CN2108976U - Dynamics controller for electromic piano - Google Patents

Dynamics controller for electromic piano Download PDF

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Publication number
CN2108976U
CN2108976U CN 91231558 CN91231558U CN2108976U CN 2108976 U CN2108976 U CN 2108976U CN 91231558 CN91231558 CN 91231558 CN 91231558 U CN91231558 U CN 91231558U CN 2108976 U CN2108976 U CN 2108976U
Authority
CN
China
Prior art keywords
dynamics
resistance
sound
triode
circuit
Prior art date
Application number
CN 91231558
Other languages
Chinese (zh)
Inventor
李文佑
吴亚明
张芒
唐宗亮
Original Assignee
青岛市电子乐器工业公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 青岛市电子乐器工业公司 filed Critical 青岛市电子乐器工业公司
Priority to CN 91231558 priority Critical patent/CN2108976U/en
Publication of CN2108976U publication Critical patent/CN2108976U/en

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Abstract

The utility model relates to a strength controller for electronic pianos. The utility model is designed for overcoming the defect that the volume of electronic pianos can not be controlled by strength of playing. Strength of playing is changed into electric signals by a key strength switch of an electronic piano, and a strength detection circuit. The signals are output by a sound-head forming circuit to control the volume. A stagnant tone control circuit and a slide tone control circuit are connected with the sound-head forming circuit, a strength detection circuit and a slide tone pedal, and form stagnant tone and slide tone effects of a piano. The utility model is used for electronic pianos, can control volume by strength of playing electronic-piano keys, and enriches the expressive force of an electronic piano.

Description

The utility model relates to a kind of dynamics controller, especially for the dynamics controller of pianotron.
At present, mellotron is widely adopted, and it can imitate the tone color of various classic musical instruments, compared with classic musical instrument in light weight, do not need to transfer many special benefits such as qin, cost be low, easy to carry.But the volume of mellotron can only control by regulating volume button, can not control by the dynamics that finger is played.The expressive force of mellotron is very limited like this, and the player can't be with emotion to remove to play music score according to own understanding to music score, and the various emotions of putting down in writing in the music score also can't go to express by mellotron.Therefore, mellotron only limits to general public place of entertainment and uses, and does not appeal to refined taste.
The utility model is a kind of pianotron dynamics controller that designs for the shortcoming that overcomes above-mentioned prior art, and it is handled the signal from key by the dynamics mimic channel, and the signal of output is changed with the dynamics size that the player plays key.
Technical solution of the present utility model is, a kind of pianotron dynamics controller with dynamics mimic channel, and its special character is that the dynamics mimic channel comprises:
Pianotron key dynamics K switch, its common port a is connected with the dynamics testing circuit, and its normally closed contact b is connected with power supply, and its normally opened contact c becomes circuit to be connected with the sound capitiform.
The dynamics testing circuit, it is connected with the common port a of pianotron key dynamics K switch.It changes the dynamics of playing into electric signal.
The sound capitiform becomes circuit, and its input end is connected with the normally opened contact c of pianotron key dynamics K switch, and output terminal is connected with piano sound shape door and musical alphabet circuit.It produces the sound head signal of piano.
Stagnant sound, tenuto control circuit, it becomes circuit, dynamics testing circuit to be connected with Sustain with the sound capitiform.It forms the stagnant sound and the tenuto effect of piano.
The utility model can change the volume of pianotron with the dynamics of playing owing to adopted the dynamics mimic channel, thereby makes pianotron simulation mechanical piano more true to nature, has enriched the expressive force of pianotron.
Below in conjunction with accompanying drawing an embodiment of the present utility model is described in detail.
Fig. 1 is the circuit block diagram of pianotron.
Fig. 2 is the circuit block diagram of the dynamics mimic channel of present embodiment, and as Figure of abstract.
Fig. 3 is the circuit diagram of the dynamics mimic channel of present embodiment.
As shown in Figure 1, pianotron changes the dynamics of keyboard play into by pianotron dynamics controller the size of electric signal control volume, this signal input piano sound shape door and musical alphabet circuit produce the pitch of musical alphabet of corresponding key and the envelope of piano sound, import the tone color treatment circuit then and form piano sound, carry out power amplification through power amplification circuit again, drive the loudspeaker sounding.Pedal is used for tenuto and off beat.
As shown in Figure 2, dynamics mimic channel of the present utility model comprises: pianotron key dynamics K switch, dynamics testing circuit, sound capitiform become circuit and stagnant sound, tenuto control circuit.
As shown in Figure 3, the common port a of pianotron key dynamics K switch and capacitor C 1An end connect, normally closed contact b is connected with positive source, normally opened contact c and resistance R 5An end connect.When not playing, common port a is connected with normally closed contact b, and when key was pressed, common port a was connected with normally opened contact c.The dynamics testing circuit is by resistance R 1, R 2, R 3, capacitor C 1With stabilivolt D 1Form.Resistance R 2With stabilivolt D 1In parallel.Resistance R 1One end is connected resistance R with the common port a of pianotron key dynamics K switch 1The other end and stabilivolt D 1Negative pole connect stabilivolt D 1Positive pole and resistance R 3An end connect resistance R 3Other end ground connection.Capacitor C 1An end be connected capacitor C with the common port a of pianotron key dynamics K switch 1The other end and stabilivolt D 1Positive pole connect.The sound capitiform becomes circuit by resistance R 5, R 7, capacitor C 2With triode BG 1Form.Resistance R 5An end be connected resistance R with the normally opened contact C of pianotron key dynamics K switch 5The other end and triode BG 1Base stage connect.Triode BG 1Collector be connected triode BG with positive source 1Emitter and resistance R 7An end connect resistance R 7Other end d and capacitor C 2An end connect capacitor C 2Other end ground connection.The d point is an output terminal, is connected with piano sound shape door and musical alphabet circuit.Stagnate sound, tenuto control circuit by resistance R 4, R 6, diode D 2, D 3, stabilivolt D 4With triode BG 2Form.Resistance R 6An end and triode BG 1Emitter connect resistance R 6The other end and diode D 2Positive pole connect diode D 2Negative pole and diode D 3Positive pole connect diode D 3Negative pole and stabilivolt D 4Negative pole connect stabilivolt D 4Plus earth.Resistance R 4An end and stabilivolt D 1Positive pole connect resistance R 4The other end and triode BG 2Base stage connect triode BG 2Collector and diode D 2Negative pole connect triode BG 2Emitter be connected with Sustain.
When key is not pressed, 2 connections of a, b, power supply is to capacitor C 1Charging is full of capacitor.Charge circuit is power supply → b → a → c 1→ R 3→ ground.Press down in the process when key, a, b disconnect, capacitor C 1Begin discharge, discharge loop is C 1Positive pole → R 1→ D 1∥ R 2∥ C 1Negative pole.When key is pressed 2 contacts of a, c down, capacitor C 1On remaining magnitude of voltage deliver to triode BG 1Base stage, make triode BG 1Conducting.Because capacitor C 1Go up remaining voltage and press the difference of used time when 2 contacts of a, c and difference with key.The speed of promptly playing key is fast, then capacitor C 1On remaining voltage height.Otherwise, capacitor C then 1On voltage low.Deliver to triode BG 1Base stage on the height of voltage, just formed the detection of dynamics.If key continues to press, capacitor C 1Continue discharge, up to capacitor C 1The voltage at two ends is less than stabilivolt D 1The voltage stabilizing value time, capacitor C 1Discharge loop become C 1Positive pole → R 1→ R 2→ C 1Negative pole.Because resistance R 2Bigger, capacitor C 1The velocity of discharge slow down.Be capacitor C 1Discharge divide two stages.Phase one, capacitor C 1On voltage greater than stabilivolt D 1The voltage stabilizing value, discharge is very fast.Subordinate phase, capacitor C 1On voltage less than stabilivolt D 1The voltage stabilizing value, it is slower to discharge.This process makes capacitor C 1The voltage at two ends is sharply reduced by height, slowly reduces then, is reflected to triode BG 1Base stage on just formed the tenuto effect.
Press when making a, c contact at 2 when key, the current potential that a is ordered is added to triode BG 1Base stage, make triode BG 1Conducting.Power supply is by triode BG 1Collector, emitter, resistance R 7To capacitor C 2Charging.The current potential that d is ordered delivers to piano sound shape door and the musical alphabet circuit forms piano sound head, the size of control volume.Capacitor C 1The size of the voltage at two ends is by triode BG 1Base stage control the size of its emitter current, thereby change capacitor C 2The voltage at two ends, the size of control volume.
When Sustain depresses, triode BG 2Emitter unsettled, capacitor C 2Pass through resistance R 7, resistance R 6, diode D 2, diode D 3With stabilivolt D 4Slowly discharge regularly.Simultaneously, capacitor C 2Piano sound shape door and musical alphabet circuit are delivered in the variation of the voltage at two ends, form the tenuto of piano.When Sustain does not depress, triode BG 2Grounded emitter, and key unclamps, and recovers 2 connections of a, b.By resistance R 1, resistance R 2, stabilivolt D 1And resistance R 3Dividing potential drop is at R 3On the voltage that obtains make triode BG 2Saturation conduction.Capacitor C 2Pass through resistance R 7, resistance R 6, diode D 2With triode BG 2Discharge rapidly.Simultaneously, capacitor C 2The change in voltage at two ends is delivered to piano sound shape door and musical alphabet circuit, forms the stagnant audio fruit of piano.

