CN88201249U - Imitating electronic piano - Google Patents
Imitating electronic piano Download PDFInfo
- Publication number
- CN88201249U CN88201249U CN 88201249 CN88201249U CN88201249U CN 88201249 U CN88201249 U CN 88201249U CN 88201249 CN88201249 CN 88201249 CN 88201249 U CN88201249 U CN 88201249U CN 88201249 U CN88201249 U CN 88201249U
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- CN
- China
- Prior art keywords
- piano
- musical sound
- tone color
- analog electrical
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses an imitating electronic piano, belonging to an electronic musical instrument and used for simulating all characteristic of the piano musical tones. The adoptions of a key speed and strength simulator and a tone color distributed processing circuit solve the full varying problem of the tone type and tone color, so the musical tone characteristic of the imitating electronic piano is identical to a mechanical piano.
Description
The analog electrical piano is used in the electronic musical instrument, is used to simulate the pianotron of the various characteristics of piano musical sound.
Present pianotron can only be in the characteristic of simulating the piano musical sound aspect figure, the tone color regularly.The dynamics of finger button, speed speed and abundant tone color change, and show to come out.
The purpose of analog electrical piano is the various characteristics of simulation mechanical piano musical sound, dynamics, the velocity magnitude of finger button are directly proportional with loudness of a sound, and with how much being directly proportional of the overtone that comprises in the musical sound, the speed of button is big more, it is fast more that musical sound disappears, thereby replace mechanical piano.
The range of piano is generally from A
2～C
588 sounds are arranged, from the bass to the high pitch, be arranged as f from low to high by its musical sound predominant frequency
1～f
88Geometric Sequence, f
1=27.5HZf
N+1/ f
n=
, constitute semitone at a distance of the sound of two frequencies.The tone color of piano (tonequality), it is decided by the quantity and the intensity thereof of the overtone that comprised in this musical sound, homophonic (overtone) is many more, tone color is beautiful more, with reference to " temperament of piano and maintenance " and " electronic musical instrument ", the analog electrical piano removes button analogue means (hitting the string simulation), outside the tone color circuit, all the medium-to-high grade mellotron with present is identical for other.
Button analogue means: adopt mechanical piano keyboard and its hammered string instrument structure for high-grade analog electrical piano, but it hits and is packed with block length side magnet body Fig. 1 (1) tup (wooden) (2) magnet end face (3) on " string " tup and hits " string " direction, when the finger button, tup is even had no progeny by the hammered string instrument structure and is hit " string "---sectioned coil, produce induced voltage at the coil two ends, the speed of magnet sectioned coil, be exactly the speed that tup hits string, the speed of magnet sectioned coil is big more, the induced voltage that produces at the coil two ends is also just big more, promptly points key scroll, the size of dynamics is directly proportional with coil both end voltage size.For middle-grade analog electrical piano, then adopt the keyboard of celesta simply to hit sheet mechanism (plastic products) hammer-shaped also as Fig. 1 with it, the induced voltage size that produces at the coil two ends behind the magnet sectioned coil also represents to point the dynamics and the velocity magnitude of button.
For the low-grade analog electrical piano of popular style, can adopt standard steel piano key board (wooden) or electronic organ keyboard, do not hit string and connect breaking mechanism, the magnet cartridge of sectioned coil is in the bottom of button.
Magnet shape such as Fig. 2, the rectangular parallelepiped of a * b * c, coil section shape such as Fig. 3.A ' * b ' rectangle, a ' is a bit larger tham a, b ' is a bit larger tham b, during the magnet sectioned coil, the magnet end face is parallel with the coil end face, at a distance of about 1～2mm, magnet is that the magnet end face is among the coil-end face along the position of hitting the maximum displacement state of " string " direction, the magnet sectioned coil, the magnetic flux change in coil is as Fig. 4.At coil two ends induced voltage such as Fig. 5, t
1=b/v
1, v
1Expression magnet sectioned coil speed, totally 88 of coils are as Fig. 6.(1) link stopper (aluminium, copper) (2) hammer buffering, the string noise is hit in elimination, (3) printed panel (4) coil, the magnet end face pole reversal on the adjacent tup makes it to be independent of each other, so adjacent coil is the reverse or tap transposing ground connection of coiled also, the size of magnet, a is smaller as far as possible, makes it to be independent of each other, b is big as far as possible, makes the time t of magnet sectioned coil
1As far as possible long, iron content metallic substance not in the coil or on every side, so as not to when the magnet sectioned coil, produce the magnetic force impedance, the coil both end voltage is handled through amplifier, as Fig. 7.A point voltage such as Fig. 8.B point voltage such as Fig. 9.Change the magnet shape and can change b point waveform.(musical sound sound shape) changes the coil section shape and also can change b point waveform.When magnet begins sectioned coil, the waveform that b is ordered (after the differential processing) make the of short duration rapid discharge in capacitor C two ends, thus make singly-bound legato and trill (when stepping on the long step) that the musical sound intensity when hitting string is not accumulated and instantaneous noise reduction.
Even the unexpected vanishing of noise reduction amplitude, long are to allow a certain musical sound Lock-out, muffling circuit such as Figure 10.k
1, k
2Oxide-semiconductor control transistors saturated with end, the rapid discharge of control C electric capacity reaches the purpose of noise reduction.For high-grade analog electrical piano, because of it adopts the hammered string instrument structure of mechanical piano, each press button mechanism has the only motion of sound wood, thereby the sound that ends that ends on the sound wood is controlled microswitch k
1, make triode saturated and end, long step control k
2, forte step mechanism is the same with mechanical piano, for low and middle-grade analog electrical pianos, because of not having silencer mechanism motion, silence switch structure k
1, as Figure 11, (1)-key, (2)-k
1Contact last slice (3) k
1Sheet under the contact.
