JPS5922956B2 - Start regulation device for automatic rhythm performance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for regulating the start time of a rhythm to be played in an automatic rhythm playing device.

At the same time as this application, the applicant has determined that when the rhythm of the automatic rhythm playing device starts, the player can touch the touch plate disposed on the automatic rhythm playing device according to the desired tempo interval. In an automatic rhythm playing device that enables rhythm playing at a tempo that has a tempo at which the player touches the touch plate as desired by the player,
An application has been filed for a starting device for an automatic rhythm playing device in which even if the touch plate is touched for four or more beats, the tempo is set at the interval between the second and third beats, and the rhythm performance starts as soon as the fourth beat is touched. . However, when such an automatic rhythm performance device is used to perform in concert with other musical instruments such as an electronic organ, for example,
The organ player touches the touch plate with his left hand to set the rhythm tempo, so at the start of the rhythm performance, only the right hand plays the organ, and from the first beat of the played rhythm, the organ must be played with both hands. was difficult.

The present invention further improves the above-mentioned drawbacks, and sets the rhythm tempo at the interval between the second and third beats when the touch plate is touched as described above, but the tempo of the rhythm is set at the interval between the second and third beats when the touch plate is touched. To provide a device that enables an organ player to perform with both hands from the beginning even when performing in concert with an electronic organ etc. by regulating the start time of rhythm performance so that the rhythm performance starts from . It is.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

Monostable multivibrator M, M, on touch plate 1
'M, and connect the monostable multivibrator M7M
A capacitor Cl and a grounded resistor R are connected in series to one side of M, ', and M2 of a retrigger type monostable multivibrator M2M2' is connected to the midpoint of the connection, and M2 of the retrigger type monostable multivibrator M2M2' is connected in series to the other side. A grounded resistor R2 is connected through a connected capacitor C2 and a diode D, and flip-flops F, F,', F2F2' are connected in cascade in two stages at the midpoint between the diode D and the resistor R2. Flip-flops F, F,' are connected.

The above retriker type monostable multivibrator M, M2'
A capacitor C and a grounded resistor R are connected in series to M2', and flip-flops F and Fl are connected at the midpoint of the connection.
'F1' of the flip-flop F2 and F2' of the flip-flop F2F2' are connected through diodes D2 and D3, respectively, and the flip-flop F3F3 is connected through the diode D.
Connect F3' of '.

Here, the above retriever type monostable multivibrator M
The width of the metastable state of 2M2', that is, the width of the output pulse of the retrigger type monostable multivibrator M2M2', is set to be slightly smaller than the interval between the first and second beats of the slowest possible rhythm tempo. so that it becomes longer,
The time constant of the retriever type monostable multivibrator M2M2' is determined, and for consecutive touches on the touch plate that do not exceed this time constant, the monostable multivibrator M2M2' is re-excited. The retrigger type monostable multivibrator M2M,' is configured to maintain the state of the first beat. F, F2' of the above flip-flops F, Fl', F2F2' are commonly connected via diodes D5, D6 and connected to the power supply +B, and a capacitor C4 and a grounded resistor R4 are connected. F3' of the flip-flops F and F3' is connected to the midpoint via a diode D.

Diodes D8 and D are connected in series to F3 of the flip-flop F3F3' and connected to the power supply +B,
Connected to M2' of the retriker type monostable multivibrators M and M2' through the diode DlO, and connected to the series-connected capacitor C2 and diode D at the midpoint of the connection between the diodes D8 and D. Connect the points of the flip-flops F and F to ground through the resistors R,
, ', F2 F2' are commonly connected through diodes D, l, and Dl2, and one end is connected to the power supply +B.
At the same time, an oscillator 2, a tempo setting voltage synthesis circuit 3, a tempo regulating oscillator 4, and a frequency divider 5 are connected in sequence to the other end, and the frequency divider 5 is connected to the F of the flip-flop FlFl'.
Connect to 1.

