JPH07114374A - Initial set information transmitter of electronic musical instrument - Google Patents

Abstract

PURPOSE:To provide an initial set information transmitter of electronic musical instrument by transmitting initial set information outside at need at the time of turning on a power source. CONSTITUTION:This initial set information transmitter is constituted by having an initial operator scanning means 10 for scanning the initial state of an operator at the time of turning on the power source, a memory means 100 for storing the prescribed information, a judging means 10 for comparing the prescribed information stored in this memory means 100 and the information indicating the set state of the operator obtd. by this initial operator scanning means 10 and making judgment to the effect that the information indicating the set state of the operator is ought to be outputted outside when two sets of the information described above are different and a signal transmitting means 16 which transmits the information indicating the set state outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an initial setting information transmitting apparatus for an electronic musical instrument, which informs other electronic musical instruments of information set when the power source of the electronic musical instrument is turned on.

[0002]

2. Description of the Related Art In recent years, for example, in schools and music educational institutions, music education is often conducted using electronic musical instruments such as electronic pianos and electronic organs. As such an electronic musical instrument for music education, for example, in one electronic musical instrument,
A plurality of sections including an independently operable keyboard device and an operation panel has been developed to allow a plurality of students to perform simultaneously.

As such an electronic musical instrument for education, in order to enable group learning by a large number of people, a plurality of electronic musical instruments are connected to each other and information is transmitted and received between them to make each electronic musical instrument desired. It is known to set the state.

[0004]

By the way, in the conventional electronic musical instruments, the internal state immediately after the power was turned on was different. Therefore, if one electronic musical instrument is initially set to a high volume and another electronic musical instrument is set to a low volume, the overall balance cannot be achieved when group learning or ensemble performance is performed with a plurality of electronic musical instruments. Had to adjust to.

Therefore, recently, a device which transmits information indicating the internal state of the electronic musical instrument to another electronic musical instrument when the power is turned on so that the other electronic musical instrument can be set to a predetermined state has been developed and put into practical use. There is.

However, such an electronic musical instrument scans the setting state of the operating element or the like when the power is turned on and uniformly transmits it as information indicating the initial state to the outside, or no information until the operating element is operated. Is configured not to be transmitted to the outside, and the information indicating the initial state is uniformly transmitted. Therefore, there is a problem that data that does not need to be transmitted is transmitted immediately after the power is turned on, or inconvenient data is transmitted.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an initial setting information transmitting apparatus for an electronic musical instrument, which is capable of transmitting the initial setting information to the outside when necessary when the power is turned on. To do.

[0008]

In order to achieve the above object, an initial setting information transmitting apparatus for an electronic musical instrument according to a first aspect of the present invention scans the setting state of an operating element when power is turned on. Means, a determination means for determining whether or not to output information indicating the setting state of the operator obtained by the initial operator scanning means to the outside, and the determination means to output to outside. And a transmitting means for transmitting the information indicating the setting state to the outside when it is determined that the setting state is determined.

For the same purpose, the initial setting information transmitting apparatus for an electronic musical instrument according to the second aspect of the present invention further comprises a storage means for storing predetermined information, in addition to the configuration of the first aspect.
The judgment means compares the predetermined information stored in the storage means with the information indicating the setting state of the manipulator obtained by the initial manipulator scanning means, and if they are different, the setting state of the manipulator It is characterized in that the information indicating is to be output to the outside.

[0010]

In the initial setting information transmitting apparatus for an electronic musical instrument according to the first aspect of the present invention, when the power is turned on, the setting state of the operator is scanned to obtain information indicating the setting state. Then, based on predetermined information, it is determined whether or not the information indicating the obtained setting state of the operator is to be transmitted to the outside, and only when it is determined to be transmitted to the outside, the setting state of the operator is set. Is transmitted to the outside.

As a result, unlike the prior art, since the information indicating the setting state of the operator is not uniformly transmitted to the outside when the power is turned on, useless transmission can be avoided and the startup time of the electronic musical instrument can be shortened. To be done. Further, since it is possible to avoid the transmission of inconvenient data after being transmitted, the receiving side device does not need to perform a special process such as removing the received data, thereby simplifying the process. The device on the receiving side can receive the information indicating the setting state of the operating element, and can change the setting state of its own operating element based on this information. This means that another electronic musical instrument can be set in a desired state by an instruction from a predetermined electronic musical instrument.

Further, in the electronic musical instrument initial setting information transmitting apparatus according to the second aspect of the present invention, a specific value is stored as the predetermined information stored in the storage means. On the other hand, the manipulator is set to a value different from the specific value and the power is turned on. As a result, the determining means determines that the information indicating the setting state of the operating element should be transmitted to the outside, so that the value set by the operating element of the electronic musical instrument is transmitted to the outside.

Therefore, by storing a specific value different from the value set by the operator in the storage means, the receiving side device can be brought into a desired setting state. Further, when it is not necessary to transmit the information indicating the setting state of the operator to the outside, the same value as the value set by the operator may be stored in the storage means.

[0014]

Embodiments of the present invention will now be described in detail with reference to the drawings. In the following, an example of transmitting the volume data set by the volume switch 14 to an external device (other electronic musical instrument) will be described as an example of transmitting the setting state of the operator to the external device.

FIG. 1 is a block diagram showing a schematic configuration of an electronic musical instrument to which the initial setting information transmitting apparatus of the present invention is applied. The electronic musical instrument of this embodiment has three sections A, B and C, which are suitable for, for example, group learning, and is configured so that three performers can perform independently at the same time. Be present.

In this electronic musical instrument, a central processing unit (hereinafter referred to as "CPU") 10, a read only memory (hereinafter referred to as "ROM") 11, a random access memory (hereinafter referred to as "RAM") 12 are provided. , Panel switch 13, volume switch 14, keyboard switch 15
And sound processing unit (hereinafter "SP
It is abbreviated as "U". ) 17 main components are interconnected via a system bus. The system bus is composed of an address bus 40 and a data bus 41,
It is used to send and receive data between the above-mentioned components.

The CPU 10 controls each part of the electronic musical instrument according to a control program stored in the ROM 11. The CPU 10 corresponds to a determination means, and for example, determines whether or not to transmit the volume data set by the volume switch 14 of the electronic musical instrument to an external device when the power is turned on, and according to the determination result. Execute the sending process. Further, the CPU 10 executes key depression / key release processing and the like.

The CPU 10 includes peripheral circuits (input / output port, interrupt control circuit, etc.) not shown. The CPU 10 also includes a timer (not shown). This timer generates an interrupt to the CPU 10 every 1 millisecond, for example.
3, the volume switch 14 and the keyboard switch 15 are used as respective scan timings. Then, in the interrupt process for the interrupt of this timer, each switch 1
When the events 3, 14, and 15 are detected, event data corresponding to each event is generated and written in the event queue.