The tone color circuit, the piano musical sound is a complex tone, its frequency spectrum Figure 12, the time domain of each frequency component changes as Figure 13.Tone color changes abundant, be that tone filter can't form, the quality of tone color is meant the error degree of what and each overtone of overtone, to high-grade analog electrical piano for solving the error of higher overtone, requirement has abundant source of sound, for each musical sound correspondingly overtone frequency 2f should be arranged all
n3f
n, 3/2 f
n, 4f
n8f
nDeng thus source of sound and sound source signal treatment circuit a lot.
For each enough strong musical sound of middle-grade analog electrical piano by 12 pure sinusoid sound f that changes in amplitude is different
n, 2f
n, 3f
n, 3/2 f
n, 4f
n, 4/3 f
n, 5f
n, 5/4 f
n, 5/3 f
n, 5/2 f
n, 6f
n, 6/5 f
n, approximate by f
n, f
N+12, f
N+19, f
N+7, f
N+24, f
N+5, f
N+28, f
N+4, f
N+9, f
N+16, f
N+31, f
N+3Expression is for the sound such as the C of treble
5(f
88) also should contain corresponding higher overtone, adapting to the tone color needs, thereby the high pitch of source of sound is 6f
88≈ f
88+31=f
119For the popular analog electrical piano of low grade, each enough strong musical sound by 10 with the different pure sinusoid sound f of interior changes in amplitude
n, 2f
n3f
n, 3/2 f
n, 4f
n, 4/3 f
n, 5f
n, 5/4 f
n, 5/3 f
n, 5/2 f
nForm as Figure 12 A
2Overtone 2f in the musical sound
1, 3f
1, 3/2 f
1, 4f
1, 4/3 f
1, 5f
1, 5/4 f
1, 5/3 f
1, 5/2 f
1Approximate by f
13, f
20, f
8, f
25, f
6, f
29, f
5, f
10, f
17Deng expression, less because of its source of sound or source of sound treatment circuit at treble, musical sound is high more, and tone color is poor more, C
5The musical sound tone color is the poorest (because of Gao Yuan is f
88, C
5Musical sound does not contain overtone) A
2Musical sound key scroll, dynamics simulation, tone color distribution process circuit such as Figure 14, the R in the amplifier adding circuit are (than R about 100 Europe
1To R
10Much smaller), R
1: R
2: R
3: R
4: R
5: R
6: R
7: R
8: R
9: R
10Approximate the A among Figure 12
F1: A
F5: A
F6: A
F8: A
F10: A
F13: A
F17: A
F20: A
F25: A
F29, button A
2Hammer on magnet sectioned coil L
1Through amplifier A
1Deng processing, on capacitor C, form the figure signal that changes, deliver to A respectively
' 1, A
' 5, A
' 6, A
' 8, A
' 10, A
' 13, A
' 17, A
' 20, A
' 25, A
' 29Amplifier adding circuits such as (amplifier adopt general four high guaily unit) makes the A on the capacitor C
2The musical sound figure be processed into frequency spectrum musical sound distribution figure, the figure of delivering to corresponding frequencies forms circuit, what adopt among Figure 14 is that triode figure formation circuit also can adopt the diode switch figure to form circuit etc., frequency spectrum musical sound component after figure forms processing of circuit mixes amplification respectively after 88 buffer amplifiers amplify, power amplifier etc. are sent into the musical sound that loudspeaker is low-grade analog electrical piano.
Claims (3)
1, the analog electrical piano is used in the electronic musical instrument, simulation mechanical piano musical sound various characteristics, dynamics, velocity simulate device and tone color distribution process circuit except the finger button, all the other signal processing circuits are all identical with the hyundai electronics qin, principal character of the present utility model is to simulate the speed and strength that hits string with the induced voltage that the rectangular parallelepiped magnet sectioned coil that embeds on the hammer is produced, simulate piano musical sound tone color with overtone distribution process circuit, it is abundant that thereby the musical sound tone color that makes the analog electrical piano changes, can be beautiful with similar high, medium and low shelves piano musical sound ratio.
2,, it is characterized in that speed, the dynamics treating apparatus of button according to the described simulation electronic piano of claim 1.
3, it is characterized in that tone color distribution process circuit according to the described analog electrical piano of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88201249 CN88201249U (en) | 1988-02-08 | 1988-02-08 | Imitating electronic piano |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88201249 CN88201249U (en) | 1988-02-08 | 1988-02-08 | Imitating electronic piano |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88201249U true CN88201249U (en) | 1988-11-30 |
Family
ID=4836496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88201249 Withdrawn CN88201249U (en) | 1988-02-08 | 1988-02-08 | Imitating electronic piano |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88201249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104205205A (en) * | 2012-03-29 | 2014-12-10 | 株式会社河合乐器制作所 | Electronic keyboard musical instrument |
-
1988
- 1988-02-08 CN CN 88201249 patent/CN88201249U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104205205A (en) * | 2012-03-29 | 2014-12-10 | 株式会社河合乐器制作所 | Electronic keyboard musical instrument |
| CN104205205B (en) * | 2012-03-29 | 2016-09-07 | 株式会社河合乐器制作所 | Electric keyboard instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |