JPS636877B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for an electronic musical instrument such as a music synthesizer. In the music synthesizer, envelope generator, VCO
(voltage controlled oscillator), VCF (voltage controlled filter),
Control signals for the VCA (voltage controlled amplifier) and the like are all obtained from the outputs of a number of volume switches or slide switches provided on the panel. For this reason, there is a drawback that the number of failures occurs increases due to deterioration of the volume switch or slide switch over time. Another drawback is that it is difficult to check the setting values of the volume switch or slide switch.

This invention was made against the background of the above-mentioned circumstances, and its purpose is to enable control signals for controlling electronic musical instruments to be inputted by extremely simple key operations, and to also enable extremely easy confirmation of their status. Moreover, it is possible to store input and set control signals in the memory means, or conversely read and use the stored contents from the memory means, so that the contents of the control signals can be easily confirmed and used in calculations. An object of the present invention is to provide a suitable control device for an electronic musical instrument.

An embodiment in which the present invention is applied to a music synthesizer will be described below with reference to the drawings. In FIG. 1, a keyboard 1 is provided with a large number of keys arranged in pitch order, and when each key is turned on, two types of voltage signals are generated from each key: a trigger voltage and a keyboard voltage that differs for each key.
These voltage signals are then applied to the musical tone generating circuit 2.
ADSR (envelope generator) 3, VCO
(Voltage controlled oscillator) 4, VCF (voltage controlled filter)
5 to drive each circuit. Furthermore, the output signal of ADSR3 is the above VCF5.
and VCA (voltage controlled oscillator) 6, respectively. Also, the output of VCO4 is given to VCF5, and the output of VCF5 is given to VCA6, and so on.
The output of the VCA 6 is emitted from the speaker as a musical tone.

In this embodiment, signals controlling the attack, decay, sustain, and release levels or times of ADSR3, and
Setting of each control signal of VCO4, VCF5, and VCA6 is performed by respective setting operations of correspondingly provided switch circuits _SW1 to _SW0 . That is, each switch circuit SW ₁ ~
The voltage signals Vo ₁ to _{Vo o} output from SW _o are the control signals. In addition, the switch circuit
SW ₁ to _{SW o} have the same configuration, and details will be explained with reference to FIG. 2.

In addition, in this embodiment, in preparation for live performance, the control signals set by the above-mentioned switch circuits SW ₁ to _{SW o} are stored in, for example, 8 sets of memories.
The control signals are stored in advance in any one of the memories _M1 to _M8 , and the control signals stored in each of the memories _M1 to _M8 can be arbitrarily read and used during performance. For this purpose, there are 8 buttons on the panel near keyboard 1 for selecting and specifying memories M ₁ to M ₈ .
A switch and a read/write control switch (both not shown) are provided. The output of each designated switch is input to the program control circuit 7, and this program control circuit 7 is connected to the memory.
Address signal AD and switch circuit to select _M1 to _M8 and further set each address in each memory
Preset signals PR, which will be described later, are output for SW ₁ to SW _o , respectively. Therefore, the corresponding switch circuit is read from any of the memories _M1 to _M8 .
It is also possible to change the contents of the control signals preset in SW ₁ to _{SW o} by operating the switches in each of the switch circuits SW ₁ to _{SW o} , thereby creating a new control signal.

Next, with reference to FIGS. 2 and 3, the detailed configuration of the switch circuits SW ₁ to SW _o , and each switch circuit
The detailed configuration of a display device that displays the contents of the control signals obtained by SW ₁ to SW _o will be explained.
The switch circuit SW shown in FIG. 2 is representative of one of the switch circuits SW ₁ to _{SW o} shown in FIG. 1. The switch circuit SW is provided with a two-contact switch 10 which has two contacts A and B on the output side and whose common contact C is grounded. The configuration is such that neither A nor B is made up. Further, contact A is connected to the power supply terminal of voltage Vcc via resistor _R1 , and is also connected to the first input terminal of AND gate 12 via inverter 11. On the other hand, the contact B is connected to the power supply terminal via the resistor R ₂ and also to the first input terminal of the AND gate 14 via the inverter 13 . Furthermore, a low frequency clock CP is input to each of the second input terminals of the AND gates 12 and 14. And gate 12,1
Each output (clock CP) of 4 is input to the down count input terminal D or the up count input terminal U of the up/down counter 15, and is counted down or up.

