electrode is corresponding with the frequency band 380.6-403.4HZ of G note, pitch 4 degree;
9th electrode is corresponding with the frequency band 403.4-427.2HZ of G#/Ab note, pitch 4 degree;
Tenth electrode is corresponding with the frequency band 427.2-452.8HZ of A note, pitch 4 degree;
11 electrode is corresponding with the frequency band 452.8-479.5HZ of A#/Bb note, pitch 4 degree;
12 electrode is corresponding with the frequency band 479.5-508.2HZ of B note, pitch 4 degree.
9. as claimed in claim 8 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the 4th group:
First electrode is corresponding with the mid frequency 261.6HZ of C note, pitch 4 degree;
Second electrode is corresponding with the mid frequency 277.2HZ of C#Db note, pitch 4 degree;
3rd electrode is corresponding with the mid frequency 293.7HZ of D note, pitch 4 degree;
4th electrode is corresponding with the mid frequency 311.1HZ of D#/Eb note, pitch 4 degree;
5th electrode is corresponding with the mid frequency 329.6HZ of E note, pitch 4 degree;
6th electrode is corresponding with the mid frequency 349.2HZ of F note, pitch 4 degree;
7th electrode is corresponding with the mid frequency 370.0HZ of F#/Eb note, pitch 4 degree;
8th electrode is corresponding with the mid frequency 392.0HZ of G note, pitch 4 degree;
9th electrode is corresponding with the mid frequency 415.3HZ of G#/Ab note, pitch 4 degree;
Tenth electrode is corresponding with the mid frequency 440.0HZ of A note, pitch 4 degree;
11 electrode is corresponding with the mid frequency 466.2HZ of A#/Bb note, pitch 4 degree;
12 electrode is corresponding with the mid frequency 493.9HZ of B note, pitch 4 degree.
10. as claimed in claim 1 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the 5th group:
First electrode is corresponding with the frequency band 508.2-538.3HZ of C note, pitch 5 degree;
Second electrode is corresponding with the frequency band 538.3-570.5HZ of C#Db note, pitch 5 degree;
3rd electrode is corresponding with the frequency band 570.5-604.1HZ of D note, pitch 5 degree;
4th electrode is corresponding with the frequency band 604.1-640.5HZ of D#/Eb note, pitch 5 degree;
5th electrode is corresponding with the frequency band 640.5-678.1HZ of E note, pitch 5 degree;
6th electrode is corresponding with the frequency band 678.1-718.9HZ of F note, pitch 5 degree;
7th electrode is corresponding with the frequency band 718.9---761.1HZ of F#/Eb note, pitch 5 degree;
8th electrode is corresponding with the frequency band 761.1---806.9HZ of G note, pitch 5 degree;
9th electrode is corresponding with the frequency band 806.9---854.3HZ of G#/Ab note, pitch 5 degree;
Tenth electrode is corresponding with the frequency band 854.3-905.7HZ of A note, pitch 5 degree;
11 electrode is corresponding with the frequency band 905.7-958.9HZ of A#/Bb note, pitch 5 degree;
12 electrode is corresponding with the frequency band 958.9-1016.7HZ of B note, pitch 5 degree.
11. as claimed in claim 10 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the 5th group:
First electrode is corresponding with the mid frequency 523.3HZ of C note, pitch 5 degree;
Second electrode is corresponding with the mid frequency 554.4HZ of C#Db note, pitch 5 degree;
3rd electrode is corresponding with the mid frequency 587.3HZ of D note, pitch 5 degree;
4th electrode is corresponding with the mid frequency 622.3HZ of D#/Eb note, pitch 5 degree;
5th electrode is corresponding with the mid frequency 659.3HZ of E note, pitch 5 degree;
6th electrode is corresponding with the mid frequency 698.5HZ of F note, pitch 5 degree;
7th electrode is corresponding with the mid frequency 740.0HZ of F#/Eb note, pitch 5 degree;
8th electrode is corresponding with the mid frequency 784.0HZ of G note, pitch 5 degree;
9th electrode is corresponding with the mid frequency 830.6HZ of G#/Ab note, pitch 5 degree;
Tenth electrode is corresponding with the mid frequency 880.0HZ of A note, pitch 5 degree;
11 electrode is corresponding with the mid frequency 932.3HZ of A#/Bb note, pitch 5 degree;
12 electrode is corresponding with the mid frequency 987.8HZ of B note, pitch 5 degree.
12. as claimed in claim 1 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the 6th group:
First electrode is corresponding with the frequency band 1016.7-1076.3HZ of C note, pitch 6 degree;
Second electrode is corresponding with the frequency band 1076.3-1141.1HZ of C#Db note, pitch 6 degree;
3rd electrode is corresponding with the frequency band 1141.1-1208.3HZ of D note, pitch 6 degree;
4th electrode is corresponding with the frequency band 1208.3-1280.7HZ of D#/Eb note, pitch 6 degree;
5th electrode is corresponding with the frequency band 1280.7-1356.3HZ of E note, pitch 6 degree;
6th electrode is corresponding with the frequency band 1356.3-1437.5HZ of F note, pitch 6 degree;
7th electrode is corresponding with the frequency band 1437.5-1522.5HZ of F#/Eb note, pitch 6 degree;
8th electrode is corresponding with the frequency band 1522.5-1613.5HZ of G note, pitch 6 degree;
9th electrode is corresponding with the frequency band 1613.5-1708.9HZ of G#/Ab note, pitch 6 degree;
Tenth electrode is corresponding with the frequency band 1708.9-1811.1HZ of A note, pitch 6 degree;
11 electrode is corresponding with the frequency band 1811.1-1918.3HZ of A#/Bb note, pitch 6 degree;
12 electrode is corresponding with the frequency band 1918.3-2032.7HZ of B note, pitch 6 degree.