An initial volume setting switch 100 is connected to an input port (not shown) of the CPU 10. The initial volume setting switch 100 corresponds to the storage means and is configured as shown in FIG. 11, for example. In FIG. 11, SW0 to SW7 are open / close switches, and R0 to R7 are resistors acting as pull-up resistors. Each open / close switch SW0-SW
One end side of 7 is grounded, and the other end side of each resistor R0
It is connected to one end of R7 and the input ports P0 to P7 of the CPU 10. The other ends of the resistors R0 to R7 are connected to the power supply VCC.

When the open / close switches SW0 to SW7 are closed, the input port of the CPU 10 is grounded, so that the L level signal is released, and when the open switches SW0 to SW7 are opened, the input port of the CPU 10 is powered through the resistors R0 to R7. By connecting to VCC, H level signals are transmitted to the CPU 10 respectively.
Input port supplied. The initial volume setting switch 100 has eight opening / closing switches SW0 to SW7, so that an initial fixed value of the volume of 256 levels of 0 to 255 can be set by a digital value. The data set by the initial volume setting switch 100 is referred to in the initialization process at the time of turning on the power, which will be described later.

In the present embodiment, the open / close switch is used as the storage means for storing the initial fixed value of the sound volume, but other switches that the operator can set an arbitrary value and can be directly read by the CPU 10, for example, A sliding volume switch, a rotary volume switch, etc. can also be used. Also, a battery-backed RAM can be used as the storage means. In this case, the initial fixed value of the volume can be set in the system setting mode for setting various parameters usually provided in the electronic musical instrument. Further, the initial volume setting switch 100 may be provided in a specific A or the like of the ROM 11.

The CPU 10 also controls transmission / reception of data to / from an external device via a serial interface 16 described later. Further, the CPU 10 performs control to generate a control signal for the selectors 20 to 23, which will be described later, and select a tone signal to be sent from each output terminal of the electronic musical instrument. Details of these will be described later.

As described above, the ROM 11 includes the CPU
In addition to storing 10 control programs, various fixed data used by the CPU 10 are stored.

The RAM 12 temporarily stores various data handled by the CPU 10, and includes various registers, counters, buffers, etc. for controlling the electronic musical instrument.
Flags and the like are defined (details will be described later).

The panel switch 13 is a switch group mounted on an operation panel (not shown), and is composed of three sections A, B, and C. This panel switch 13
Are connected to the CPU 10 via the data bus 41. The detailed configuration of the panel switch 13 will be described later.

The sections A, B and C of the panel switch 13 include the following switches. Monitor switch Transpose switch Ensemble state changeover switch Other switches (tone switch, effect switch, etc.)

The monitor switch consists of three sections A,
It is used to select which of the tone signals output by B and C is to be output to the monitor output terminal. The transpose switch is used to change the pitch of the sound to be produced. The ensemble state changeover switch switches between outputting the tone signal of each section to the headphone output terminals HP1 to HP3 or outputting the tone signal of the ensemble state (the tone signal in which the tone signals of each section are mixed by the digital mixer 19). Used for. The tone color switch is used to select one tone color from a plurality of prepared tone colors, and the effect switch is used to specify the type of effect to be given to a musical sound.

A display unit 130 (not shown in FIG. 1; see FIG. 2) for indicating the ON or OFF state of each switch is provided corresponding to each switch constituting the panel switch 13. There is. The detailed configuration of the display 130 will be described later.

The volume switch 14 corresponds to an operator and is composed of, for example, a slider mounted on an operation panel (not shown). The volume switch 14 can also be configured with a foot pedal. The volume switch 14 is provided in each of the three sections A, B, and C, and controls the volume of each section independently. The volume switch 14 is connected to the CPU 10 via a data bus 41. The detailed configuration of the volume switch 14 will be described later.

The keyboard switch 15 is a switch that opens and closes in conjunction with a key of a keyboard device (not shown), and is composed of three sections A, B, and C. This keyboard switch 1
5 is connected to the CPU 10 via the data bus 41. The detailed configuration of the keyboard switch 15 will be described later. In the present embodiment, a one-contact type keyboard device will be described as an example, but a two-contact type keyboard device is used to detect ON / OFF of each key and also to detect an initial touch. You can also

The serial interface 16 connected to the CPU 10 corresponds to a transmitting means, and is used to control transmission / reception of musical tone information between the electronic musical instrument and an external device. Examples of the external device include other electronic musical instruments, sequencers, computers, and the like. As the information transmitted and received by the serial interface 16, for example, MIDI information and other various information can be used. This serial interface 16
Interrupts the CPU 10 so that the CPU 10
Data is sent and received between and (the details will be described later).

The SPU 17 is a so-called sound source. This SPU
A waveform memory 18 is connected to 17. The waveform memory 18 is composed of, for example, a ROM, and stores waveform data of a plurality of types of musical instrument sounds corresponding to each sounding parameter. The waveform data stored in the waveform memory 18 is created, for example, by converting the emitted musical sound into an electric signal and performing pulse code modulation (PCM) on the electric signal.

The SPU 17 is provided with a plurality of oscillators, and one to several oscillators are assigned to each of the plurality of tone generation channels. Then, in each tone generation channel, one digital tone signal corresponding to the tone generation parameter is generated.

The SPU 17 also independently generates digital tone signals of the sections A, B, and C. The digital tone signal of the section A created by the SPU 17 is the digital mixer 19 and the selector 20.
The digital tone signal of section B is sent to the A input terminal of the digital mixer 19 and the selector 21, and the digital tone signal of section C is sent to the A input terminal of the digital mixer 19 and the selector 22. To be

The digital mixer 19 mixes the digital tone signals of the sections A, B and C sent from the SPU 17. The digital tone signals mixed by the digital mixer 19 are sent to the B input terminals of the selectors 20 to 22 and the D / A converter 27. The digital musical tone signal output by the digital mixer 19 includes three sections, that is, musical tones played by three performers. This means that an ensemble performance by three performers is possible.

The selector 20 responds to the control signal from the CPU 10 supplied to the S input terminal, and supplies the digital musical tone signal of the section A supplied to the A input terminal or the mixed digital musical tone signal supplied to the B input terminal. Is selected and sent to the D / A converter 24.

Similarly, the selector 21 responds to the control signal from the CPU 10 supplied to the S input terminal, to the digital tone signal of section B or B supplied to the A input terminal.
One of the mixed digital tone signals supplied to the input terminal is selected and sent to the D / A converter 25.

Similarly, the selector 22 responds to the control signal from the CPU 10 supplied to the S input terminal, to the digital tone signal of section C supplied to the A input terminal or B section.
One of the mixed digital tone signals supplied to the input terminal is selected and sent to the D / A converter 26.

The selector 23 responds to the control signal from the CPU 10 supplied to the S input terminal, to the digital musical sound signal of the section A supplied to the A input terminal or the digital musical sound of the section B supplied to the B input terminal. Either the signal or the digital tone signal of the section C supplied to the C input terminal is selected and sent to the D / A converter 28.

The D / A converters 24 to 28 are well-known ones for converting the input digital musical tone signal into an analog musical tone signal. The digital tone signals output by the selectors 20, 21, 22, the digital mixer 19, and the selector 23 are converted into analog tone signals by the D / A converters 24 to 28, and sent to the amplifiers 29 to 33, respectively.
The amplifiers 29 to 33 are well-known amplifiers that amplify the input analog musical tone signal with a predetermined amplification factor.

The analog tone signals of the sections A, B and C amplified by the amplifiers 29 to 31 are output to the outside via the headphone output terminals HP1, HP2 and HP3, respectively. As a result, each performer playing the sections A, B, and C can listen to his / her performance through, for example, headphones. When the B input terminal side is selected by the selectors 20 to 22, the performer of each section can listen to the mixed musical sound.

The analog tone signal amplified by the amplifier 32 is output to the outside through the speaker output terminal SP.
A speaker (not shown) is connected to the speaker output terminal SP, and the musical sound mixed by the digital mixer 19 is emitted through the speaker. Therefore, it is possible to perform the ensemble performance while confirming the ensemble state by all players.

The analog tone signal amplified by the amplifier 33 is output to the outside via the monitor output terminal MON.
Teacher's headphones are usually connected to the monitor output terminal MON. Therefore, the teacher can individually monitor the musical sound played by the performer of each section according to the selection state of the selector 23.

Next, the configuration of the keyboard switch 15, the panel switch 13 and the volume switch 14 will be described in more detail with reference to FIGS. 2 and 3. Although only the configuration of the section A is shown in FIGS. 2 and 3, the sections B and C are also realized by the same configuration.

In FIG. 2, a latch 50 is an 8-bit latch provided with a current amplification buffer and constitutes a scan circuit. The input side of the latch 50 is connected to the data bus 41. The output of the latch 50 is sent as a scan signal to the keyboard switch 15, panel switch 13 and display 130 of each section A, B and C. Further, a clock signal CWR defining the latch timing is supplied from the CPU 10 to the CK input terminal of the latch 50.

The keyboard switch 15 is, as shown in FIG.
It is composed of a switch matrix of rows (X0 to X7) × 8 columns (Y0 to Y7). The intersection of this switch matrix corresponds to one key of the keyboard device. As shown in FIG. 3B, an open / close switch SW as a key switch and a diode D are provided at the intersections of the switch matrix. That is, the open / close switch S
One end of W is connected to the column line Yj, the other end of the open / close switch SW is connected to the anode of the diode D, and the cathode of the diode D is connected to the row line Xi.

The gate 51 is an 8-bit gate circuit, which outputs data for one column of the keyboard switch 15 to the data bus 4.
Used to output to 1. The input side of the gate 51 is connected to eight row lines (X0 to X7). The output side of the gate 51 is connected to the data bus 41. An enable signal RK1 for controlling opening / closing of the gate is supplied from the CPU 10 to the G1 input terminal of the gate 51. While the enable signal RK1 is at the L level, the passage of data from the keyboard switch 15 is permitted and the data is output to the data bus 41. On the other hand, enable signal RK
While 1 is at the H level, passage of data from the keyboard switch 15 is prohibited and the output terminal of the gate 51 is set to a high impedance state. The other enable terminal G2 of the gate 51 is grounded and is always enabled.

A resistor 52 is inserted between the keyboard switch 15 and the gate 51. The resistor 52 is a collective resistor in which, for example, eight resistance elements are integrated, and each row line (X0 to X7) is grounded via each resistance element. That is, the resistor 52 functions as a so-called pull-down resistor.

The scanning operation of the keyboard switch 15 having the above-described configuration is performed as follows in the interrupt processing for the timer interrupt that occurs every 1 millisecond, for example. First,
The CPU 10 activates the clock signal CWR in a state where 8-bit scan data in which only the bit corresponding to the column line Yj to be scanned is turned on is flown to the data bus 41. As a result, the scan data is set in the latch 50, and the H level signal is supplied only to the Yj column of the keyboard switch 15. At this point, if the open / close switch SW in the Yj-th column is closed (while the key is being pressed), the H-level signal appears on the row line Xi via the diode D, and the gate 5
1 is supplied to the input terminal.

On the other hand, if the open / close switch SW on the Yj-th column is open (during key release), the H-level signal is not supplied to the diode D. Therefore, although the row line Xi is opened, the row line Xi is pulled down by the resistor 52,
i becomes L level, and an L level signal is supplied to the input terminal of the gate 51. In this state, when the enable signal RK1 is supplied from the CPU 10 to enable the gate 51, the bit corresponding to the key being pressed is "1".
Then, 8-bit key data in which the bits corresponding to the key being released are set to “0” are sent to the CPU 10 via the data bus 41.

The CPU 10 compares the key data thus fetched with the key data fetched in the previous process for the same column line, and when there is a changed bit, there is a key depression or key release. Recognizing that the event has occurred, key-on or key-off event data (see FIG. 13) is created and set in the event queue described later. This operation
For example, in the interrupt processing every 1 millisecond, each column line Y0 to Y
By cyclically performing for 7, scanning for all keys (64 keys in the figure) is realized.

The panel switch 13 is, as shown in the figure,
It is composed of a switch matrix of 4 rows (X0 to X3) × 8 columns (Y0 to Y7). Each intersection of this switch matrix corresponds to each switch mounted on the operation panel. In the Y6 and Y7 columns, switches are assigned only to the X0 row. The intersections of the matrix have the same structure as the switch matrix of the keyboard switch 15 described above (see FIG. 3B), but, for example, push button switches are used as the switches.

The intersection [X0,
A monitor switch is assigned to Y7], a transpose switch is assigned to the intersection [X0, Y6], an ensemble state changeover switch and other switches (tone color switch, effect switch, etc.) are assigned to the other intersections. In addition,
The monitor switch is a switch provided only in one section (for example, section A), and the switches assigned to other intersections are the same in each section.

The gate 53 is a 4-bit gate circuit and is used to output the data for one column of the panel switch 13 to the data bus 41. The input side of the gate 53 is connected to four row lines (X0 to X3).
The output side of the gate 53 is connected to the data bus 41. An enable signal RP1 for controlling opening / closing of the gate is supplied from the CPU 10 to the G1 input terminal of the gate 53. While the enable signal RP1 is at the L level, passage of data from the panel switch 13 is permitted and the data is output to the data bus 41. On the other hand, while the enable signal RP1 is at the H level, the passage of data from the panel switch 13 is prohibited and the output terminal of the gate 53 is set to the high impedance state. The other enable terminal G2 of the gate 53 is grounded and is always enabled.

A resistor 54 is inserted between the panel switch 13 and the gate 53. The resistor 54 is composed of, for example, a collective resistor in which four resistance elements are integrated, and each row line (X0 to X4) is grounded via each resistance element. That is, the resistor 54 functions as a so-called pull-down resistor.

The scan operation of the panel switch 13 having the above-described configuration is performed as follows in the interrupt process for the timer interrupt that occurs every 1 millisecond, for example. That is, the CPU 10 activates the clock signal CWR in a state where 8-bit scan data in which only the bit corresponding to the column line Yj to be scanned is set is flown to the data bus 41. This causes the scan data to
It is set to 0, and H is applied only to the Yj column of the panel switch 13.
A level signal is supplied. At this point, if the open / close switch SW in the Yj-th column is closed (switch-on state), the H-level signal is transmitted through the diode D to the row line Xi.
And is supplied to the input terminal of the gate 53.

On the other hand, if the open / close switch SW on the Yj-th column is open (in the switch-off state), the H-level signal is not supplied to the diode D. Therefore, although the row line Xi is in an open state, it is pulled down by the resistor 54, so that the row line Xi is at the L level and an L level signal is supplied to the input terminal of the gate 54. In this state, the CPU
The enable signal RP1 is supplied from 10 and the gate 53
When is enabled, the 4-bit panel data in which the bit corresponding to the switch turned on is set to "1" and the bit corresponding to the switch turned off is set to "0", respectively. It is sent to the CPU 10 via the data bus 41.

The CPU 10 compares the panel data thus fetched with the panel data fetched by the previous processing for the same column line, and if there is a changed bit, it is switched on or off. Recognize that When the tone color switch is turned on, the tone color change event data is output, and when the transpose switch is turned on, the pitch change event data is output.
When the monitor switch is turned on, monitor change event data is created, and when the ensemble state change switch is turned on, ensemble state change event data is created and set in an event queue described later (see FIG. 13). ). By performing such an operation cyclically for each column line Y0 to Y7 in the interrupt processing for every 1 millisecond, for example, scanning for all switches (26 in the figure) is realized.

As shown in the figure, the display unit 130 is composed of a matrix of light emitting diodes (hereinafter, referred to as “LED”) of 4 rows (X0 to X3) × 8 columns (Y0 to Y7). Each intersection of this LED matrix corresponds to each LED mounted on the operation panel. Also, LE
The D matrix corresponds to the switch matrix of the panel switch 13 except for columns Y6 and Y7.
In columns Y6 and Y7, LEDs are assigned only to rows X1 to X3. As shown in FIG. 3 (C), the intersections of the LED matrix are configured such that the anodes of the LEDs are connected to the column lines Yj and the cathodes of the LEDs are connected to the row lines Xi.

The intersection of this LED matrix [X1, Y
7], [X2, Y7], [X3, Y7] are assigned the section display LEDs selected by the monitor switch. Also, the intersection of the LED matrix [X
1, Y6], [X2, Y6] [X3, Y6] indicates whether the pitch is currently set to one octave higher, normal, or one octave lower when the pitch is changed by the transpose switch. LEDs to display are assigned. LEDs for indicating the on / off states of the ensemble state changeover switch and other switches (tone switch, effect switch, etc.) are assigned to the other intersections.
The intersections [X1, Y7], [X2, Y7] [X
The LEDs of [3, Y7] are provided only in one section (for example, section A), and the LEDs assigned to the other intersections are the same in each section.

The latch 55 is a 4 equipped with a current amplification buffer.
It is a bit latch and constitutes an LED drive circuit. The input side of the latch 55 is connected to the data bus 41. Further, the output of the latch 55 is the row line X of the LED that constitutes the display 130 via the resistor 56.
0 to X3. The CK input terminal of the latch 55 has a clock signal WP1 that defines the latch timing.
Is supplied from the CPU 10.

The resistor 56 is composed of a collective resistor in which, for example, four resistance elements are integrated, and is used to limit the drive current of the LED.

With the above configuration, the display 130 is turned on in a time-sharing manner as described below. That is, CPU1
0 activates the clock signal CWR in a state where 8-bit data in which only the bit corresponding to the column line Yj to be turned on of the display unit 130 is turned on is passed through the data bus 41. As a result, the data designating the column is set in the latch 50, and the H-level signal is supplied only to the Yj column of the display 130.

In this state, the CPU 10 causes the data in which the row including the LED to be turned on is set to "0" to flow to the data bus 41, and then supplies the clock signal WP1.
As a result, the data flowing on the data bus 41 is set in the latch 55. Then, the row line Xi corresponding to the data "1" is set to the H level, and no current flows in the LED arranged at the intersection with the column line Yi to which the H level signal is supplied, and the LED is not turned on. On the other hand, the row line Xi corresponding to the data of "0" is set to the L level, and the LED arranged at the intersection with the column line Yi to which the signal of the H level is supplied is lit by the current. The CPU 10 controls the turning on / off of all the LEDs (30 in the figure) by sequentially and cyclically performing the above operation on all the column lines Y0 to Y7. In the above embodiment, the lighting time of each LED is 1
Although it is during the / 8 cycle, since lighting / extinguishing control is cyclically performed, it seems to the human eye that the lighting is continuous.

The detailed structure of the volume switch 14 is as follows.
It is shown in FIG. That is, the volume switch 14 is composed of the variable resistor VR, the A / D converter 60 and the gate 61.

One end of the resistance element included in the variable resistor VR is connected to the power supply VCC, and the other end is grounded. Then, the signal extracted from the slider is A / D converter 60.
Sent to. The A / D converter 60 converts a voltage value as an analog value input from the variable resistor VR into a digital value and outputs it as 8-bit data. The output of the A / D converter 60 is sent to the gate 61.

The gate 61 is an 8-bit gate circuit and is used to output the data from the A / D converter 60 to the data bus 41. The G1 input terminal of the gate 61 has an enable signal VR for controlling opening / closing of the gate.
1 is supplied from the CPU 10. This enable signal V
While R1 is at the L level, the passage of data from the A / D converter 60 is permitted and the data is output to the data bus 41. on the other hand,
While the enable signal VR1 is at the H level, the passage of data from the A / D converter 60 is prohibited and the output terminal of the gate 61 is set to the high impedance state. The other enable terminal G2 of the gate 53 is grounded and is always enabled.

The reading operation of the volume switch 14 having the above-mentioned configuration is performed as follows. That is, when the operator operates the slider of the variable resistor VR, a voltage corresponding to the operated position is supplied to the A / D converter 60. CP
U10 activates the enable signal VR1.
As a result, volume data indicating the volume value output from the A / D converter 60 is output to the data bus 41, so that the CPU 10 takes in this and ends the read operation.

Next, the operation of the electronic musical instrument having the above structure will be described with reference to the flow chart shown in the drawings. Note that the processing corresponding to the section A will be described below, but other sections will also be described.
It is realized by the same processing except the processing of the monitor switch.

First, various registers, counters, buffers, flags and the like defined in the RAM 12 will be briefly described with respect to main ones used in the following embodiments. (1) Event queue: A FIFO for queuing event data. (2) Event queue read / write pointer ... A pointer that controls the read / write of the event queue. (3) Serial receive buffer: serial interface 1
This is a FIFO for temporarily storing the data input from the No. 6. (4) Serial reception buffer read / write pointer: A pointer for controlling the read / write of the serial reception buffer. (5) Serial transmission buffer ... Serial interface 1
FIF for temporarily storing data to be sent to the outside via
It is O. (6) Serial transmission buffer read / write pointer This is a pointer for controlling the read / write of the serial transmission buffer. (7) Volume buffer ... A buffer that stores the current volume value. (8) Tone color buffer ... This is a buffer for storing the current tone color number. (9) Pitch buffer ... This is a buffer that stores the changed value for the current pitch. (10) Monitor buffer ... A buffer that stores data indicating the section currently selected by the monitor switch. (11) Ensemble buffer: Headphone output terminals HP1 to HP3
Is a buffer that stores which of the tone signal of each section or the mixed tone signal is output. (12) Assignment memory: A memory provided for each tone generation channel, and stores tone information for generating a tone in each tone generation channel.
The musical tone information includes, for example, a key number, a player number, a tone color number, a pitch change value, volume data and the like.

(1) Main Routine FIG. 4 is a flowchart showing the main routine of the present electronic musical instrument, which is started by turning on the power. That is, when the power is turned on, first, initialization processing is performed (step S10).

The details of this initialization processing are shown in the flowchart of FIG. In the initialization process, first, CP
U10 is initialized (step S100). That is, the process of setting the internal state of the CPU 10 to the initial state is performed. Next, the SPU 17 is initialized (step S101). That is, by sending predetermined data to the SPU 17, a process of suppressing generation of unnecessary sound when the power is turned on is performed.

Next, the FIFO is initialized (step S102). That is, initial values are set in the event queue, the serial reception buffer, the serial transmission buffer, and the read pointer and the write pointer of each of these memories. Next, other RAM variables are initialized (step S103). The "other RAM variables" include initial values to be set in various registers, counters, buffers, flags and the like.

Next, a process of transmitting the volume data set by the volume switch 14, which is a feature of the present invention, to an external device is performed. That is, first, the setting state of the switch is read from the initial volume setting switch 100 and RA
It is set in the temporary buffer provided in M12 (step S104). Next, a process corresponding to the initial manipulator operating means, that is, a process of reading the volume data from the volume switch 14 and setting it in the volume buffer is performed (step S105).

Next, the contents of the temporary buffer and the contents of the volume buffer are compared (step S10).
6). When it is determined that the two match, the process returns from this initialization process routine to the main routine without performing the following process. On the other hand, if it is determined that the two do not match, the contents of the volume buffer are transmitted to the SPU 17 (step S107). As a result, the SPU 17 will generate a digital musical tone signal having a volume corresponding to the volume data set in the volume buffer.

Then, the contents of the volume buffer are stored in the serial transmission buffer (step S108). That is, for example, a control change MIDI message for changing the volume is created and written in the position indicated by the write pointer of the serial transmission buffer. Then, the write pointer is incremented. When the above processing is completed, the routine returns from this initialization processing routine and returns to the main routine. Here, the volume change message set in the serial transmission buffer is output to an external device via the serial interface 16 in an interrupt process described later.

Through the above processing, the operator can control whether to transmit the volume value set by the volume switch 14 of the electronic musical instrument to the outside.
That is, when transmitting the volume value set by the volume switch 14 of the electronic musical instrument to the outside, set the initial volume setting switch 100 to the volume switch 14
Set a value different from the setting of and turn on the power.

For example, when the volume switch 14 sets the volume data "64" and the volume data is to be transmitted to an external device, the initial volume setting switch 10
The setting of 0 is set to a value different from the above, for example, “0”. As a result, as the volume data of the electronic musical instrument, “6
4 ”is used and is transmitted to an external device (for example, an electronic musical instrument connected to the outside), and“ 64 ”is used as the volume data of the external device. If it is desired not to send the volume data to the outside, the initial volume setting switch 100 is set to the same value as the setting value of the volume switch 14, that is, "64". As a result, the volume data is not transmitted to the outside even when the power is turned on.

However, as described below, when the same processing as steps S105 to S108 is performed in the main routine, the processing of steps S105 to S108 is deleted from the initialization routine and after step S104 is executed. It may be configured to return to the main routine.

In the main routine, it is next checked whether or not there is an event (step S11). This is done by checking whether the values of the read pointer and the write pointer of the event queue are the same. When it is determined that they are the same, the event queue is recognized to be empty, and the process branches to step S21 to perform the volume scan process. Details of this volume scan processing are shown in the flowchart of FIG.

In the volume scan processing, first, the volume data is read from the volume switch 14 of the predetermined section n (step S50). here,
“N” is a section number indicating section A, B, or C. For example, “0” is assigned to section A, “1” is assigned to section B, and “2” is assigned to section C. This section number is used to remember to which section the scan of the volume switch 14 is currently completed. This section number is RAM1
2 is stored in the section buffer.

Next, the volume data read this time is compared with the volume data read last time and already set in the volume buffer (step S51). If it is determined that the above two data are not the same, it is recognized that the volume switch 14 has been operated, and volume change event data is created based on the volume data read this time (see FIG. 13), and the event queue Is set to (step S52). That is, volume data is set in the 3rd byte (byte 2) of the event data, and the 1st, 2nd and 4th bytes of data are added to make 4bytes of data, which is used as volume change event data. , Write to the position indicated by the write pointer of the event queue, and then increment (+4) the write pointer.

On the other hand, when it is determined that the both data are the same, it is recognized that the volume switch 14 has not been operated, and the process of step S52 is skipped. Then, n is updated (step S53). That is,
"1" is added to the content of the section buffer. Then, if the addition result exceeds "2", it is cleared to "0". That is, the content of the section buffer is controlled so as to circulate as "0 → 1 → 2 → 0 → ..." each time it makes a round in the main routine. After that, the process returns from this volume change processing routine and step S11 of the main routine.
Return to. Note that the above n is updated by "2 → 1 → 0 → 2 →
... "may be controlled so as to circulate.

With this configuration, since the volume switch 14 of one section is scanned in one volume scan processing, other processing is stopped for a long time because the A / D conversion operation takes time. It is possible to avoid such a situation.

The main routine waits for event data to be queued in the event queue while repeatedly executing steps S11 and S21. During this repeated execution, it is detected in step S21 that the panel switch 13 or the keyboard switch 15 described above is operated by an interrupt process every 1 millisecond, or that the volume switch 14 is operated. Alternatively, when it is detected that an interrupt for serial reception has occurred, event data for each event is created and set in the event queue.

If it is determined in step S11 that there is an event, that is, if the value of the read pointer is greater than the value of the write pointer, then the event queue is read out ( Step S
12). The event data stored in the event queue is composed of 4 bytes as shown in FIG. 13, for example. In this step, 4-byte event data is read from the position indicated by the read pointer. Then, the read pointer is incremented (+4).

Then, it is checked whether or not there is a keyboard event (step S13). That is, by checking the first byte (byte 0) of the event data read from the event queue, it can be checked whether the event data is key-on or key-off. Specifically, byte 0
Is 080H (the last digit "H" indicates a hexadecimal number; the same applies hereinafter) or 090H. If it is determined that the event is a keyboard event, keyboard event processing is performed (step S14).
Details of this keyboard event processing will be described later. After that, the process branches to step S21 and the same processing as described above is repeated.

If it is determined in step S13 that the event is not a keyboard event, then it is checked whether or not it is a panel event (step S15). That is, by checking the first 2 bytes (bytes 0 and 1) of the event data read from the event queue, it is checked whether or not the event data is tone color change, pitch change, monitor change, or ensemble state change. Specifically, byte 0 is 0
Whether A0H or byte 0 is 0B0H and byte 1 is any of 000H to 002H is checked. If it is determined that the event is a panel event, panel event processing is performed (step S16). Details of this panel event process will be described later. After that, the process branches to step S21 and the same processing as described above is repeated.

If it is determined in step S15 that the event is not a panel event, it is then checked whether or not it is a volume event (step S17). That is, the first 2 of the event data read from the event queue
By examining the bytes (bytes 0 and 1), it is determined whether or not the event data is a volume change event.
Specifically, byte 0 is 0B0H, and byte 1
Is 003H. If it is determined that the event is a volume event, volume event processing is performed (step S18). Details of this volume event processing will be described later. afterwards,
The process branches to step S21, and the same processing as described above is repeated.

If it is determined in step S17 that the event is not a volume event, then serial reception (S
(IO) It is checked whether or not the event (step S).
19). That is, by checking the first byte (byte 0) of the event data read from the event queue,
Whether or not the event data is a serial reception event is checked. Specifically, it is checked whether or not byte 0 is 0F0H. If it is determined that the event is a serial reception event, serial reception event processing is performed (step S20). Details of this serial reception event processing will be described later. After that, the process branches to step S21 and the same processing as described above is repeated. Also, if it is determined in step S19 that the event is not a serial reception event, the process proceeds to step S21 and the same processing as described above is repeated.

As described above, in the main routine, various functions as an electronic musical instrument are realized by repeatedly looping various processes based on the event data read from the event queue.

In the above embodiment, the scan processing of the volume switch 14 is configured to be performed as a part of the main routine. However, for example, in the timer interrupt processing generated every 1 millisecond described above, FIG. By executing the processing shown in the flowchart of A), the timer switch may be used as a trigger to scan the volume switch 14 and set it in the event queue. Also,
The signal of the conversion operation end of the A / D converter 60 is used as an interrupt signal for the CPU 10, and the interrupt signal is used as a trigger to execute the processing shown in the flowchart of FIG. It may be configured to go and set in the event queue. With such a configuration, the process of step S21 of the main routine shown in FIG. 4 is unnecessary.

(2) Keyboard Event Processing Next, details of the keyboard event processing performed in step S14 of the main routine will be described with reference to the flowchart of FIG.

In the keyboard event processing, it is first checked whether or not it is an on event (step S30). That is, whether the event data is a key-on event,
That is, it is checked whether or not byte 0 of the event data is 080H. When it is determined that the event is a key-on event, the key-depression event process of step S31 and thereafter is performed.

In the key-depression event process, first, a process of determining an oscillator to be used for sounding, a so-called assigner process is performed (step S31). That is, if there is an oscillator that is currently unused, use that oscillator for sounding,
On the other hand, if there is no oscillator that is currently unused, it is decided to stop sounding by any one of the oscillators according to a predetermined rule and use that oscillator for sounding.

Next, the pronunciation parameters are created (step S32). That is, the player number and the key number included in the key-on event data, the tone color number currently set in the tone color buffer, the tone change value set in the tone volume buffer, the volume data set in the volume buffer, etc. Is stored in the assignment memory corresponding to the determined oscillator, and a tone generation parameter including, for example, a waveform address, a frequency number, envelope data, a filter coefficient and the like is generated based on each of these data. This tone generation parameter can be configured such that various tone color parameters are created in advance and stored in the ROM 11 and read out according to the key number, tone color number, volume data, and the like.

Next, the tone generation parameter is set to the above-mentioned determined tone generation channel of the SPU 17 (step S
33). As a result, a digital tone signal is generated in the tone generation channel of the SPU 17 and sent to any one of the selectors 20, 21 or 22 corresponding to the player number in the assignment memory and the digital mixer 19. After that, the process returns from this keyboard event processing routine and returns to the main routine.

As described above, the analog tone signal of the section having the key-on event is changed to the selectors 20 to 22,
It is output from any of the headphone output terminals HP1, HP2, HP3 via any of the D / A converters 24-26 and the amplifiers 29-31. The digital tone signal mixed by the digital mixer 19 is converted into an analog signal by the D / A converter 28, further amplified by the amplifier 32, and output from the speaker output terminal SP. Further, if the section having the key-on event is selected by the selector 23, the analog tone signal of the section having the key-on event is output from the monitor output terminal MON.

On the other hand, if it is determined in step S30 that the event is not the on event, it is recognized that the event is the key off event, and the key release event process of step S34 and the subsequent steps is performed.

In the key release event process, first, a process of searching for an oscillator to be muted is performed (step S34). That is, the tone generation channel having the key number and the player number of the released key included in the key-off event data is found by searching the assignment memory. Next, silencing data is created (step S
35). That is, envelope data that is attenuated at a predetermined speed is generated.

Next, the muffling data is set to the channel searched for by the SPU 17 (step S3).
6). As a result, an attenuating envelope is added to the digital tone signal generated in the tone generation channel of the SPU 17, and the analog tone signal being sounded is attenuated to mute. After that, the process returns from this keyboard event processing routine and returns to the main routine.

(3) Panel Event Processing Next, details of the panel event processing performed in step S16 of the main routine will be described with reference to the flowcharts of FIGS. 6 and 7.

In the panel event process, it is first checked whether or not the event is a tone color change event (step S4).
0). That is, whether or not the event data is a timbre change event, that is, byte 0 of the event data is 0A0H.
Is checked. When it is determined that the event is a tone color change event, tone color change processing is performed (step S41). The details of this tone color changing process are shown in FIG.
This is shown in the flowchart of (A).

In the tone color changing process, first, the tone color buffer and the pitch buffer are changed (step S4).
10). That is, the tone color number included in the second byte (byte 1) of the tone color change event data is set in the tone color buffer. As a result, the tone color at the time of sounding is changed. Further, in the pitch buffer, a pitch change value set for each tone color is set. In sounding, the pitch is changed according to the change value stored in the pitch buffer, and the transpose function is realized.

Next, the pitch change message is stored in the serial transmission buffer (step S411). That is, for example, a transpose MIDI message is created, written in the position indicated by the write pointer of the serial transmission buffer, and then the write pointer is incremented.
As a result, when the timbre is changed, a message for transmitting the transpose value determined for each timbre is sent to the external device, so that the electronic musical instrument and the external device can be matched with each other.

Then, the tone color change message is stored in the serial transmission buffer (step S412). That is, for example, a program change MIDI message is created, written in the position indicated by the write pointer of the serial transmission buffer, and then the write pointer is incremented. After that, the process returns from the tone color changing process routine to the panel event process routine, and the panel event process routine also returns to the main routine. The tone color change and pitch change messages set in the serial transmission buffer are output to an external device via the serial interface 16 in an interrupt process described later.

