JP3092625B2 - Electronic musical instrument network system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument that can be variously expanded using a network.

[0002]

2. Description of the Related Art Conventionally, a plurality of electronic musical instruments are connected to each other to form an electronic musical instrument network system.
IDI is known. The MIDI interface is a common standard for transmitting automatic performance data and the like, and is used to unidirectionally transmit performance data such as key codes from one of a plurality of musical instruments distributed over a network to another. Is made possible. However,
In such a conventional system using MIDI, in order to connect devices other than musical instruments, such as a computer, a printer, and a disk device, to a network, special control software for each device and a computer for executing the software are used. There was the disadvantage of requiring a system.

Therefore, Japanese Patent Application Laid-Open No. Sho 62-129 shown in FIG.
An electronic musical instrument network system as described in JP-A-889-89 has been proposed. This electronic musical instrument network system includes a controller 201 also serving as an electronic musical instrument.
And another electronic musical instrument 202 and a floppy disk 203
And the printer 204 is connected to the network 205. The controller 201 includes a processor 206, a read only memory (ROM) 207 for a basic system, a random access memory (RAM) 208 for a basic system, and a RAM 209 for an expansion device.
-1, 209-2, 209-3..., Sound source circuit 21
0, an output amplifier 211, a speaker 212, a panel interface 213, a console panel 214, a bus interface 215, a control interface 216, an instruction panel 217, a start information input section 218, and an internal bus 219 connecting these circuits. .

In the circuit shown in FIG. 33, when a performance is performed by operating the console panel 214 or the like, the controller 201 transmits the performance data to the panel interface 2.
The data is input to the basic RAM 208 and the tone generator 210 via the PC 13. Then, a predetermined sound signal is generated by the sound source circuit 210, amplified by the output amplifier 211, and output from the speaker 212. At this time, the performance data input from the console panel 214 is subjected to various processes such as waveform operations by the processor 206 as necessary, and then input to the tone generator 210. The processor 2
Reference numeral 06 performs a processing operation based on an operating system or the like stored in the ROM 207 for the basic system. Also,
The basic system RAM 208 is used for primary storage of performance data and other various work areas.

[0005] Next, FIG. 34 shows a procedure for exchanging information in the electronic musical instrument network system shown in FIG. 33. However, the master unit shown in this figure is the controller 201, and all other devices connected to the network 205 are slave units. When the master unit and the slave unit are powered on, the slave unit detects whether or not transmission is possible on the network, determines that transmission is possible when there is no signal being transmitted on the network, and transmits a registration request signal to the network. Send up.
The master unit waits for a registration request signal from the slave unit. When the registration request signal is received, the master unit requests the slave unit that has transmitted the registration request signal to transmit an identification number (ID) and a control program. . The slave unit receives this and transmits the ID and the control program. The ID and the control program are loaded into the expansion device memory of the master unit. At this time,
The parent device checks whether there is a reception error, and if there is a reception error, displays an error and cancels the registration process of the child device.

In this manner, the master unit downloads the control programs of all the slave units, and the master unit executes the control programs to transmit various kinds of instruction information to the slave units. Control. Therefore, under the control of the controller 201, for example, performance data can be stored in the floppy disk 203 or printed by the printer 204.

[0007]

In such a configuration, although various types of expansion can be performed using a network, all the processing is concentrated on the controller, so that the load on the controller increases. However, there has been a problem that the capacity of the entire system can be increased only to the capacity that can be processed. Further, even if another electronic musical instrument that can be a controller is connected to the network, there is a problem that resources such as processing capability on the electronic musical instrument cannot be effectively used. Therefore, an object of the present invention is to provide an electronic musical instrument network system that can be variously expanded and that can effectively use resources connected on a network.

[0008]

In order to achieve the above object, the present invention provides a large system by freely combining units by automatically distributing a plurality of processes to each unit connected to a network. It is intended to be built.

According to the present invention, a plurality of processes conventionally performed by one electronic musical instrument are automatically distributed to each unit connected to a network, thereby enabling various extensions. Thus, an electronic musical instrument network system that can effectively use resources on the network can be realized.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a conceptual diagram of the overall configuration of an electronic musical instrument network system according to the present invention. The electronic musical instrument network system includes a program server module 10, a main unit 20, an assigner unit 30, an automatic performance module 40, a scan module 50, and the like. External communication module 60, sounding unit 7
The electronic musical instrument network system is configured by connecting the audio output units 120 to the network circuit 140. However, in the following description, a unit that performs processing only with a single unit is also referred to as a module. The processes assigned to the respective modules are not the processes assigned in advance except for the main unit 20, but are the processes assigned by the main unit 20 when the system starts up, as described later.

These modules are composed of versatile units, can dynamically configure the system, and can easily change the system to improve performance and the like. A general-purpose CPU unit in each module is used, and a processing program corresponding to processing assigned to the CPU is transferred prior to the start of processing of performance information, so that the CPU unit is provided. The assigned module performs the assigned process. These modules may be physically separated from each other or may be locally concentrated.In short, they may be interconnected by a network, and thus have various forms from a large system to a small system. An electronic musical instrument network system can be constructed.

After the processing program is transferred to each module, each module issues a command via the network. Since the destination address is specified in the command, the module at that address receives the command and performs the corresponding processing. As an example, in a general key pressing process, key pressing information detected by the scanner unit 51 is first transferred to the assigning unit 30. The assigning unit 30 searches for a vacant channel among the sounding units 70 to 110 under its own management,
The received key press information is transferred to 110. The sounding units 70 to 110 create digital data of musical tones corresponding to the transferred key press information, and transfer the digital data to the audio output unit 120 via the network circuit 140. The audio output unit 120 correctly rearranges the received digital data on the time axis (because the digital data has been subjected to various types of modulation in order to make the transmission over the network efficient) and transfers it to the sound system 130. Then, the sound is generated from the sound system 130 as a final analog musical sound.

In this case, when it is desired to increase the number of sounding channels, it is only necessary to add sounding units to the network.
The added sounding unit is automatically recognized by the main unit 20, and accordingly, the assigning unit 30
Is changed. Also, due to some circumstances, the unit 3 that has realized the assignment function until now
If it is necessary to disconnect the network unit 0 from the network, for example, the scanner unit 5 having a relatively large processing capacity can be used.
1, a new assignment program may be assigned to perform both scan and assignment processing in one unit. As described above, in the electronic musical instrument system according to the present invention, by assigning a program to a general-purpose unit, the system can be expanded or reduced, and functions are appropriately allocated. The processing will be performed.