13. as claimed in claim 12 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the 6th group: first electrode is corresponding with the frequency band 1046.5HZ of C note, pitch 6 degree;
Second electrode is corresponding with the frequency band 1108.7HZ of C#Db note, pitch 6 degree;
3rd electrode is corresponding with the frequency band 1174.7HZ of D note, pitch 6 degree;
4th electrode is corresponding with the frequency band 1244.5HZ of D#/Eb note, pitch 6 degree; 5th electrode is corresponding with the frequency band 1318.5HZ of E note, pitch 6 degree;
6th electrode is corresponding with the frequency band 1396.9HZ of F note, pitch 6 degree;
7th electrode is corresponding with the frequency band 1480.0HZ of F#/Eb note, pitch 6 degree;
8th electrode is corresponding with the frequency band 1568.0HZ of G note, pitch 6 degree;
9th electrode is corresponding with the frequency band 1661.2HZ of G#/Ab note, pitch 6 degree;
Tenth electrode is corresponding with the frequency band 1760.0HZ of A note, pitch 6 degree;
11 electrode is corresponding with the frequency band 1864.7HZ of A#/Bb note, pitch 6 degree;
12 electrode is corresponding with the frequency band 1975.5HZ of B note, pitch 6 degree.
14. as claimed in claim 1 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the 7th group:
First electrode is corresponding with the frequency band 2032.7-2153.3HZ of C note, pitch 7 degree;
Second electrode is corresponding with the frequency band 2153.3-2281.7HZ of C#Db note, pitch 7 degree;
3rd electrode is corresponding with the frequency band 2281.7-2416.9HZ of D note, pitch 7 degree;
4th electrode is corresponding with the frequency band 2416.9---2561.1HZ of D#/Eb note, pitch 7 degree;
5th electrode is corresponding with the frequency band 2561.1-2712.9HZ of E note, pitch 7 degree;
6th electrode is corresponding with the frequency band 2712.9-2874.7HZ of F note, pitch 7 degree;
7th electrode is corresponding with the frequency band 2874.7-3045.3HZ of F#/Eb note, pitch 7 degree;
8th electrode is corresponding with the frequency band 3045.3-3226.7HZ of G note, pitch 7 degree;
9th electrode is corresponding with the frequency band 3226.7-3418.1HZ of G#/Ab note, pitch 7 degree;
Tenth electrode is corresponding with the frequency band 3418.1-3621.9HZ of A note, pitch 7 degree;
11 electrode is corresponding with the frequency band 3621.9-3836.7HZ of A#/Bb note, pitch 7 degree;
12 electrode is corresponding with the frequency band 3836.7-4065.5HZ of B note, pitch 7 degree.
15. as claimed in claim 14 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the 7th group:
First electrode is corresponding with the mid frequency 2093.0HZ of C note, pitch 7 degree;
Second electrode is corresponding with the mid frequency 2217.5HZ of C#Db note, pitch 7 degree;
3rd electrode is corresponding with the mid frequency 2349.3HZ of D note, pitch 7 degree;
4th electrode is corresponding with the mid frequency 2489.0HZ of D#/Eb note, pitch 7 degree;
5th electrode is corresponding with the mid frequency 2637.0HZ of E note, pitch 7 degree;
6th electrode is corresponding with the mid frequency 2793.8HZ of F note, pitch 7 degree;
7th electrode is corresponding with the mid frequency 2960.0HZ of F#/Eb note, pitch 7 degree;
8th electrode is corresponding with the mid frequency 3136.0HZ of G note, pitch 7 degree;
9th electrode is corresponding with the mid frequency 3322.4HZ of G#/Ab note, pitch 7 degree;
Tenth electrode is corresponding with the mid frequency 3520.0HZ of A note, pitch 7 degree;
11 electrode is corresponding with the mid frequency 3729.3HZ of A#/Bb note, pitch 7 degree;
12 electrode is corresponding with the mid frequency 3951.1HZ of B note, pitch 7 degree.
16. as claimed in claim 1 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the 8th group:
First electrode is corresponding with the frequency band 4065.5-4306.5HZ of C note, pitch 8 degree;
Second electrode is corresponding with the frequency band 4306.5-4563.3HZ of C#Db note, pitch 8 degree;
3rd electrode is corresponding with the frequency band 4563.3-4833.9HZ of D note, pitch 8 degree;
4th electrode is corresponding with the frequency band 4833.9-5122.1HZ of D#/Eb note, pitch 8 degree;
5th electrode is corresponding with the frequency band 5122.1-5425.9HZ of E note, pitch 8 degree;
6th electrode is corresponding with the frequency band 5425.9-5749.5HZ of F note, pitch 8 degree;
7th electrode is corresponding with the frequency band 5749.5-6090.3HZ of F#/Eb note, pitch 8 degree.
17. as claimed in claim 16 can artificial cochlea's acoustic nerve conducting electrode array of perception music rhythm, it is characterized in that, the 8th group:
First electrode is corresponding with the mid frequency 4186.0HZ of C note, pitch 8 degree;
Second electrode is corresponding with the mid frequency 4434.9HZ of C#Db note, pitch 8 degree;
3rd electrode is corresponding with the mid frequency 4698.6HZ of D note, pitch 8 degree;
4th electrode is corresponding with the mid frequency 4978.0HZ of D#/Eb note, pitch 8 degree;
5th electrode is corresponding with the mid frequency 5274.0HZ of E note, pitch 8 degree;
6th electrode is corresponding with the mid frequency 5587.7HZ of F note, pitch 8 degree;
7th electrode is corresponding with the mid frequency 5919.9HZ of F#/Eb note, pitch 8 degree.
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