A power supply +B is connected to F2' of the flip-flop F2F2' through diodes D and 3, and the up-set circuit 6 and the tempo regulation oscillator 4 are connected to the up-set circuit 6, the frequency divider 5, the gate circuit 7, matrix 8, rhythm selection switch 9, sound source 10, amplifier 11,
Connect the speakers 12 in sequence.

F1' of the flip-flop FlF1', F2F2'
.

Next, the operating state of the present invention will be described.

First, when you touch the touch play opening for the first beat, it will always be 0N.
Monostable multivibrator M, M set in the state
Since M of l' instantly becomes 0FF state, M1' becomes 0.
The state becomes N, and a negative pulse is generated at point A on the drawing.

The negative pulse inverts M2 of the retriker type monostable multivibrator M2M2' from the 0N state to the 0FF state, so that M2' also inverts from the 0FF state to the ON state. Retriker type monostable multivibrator M2M
When M2' of 2' becomes 0N, a negative pulse is generated at point B on the drawing, and diodes D2, D3, and D4 become conductive, so that regardless of the pulse generated at point C on the drawing, flip-flop FlFl',F2F2',F3F,'
F,',F2', and F3' become 0FF, and the device of the present invention is set. At this time, flip-flop F,
The states of F,', F2F2', F, and F3' are as shown in FIG. Since the retriker type monostable multivibrator M2M27 is set as described above,
Maintain current status. Next, when the second beat is touched by the touch play opening, the re-trigger type multivibrator M2M2' is re-excited by the negative pulse generated at point A on the drawing as described above, and the above-mentioned state is maintained.

Then, due to the negative pulse generated at point C in the drawing, the diode D becomes conductive, and the flip-flop FIF
Since l' is activated and F,' is inverted to the ON state, a negative pulse is generated, and the negative pulse also activates flip-flop F2F2', causing flip-flops FlFl',
F2F2' is in the state shown in FIG. 32. At this time, Fl, F2 of flip-flop FlFl/, F2F2' are 0F
Since it is in the F state, the diodes Dll and Dl2 are in a non-conducting state, so the voltage at point D on the drawing becomes high as shown in FIG.
7) Since F1' and F27 are in the ON state, the diodes Dl3, Dl4, and Dl5 become conductive, so the voltages at points E and F in the drawing drop as shown in FIG. 2. Therefore, although the oscillator 2 oscillates, the tempo regulating oscillator 4 stops oscillating and the gate circuit 7 is in the 0FF state, so no rhythm is generated. Next, when the touch plate 1 is touched at the third beat, the flip-flop FlF,' is activated by the negative pulse generated at point C on the drawing as described above, but F1' is reversed and becomes 0FF. Since no negative pulse is generated, flip-flop F2F2' does not operate, and flip-flops FlF1' and F2F2' are in the state shown in FIG. 3.

At this time, since F, , F2' of the flip-flops FlF,', F2F2' are in the ON state, the diode Dll
, Dl3, and Dl5 become conductive, and the voltage at point D in the drawing drops as shown in FIG. 2, and the voltages at points E and F in the drawing continue to drop as shown in FIG.

Therefore, the oscillator 2 and the tempo regulating oscillator 4 stop oscillating, and the gate circuit 7 is also in the OFF state. And, call 2
The voltage corresponding to the time interval between the 3rd beat and the 3rd beat is stored in the tempo setting voltage synthesis circuit 3, and the tempo is set.
Next, when you touch the touch play port on the fourth beat, as mentioned above, due to the negative pulse generated at point C on the drawing,
The flip-flop FlF,' is activated, and the negative pulse generated by F,' also activates the flip-flop F2F2', so that the flip-flop FlF,F2F2
' becomes the state shown in FIG. 34.