Next, each module will be described. In the configuration shown in FIG.
Is composed of a program server unit 11 and an auxiliary storage device 12 for storing programs. According to a program request from the main unit 20, a required program is read from the auxiliary storage device 12 and transferred to the main unit 20. The main unit 20 controls the entire musical instrument system, checks the connection status of each module at the time of starting the system, reads out a necessary program for each module from the program server module 10, and transfers the program. It should be noted that the connection status of each module is checked and the program is distributed only when the entire system is started up.However, these checks are performed while the system is operating, and the system resources are always used. Optimal distribution can also be performed.

The assigning unit 30 performs a process of assigning the sounding request received by the musical instrument system to the sounding units 70 to 110. The assignment unit 30 performs not only the assignment of the sounding units 70 to 110 but also the assignment of the sounding channels in the respective sounding units 70 to 110. Therefore, the assignment unit 30 stores information of each sounding channel as a table. Also, since the sound assignment process has a large effect on the time until the sound of a musical tone, the assignment of a plurality of units performing the assignment process and the assignment process itself is performed so that the sound is distributed to a plurality of units and processed at a high speed. A meta-assignment unit may be prepared.

The meta-assignment unit determines the contents of the sounding request, determines an assigning unit to which the received sounding request is assigned, and transfers the sounding request to the assigning unit. Each assigning unit assigns the sounding request transferred from the meta-assigning unit to the sounding channel of the actual sounding unit. For example, when a keyboard module and an automatic performance module are connected to an instrument system, a sound generation request from each module is temporarily transferred to a meta-assignment unit, and a sound generation request from the keyboard module and a sound generation request from the automatic performance module are transmitted. Are assigned to different assigning units by the meta-assigning unit.

Generally, in the assigning process, when searching for a free channel or checking the status of each sounding channel in the truncation process, a process of sequentially operating all channels is indispensable. Therefore, as the number of sounding channels increases, these processes take more time. Therefore, by dividing the assignment process by the meta-assignment unit as described above, it is possible to reduce the time required for sound assignment. As a method of dividing a pronunciation request in the meta-assignment unit, a method of dividing at the source of information as described above, a method of dividing at even and odd key codes, a method of dividing at high range and low range, MIDI There are various modes such as a method of dividing by channel number and a method of dividing by tone color, and any of them may be adopted as desired.
If the overhead of communication in the meta-assignment unit is small, the meta-assignment can be performed in multiple stages by combining these division methods. By doing so, the time required for the assignment process can be further reduced.

In addition to the above, there is a method of dividing a sounding request, such as a normal sounding assignment, by assigning to an assigner having a vacant channel among a plurality of assigners under the control of the meta assigner. In this case, it takes time to directly detect the sounding channel of the assigner managed by the meta assigner, so the assigner informs the meta assigner of whether there is a free channel or the number of the free channels. Meta assigner is an assigner that has free channels among the assigners it manages,
Alternatively, a sound generation request is transferred to an assigner having a large number of vacant channels, thereby enabling efficient sound generation assignment. The automatic performance module 40 includes an automatic performance unit 41 and an auxiliary storage device 42. The automatic performance unit 41 reads out performance data stored in the auxiliary storage device 42 in response to a request from the main unit 20, and generates a sound. The request is transmitted to the assignment unit 30 as a request.

The scan module 50 includes a scan unit 51 and a key / panel switch circuit 52. The scan unit 51 scans the key / panel switch circuit 52 and detects a key event and a panel switch event. The detected key event is transmitted to the assigning unit 30 together with a panel switch event as a sounding request. In an instrument system, one assign unit is
If there is only one, or if there are multiple assign units, there is only one meta-assign unit, so the scan unit 51 only needs to send a sounding request to that unit, and the contents of the assign unit and sound unit You don't need to know anything. The external communication module 60 includes an interface unit 61 and an interface circuit 62, and the interface circuit 62 uses a MIDI interface generally used for electronic musical instruments. The external communication module 60 is provided with MIDI provided from outside the musical instrument system.
Among the signals, a sounding event is transmitted to the assigning unit 30 as a sounding request. The control information of the MIDI signal can be transferred to the main unit 20 to control the musical instrument system.

The sounding units 70 to 110 are modules for sounding having a function of communicating with a network.
It is not necessary that the pronunciation style, the number of simultaneous pronunciations, and the like of each of the sounding units 70 to 110 be unified. If the sounding unit is of a waveform memory type, the tone data is generated by a memory storing the waveform inside the unit.
In the case of the FM sound source system, the simulation sound source system using a DSP, or the like, musical sound data is generated by a microprogram. These waveform data and a microprogram for simulation can be provided in advance for each unit, but can also be transferred from the program server module 10 when the musical instrument system is started. The main unit 20 supplies the assigner unit 30 with an assignment program according to the tone generator system and the number of sound channels of each sound generator unit when the musical instrument system is started up.

The sounding units 70 to 110 which have received the sounding request from the assigning unit 30 start synthesizing musical tones on the specified sounding channel, and transmit the synthesized digital musical sound data to the audio output unit 120 which will be described later. To send over. Thereby, the sounding units 70 to 1 are placed on the network circuit 140.
10 are dispersed and, furthermore, even if their physical locations are far apart, all sounding units 70-110
Is collected in the audio output unit 120, so that it can be easily used for the final analog musical sound. By the way, when the speed of the network circuit 140 is low or the network itself is not spread over a wide range, for example, the entire network system shown in FIG.
When realized within the main body of one electronic musical instrument, the outputs of all the sounding units 70 to 110 are connected to the network circuit 14.
Instead of passing through 0, it is also possible to directly collect and mix by a mixing circuit 150 shown by a broken line.

The audio output unit 120 combines the digital data transferred from each of the sounding units 70 to 110 as described above, and transmits the combined digital data to the sound system 130 as soundable digital information. The network circuit 140 connects the respective modules and units, and may be of any type such as a bus type or a ring type. Note that a physical address and a logical address are set for each module on the network, and the physical address is a number unique to each module and is uniquely determined and cannot be changed. The logical address is determined when the instrument system starts up,
One address is assigned to one process. For example, when realizing two processes of assignment and automatic performance with one module, the physical address is one,
It will have two logical addresses. The logical address is configured in a hierarchical manner, with higher-level data indicating the type of processing assigned to the module, and lower-level data indicating the number of each module of the same type. Thus, when information is sent to all the modules that perform a specific process, it is possible to use a broadcast that does not need to send data individually by making determination only at the upper level. For example, in the case of electronic musical instruments, when the system causes an error, for example, sometimes all sounds are forcibly terminated.
In such a case, instead of sending data individually to all the sounding modules, the sounding from all the sounding modules should be stopped by transmitting a broadcast message for forced termination of sounding specifying the type of sounding module. Can be.

Next, among the sounding units 70 to 110,
For example, FIG. 2 shows a block diagram of a configuration in a case where the sound generation unit 70 is of a sound source system using a DSP. In this figure, an interface 71 is connected to a network circuit 140, and takes in only packets for which a physical address or a broadcast address set for itself is specified from among packets flowing on the network. When transmitting a packet from the sounding unit 70, a packet is created in accordance with various data specified by the CPU 74 described later, and transmitted to the network circuit 140. The DSP 72 synthesizes a musical tone in accordance with the microprogram stored in the DSP RAM 73. The microprogram is supplied from the program server module 10 when the musical instrument system is started up, and is changed by storing a new microprogram when it is desired to switch the timbre determined by the microprogram.

The CPU 74 manages the interface 71 and controls the DSP 7 in accordance with the control program stored in the RAM 76 supplied from the program server module 10.
In addition to the control of step 2, the program for starting up at the time of the initialization stored in the ROM 75 is executed. In the tone synthesis by the DSP, a simulation sound source for simulating a natural musical instrument, a waveform memory sound source using the RAM 76 as a waveform memory, and a modulation type FM sound source can be realized depending on the type of microprogram. FIG. 3 is a block diagram showing a configuration in which, for example, the sound generation unit 80 of the sound generation units 70 to 110 is of a waveform memory type. The difference between the block diagram shown in this figure and the block diagram shown in FIG.
Instead of the tone synthesis circuit 82 and the DSP RAM 7
3 is provided with a waveform ROM 83.
As described above, a waveform memory type sound source can be realized by using the DSP 72, but a dedicated board using hardware is more advantageous in various points.
Further, as the tone synthesis circuit 82, a waveform memory tone synthesis LSI can be used.

FIG. 4 is a block diagram showing the configuration of the general-purpose unit. In this figure, an interface 31 is an interface for connecting to a network circuit 140, and external devices such as a key / panel switch circuit 52 in the scan unit 51 are connected to an external device connection port 32.
Connected to. The ROM 34 stores a program for starting at the time of initializing, and the like. When the general-purpose unit 30 is used as an assigning unit for a specific purpose, the program read from the program server module 10 is stored in the RAM 35. It is stored and control is performed based on it. The RAM 35 is also used as various storage areas when the CPU 33 executes processing. The configuration of this general-purpose unit is common to each module. However, only the unit that should become the main unit is RO
The program stored in M34 is different from other general-purpose units so that the program starts as a main unit.

Next, FIG. 9 shows an outline of the operation of the entire electronic musical instrument network system of the present invention. As shown in this figure, when starting up the network system, the main unit (Mein Unit) communicates with the slave unit (Slave Unit) which is a general-purpose unit. This communication is
When the system is started, first, the slave unit sends an “Add Req” (address request) command as a broadcast message on the network, and waits for a packet from the main unit. The program that responds to this command has only the main unit
4, the main unit responds to this command, and returns an "ACK" (confirmation) command by setting the physical address of the slave unit. Note that “Add” sent from the slave unit
The "Req" command is transmitted in the form of a packet. An example of this packet is shown in Fig. 6. However, in this packet, when the system is started up, neither the destination physical address nor the logical address is known, so The main unit is in a waiting state for this packet from the slave unit at the time of start-up, and transmits the physical code of the source from the received packet. I know the address.

When the slave unit receives the "ACK" command from the main unit, the slave unit can confirm that the main unit is operating, and can know the physical address of the main unit from the transmitted packet. The slave unit transmits the data of the slave unit to the main unit in the form of the packet, for example, data having a key switch connected as an external device and having a processing speed of about this. In this way, the main unit can know the data of the slave unit, but since there are a plurality of slave units, the above operation is performed on each slave unit, so that the data from each slave unit is collected and collected. Based on the data, for example, the function of the unit to which the key switch is connected is determined by the scanner, thereby determining the function of each slave unit, and a program and a logical address for performing the processing of the function. To each slave unit. The slave unit performs processing according to the received program. The main unit performs such processing for all slave units that have transmitted the command.

As described above, each slave unit having no logical address and having no program for realizing its own function starts up via the network. As a result, the function expansion of the musical instrument system can be realized by simply connecting the general-purpose unit to the network, and the program is distributed according to the connected unit, which places a burden on the player. Without distributing the work load.

Next, each flowchart will be described. FIG.
0 is one of the basic job processing programs stored in the ROM in the main unit 20, and is a flowchart of a main unit boot process that is read from the ROM and executed when the main unit 20 starts up. In this process, first, initialization of a network interface is performed in step S100, scanning of the interface is performed in step S110, and detection of a packet from the slave unit is performed. Steps S110 and S120 are repeated until the packet is detected. When the packet is detected, a job (job) corresponding to the command (COM) is executed in step S130. Then, step S is performed until a predetermined time elapses.
The processing from step 110 to step S140 is repeated. This is because a command relating to the initialization of the musical instrument system is received only for a predetermined time from the start of the main unit 20. Here, it is assumed that each unit connected to the network starts up almost at the same time, and a unit that has established communication with the main unit within a predetermined time from the time when the main unit started up is regarded as a resource of the musical instrument system. Become recognized.

When a predetermined time has elapsed, step S150 is performed.
In step S160, communication with a program server module storing various programs is established. In step S160, a function assignment process for supplying a control program or the like is performed according to the status of each unit on the network. The process ends. The jobs in step S130 include an address request job (Addr Req job) process shown in FIG. 11 and an initial job (INIT job) process shown in FIG. In the address request job process shown in FIG. 11, the source physical address included in the packet from the slave unit received by the main unit is set as PADDR in step S200, and the "ACK" signal is set as the transmission command SCOM in step S210. Then, in step S220, the above S
Send COM to PADDR on the network. By receiving this, the slave unit can know that the main unit has started normally and the physical address of the main unit. It should be noted that only one main unit exists in the system, and its logical address is "0.0".

In the initial job processing shown in FIG. 12, DEV and SPEED data transferred from the slave unit together with the "INIT" command are stored in a buffer. DE
V is information indicating a device connected to each unit, and SPEED is processing speed data of the CPU of each unit, which is used as a reference when assigning processing. The main unit determines what processing is to be assigned to each unit based on the information in step S160.
FIG. 8 shows a flowchart of the function assignment process in step S160. Step S400 of this process
Then, the information of each unit collected in step S310 shown in FIG. 12 is classified by device type. In the next step S410, it is determined whether there is at least one input device (for example, a keyboard, a MIDI interface, and the like) and one output device (sound generation unit). If they do not exist, they do not function as the musical instrument system, so the process branches to step S470, and the main unit boot process shown in FIG. 10 is started again. This makes it possible to incorporate information on units that have started up late.

If it is determined in step S410 that the operation as the musical instrument system is possible, step S41
The processing of each function of 5 or less is sequentially executed. First, audio unit processing is performed in step S415. In this process, the main unit reads the audio unit program read from the program server module,
In addition to setting the audio unit, the physical address of the audio unit is stored in the main unit, and the logical address is set. Storing the physical address in the main unit is performed by a TG (sound generation unit) described later.
This is because the physical address of the audio unit is needed in order to indicate where the TG outputs the output at the time of processing. Then, TG processing, assignment processing, KB processing, and panel processing described later with reference to FIG.
By S460, the function assignment process is sequentially performed and the function assignment process ends.

FIG. 14 is a flowchart of the TG process called in step S420 of FIG. In this process, the counter co is set to “1” in step S500.
Is set to The value of the counter co is used as lower-order data of the logical address, and "0" of the lower-order data is used for broadcasting, so that the counter is counted from "1". Next, the process proceeds to step S505, and it is determined whether or not the data of the sound generation unit that has not been processed remains in the buffer. In this case, the system is started up. Since it is confirmed in step S410 shown in FIG. 13 that one or more sounding units exist, the process proceeds to step S510, where DEV = “TG” from the buffer. One piece of information is extracted, and the physical address of the sounding unit is set to AD in step S515.
Set as DR.

Next, "Data Req" is transmitted as a transmission command SCOM in order to extract detailed information from this sounding unit.
"And set this SCOM to AD on the network.
Send to DR. Then, the SCOM is received by the sounding unit of the physical address extracted from the buffer, and the sounding unit transmits the sounding type of its own sounding unit and the data of the maximum number of sounds to the main unit. The sound generation type includes a waveform memory system, an FM sound source system, a DSP simulation system, and the like. The DSP simulation system generally requires a microprogram for sound generation. The main unit determines in step S535
Stores the tone type data transmitted from the tone generating unit as the TG TYPE of which the counter co is "1", and stores the maximum tone generation data as the CH Num of which the counter co is "1". Steps up to step S535 are steps for extracting data from the sound generation unit, and the next step S540.
Is a step of allocating a program to a sounding unit based on the extracted data.

In step S540, the stored TG
Take out the control program and microprogram corresponding to TYPE from the program server module and
Set as OG in the register. Further, step S5
At 42, the physical address of the audio unit stored in step S415 shown in FIG.
Set as O. In step S545, “Prog Load” is set as the transmission command SCOM, and in step S550, the logical address LADDR of this sounding unit is “3.co” (in this case,
"3.1" is set), and the SCOM, PROG, INFO, and LADDR are transmitted to ADDR on the network in step S555. And step S
Proceeding to 560, the value of the counter co is incremented by one and set to co + 1, the process returns to step S505, and the above processing is repeated until there are no unprocessed units. Thereby, “3. The logical address "co" is given to each sounding unit, and a control program and a microprogram corresponding to the sounding type and the maximum number of sounds of the sounding unit are supplied.

In the case where the information taken out from the sounding unit is recognized as the simulation sound source system using the DSP, for example, a microprogram for generating a piano tone is transferred.
This is to prevent no sound from being output when the power of the musical instrument is turned on. However, if the sound source is of the waveform memory type, no microprogram is required, so this process is not required. The upper data of the logical address is
The main unit is set to “0”, the keyboard is set to “1”, the panel switch is set to “2”, the sounding unit is set to “3”, and the MIDI interface is set to “3” as shown in the left end of the table shown in FIG. 4 ", the assigner unit is" 5 ", the audio unit is" 6 ", the program server module is" 7 ", and the unconnected one is" 8 ". By setting the data set by the counter co as low-order data in the high-order logical address, it is possible to set the logical address of a unit that performs the same processing (the high-order data of the logical address is the same). . Next, in step S560, the counter co
Is incremented to co + 1 and step S50
Returning to 5, the above processing is repeated until there are no unprocessed units.

Next, FIG. 15 shows a flowchart of the assigner process. The process of searching for an empty channel or the process of searching for the channel with the lowest volume when there are no available channels is essential. In this case, it is necessary to scan all the channels from the end, so if the number of channels increases, the assignment will increase. It takes time for Therefore, in such a case, the assignment process is divided to reduce the time required for the assignment. Here, first, check the units that can share the assignment function,
If the assignment can be made by one unit, assign the assignment program to that unit. However, when the number of sounding channels is large and the assignment cannot be performed by one unit, the sounding units are divided into a plurality of groups, and an assigner unit for each group and a meta-assigner unit that supervises the plurality of assigners are determined. , And assign each program. When assigning jobs,
Speed S of each module obtained in step S310
Depending on the PEED and the amount of work already assigned, the module is assigned to the module with the most margin.

That is, in step S600, the work amount of each unit capable of sharing the assignment is checked, and as a result, when it is determined in step S602 that the number of sound channels is small and one unit can process the sound, in step S603. The physical address of the unit is set as ADDR. Then, in step S604, the program of the single assigner is extracted from the program server module, and set as a PROG in the register. Next, in step S606, the TG type (TGTyp) of each sounding unit is set.
e), the number of channels (CH Num), the physical address and the logical address are set in the register as additional information INFO, and in step S608, the logical address LADDR of this assigner unit is set to “5.0”. , The transmission command SCOM in step S610
Is set to "Prog Load", and the SCOM, PROG, INFO, and LADDR are transmitted to ADDR on the network in step S612. Thereby, the assigner processing of the assigner constituted by a single unit becomes possible. The reason why the logical address is set to “5.0” is that it is not necessary to use the broadcast in the assigner, and the main assigner (when there is one assigner, the assigner becomes the main assigner) generates a sound generation request. This is because transmission is sufficient.

If it is determined in step S602 that one assigner has too much work, step S6
Proceeding to 14, the sounding units are divided into a plurality of groups according to the TG type of each sounding unit (TG) and the number of sounding channels. This division is performed, for example, by assigning a waveform memory method or by assigning a DSP simulation sound source method. Or hand performance (K
Any of the division methods, for example, division by assigning an automatic performance to (from B), or simply dividing into 1/2. Thus, the group number g of the divided group
In step S616, n is set to "1". In step S618, a unit to be assigned to the sound channel of this group number gn is determined. In step S620, the physical address of the assigned unit is set to A.
Set as DDR. Then, in step S622, a program required for the group number gn of the sounding unit is extracted from the program server module, and
Is set in the register.

Next, in step S624, the TG type of each sounding unit in the group number gn,
The number of channels (CH Num), the physical address and the logical address are set in the register as additional information INFO. Next, in step S626, the group number g
logical address LADDR of the assigner that assigns n
But "5. gn ”(in this case,“ 5.1 ”), and in step S628, the transmission command S
COM is set to “Prog Load”, and in step S612, the above SCOM, PROG, INFO, and LADDR are transmitted to ADDR on the network. Here, when there is a remaining group, the judgment is made in step S632, the group number gn is incremented to gn + 1, the process returns to step S618, and the above processing is repeated until there is no remaining group. When there are no more groups left,
Proceeding to step S636, meta-assigner processing is performed.

That is, in step 636, a unit to be meta-assigned is determined, and in step S638, the physical address of the meta-assign unit is set as ADDR. Then, in step S640, the meta-assigner program is extracted from the program server module and set as a PROG in the register. Next, in step S642, the physical address or logical address of each unit assigned as an assigner, and the assignment condition of each assigner are set in a register as additional information INFO. Next, the logical address LADDR of the meta-assigner is set to “5.0” in step S644, and the transmission command SCOM is set to “Prog Lo” in step S646.
ad ”, and in step S648, the above SCOM, P
ROG, INFO, LADDR on the network AD
Send to DR.

Thus, the processing of the meta assigner and the group assigner can be performed. FIG. 7 shows an example of a table of assignment conditions for the meta-assigner. The table in this figure includes, for example, a sound generation request from a keyboard (KB), a sound generation request from an automatic performance, MIDI 1 to 8 ch, M
The table is made up of a group obtained by dividing sound generation requests from IDIs 9 to 16 as assignment conditions, and physical addresses of assigner units to which the divided groups are assigned.

FIG. 16 is a flowchart of a KB (keyboard) process. Keyboards have various control types, for example, those with or without touch response function, those with or without after-touch function, and those with or without pitch bend wheel beside the keyboard. Since there is a keyboard, these data are extracted and a program is assigned according to the data. First, step S7
At 00, the counter co is set to "1". The value of the counter co is used as the lower data of the logical address, and since the lower data “0” is used for the broadcast, the counter co is counted from “1”.

Next, the flow advances to step S705 to determine whether or not data of a unit including a keyboard which has not been processed yet remains in the buffer. In this case, the system is started up, and step S4 shown in FIG.
In step S710, it is confirmed that one or more keyboards are present. Therefore, the process proceeds to step S710, where one piece of information with DEV = “KB” is extracted from the buffer, and in step S715, the physical information of the unit including the keyboard is obtained. Set the address as ADDR. Next, "Data Req" is set in the transmission command SCOM to extract detailed information from the unit including the keyboard, and this SCOM is transmitted to ADDR on the network. Then, the SCOM is received by the unit including the keyboard extracted from the buffer, and the unit including the keyboard returns the control type of the connected keyboard and the data of the operation device such as the wheel to the main unit. In step S735, the main unit stores the control type data transmitted from this unit as the KB TYPE of the counter value "1", and stores the operator data as the Cnt of the counter value "1". The above steps are processing for reading data from the keyboard, and the following steps are processing for assigning a program to the keyboard based on the extracted data.

That is, in step S740, a control program corresponding to the stored Kb TYPE and operator data Cnt is taken out of the program server module and set as a PROG in a register. Further, in step S742, the logical address LADD of this unit is
As R, "1. co "(in this case," 1.1 ")
In step S745, the physical address of the main assigner stored in the assigner process shown in FIG. 15 is set in the register as additional information INFO. In this case, the main assigner is the physical address of the unit when the assigner is composed of a single unit, and is the physical address of the meta-assigner when the assigner is composed of a plurality of units.

Next, in step S750, "Prog Load" is set as the transmission command SCOM, and in step S755, the above-mentioned SCOM, PROG, INF is set.
O, LADDR are transmitted to ADDR on the network. Then, the process proceeds to step S760, where the value of the counter co is incremented by one to be co + 1, and the process returns to step S705 to repeat the above process until there is no unprocessed unit.

Next, the MIDI processing is shown in FIG. In this process, first, in step S800, the counter co is set to “1”. The value of the counter co is used as the lower data of the logical address, and since the lower data “0” is used for the broadcast, the counter co is counted from “1”. Next, the process proceeds to step S810, and it is determined whether or not there remains any MIDI unit data that has not been processed yet. If an unprocessed unit remains, the process proceeds to step S820, and the physical address of the MIDI unit is set as ADDR. Then, in step S830, the MIDI control program is extracted from the program server module and set as a PROG in a register.
The logical address of the IDI unit is changed to "4. co "(in this case," 4.1 "), and in step S850, the physical address of the main assigner stored in the assigner processing shown in FIG. 15 is set in the register as additional information INFO.

Next, "Prog Load" is set as the transmission command SCOM in step S860, and the SCOM, PROG, INF are set in step S870.
O, LADDR are transmitted to ADDR on the network. Then, the process proceeds to step S880, in which the value of the counter co is incremented by one to be co + 1, the process returns to step S810, and the above process is repeated until there are no unprocessed units.

In the KB processing and the MIDI processing, the physical address of the main assigner is supplied to the unit including the keyboard or the MIDI unit because communication is performed using the logical address "5.0" of the main assigner. In such a case, since the data goes up to the routine for determining the logical address and is detected, the load on the network is increased. However, since the physical address is generally detected by the hardware at the entrance to the network, what can be realized by the physical address can be variously performed by using the physical address without using the broadcast. This is advantageous in that respect.

Next, panel processing is shown in FIG. In this process, first, in step S900, the counter co is set to “1”. The value of the counter co is used as the lower data of the logical address, and since the lower data “0” is used for the broadcast, the counter co is counted from “1”. Next, the process proceeds to step S910, where it is determined whether or not data of a unit including a panel that has not been processed remains. If an unprocessed unit remains, the process proceeds to step S920, and the physical address of the unit including the panel is added to ADD.
Set as R. Then, in step S930, the panel control program is extracted from the program server module and set as a PROG in the register. In step S940, the logical address of the unit including the panel is set to "2. co ”(in this case,“ 2.1 ”) is set, and in step S950, the physical address or the logical address of each sounding unit is set in the register as additional information INFO.