If it is determined in step S40 that the event is not a tone color change event, it is then checked whether or not it is a pitch change event (step S42). That is, it is checked whether or not the event data is a pitch change event, that is, whether or not byte 0 of the event data is 0B0H and byte 1 is 000H. When it is determined that the event is a pitch change event, a pitch change process is performed (step S43). The details of this pitch change process are shown in the flowchart of FIG.

In the pitch changing process, the pitch buffer is first changed (step S430). That is, the change value included in the third byte (byte 2) of the pitch change event data is set in the pitch buffer. In sounding, the pitch is changed according to the change value stored in the pitch buffer. With this, the transpose function is realized.

Next, the pitch change message is stored in the serial transmission buffer (step S431). That is, for example, a transpose MIDI message is created, written in the position indicated by the write pointer of the serial transmission buffer, and then the write pointer is incremented.
After that, the process returns from the pitch changing process routine to return to the panel event processing routine, and the panel event processing routine also returns to return to the main routine. The pitch change message set in the serial transmission buffer is output to an external device via the serial interface 16 in an interrupt process described later.

If it is determined in step S42 that the event is not a pitch change event, it is then checked whether or not it is a monitor change event (step S44).
That is, it is checked whether or not the event data is a monitor change event, that is, whether or not byte 0 of the event data is 0B0H and byte 1 is 001H. If it is determined that the event is a monitor change event, monitor change processing is performed (step S45). Details of this monitor change processing are shown in the flowchart of FIG.

In the monitor changing process, first, the monitor buffer is changed (step S450). That is, "1" is added to the contents of the monitor buffer. Then, if the addition result exceeds "2", it is cleared to "0". That is,
The contents of the monitor buffer are updated each time the monitor switch is pressed (whenever the monitor change event data appears).
It is controlled so as to circulate “0 → 1 → 2 → 0 → ...”.
The contents of the monitor buffer are defined so that the musical tones of section A are monitored by "0", section B by "1", and section C by "2".

In the monitor buffer changing process, "1" may be subtracted from the contents of the monitor buffer, and "2" may be set when the subtraction result becomes smaller than "0". In this case, the contents of the monitor buffer circulate as "2 → 1 → 0 → 2 → ..." each time the monitor switch is pressed (every time event data of monitor change appears). Further, it may be configured that a predetermined switch selects whether to increase or decrease the contents of the monitor buffer.

Then, the contents of the monitor buffer are output to the monitor port (step S451). That is, the contents of the monitor buffer are supplied to the S input terminal of the selector 23 via the monitor port (not shown) of the CPU 10. As a result, one of the sections is selected according to the contents of the monitor buffer, and the analog tone signal of the selected section is output to the outside via the monitor output terminal MON. The function to monitor the musical sound of the section has been realized.

Then, the monitor change message is stored in the serial transmission buffer (step S452). That is,
Data in which the contents of the monitor buffer are set in byte 2 of the monitor change event data is created, and for example, a monitor change MIDI message is created based on this data and written to the position indicated by the write pointer of the serial transmission buffer. Then, the write pointer is incremented. Thereafter, the monitor change processing routine returns to return to the panel event processing routine, and the panel event processing routine also returns to return to the main routine. Here, the monitor change message set in the serial transmission buffer is
It is output to an external device via the serial interface 16.

If it is determined in step S44 that the event is not a monitor change event, it is then checked whether or not it is an ensemble state change event (step S4).
6). That is, whether or not the event data is an ensemble state change event, that is, byte 0 of the event data is 0B.
It is checked whether it is 0H and byte 1 is 002H. When it is determined that the event is the ensemble state change event, ensemble state change processing is performed (step S
47). The details of this ensemble state changing process are shown in the flowchart of FIG.

In the ensemble state changing process, first, the ensemble buffer is changed (step S470). In other words, the contents of the ensemble buffer are displayed each time the ensemble state changeover switch is pressed (every time the ensemble state change event data appears)
It is controlled so as to invert “0 → 1 → 0 → ...”. The contents of the ensemble buffer are defined so that, for example, "0" outputs each section, and "1" outputs each tone signal in the ensemble state to the headphone output terminals HP1 to HP3.

Then, the contents of the ensemble buffer are output to the ensemble port (step S471). That is, the contents of the ensemble buffer are supplied to the S input terminals of the selectors 20 to 22 through the unillustrated ensemble port of the CPU 10. As a result, either the tone signal of each section or the tone signal in the ensemble state output by the digital mixer 19 is selected according to the contents of the ensemble buffer, and the headphone output terminal HP is selected.
It is output to the outside via 1 to HP3. As a result, the performer can select and listen to either the musical sound played by him or the musical sound in the ensemble state.

Next, the ensemble state change message is stored in the serial transmission buffer (step S472). That is, data in which the contents of the ensemble buffer are set to byte 2 of the ensemble state change event data is created, and based on this data, for example, an ensemble state change MIDI message is created and indicated by the write pointer of the serial transmission buffer. Write in position. Then, the write pointer is incremented. Then, the routine returns from the ensemble state change processing routine and returns to the panel event processing routine, and the panel event processing routine also returns and returns to the main routine. The ensemble state change message set in the serial transmission buffer is output to an external device via the serial interface 16 in an interrupt process described later.

When it is determined in step S46 that the event is not the ensemble state change event, the panel event processing routine is returned to the main routine without performing any processing.

(4) Volume Event Processing Next, details of the volume event processing performed in step S18 of the main routine will be described with reference to the flowchart of FIG. 8 (B).

In the volume event process, first, the change value contained in byte 2 of the volume change event data is written into the volume buffer and the SPU 17
(Step S55). This allows SPU1
In 7, the digital musical tone signal having the volume according to the new volume data is generated.

Then, the contents of the volume buffer are stored in the serial transmission buffer (step S56). That is, for example, a control change MIDI message for changing the volume is created and written in the position indicated by the write pointer of the serial transmission buffer. Then, the write pointer is incremented. Then, the process returns from this volume event processing routine and returns to the main routine. Here, the volume change message set in the serial transmission buffer is output to an external device via the serial interface 16 in an interrupt process described later.

(5) Serial Reception Event Processing Next, details of the serial reception event processing performed in step S20 of the main routine will be described with reference to the flowchart of FIG.

In the serial reception event process, first, 1 byte is read from the serial reception buffer (step S60). That is, 1-byte data is read from the position indicated by the read pointer of the serial reception buffer and stored in the temporary buffer, and then the read pointer is incremented (+1).

Then, it is checked whether or not the fourth byte of data has been written in the temporary buffer (step S
61). When it is determined that the data of the 4th byte has been written, the contents of the temporary buffer are set in the event queue (step S62). That is, 4-byte data is written from the position indicated by the write pointer. Then, the write pointer is incremented (+4). Then, the routine returns from the serial reception event processing routine and returns to the main routine.