The up/down counter 15 further receives a preset signal from the program control circuit 7.
When PR is given, the data Di stored in the memory M ₁ to _{M 8} (that is, corresponding to the analog quantity control signals Vo ₁ to Vo _o described above) is transferred from any of the corresponding memories M ₁ to M ₈ . digital data)
The configuration is such that the data is transferred and preset. Therefore, when the up/down counter 15 to which the predetermined data has been preset in this way is turned on to either contact A or B of the two-contact switch 10, ,
It is configured to perform an operation of down-counting or up-counting the input clock CP with respect to the predetermined data. Of course, the memories M ₁ to _{M 8} for the up/down counter 15 are
Without performing the preset operation described above, simply turn on the two-contact switch 10 to either contact A or B and set the up/down counter 15 at that time.
It is also possible to perform a down-count operation or an up-count operation from the count value.

The count data of up/down counter 15 is
The DA converter 16 converts the signal into an analog control signal Vo (a signal corresponding to any one of Vo ₁ to _{Vo o} ), which is applied to the musical tone generation circuit 2 and used as the corresponding control signal. Furthermore, when any of the memories M ₁ to _{M 8} is addressed by the program control circuit 7, the above-mentioned up/down is assigned to the memory.
Count value data of down counter 15 is data Do
It has come to be remembered as Furthermore, the above count value data is transmitted to the display control section 1 in the display device 17.
8 and converted to display data,
It is displayed on the display section 19.

FIG. 3 shows a specific configuration of the display unit 19. For example, when the up/down counter 15 has a 5-bit configuration, a bar-shaped display unit 20 (for example, It consists of a liquid crystal display (liquid crystal display). From the bottom end to the top end of the display body 20, numbers 0 to 31 indicating the contents of the count data are printed so that visual confirmation can be performed using a scale. In the illustrated example, since the count value data is 9, the display body 20 is lit from the lowest position 0 to the 9th position. In addition, the display body 20 is of course one for each switch circuit SW ₁ to SW _o , a total of n
For example, it is installed in a place near the keyboard 1 where it can be easily seen.

Next, the operation of the above embodiment will be explained along with an example of its operation. Before starting the performance, first, VCO4, VCF5,
Switch circuit SW ₁ to _{SW o} to set various control signals Vo ₁ to _{Vo o} for VCA6, ADSR3, etc.
This is done by For example, switch circuit _SW1 is ADSR3
If the control signal is for setting the control signal for the attack time of the switch circuit _SW1 , visually check the contents of the display 20 of the display unit 19 displaying the current count value data of the up/down counter 15 in the switch circuit SW1. If the displayed value is not the desired value, for example, if the displayed value is smaller than the desired value, the two-contact switch 10 is turned on to the contact B side. When contact B is closed, the output of inverter 13 becomes "1" at the binary logic level, AND gate 14 is opened (note, AND gate 12 is closed), and clock pulse CP is
begins to be input to the up count input terminal U of the up/down counter 15 via the AND gate 14. This results in an up/down counter of 15
The count data starts to increase, and the display value on the display 20 starts to increase accordingly. Therefore, the increasing display value is visually observed, and the two-contact switch 10 is turned off at the same time as the display value matches the desired value. In response, the output of the inverter 13 becomes "0", the AND gate 14 closes, and the up/down counter 15 stops counting up. At this time, the DA converter 16 outputs a control signal Vo ₁ having a value corresponding to the display value, that is, the count value data.
This control signal Vo ₁ is thus set as a control signal for the attack time of ADSR3.

On the other hand, if the value displayed on the display 20 is larger than the desired value, the two-contact switch 10 is turned on to the contact A side to open the AND gate 12, and the clock CP is input to the up/down counter 15 via the AND gate 12. is input to the down-count input terminal D of the down-count input terminal D, and the down-count operation is executed. As a result, the displayed value begins to decrease, and when it is visually confirmed that it has reached the desired value, the two-contact switch 10 is turned off. The control signal Vo ₁ corresponding to the displayed value at this time is ADSR.
This is the setting value for the attack time of No. 3.

Once the setting operations for each of the switch circuits SW ₁ to SW _o are completed as described above, performance under the control of each of the set control signals Vo ₁ to _{Vo o} can be performed by key operations on the keyboard 1.

Next, as described above, each switch circuit SW ₁ to
Data indicating the control signals Vo ₁ to _{Vo o} set by the operation of the switch 10 in SW _o , that is,
A case will be described in which the count value data of the up/down counter 15 is transferred to any one of the memories _M1 to _M8 and stored and set. That is, if you want to store the above count value data in the memory _M1 , for example, turn on the switch (provided near the keyboard 1) that specifies this memory _M1 , and also write the data using the read/write control switch. Give instructions. As a result, the program control circuit 7 outputs an address signal AD specifying the memory _M1 , and each data Do from each switch circuit _SW1 to _SW0 is stored in a predetermined area in the memory _M1 . become.

