JPS6022370Y2 - Group performance training device - Google Patents

Description

[Detailed explanation of the invention] This invention is such that the parent unit commands and controls the performance range of multiple slave units that are subordinated to it, and each parent unit recognizes the switched range. This invention relates to a group performance training device for electronic musical instruments.

In a group performance training device, a plurality of slave units are subordinated to one master unit, and an electronic musical instrument for performing keyboard performance is set for each of the master unit and slave units.

In this case, the number of keys is set to be large enough to correspond to a wide range of sounds in order to freely perform performances over a sufficiently wide range and to conduct model performance training on the base unit.

On the other hand, on the handset side, the installation space is also limited,
Since the structure is simplified, the number of keys is generally limited, and it is not possible to cover a sufficiently wide range of sounds.

However, during actual performance lessons, it may become impossible to perform within a limited range depending on the content of the training piece, especially depending on the part assigned in an ensemble performance.

For this reason, especially in the case of electronic musical instruments on the handset side, it is desirable to be able to switch and select the performance range for the keyboard so that high or low range performances can be performed using a limited number of keys. It is considered.

For example, if the keyboard of the electronic musical instrument on the handset side is limited to approximately 3 octaves, the keyboard section may be 1C-C2Jr.
The configuration is such that the range can be switched so that performance sounds in each of the low, middle, and high ranges, such as C1 to C3 Jr, C2 to C4, etc., can be obtained.

This kind of range switching setting on the child unit can be performed by practicing students individually on the child unit, or the parent unit can set the child unit as a group according to the assigned part in ensemble practice etc. It is also desired that the performance range be specified for each group, and that the master unit be able to forcibly switch the range.

In either case, it is important that the teacher operating the parent device be able to accurately and easily recognize the set pitch range of each child device.

This idea was created in view of the above points, and allows the base unit to divide the slave units into groups, and generate range switching commands for each group.
It is an object of the present invention to provide a group performance training device for electronic musical instruments, which allows a base unit to reliably recognize the set pitch range of each child unit and to effectively carry out range setting guidance.

That is, the group performance training device according to this invention is provided with a slave unit selection command switch corresponding to each slave unit on the base unit side, and a display device for indicating the range corresponding to each of the selection command switches, Each slave unit generates a range display signal corresponding to the range set by a command from the base unit, and this range display signal controls the display of the range display on the base unit corresponding to each slave unit. This is how it was done.

An embodiment of this invention will be described below with reference to the drawings.

FIG. 1 shows the overall configuration of this group performance training device, in which a plurality of slave units 12ay, 12b, etc. are subordinated to one master unit 11 that operates the generation. .

For convenience, in this embodiment, four slave units are shown, and these four slave units are AI, A2, and BL, B2.
Although shown as being divided into groups, it goes without saying that in reality, a larger number of slave devices may be subordinated and the devices may be grouped into an even larger number of groups.

Then, this main unit 11 and slave units 12a, 12b...
. . . are equipped with electronic musical instruments 13 and 14 that are played by teachers and students, respectively.

In the figure, since the plurality of slave units 12a, 12b, . . . each have the same configuration, the internal configuration of the slave unit 12a is shown as a representative.

The handset 11 and each handset 12a, 12bb... each have a microphone 15.1 for making a call.
6 are provided, and the speech signals from these microphones 15 and 16 are supplied via amplifiers 17 and 18 to amplifiers 19 and 20, respectively, together with performance sound signals from the corresponding electronic musical instruments 13 and 14, respectively.

That is, performance sound signals and call signals from the base unit 11 and each slave unit 12a, 12b, etc. are obtained from the amplifiers 19 and 20, respectively, and these signals are transmitted to the base unit 1
1 and each slave unit 12a, 12b... through a transmission path S1 set between the slave unit 11 and each slave unit 12a, 12b...
b... is exchanged between.

Then, the base unit 11 and each slave unit 12a, 12b...
..., the transmitted signal is connected to the corresponding amplifier 19
．． The signals are supplied to amplifiers 21 and 22 together with the signals from 20 so that they can be listened to through headphones 23 and 24, respectively.

In this case, on the base unit 11 side, as shown in FIG. 2, slave unit selection command switches 25a, 25b, . A handset is provided so that performance sounds or calls can be selectively exchanged by selecting a handset.

Here, each electronic musical instrument 14 of slave units 12a, 12b, . . .
It is configured so that it can be selected and set to each range of 1 low yo, middle yo, and high yo from 2 to C4J, and each slave unit 12a, 12
The panel surface of b... is equipped with a range switching operator 26 as shown in A in Fig. 3, and a range display expressed in the form of a five-line staff as shown in B in the same figure. Vessels 27a, 27bg
It has 27c.

Similarly, on the base unit 11 side, as shown in FIG. 2, there are slave unit selection command switches 25a, 25b...
A display 28 is arranged to display the set pitch range of the performance sound of each corresponding slave device in 1 low J' and 11 high Yo.

Control of such range switching commands, settings, etc. is as follows:
The control circuit 29 of the master unit 11 and each slave unit 12a, 12b.
This is performed by a control circuit 30 provided in .

FIG. 4 shows the control circuit 29 of the base unit 11 in detail, and shows the simultaneous control unit 31 for all slave units 12a, 12b, . . . , group A and group B divided as described above. Group control unit 32 for groups
at 32 bl and each slave unit 12ai2b...
Individual control units 33a33b, 33c, 33d for...
Equipped with

Here, the group control units 32a and 32b are the simultaneous control units 3
1, and the slave unit control units 33a to 33b have the same configuration, so that each simultaneous control unit 31
The internal configuration of the handset control unit 33a is shown as a representative.

The simultaneous control section 31 includes a selection switch 34, moving up command switches 35a and 35b1, and a down command switch 36, and the selection switch 34 in this case issues a simultaneous selection command.

When the command switch 34 is operated, it gives a trigger reversal command to the trigger flip-flop 37, and when the flip-flop 37 is set, the selection display lamp 38
is turned on, and gate signals are given to AND circuits 39a and 39b.

Further, this set signal is also applied to the differentiating circuit 40, so that a trigger pulse is generated when the set of the flip-flop 37 is inverted.

Then, the closing output signal from the switch 35a is supplied to an AND circuit 39a, and the closing output signals of the switches 35a and 36 are supplied to a differentiating circuit 41, and a differential pulse is generated in response to the closing operation of the switch 35a or 36. teeth,
The signal is supplied to the AND circuit 39b.

Here, the switches 34, 35a, 35b, and 36 are each configured to be an automatic return type, and are turned on only when operated.
10■Logic based on power supply 11. output signal can be obtained.

Similarly, in the handset controllers 33a to 33d, the selection switch 42 and the linked up command switch 43a
, 43b, and a down command switch 44.

The selection switch 42 inverts the trigger flip-flop 45 when operated, and the output signals from the switches 43b and 44 are supplied to the differentiating circuit 46, and a differential pulse signal is generated in response to the turning on of these switches 43b and 44. It becomes like being done.

Each of the handset controllers 33a to 33d is provided with a display controller 51 for displaying the range display 28, and the selection switch 42 corresponding to each handset is the same as that shown in FIG. Machine selection command switches 25a, 25b...
It corresponds to ..., and the input is controlled by that operation.

The signals from each control section are transmitted through the transmission line Sl shown in FIG.
It is distributed and coupled to each slave unit 12a, 12b... through the slave unit 12a, 12b...
・Transmission lines 11, 1□ corresponding to respectively? '3t'
4, gate groups 47a to 47d and gate circuits 48a to 48 for exchanging performance sound and call tone signals, respectively.
d is provided.

Gate groups 47a to 47d are provided with OR circuits 49a and 49d, respectively, and gate circuits 48a to 48
d is a line L through which the output signal from the amplifier 19 is transmitted.
1 coupled gate 50a and a gate 50b connected to a line L2 supplying a signal to amplifier 21 are provided.

The gates 50a*50b are connected to the lines ILI and IL which are led to the amplifiers 22 and 20 of each corresponding child unit, respectively.
Connected to 2.

A gate signal is applied to the gate 50b of the gate circuit 48a when the flip-flop 45 of the corresponding slave device control unit 33a to 33d is set, and the selection command signal AN from the OR circuit 49a is applied to the gate 50a. When the gate is opened, the OR circuit 49a is supplied with the set output signal of the trigger flip-flop 45 of the corresponding slave device control section.

In addition, the OR circuit 49a is supplied with the set output signal of the flip-flop 37 of the simultaneous control section 31 in common to all slave devices, and the group control sections 32a, 32b.
The set output signals of the corresponding flip-flops are supplied corresponding to the grouping.

That is, the handset 12a. 12b...When a selection command is issued individually or by group, or all at once, the gate groups 47a to 47a correspond to the selected slave units.
A selection command signal AN is generated from the OR circuit 49a of 47d.

For the OR circuit 49b, together with the signal from the up command switch 43a of the corresponding slave unit control unit, the simultaneous control unit 3
Commonly supplies the output signals from the AND circuits 39a of 1,
Further, output signals corresponding to the AND circuit 39a of the group control sections 32a and 32b are divided into groups and supplied.

The output signal from this OR circuit 49b is supplied as an up command U/D to the transmission lines 1□ to 1° for each child device.

The OR circuit 49c is a differential circuit 46 of the corresponding slave device control section.
Along with the differential pulse from the control unit 31° 32a, 32b
The output signal from the AND circuit 39b is correspondingly supplied, and the OR circuit 49c generates a shift command SF.

Furthermore, the differential pulses from the differentiating circuits 40 in the simultaneous control section 31 and the group control sections 32a and 32b are coupled to the OR circuit 49d, either all at once or group by group, to generate a clear signal C1.

In addition, the range display signals ICI and FC2 from each slave unit 12a, 12b, . . .
It is supplied to the display controller 51 of a to 33d.

FIG. 5 shows slave units 12a to 1 to which signals from the transmission line Ll-L4 obtained from the control circuit 29 of the base unit 11 are supplied.
2b shows the configuration of the control circuit 30 on the side, which includes a reference oscillator 52 for the sound source.

The oscillation signal from this oscillator 52 is transmitted directly or via a frequency dividing circuit 53, and further via a frequency dividing circuit 54, to a reference sound source which is set to a different tone range, a middle range, and a low range in an octave relationship. Generate a signal.

The reference sound source signals of the tone range, middle range, and low range are each taken out through gates 55a to 55c each made of an FET.

The reference sound source signal taken out through any of the gates 55a to 55c is supplied to the electronic musical instrument 14, and the electronic musical instrument 14 divides the sound source signal corresponding to each key based on the supplied reference sound source signal. This sound source signal is extracted in response to key operations, and is appropriately shaped into a timbre to form a performance musical sound signal.

For example, when the gate 55a is opened, the electronic musical instrument 14 is set to produce performance sounds in the high range, and for example, performance sounds in the range 1C2 to C4 can be obtained in response to key operations. .

Furthermore, when the gate 55b or 55c is opened, the electronic musical instrument 14 produces performance sounds in the middle or low range.

The tone, medium, and low reference sound source signals extracted corresponding to the reference oscillator 52 and the frequency dividing circuits 53 and 54 are further supplied to corresponding fixed terminals of the tone range selection switch 56a.

This switch 56a is switched and driven by the range switching operator 26, and the reference sound source signal selected by this switch 56a is supplied to the electronic musical instrument 14 via a gate 57 made of an FET.

In other words, each child device can switch and select the performance range by itself.

In this way, the output signals of the ring counter 58 at each counting time of r J'l Then, one gate is opened according to the count value of the counter 58.

The ring counter 58 includes a control circuit 19 of the base unit 11.
The up/down command signal U/D from '0.
is set to the down state.

Then, the shift command signal SF is supplied as a counting clock signal, and the ring counter 5 is controlled according to the U/D command state.
8 comes to be controlled by counting.

Further, a clear command signal C1 from the control circuit 29 is supplied as a clear command to the ring counter 58 via the OR circuit 59, and the count value of the counter 58 is cleared and set to rO.

The OR circuit 59 is further supplied with an initial clear signal IC.

The selection command signal AN from the control circuit 29 is sent to the OR circuit 60.
At the same time, the flip-flop circuit 61 is reset.

This flip-flop circuit 61 is set by the power supply VD when the base unit call switch 62 is turned on, and the output signal at the time of setting is supplied to the AND circuit 63 as a gate signal.

This AND circuit 63 is supplied with a clock signal from a clock oscillator 64 for display blinking control, etc. The clock signal taken out from the AND circuit 63 is supplied to an OR circuit 60, and is further connected to an inverter. 65.

Then, the OR circuit 60 generates a signal IC1 to the master unit control circuit 29, and the inverter 65 gives a gate command to the display controller 66 in each slave unit.

This display controller 66 has a control signal C for display driving.
I is supplied from a power supply VD, and a display selection control signal C2 is also supplied.

This signal C2 is also used as a signal IC2 for the base unit control circuit 29, and the signals C2 and IC2 are obtained via a gate 67 or 68 made of an FET.

The gate 67 is obtained from a selection switch 56b linked to the range selection switch 56a, and a +VD power is supplied to a fixed terminal of this switch 56b corresponding to the high range.

The other fixed terminals corresponding to the mid range are open, and the fixed terminals corresponding to the low range are grounded.

Further, the gate 68 also receives +v via the gate 69.
In addition to supplying power b, the ground potential is also supplied through the gate 70, and the gates 69 and 70
is the count value 11yo of the ring counter 58 and r3
A gate signal is supplied when selecting the high range and low range of J.

Further, when the ring counter 58 is counting r□J, a gate signal is given to the gate 57, and a gate signal is given to the gate 58 from the inverter 71 at other times.

That is, when the output signal is obtained from the rOJ terminal of the ring counter 58 and cleared, the output signals IC2 and C2 are obtained according to the setting state of the selection switch 56b, and the rI
When the output signal is obtained from the J terminal, the gate 68.69
When an output signal is obtained from the terminal 73, the ground potential is applied via the gates 68 and 70, and the ground potential is further applied to r2.
When the output signal from the J terminal is obtained, the gate is 69.70.
When both are closed, an open potential can be obtained as signals IC2 and C2.

FIG. 6 shows the signals ic1. This shows the specific configuration of the display controller 51 controlled by IC2, and the display controller 66 is similarly configured.

In this figure, the display selection signal IC2 is shown as being obtained from the selection switch 56b on the handset side, and the display selection signal IC2 is obtained from the power supply E.

The signal ICl controls the gate circuit G, opens and closes the power supply to the display control circuit, and controls its operation on and off.

That is, the input control signal IC2 is connected to N through the respective resistors.
A first switch element 72 made of a PN type transistor and a second switch element 73 made of a PNP type transistor.
supply to the base of

The emitters of the transistors constituting the switch elements 72 and 73 are connected to each other, and the power source E is connected through the gate circuit G between the collectors.

The emitter interconnection of this first and second switching element 72,73 is connected to the base of a PNP transistor 74, whose collector circuit is the same (
Connected to the base of PNP transistor 75.

This transistor 74, 75 is the third switch element 76
When there is a positive potential at the base of transistor 74, transistor 74 is in an off state and transistor 75 is in an on state.

A lamp 77 serving as a display element for displaying high frequency range selection is connected in series to the collector circuit of this transistor 75.

Furthermore, the emitter interconnections of the first and second switch elements 72, 73 further include a PNP transistor 78,
Connected to the bases of NPN transistors 79 and 80, respectively.

Transistors 78 and 79 constitute a fourth switching element 81, and a lamp 82 which performs a midrange selection display and serves as a display element is connected between the collectors of transistors 78 and 79.

That is, the collector circuit of the transistor 78 is formed by the collector and emitter circuit of the transistor 79.

The collector of the transistor 80 is connected to the base of the same NPN type transistor 83.

This transistor 80.83 is the fifth switch element 84.
The collector circuit of this transistor 83 is connected to a lamp 85 which is connected in series and serves as a display element for displaying selection of low frequency ranges.

That is, when the selection switch 56b is in the high range selection state and the signal IC2 is in the +V state, the first switch element 72 is in the on state, and therefore, as described above, the transistor 74 is off and the transistor 75 is in the on state. When it is turned on, the lamp 77 is lit and the treble range selection is displayed.

In this case, transistor 78 is off and transistor 80
Since the transistor 84 is turned on and the transistor 84 is turned off, the other lamps 82 and 85 are not lit. Also, the selection switch 56b is in the middle range selection, and the signal IC2
When is at an open potential, both the first and second switch elements 72, 73 are in an off state.

In this case, transistors 74, 78, 79.
A base bias circuit is formed in cooperation with 80, transistors 74, 78, 79, and 80 are turned on, and transistors 75 and 83 are turned off.

Then, only the lamp 82 indicating the middle range is lit.

Further, when the selection switch 56b is set to the bass range selection state and the signal IC2 is set to the ground potential, the second switch element 73 is turned on, and therefore the transistor 74
．． 78 is on and 79.80 is off.

Therefore, the transistor 75 is turned off and the transistor 83 is turned on, the lamps 77 and 82 are not lit, and the lamp 85 indicating the low frequency range is turned on.
only is lit.

That is, by changing the signal IC2 from positive potential to open circuit to ground potential, the lamp? ? , 82.85 are selectively illuminated to display the selection status of the treble range, middle range, and bass range.

In the case of the display controller 66 on the handset side, the signal IC1 in FIG. 6 becomes C1, and the signal IC2 becomes C2, and the signal obtained from the inverter 65 is further inserted in series to the gate circuit G. The gate circuit is controlled and the gate circuit is always open when the flip-flop circuit 61 is reset.

When the flip-flop circuit 61 is set, the clock signal from the oscillator 64 obtained via the AND circuit 63 controls the opening and closing of the gate circuit inserted in series, and the lamp selected for display is controlled to blink. so that

That is, in the group performance training apparatus configured as described above, for example, the main unit 11 has a plurality of slave units 12a to 1.
2d, the selection switch 34 in the simultaneous control section 31 of the control circuit 59 is operated.

When this switch 34 is turned on, a trigger command is given to the trigger flip-flop 37, which is inverted and set, and when set, an output signal is given to the OR circuit 49a of the transmission lines 11 to 14 for each slave unit 12a to 12d. A signal C is given to the control circuit 30 of each child device.

At the same time, the display lamp 38 is lit to indicate on the base unit side that the simultaneous selection command has been issued.

Further, when the trigger flip-flop 37 is set to be inverted, a differential pulse is obtained from the differentiating circuit 40 in response to the inversion, and is transmitted to the control circuit of each child unit via the OR circuit 49d corresponding to the transmission lines 11 to 14, respectively. Clear command C to 30
1 is emitted.

Therefore, in the handset control circuit 30 shown in FIG. 5, the flip-flop circuit 61 is reset, the OR circuit 60 generates the signal IC1, and the ring counter 58 is cleared.

When all the selection switches 34 are operated all at once, the ring counters 58 of each handset 12a to 12d are in a cleared state, and an output signal is generated from the terminal 101, so that the gates 57 and 67 are It is in a state of being open.

Therefore, in each slave unit 12a to 12d, the range selection switch 56a, 56 is operated by the range selection operator 26.
When the user b makes an operation setting, a reference sound source signal of a tone range corresponding to the setting state is supplied to the electronic musical instrument 14, and the slave units 12a to 1
For each of the 2d, you can arbitrarily select the range you want to play.

In this case, a voltage signal corresponding to the range selected by the switch 56b is taken out via the gate 67 and becomes the signal C2 and IC2, and the range display controller 66 displays the range of the player's performance. On the main unit 11 side, the performance range corresponding to each of the slave units 12a to 12d is displayed on the display controller 51 of the control units 33a to 33d.

In other words, the performance range can be freely selected for each of the plurality of slave units, and the range selected for each slave unit is all monitored on the base unit side.

In this manner, when the switch 34 is operated and the trigger flip-flop 37 is set, a gate signal is applied to the AND circuits 39a and 39b.

Therefore, in this state, the up command switches 35a, 3
5b is operated, an output signal is generated from the AND circuit 39a, and the differential circuit 4 corresponding to this switch operation is generated.
A differential pulse from 1 is now taken out from the AND circuit 39b.

That is, an up command is generated from the OR circuit 49b, a shift command SF is generated from the OR circuit 49c, and the slave unit control unit 30
In the ring counter 58, the switches 35a, 35
It will be incremented every time b is operated.

Therefore, a signal is selectively outputted from the 11Yor2Jr3J terminal of the ring counter 58 according to the number of operations of the switches 35a and 35b, and the gates 55a to 55c
Select and open one of the
A reference sound source signal in the range specified by the user will be supplied.

That is, in this state, the performance range is forcibly specified from the base unit 11 to each of the slave units 12a to 12d all at once.

In this case, the game) 69.70 is controlled by the output signal corresponding to the specified range of the ring counter 58, voltage signals C2 and IC2 corresponding to the selected range are obtained, and the display controller 51 of the parent unit and slave unit At .66, the selected performance range will be displayed.

Next, when the selection switch 34 of the group control unit 32 or 32b is operated instead of the simultaneous control unit 31,
One of the slave units 12a and 12b1 of the A group or the slave units 12c and 12d of the B group is designated, and the performance range selection control is performed on the slave unit side or by force from the base unit, as in the case of the above-mentioned -previous control. It will be done.

In addition, when the down command switch 36 is operated with the trigger flip-flop 37 set in simultaneous control or group control as described above, 1 and the differential circuit 4
1, a differential output is obtained, and a shift command SF is generated for the slave units 112a to 12d all at once or for a selected group of slave units.

At this time, since the switch 35a is in an open state, the ring counter 58 is in a down counting state, and the ring counter 58 is counted down in response to the operation of the switch 36, and can efficiently select and specify the output of r□, to r3yo. It is.

If the switch 34 is operated again under such control from the base unit side, the trigger flip-flop 37 is reset and the slave unit selection operation from the base unit 11 is stopped.

Next, in the case of command control, control is performed by slave unit control units 33a to 33d on the base unit 11 side.

For example, when command-controlling the slave unit 12a, the slave unit control unit 3
3a, the selection designation switch 42 is operated.

When this switch 42 is operated, the trigger flip-flop 45 is inverted and set, and the slave unit 1
A signal C is generated at 2a.

At the same time, the gate 50 at 50 of the gate circuit 48a
A gate signal is given to b, and this selected slave unit 12
Performance sounds and call tones are mutually exchanged between the handset 12a and the base unit 11, and personal guidance can be provided to the handset 12a.

When the up command switches 43a and 43b of the handset controller 33a are operated in this state, an up command is issued from the OR circuit 49b of the transmission line 11 connected to the handset 12a, and a shift command is issued from the OR circuit 49c). is issued, the ring counter 58 of the corresponding slave unit control circuit 30 is controlled to advance in count, and the performance tone setting range of the slave unit 12a is forcibly specified from the base unit 11 side.

This range selection operation is effectively executed by also using the down command switch 44 as in the case described above.

Then, the range set by the handset 12a is displayed on both the base unit 11 and the handset 12a by the generation controllers 51 and 66, as in the case described above.

Further, if no child device is specified on the parent device 11 side, the parent device can be called from the child device side.

In this case, the call switch 62 of the handset control circuit 30
to set the flip-flop circuit 61.

When this flip-flop circuit 61 is set, the oscillation clock signal of the oscillator 64 is taken out from the AND circuit 63, this signal is taken out as a signal ICI through the OR circuit 60, and the corresponding slave unit controller 33a, for example, receives the oscillation clock signal from the oscillator 64. The signal is supplied to the display controller 51.

In other words, the sixth display controller 33a does not correspond to the handset 12a.
The gate G shown in the figure is controlled to open or open by a clock signal, and the display lamp corresponding to the set sound range of the slave unit 12a at that time flashes in response to the clock signal, and the base unit 11 controls the slave unit 12a. You will be able to recognize calls from.

In this case, the output signal from the inverter 65
The display controller 66 of a also blinks, so that the slave device can also recognize that the parent device is being called.

Therefore, in this state, on the base unit 11 side, if the selection switch 42 of the control unit 33a corresponding to the called slave unit 12a is operated, the dialogue between the base unit 11 and the slave unit 12a can be executed as described above. .

Here, by operating the switch 42 on the base unit 11, the signal AN is generated as described above, so the flip-flop circuit 61 is reset and the calling operation from the slave unit is stopped.

In the above embodiment, the frequency of the signal from the reference oscillator 52 is appropriately divided to form reference sound source signals of high, middle and low ranges, and based on this, the sound source signals corresponding to each key are adapted to key operations. An electronic musical instrument was used to derive the results.

However, the sound source circuit of this electronic musical instrument may have any form as long as it can switch the performance range between high, medium, and low, and may be a digital type that digitally sets the performance pitch. It can also be implemented in the case of electronic musical instruments.

In the case of this digital type, as shown in FIG. 7, as the keys are operated on the electronic musical instrument 14, an octave code expressing the pitch of the operated key and a node code serving as the scale name are generated. The sound source circuit 86 is controlled by a pitch code formed by a combination of the node code and the sound source circuit 86 to generate a sound source signal of a frequency not corresponding to the pitch code.

In such a case, the output signals corresponding to the high, middle, and low ranges from the rIJr2Jr3J terminal from the ring counter 58 used for specifying the range are sent to the OR circuits 87a and 87b.
, 87c to an encoder 88, and the encoder 88 generates addition data corresponding to the designated range.

Then, the output data from the encoder 88 is converted into an octave code from the electronic musical instrument 14 in an adder circuit 89 in accordance with the selected range, and the adder circuit 89
8 as an octave code selected in the range, and supplied to the sound source circuit 86 together with the note code.

That is, the sound source circuit 86 outputs, for example, 1C-C2 YorC in response to the range designation information from the ring counter 58.
1 to C3,'C2 to C4C2 and C4Yo sound source signals can be obtained in response to key operations.

Here, 10. in the ring counter 58. The output signal from the terminal is supplied to a gate 90 to which logic 11 is supplied, and the output signal from this gate 90 is supplied to the range selection switch 56 and distributed to OR circuits 87a to 87c, so that it can be played in each child unit. Make it possible to select the sound range.

Components in FIG. 7 that are the same as those in FIG.

As described above, according to this invention, not only can the master unit effectively perform waist ensemble performance practice etc. by freely specifying the performance range of multiple slave units, but also The set performance range can be clearly monitored on the parent unit side, and in conjunction with this display function, calls can also be displayed from the slave units, and the control panel function and control functions are simplified and the status can be adjusted. This allows for very effective communication with each handset.

In particular, in connection with the handset selection operation mechanism on the base unit, a handset range display and a call display from the handset are used together.
Monitoring of the display function on the main unit is done very easily,
Its practical effects are remarkable.

[Brief explanation of the drawing]

Fig. 1 is a block diagram schematically showing a group performance training device according to an embodiment of the invention, Fig. 2 is a diagram showing the display section on the main unit side of the above device, and Fig. 3 is a diagram showing the display section on the slave unit side in the same manner. 4 is a diagram showing the control circuit of the parent unit, FIG. 5 is a diagram showing the control circuit provided in each child unit, and FIG. 6 is a diagram showing the control circuit of the base unit. This figure shows the configuration of a range display controller, and FIG. 7 is a diagram illustrating another embodiment of this invention. 11... Base unit, 12c, 12b... Child unit, 13.14... Electronic musical instrument, 15, 16...
...Microphone, 23, 24...Headphone, 25a, 25b...Slave device selection command switch, 26...Sound range switching operator, 27a, 2
7 by 27 C928"" indicator (range), 29.
... Control circuit (master device), 30 ... Control circuit (child device), 31 ... Simultaneous control section, 32a, 3
2b...Group control section, 33a to 33d...
. . . Handset control unit, 51, 66 . . . Display controller, 52 . . . Reference oscillator, 58 . . . Ring counter.

Claims (1)

[Scope of utility model registration request] In a device in which multiple sets of slave units, each equipped with an electronic musical instrument that can switch and select a plurality of performance ranges, are subordinate to one set of base unit, each slave unit corresponding to each slave unit installed on the base unit side A device selection command switch, a display device provided corresponding to each selection command switch to indicate the range to be switched and set, and a display device provided on the parent device side to identify the plurality of slave devices and generate a range switching command. means for generating a range display signal corresponding to the set range of each slave unit; and means for controlling the display of a range display in response to the slave unit selection switch on the parent unit side using the range display signal; A group performance training device comprising a call switch provided on each child unit, and means for blinking a display on a corresponding display by operating the switch.