At this time, F2' of flip-flop F2F2' is 0F.
Since it is in the F state, the diode Dl3 becomes non-conductive, so the voltage at point E on the drawing becomes high as shown in FIG. The frequency divider 5 operates, but the voltage at point F on the drawing has not risen as shown in FIG. 2, so the gate circuit 7 does not open and no rhythm sound is generated. At this time, the reset circuit 6 is activated to set the frequency divider 5 so that it always starts from the first beat of the rhythm. Then, one beat after the tempo regulation oscillator 4 starts oscillating from the terminal P of the frequency divider 5 (corresponding to the 5th beat)
, generates a positive pulse, triggers the pulse to F1 of the flip-flop FlFl', inverts F1 to the 0N state and F1' to the 0FF state, and flip-flops FlFl' and F2F2' are placed in the states shown in FIG. become.
That is, it returns to the original state of 1 at a time corresponding to the fifth beat.
Then, F1' of flip-flops F and Fl' and F2' of flip-flop F2F2' both become 0FF, and when diodes Dl4 and Dl5 cease to conduct, the voltage at point F on the drawing becomes high as shown in Fig. 2. , the reset circuit 6 is activated at the same time as the gate circuit 7 is opened,
Since the frequency divider 5 is set to start from the first beat again, the rhythm selected by the rhythm switch 9 will match the tempo set at the second and third beats, as described above. Based on this, the sound is emitted from the speaker 12. When the touch plate 1 is touched on the fourth beat, Fl and F2' of the flip-flops FlFl' and F2F2' become 0FF, and the voltage at point G on the drawing becomes high as shown in Fig. 2. A positive pulse is generated at point H, and the positive pulse that passes through the conductive diode D7 triggers F37 of flip-flop F3F3', changing F3' of flip-flop F3F3' from the 0FF state to 0N.
Since the state is reversed, F3 is reversed to the 0FF state, and the flip-flop F3F3' is in the state shown in FIG.

When F3 of flip-flop F3F3' becomes 0FF, diode D9 becomes conductive and the voltage at one point on the drawing becomes high, and the voltage at point C on the drawing also becomes high.
Even if a negative pulse is generated at point C in the drawing by touching the touch plate 1 at and after the beat, it does not reach point Cl in the drawing due to the diode D1, and the flip-flops FlFl', F2F2' does not operate.

Then, the user stops touching the touch plate 1, the continuous pulse stops, and after the time constant of the retrigger type monostable multivibrator M2M2' has elapsed, the state of the retrigger type monostable multivibrator M2M2' is reversed and stabilized. When the state returns to this state, by next touching the touch plate 1, a negative pulse is generated at point B on the drawing, the state of the first beat described above is established, and a new tempo is set.

As described above, in the present invention, when playing a rhythm, the tempo is set at the interval between the second and third beats when the touch plate is touched, and the rhythm sound starts as soon as the fourth beat is touched. Instead, the sound is always emitted from the fifth beat, one beat later, so it is ideal, especially when playing with an electronic organ, etc., as it gives you more leeway.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of the device of the present invention, FIG. 2 is a diagram showing voltage changes at points D, E, F, and G in the drawing of FIG. 1, and FIG. 3 is a diagram showing flip-flops FlFl', F2F
2', F3 is a diagram showing the state of F3'. 1 is a touch plate, 2 is an oscillator, 3 is a tempo setting voltage synthesis circuit, 4 is a tempo regulating oscillator, 5 is a frequency divider, 6 is a resetting circuit, and 7 is a gate circuit.

Claims (1)

[Claims] 1 Automatic rhythm performance that can set the tempo according to the time interval between the second and third beats that touch the touch plate, using flip-flops connected in series in multiple stages and a voltage synthesis circuit for setting the tempo. In the device, the time constant of the retrigger type monostable multivibrator connected to the touch plate via the monostable multivibrator is the time interval from the first beat to the second beat of the slowest tempo that can be considered as the rhythm tempo. The re-trigger type monostable multivibrator is configured to hold the state of the first beat by setting the length to be slightly longer than that of the re-trigger type monostable multivibrator. A monostable multivibrator and a flip-flop are connected, and the flip-flop is connected to a tempo setting voltage synthesis circuit and a gate circuit via a diode, and is closed at the first to fourth beats when the touch plate is touched. A start regulation device for an automatic rhythm performance device, in which a gate circuit is wired so as to open a tempo regulation oscillator one beat after the fourth beat of oscillation at a set tempo to start rhythm performance.