Next, "Prog Load" is set as the transmission command SCOM in step S960, and the SCOM, PROG, INF are set in step S970.
O, LADDR are transmitted to ADDR on the network. Then, the process proceeds to step S980, where the value of the counter co is incremented by one to be co + 1, and the process returns to step S910, where the above process is repeated until there are no unprocessed units. The above is the flowchart on the main unit side, and next, the flowchart on the slave unit side is shown.

FIG. 19 shows a flowchart of the slave unit boot process. In this processing, first, peripheral circuits are initialized in step S1000, and then, in step S1005, an “Addr Req” command is set as a transmission command SCOM, and in step S1010
Broadcasts this SCOM on the network and waits for a response from the main unit for a predetermined time. If it is determined in step S1015 that a response has been received from the main unit, the process proceeds to step S102.
At 0, the physical address of the main unit that is the source of the reply is stored as Main AD. The next step is a step for sending own data, and the step S10
25, the external device connection port is scanned. If it is determined in step S1030 that there is a connected device, the device name of the connected device detected in step S1035 is set to DE.
V is set in the register, and the flow advances to step S1045.

If no external device is connected, "NONE" is set as DEV in step S1040, and similarly, the flow advances to step S1045 to set the processing speed of the CPU of the own unit in the register as SPEED. In step S1050, an initialization request “INI
The command "T" is set as the transmission command SCOM.
Next, in step S1055, the above SCOM, DEV,
Send SPEED to Main AD on the network. The SPEED data is a material for determining whether or not the slave unit is a meta-assign when the slave unit is assigned. As an external device, for example, a keyboard KB
When PAN is connected to panel PN, DEV is KB / PN
, Two devices can be set. next,
In step S1060, a network job is started to wait for data such as a program transmitted from the main unit, and the slave unit boot process ends.

Next, FIG. 20 shows a flowchart of the network job processing. In this process, the interface of the slave unit is scanned in step S1100, it is determined in step S1110 whether a packet has been received, and the scanning of the interface is repeated until the packet is received. And
When the packet is received, the reception data is assembled in step S1120. This is because, when the data amount is large, such as a program, the data is transmitted after being divided into a plurality of packets, so that the process of assembling the divided data based on this step is performed in this step. Therefore, the interface is scanned until the data is assembled, and the packet is repeatedly taken.

When it is determined in step S1130 that the received data has been assembled in this way, it is determined in step S1140 whether or not there is a logical address. Since the logical address is assigned from the main unit at the same time as the transfer of the program, there is a logical address after the program is loaded. That is,
In this case, since the program has been loaded, the data can be passed to the corresponding job in step S1160. If there is no logical address, the program has not been loaded yet, and a job assignment process such as loading the program is performed in step S1150. Next, step S
Proceeding to 1170, as a result of executing the processing in the above steps, when transmitting data, the data is transmitted to the corresponding address in response to the data transmission request. That is,
When the job wants to send data, processing such as forming a plurality of packets according to the data length or setting and sending a physical address of a transmission destination is performed. As described above, this network job processing not only receives data but also performs data transmission processing, and this processing performs not only the start-up but also the normal routine work processing.

Next, FIG. 21 shows a flowchart called in the job assignment process in step S1150.
In this process, the reception command RCOM is extracted from the reception data assembled in step S1120,
It is determined in step S1210 whether M is a “Data Req” command. RCOM is “Data Req”
If it is a command, “Data An
s "command is set as the transmission command SCOM,
In step S1230, this SCOM, the processing speed SPPED of its own unit, and the connected device data DEV are transmitted to MainAD on the network.

If the RCOM is not the "Data Req" command, the "Prog Roa" is determined in step S1240.
It is determined whether the command is a “d” command and “Prog Road”
If it is a command, the program PROG, additional information INFO, and logical address LADDR are extracted from the received data in step S1250, and the program PROG is loaded into the RAM so that the CPU of the unit can execute the program PROG. To load the program so that it can be executed, for example, when a program for the pronunciation assigner is read, the maximum number of pronunciations of the pronunciation unit and the like cannot be known only by reading the program. Therefore, the processing includes obtaining these data from the INFO and changing the program so that the number of channels set in the assigner can be scanned. Then, an initialization job is executed in step S1270. This initialization job is programmed in the program loaded in step S1260. In this way, the job assignment process ends as in the case where the received command RCOM is not the “ProgRoad” command.

Next, FIG. 22 shows a flowchart of the scan unit initialization job. In this process, first, in order to transmit the scanned data to the main assigner, the physical address of the main assigner is extracted from the additional information INFO in step S1300, a KB job is started in step S1310, and the initialization job ends. .

FIG. 23 shows a flowchart of the KB job. This job scans the external device connection port in step S1400, compares the data scanned in step S1410 with the data of the previous scan, and executes step S1400.
If there is data that does not match between the two data in 1420, it is determined that there is a key event. If there are a plurality of key events, one of the events is extracted in step S1430, and processing for transmitting the events to the main assigner is sequentially performed. That is, in step S1440, the "Note On" command or "Note Off" command is set as the transmission command SCOM, and in step S1
Data of key pitch information and key touch information at 450
In step S1460, SCOM and DATA are transmitted to the physical address of the main assigner stored in the scan unit initialization job on the network in step S1460. Thereafter, if there is any remaining key event, it is determined in step S1470, and step S1430 is performed.
And the above processing is repeated. If there are no more key events left, KB will be the same as if there were no key events
The job ends. These jobs are repeatedly executed by interruption.

Next, FIG. 24 shows a flowchart of the meta-assigner initialization job. Step S150 of this process
At 0, an assignment condition table of a meta-assigner, for example, as shown in FIG. 7 is created from the additional information INFO, and the initialization job ends. FIG. 25 shows a flowchart of a meta-assignment job. A signal of a note-on process or a note-off process from a keyboard or the like is sent to this job. Therefore, in step S1600, various types of information are extracted from the received data, and in step S1610, the logical address of the assigning module that matches this condition is obtained by referring to the assignment condition table of the metaassigner created by the metaassigner initialization job. Then, in step S1620, the received data is transferred to this logical address. In this case, the data is sent to the network in step S1170 of the network job processing shown in FIG. 20. In this step, a packet is created by changing the logical address to a physical address with reference to the table. Then, data is transmitted by the physical address.

Next, a flowchart of the assigner initialization job is shown in FIG. In step S1700 of this process, for example, an assigner assignment table as shown in FIG. 8 is created from the additional information INFO, and the initialization job ends. In this assignment table, the sounding units are respectively defined as a unit 1 and a unit 2 of four channels. The unit number is used as a logical address, the unit-specific address is used as its physical address, and the numbers 1 to 4 are used. It is the pronunciation channel number.

FIG. 27 shows a flowchart of the assigner job. In this process, various information is extracted from the received data in step S1800, and the process proceeds to step S18.
In step S1820, a specific unit number and a sound channel number are assigned with reference to the assigner assignment table created in the assigner initialization job in step S1820. In step S1830, the logical address of the sounding unit to which sound is assigned is set as LA. In step S1840, as additional information INFO, the pitch information of the received data DATA and the content of the touch information, the assignment type, the tone color information, and the sounding are set. Set the sound channel number within the sound unit to be assigned. And
In step S1850, the INFO is transmitted to the logical address LA on the network using the “Note On” command or the “Note Off” command as the transmission command SCOM, and the assigner job ends. However, this transmission is performed by changing the logical address to the physical address in step S1170 shown in FIG.

Next, FIG. 28 shows a flowchart of the tone generation unit initialization job. This job is executed in step S1
At 900, the tone synthesis circuit is initialized and the circuit is cleared to prevent the generation of abnormal noise due to the previous data. Then, in step S1910, the physical address of the audio unit is extracted from the additional information INFO transmitted from the main unit. Further, launching of an audio output job is performed in step S1920, and DS
When a microprogram is given as in a simulation sound source using P, the given microprogram is transferred to the microprogram memory in step S1930. Thus, the sounding unit initialization job ends.

FIG. 29 shows a flowchart of the note-on job. In this job, the additional information INF transmitted by the assignment job in step S2000
Take out the information from O and assign it as AT, Asign Type, KC
As Key Code, IT as Initial Touch, and AC as Assign Channel. In the case of this assignment type, for example, in the case of a simulation sound source system using a DSP, the timbre is determined by giving a microprogram in step S1930 shown in FIG. However, since this tone cannot be changed without changing the microprogram, this method is of a static assign type. For example, in the waveform memory method, the tone can be changed by sending a tone code, so that the dynamic tone can be changed. Assignment type. As a result, in the case of a dynamic assignment type, the timbre can be changed for each key-on or for each sound generation assignment.

If it is determined in step S2010 that the assign type AT is "Dynamic", then in step S2020, the tone color information Tone is obtained from the additional information INFO.
Extract Color and set it as TC. Next, in step S2030, the tone color code TC is sent to the tone generation channel AC, and the key code KC, the initial touch information IT, and the key tone signal are assigned to the tone generation channel AC in step S2040, as in the case where the assign type is static. KON is sent so that sounding is started from the sounding unit. Then, the note-on job ends.

Next, in the note-off job shown in FIG. 30, an Assign Channel is extracted from the additional information INFO transmitted in step S2100 and set as AC. In step S2110, a key-off signal is sent to the sound generation channel AC. The sound is stopped by sending OFF. This ends the note-off job. In the case of an all-notes-off job that stops all sounds,
When the key-off signal KOFF is transmitted on the network by broadcasting the logical address "3.0", the received key-off signal OFF is transmitted to all the sounding channels in step 2200 as shown in FIG. Is stopped. Further, FIG. 32 shows an audio output job started in step S1920 shown in FIG. This job is a job for packetizing the output digital data of the tone synthesis circuit in step S2300 and transmitting it to the audio unit.

The description of each flowchart is completed above, but if the processing capacity of one unit has room, a plurality of functions can be assigned to one unit. For example,
A key scan program and a sound assignment program can be assigned to one unit and operated simultaneously.
These programs are processed by time-division multitasking by interruption or the like. When allocating a plurality of functions as described above, it is preferable to allocate a program related to a process instead of simply allocating a program to a device having a processing capability at random. That is, when the assignment is performed as described above, the information from the key scan is transferred to the pronunciation assignment program without passing through the network, so that not only the response is improved but also the traffic on the network can be reduced. However, in this case, before transmitting to the network, it is checked whether or not the target function exists in the own unit, and if it exists, means for not communicating with the network is added to the program.

When the number of sound channels increases, the processing time increases in proportion to the number N of sound channels in a normal sound assignment algorithm. However, when the meta-assign unit is ideal (the overhead is 0 and the Can be theoretically processed in NlogN times. However, the processing cannot be made so efficient because of the overhead, but if the meta-assignment unit is configured in multiple stages, the assignment can be made even faster. In this case, if the meta assignment unit and the meta assignment unit (unit for assigning to the meta assignment unit) are configured in the same module, the overhead due to communication can be reduced as much as possible.

As described above, in the electronic musical instrument network system of the present invention, a plurality of processing units connected to the network, the processing capabilities of the plurality of processing units, and the state of whether or not an externally connected device is connected. And allocating at least one process to each of the plurality of processing units in accordance with the detected state, and allocating means connected to the network. Are operated in cooperation with each other.

Further, the electronic musical instrument network system according to the present invention has a storage means for storing various programs for performing the respective processes, and a means for transferring the necessary programs to the allocated units in accordance with the allocation of the processes. Is further provided. Further, the electronic musical instrument network system of the present invention creates means for detecting the number of sound channels of each sound unit on the network, and a sound assignment table for managing sound assignment according to the detection result detected by the means. And a allocating means for allocating pronunciation to a predetermined unit on the network based on the generated table. Still further, the electronic musical instrument network system of the present invention divides a plurality of sound channels into a plurality of groups, and a plurality of sound assigning means for assigning sounds for each of the plurality of groups;
Selecting means for selecting one sounding assigning means according to a predetermined condition.

[0071]

Since the present invention is configured as described above, a plurality of processes conventionally performed by one electronic musical instrument can be performed.
Because it can be automatically distributed to each unit connected to the network, various expansions are possible,
An electronic musical instrument network system that can effectively use resources on the network can be realized.

[Brief description of the drawings]

FIG. 1 is an overall conceptual diagram of an electronic musical instrument network system of the present invention.

FIG. 2 is a block diagram of a sound source unit using a DSP.

FIG. 3 is a block diagram of a waveform memory type sound source unit.