Claims (4)

1, a kind of pianotron dynamics controller with dynamics mimic channel is characterized in that the dynamics mimic channel comprises:
Pianotron key dynamics K switch, its common port a is connected with the dynamics testing circuit, and its normally closed contact b is connected with power supply, and its normally opened contact c becomes circuit to be connected with the sound capitiform;
The dynamics testing circuit, it is connected with the common port a of pianotron key dynamics K switch, and it changes the dynamics of playing into electric signal;
The sound capitiform becomes circuit, and its input end is connected with the normally opened contact c of pianotron key dynamics K switch, and output terminal is connected with piano sound shape door and musical alphabet circuit, and it produces the sound head signal of piano;
Stagnant sound, tenuto control circuit, it becomes circuit, dynamics testing circuit to be connected with Sustain with the sound capitiform, and its forms the stagnant sound and the tenuto effect of piano.
2, according to the described a kind of pianotron dynamics controller of claim 1, it is characterized in that described dynamics testing circuit is by resistance R with dynamics mimic channel 1, R 2, R 3, capacitor C 1With stabilivolt D 1Form resistance R 2With stabilivolt D 1Parallel connection, resistance R 1One end is connected resistance R with the common port a of pianotron key dynamics K switch 1The other end and stabilivolt D 1Negative pole connect stabilivolt D 1Positive pole and resistance R 3An end connect resistance R 3Other end ground connection, capacitor C 1An end be connected capacitor C with the common port a of pianotron key dynamics K switch 1The other end and stabilivolt D 1Positive pole connect.
3, according to claim 1 or 2 described a kind of pianotron dynamics controllers, it is characterized in that described sound capitiform becomes circuit by resistance R with dynamics mimic channel 5, R 7, capacitor C 2With triode BG 1Form resistance R 5An end be connected resistance R with the normally opened contact C of pianotron key dynamics K switch 5The other end and triode BG 1Base stage connect triode BG 1Collector be connected triode BG with positive source 1Emitter and resistance R 7An end connect resistance R 7Other end d and capacitor C 2An end connect capacitor C 2Other end ground connection, the d point is an output terminal, is connected with piano sound shape door and musical alphabet circuit.
4, according to the described a kind of pianotron dynamics controller of claim 3, it is characterized in that described stagnant sound, tenuto control circuit are by resistance R with dynamics mimic channel 4, R 6, diode D 2, D 3, stabilivolt D 4With triode BG 2Form resistance R 6An end and triode BG 1Emitter connect resistance R 6The other end and diode D 2Positive pole connect diode D 2Negative pole and diode D 3Positive pole connect diode D 3Negative pole and stabilivolt D 4Negative pole connect stabilivolt D 4Plus earth, resistance R 4An end and stabilivolt D 1Positive pole connect resistance R 4The other end and triode BG 2Base stage connect triode BG 2Collector and diode D 2Negative pole connect triode BG 2Emitter be connected with Sustain.
CN 91231558 1991-11-30 1991-11-30 Dynamics controller for electromic piano CN2108976U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 91231558 CN2108976U (en) 1991-11-30 1991-11-30 Dynamics controller for electromic piano

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 91231558 CN2108976U (en) 1991-11-30 1991-11-30 Dynamics controller for electromic piano

Publications (1)

Publication Number Publication Date
CN2108976U true CN2108976U (en) 1992-07-01

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Application Number Title Priority Date Filing Date
CN 91231558 CN2108976U (en) 1991-11-30 1991-11-30 Dynamics controller for electromic piano

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101515451B (en) * 2008-02-19 2011-11-16 雅马哈株式会社 Pedal control apparatus of electronic keyboard musical instrument

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101515451B (en) * 2008-02-19 2011-11-16 雅马哈株式会社 Pedal control apparatus of electronic keyboard musical instrument

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