The event data set in the event queue in this serial reception event processing is set to other event data except the serial reception event data.

(6) Interrupt Process Next, the details of the interrupt process will be described with reference to the flowchart of FIG. The interrupt described here is issued from the serial interface 16 to the CPU 10, and there are two types of interrupts, a reception interrupt and a transmission interrupt.
The reception interrupt is generated when the serial interface 16 receives 1-byte data. The transmission interrupt is generated when the transmission of 1-byte data is completed.

FIG. 10A shows the serial interface 1
6 is a reception interrupt processing routine for a reception interrupt issued from 6 to the CPU 10.

When the reception interrupt occurs, the data received by the serial interface 16 is written into the serial reception buffer (step S70). That is, the data is written from the position indicated by the write pointer of the serial reception buffer. Then, the write pointer is incremented.

Next, event data for serial reception is created (see FIG. 13) and set in the event queue (step S71). That is, the data of the first byte and the fourth byte of the event data is generated to be 4-byte data, which is written as event data for serial reception at the position indicated by the write pointer of the event queue, and then Increment write pointer (+
4) Do. Then, the routine returns from this reception interrupt processing routine and returns to the original interrupted routine.

FIG. 10B shows the serial interface 1
6 is a transmission interrupt processing routine for a transmission interrupt issued from 6 to the CPU 10.

When a transmission interrupt occurs, first, the presence or absence of transmission data is checked (step S75). This is done by checking whether the values of the read pointer and the write pointer of the serial transmission buffer are the same. When it is determined that they are the same, the serial transmission buffer recognizes that it is empty, returns from this transmission interrupt processing routine, and returns to the original interrupted routine.

On the other hand, if it is determined that there is transmission data, that is, if the value of the read pointer is greater than the value of the write pointer, then the process of reading the transmission data from the serial transmission buffer is performed. (Step S76). Messages such as volume change (including volume data transmission in initialization processing), tone color change, pitch change, monitor change, ensemble state change, etc. are set in the serial transmission buffer.

Then, the transmission data is read from the position indicated by the read pointer of the serial transmission buffer and set in the serial interface 16 (step S7).
7). At this time, the read pointer is incremented.
As a result, the transmission data is transmitted to the external device via the serial interface 16. Then, the routine returns from this transmission interrupt processing routine and returns to the original interrupted routine.

As described above, according to this embodiment,
When the power is turned on, the setting state of the volume switch 14 is scanned to read the volume data, and the initial fixed value of the volume data set by the initial volume setting switch 100 is read, and these two data may be compared to make a difference. When the determination is made, the volume data is transmitted to the outside, and if they match, the volume data is not transmitted to the outside.
The electronic musical instrument on the receiving side can change its own volume by receiving volume data indicating the setting state of the volume switch 14 and writing this volume data in its volume buffer.

Therefore, by setting an appropriate value to the initial volume setting switch 100 by the operator, it is possible to avoid the useless data transmission or the inconvenient data transmission if transmitted as in the conventional case. In addition to this, it is possible to set an arbitrary volume value to an externally connected electronic musical instrument.

In the above embodiment, the electronic musical instrument having three sections has been described, but the number of sections is not limited to this and may be any number. In addition, the present invention can be applied not only to an electronic musical instrument having a plurality of sections but also to a normal electronic musical instrument having only one section.

Further, in the above embodiment, as an example of transmitting the information indicating the setting state of the operator to the external device when the power is turned on, the volume data set by the volume switch 14 is transmitted to the external device via the serial interface 16. However, the present invention is not limited to this.

According to the present invention, for example, the tone color number set by the tone color switch, the pitch change value set by the transpose switch, the tuning data set by the input means (not shown), and various other initial settings are required. Even in the case of transmitting the above data to the external device, it can be realized by the same configuration and operation as those in the above embodiment.

[0140]

As described in detail above, according to the present invention,
It is possible to provide an initial setting information transmitting device for an electronic musical instrument, which can transmit the initial setting information to the outside when necessary when the power is turned on.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of an electronic musical instrument to which an initial setting information transmission device according to an exemplary embodiment of the present invention is applied.

FIG. 2 is a circuit diagram showing a detailed configuration of a panel switch, a display, and a keyboard switch portion of an embodiment of the present invention.

FIG. 3A is a circuit diagram showing a detailed configuration of a volume switch according to an exemplary embodiment of the present invention. (B) is a diagram showing in detail the configuration of each switch matrix of the keyboard switch and the panel switch of the embodiment of the present invention. (C) is a figure which shows in detail the structure of the LED matrix of the display of the Example of this invention.

FIG. 4 is a flowchart showing a main routine of the embodiment of the present invention.

FIG. 5 is a flowchart showing keyboard event processing according to the embodiment of this invention.

FIG. 6 is a flowchart showing a panel event process according to the embodiment of this invention.

FIG. 7A is a flowchart showing a tone color changing process according to the embodiment of the present invention. (B) is a flowchart showing a pitch changing process of the embodiment of the present invention. (C) is a flowchart showing a monitor changing process according to the embodiment of the present invention. (D) is a flowchart showing the ensemble state changing process of the embodiment of the present invention.

FIG. 8 is a flowchart showing volume event processing according to the embodiment of this invention.

FIG. 9 is a flowchart showing serial reception event processing according to the embodiment of this invention.

FIG. 10A is a flowchart showing a reception interrupt process according to the embodiment of the present invention. (B) is a flowchart showing a transmission interrupt process according to the embodiment of the present invention.

FIG. 11 is a diagram showing a configuration of an initial volume setting switch.

FIG. 12 is a flowchart showing an initialization process according to the embodiment of this invention.

FIG. 13 is a diagram showing a format of event data according to the embodiment of this invention.

[Explanation of symbols]

 10 CPU 11 ROM 12 RAM 13 Panel Switch 14 Volume Switch 15 Keyboard Switch 16 Serial Interface 17 SPU 18 Waveform Memory 19 Digital Mixer 20-23 Selector 24-28 D / A Converter 29-33 Amplifier 40 Address Bus 41 Data Bus 50, 55 latch 51,53,61 gate 52,54,56 resistance 60 A / D converter 100 initial volume setting switch 130 display VR variable resistor SW open / close switch D diode LED light emitting diode SW0-SW7 open / close switch R0-R7 resistor

Claims (2)

[Claims] 1. An initial manipulator scanning means for scanning the setting condition of the manipulator when the power is turned on, and whether or not to output information indicating the setting condition of the manipulator obtained by the initial manipulator scanning means to the outside. And a transmitting unit that transmits the information indicating the setting state to the outside when the determining unit determines that the information should be output to the outside. An initial setting information transmission device for an electronic musical instrument. 2. The structure according to claim 1, further comprising storage means for storing predetermined information, wherein the determination means is obtained by the predetermined information stored in the storage means and the initial manipulator scanning means. An initial setting information transmitting device for an electronic musical instrument, characterized by comparing information indicating a setting state of an operator and determining that the information indicating a setting state of the operator should be output to the outside when these are different from each other. .