FIG. 4 is a block diagram of a general-purpose unit.

FIG. 5 is a logical address comparison table.

FIG. 6 is a diagram illustrating an example of a packet.

FIG. 7 is a diagram illustrating an example of an assignment condition table of a meta-assigner.

FIG. 8 is a diagram showing an example of an assigner assignment table.

FIG. 9 is a diagram showing an outline of the overall operation of the electronic musical instrument network system of the present invention.

FIG. 10 is a diagram showing a flowchart of a main unit boot process.

FIG. 11 is a diagram illustrating a flowchart of an address request job process.

FIG. 12 is a diagram illustrating a flowchart of an initial job process.

FIG. 13 is a diagram showing a flowchart of a function assignment process.

FIG. 14 is a diagram illustrating a flowchart of a TG process.

FIG. 15 is a view illustrating a flowchart of an assigner process.

FIG. 16 is a diagram showing a flowchart of a KB process.

FIG. 17 is a diagram showing a flowchart of a MIDI process.

FIG. 18 is a view illustrating a flowchart of panel processing.

FIG. 19 is a view showing a flowchart of slave unit boot processing.

FIG. 20 is a diagram illustrating a flowchart of network job processing.

FIG. 21 is a diagram illustrating a flowchart of a job assignment process.

FIG. 22 is a diagram illustrating a flowchart of a scan unit initialization job.

FIG. 23 is a diagram illustrating a flowchart of a KB job.

FIG. 24 is a diagram illustrating a flowchart of a meta-assigner initialization job.

FIG. 25 is a diagram illustrating a flowchart of a meta-assigner job.

FIG. 26 is a diagram illustrating a flowchart of an assigner initialization job.

FIG. 27 is a diagram illustrating a flowchart of an assigner job.

FIG. 28 is a diagram illustrating a flowchart of a sounding unit initialization job.

FIG. 29 is a diagram illustrating a flowchart of a note-on job.

FIG. 30 is a diagram illustrating a flowchart of a note-off job.

FIG. 31 is a diagram illustrating a flowchart of an all-notes-off job.

FIG. 32 is a diagram illustrating a flowchart of an audio output job.

FIG. 33 is a block diagram showing an outline of a conventional electronic musical instrument network system.

FIG. 34 is a diagram showing a flowchart of a conventional electronic musical instrument network system.

[Explanation of symbols]

Reference Signs List 10 program server module, 11 program server, 12, 42 auxiliary storage device, 20 main unit, 30 assigner unit, 31, 71, 81 interface, 32 external device connection port, 33, 7
4,84 CPU, 34,75,85 ROM, 35,
76,86 RAM, 36,77,87 internal bus, 4
0 Automatic performance module, 41 Automatic performance unit, 5
0 key / panel switch module, 51 scanner unit, 52 key / panel switch circuit, 60 MID
I interface unit, 61 interface unit, 62 MIDI interface, 70 to 110
Sounding unit, 72 DSP, RAM for 73 DSP,
82 tone synthesis circuit, 83 waveform ROM, 120 audio output unit, 130 sound system, 14
0 Network circuit, 150 mixing circuit

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁷ Identification code FIG06F 9/06 420K (56) References JP-A-63-314598 (JP, A) JP-A-4-209032 (JP, A) JP-A-5-225157 (JP, A) JP-A-59-72557 (JP, A) JP-A-57-76646 (JP, A) JP-A-57-71060 (JP, A) JP-A-3-220660 (JP, A) JP-A-1-267767 (JP, A) JP-A-2-300843 (JP, A) JP-A-6-222760 (JP, A) JP-A-62-208099 (JP, A) JP-A-3-78862 (JP, A) JP-A-2-44456 (JP, A) JP-A-2-73447 (JP, A) JP-A-4-335463 (JP, A) JP-A-2-59953 ( JP, A) JP-A-2-122365 (JP, A) JP-A-5-324483 (JP, A) JP-A-62-272341 (JP, A) JP-A-5-120248 (JP, A) JP-A-5-96895 (JP, U) Patent 2561760 (JP, B2) Patent 3003498 (JP, B2) JP 2-41757 (JP, B2) 3-1698 (JP, B2) U.S.A. 3-2958 (JP, Y2) U.S. Pat. No. 5,109,512 (US, A) U.S. Pat. Translated by Harada and Kubo, "Structured Design Method of Software" (October 25, 1986) Japan Computer Association p. 123-165 (58) Fields investigated (Int. Cl. ⁷ , DB name) G10H 1/00-7/12 G06F 9/06 540 G06F 9/445 G06F 15/16 G06F 15/177 670 INSPEC (DIALOG) JICST File (JOIS) WPI (DIALOG)

Claims (5)

(57) [Claims] 1. A plurality of processing units connected to a network, and a processing capability of the plurality of processing units is detected, and the plurality of processing units are detected in accordance with the detected processing capability and a workload of a function to be allocated. Allocating means connected to the network, which automatically allocates a suitable function among a plurality of functions to each of the processing units; and
Processing processor according to the function assigned to each processing unit
And a program storage means for storing a program . The assignment means assigns a function to each of the processing units.
When it is assigned, the processing according to the processing of the assigned function
Read out the management program from the program storage means
Then, when it is determined before the start of the processing operation that the amount of work of the function to be allocated and transferred to the processing unit is too large to be processed by one processing unit, the function to be allocated is changed to A function is assigned to each of the above processing units, and processing is performed in accordance with the function.
An electronic musical instrument network system, wherein the plurality of processing units cooperate to operate as an electronic musical instrument system by transferring a program . 2. The assigning means also detects the state of each processing unit such as whether an externally connected device is connected in each processing unit, and detects the detected state and the processing capability and the work of the function to be assigned. 2. The electronic musical instrument network system according to claim 1, wherein a suitable function among a plurality of functions is automatically assigned to each of the plurality of processing units according to the amount. 3. The electronic musical instrument network according to claim 1, wherein the assigning means automatically assigns a function suitable for each of the plurality of processing units only at the time of starting the system. system. 4. When the assigning means assigns a plurality of functions to one processing unit, the assigned functions are regarded as functions related to each other, and when processing of the assigned plurality of functions is executed, 2. The electronic musical instrument network system according to claim 1, wherein data is exchanged between a plurality of functions. 5. The processing unit, wherein the allocating means allocates the same type of function to a plurality of processing units and the function of allocating processing to a plurality of processing units to which the same type of function is allocated is configured in multiple stages. The electronic musical instrument network system according to claim 1, wherein