Similarly, count value data indicating the control signals Vo ₁ -Vo _o set by the operation of the switches SW ₁ -SW _o can be set in the other memories M ₂ -M ₈ as well.

On the other hand, each count value data set in any of the above memories _M1 to _M8 is read out, and each switch circuit _SW1
~ When presetting to _{SW o} , e.g.
The count value data set in _M1 is sent to each switch circuit.
When presetting to SW ₁ to _{SW o} , the switch specifying the memory M ₁ mentioned above is turned on, and a read command is given by the read/write control switch. As a result, from the program control circuit 7, the memory M ₁
At the same time, a preset signal PR is sent to each switch circuit SW ₁ to SW _o . Therefore, the data read from each area of memory _M1 is sent to each corresponding switch circuit _SW1.
~ Data in up/down counter 15 in SW _o
It will be preset as Di.

Therefore, control signals Vo _{1 -Vo o} based on the data transferred from the memory M ₁ are output from each switch circuit SW 1 -SW _o , and the tone generation circuit 2
It will be supplied to each circuit within.

At the same time, the data transferred from the memory _M1 is displayed on the display section 20 of the display section 19 and can be visually confirmed.

It should be noted that the present invention is not limited to the above-mentioned embodiments; for example, the counting capacity of the up/down counter 15 and the corresponding display capacity of the display body 20 may be arbitrary. Further, the display body may be not only a liquid crystal display element but also a display element such as a light emitting diode, and the display content may be either analog or digital.

Furthermore, in the above embodiment, the output of the up/down counter 15 is converted into an analog signal by the DA converter 16 to be used as a control signal, but in the case of a digitally controlled music synthesizer, the output of the counter 15 can be directly converted. It is sufficient if the signal is supplied to the musical tone generating circuit 2.

In addition, the present invention can be applied not only to music synthesizers but also to various data input devices such as other electronic musical instruments such as electronic organs.

As explained above, the present invention is provided with an operating means for controlling the counting operation of the up/down counting means, and the counting output of the up/down counting means is applied as a control signal to a predetermined circuit means of the main body of an electronic musical instrument. and, moreover,
Data can be exchanged between the up/down count means and the memory means,
When the contents of a specific area of the memory means are preset to the down count means, the preset value is displayed on the display means instead of the count value of the up/down count means that had been displayed until then. A control device for an electronic musical instrument that performs switching is provided. Therefore, compared to conventional volume switches or slide switches, it is only necessary to provide an externally operated switch with an extremely simple mechanism, which has the advantage of slowing down mechanical deterioration and reducing the number of failures. Furthermore, since the count output of the up/down counter is a digital signal, it is easy to store it in memory. Therefore, if you preset various control signals in memory, you can read out various control signals from memory during live performance. The performance can be performed easily and instantly by a simple switch operation, and the performance effect is extremely large. Furthermore, the display device displays the count value of the up/down counter to enable visual confirmation of the control signal, and the stored contents are read out from the specified memory area and preset to this up/down counter. When the preset value is counted, the preset value is displayed on the display instead of the previous count value, which further improves operability.

[Brief explanation of the drawing]

FIG. 1 is a circuit configuration diagram of an embodiment in which the present invention is applied to a music synthesizer, FIG. 2 is a specific circuit configuration diagram of main parts, and FIG. 3 is a diagram showing the configuration of a display section 19. 1...keyboard, 3...envelope generator, 4...VCO, 5...VCF, 6...
VCA, 7...Program control circuit, SW (SW ₁ ~
SW _o )...Switch circuit, _M1 to _M8 ...Memory,
Vo (Vo ₁ ~ _{Vo o} )...Control signal, 10...
... 2-contact switch, 15 ... Up/down counter, 16 ... DA converter, 17 ... Display device,
20...Display body.

Claims (1)

[Scope of Claims] 1. Up/down counting means; Operating means for instructing the up/down counting means to perform an up counting operation or down counting operation; and controlling the counting output of the up/down counting means. a sending means for sending a signal to a predetermined circuit means of the electronic musical instrument; a display means for displaying the counted value of the up/down counting means; and a display means for transmitting and writing the counted value of the up/down counting means; A memory means having a plurality of areas capable of holding contents, and a method for specifying a specific area of this memory means and transferring and storing the counting contents of the up/down counting means to that specific area. or a control means for selectively specifying a specific area of the memory means and reading out the stored contents of this particular area and presetting it in the up/down count means; When the stored contents of the specific area of the memory means are preset in the up/down count means, the display state of the display means is changed from the count value displayed up to that point to display the preset value. 1. A control device for an electronic musical instrument, comprising: means;