JP3085677B2 - Music signal generator - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical tone signal forming apparatus having a musical tone data such as waveform parameters for determining a tone color and a system program for controlling a musical tone signal forming apparatus main body. In particular, the present invention relates to a tone signal forming apparatus that facilitates updating and correction (upgrading) of tone data and system programs.

2. Description of the Related Art Conventionally, electronic musical instruments include the above-mentioned musical tone data and system programs in a UVEP-ROM (Ultra Violet Erasable Programmable ROM) or MASK.
There is known an apparatus loaded with a program written in a ROM (mask ROM).

[Problems to be Solved by the Invention] By the way, when updating or modifying the above-mentioned musical tone data or system program, the conventional electronic musical instruments are dealt with by replacing the UVEP-ROM or MASK-ROM itself. doing. However, this replacement work cannot be easily performed by a general user and must rely on a specialized engineer. For this reason, there was a problem that the price required for replacement was very high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a tone signal forming apparatus that can easily update and modify tone data and system programs even by a general user. .

According to a first aspect of the present invention, there is provided a musical tone signal forming apparatus for forming a musical tone based on musical tone data. External storage means, which also stores control information indicating a program in an apparatus to which the tone data stored in the external storage means is compatible, and the tone data from the external storage means to the storage means. Instruction means for instructing writing of
Determining means for determining, based on control information stored in the external storage means, that the tone data in the external storage means is compatible with the tone signal forming apparatus; Writing means for writing the tone data from the external storage means to the storage means in accordance with the condition, and writing only the tone data determined to be suitable by the determination means. And

According to a second aspect of the present invention, there is provided a writable storage means and an external storage means capable of storing musical sound data, wherein a program in an apparatus to which the musical sound data stored in the external storage means is adapted. From the external storage means in response to a write instruction from the external storage means, an instruction means for writing the musical sound data from the external storage means to the storage means, and a write instruction from the external storage means. Writing means for writing the musical tone data to the storage means, wherein the musical tone signal forming apparatus forms a musical tone based on the musical tone data, wherein the musical tone signal is formed based on control information stored in the external storage means. Determining means for determining whether or not the musical tone data in the external storage means conforms to the musical tone signal forming apparatus; and determining the tone data stored in the external storage means according to the determination by the determining means. Over data it is characterized by comprising a notification means for notifying whether or not adapted to this musical tone signal forming apparatus.

According to a third aspect of the present invention, in the first or second aspect of the invention, further, the user selects whether or not to write the musical tone data stored in the external storage means into the storage means. Selecting means, wherein the writing means stores the musical tone data which is determined by the determining means to be compatible with the musical tone signal forming apparatus, and which is selected by the writing selecting means to be written into the storage means. It is characterized by writing in the means.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the control information includes information indicating a storage capacity of musical sound data stored in the external storage means, The determining means determines whether or not the storage means has a free storage capacity for storing the tone data, and determines whether or not the tone data is compatible with the tone signal forming device. And

According to a fifth aspect of the present invention, in the first aspect of the present invention, the control information is information indicating whether or not the content stored in the external storage means is musical tone data. The determination means determines whether or not the content stored in the external storage means is musical tone data, and further, if the content stored in the external storage means is musical tone data, It is characterized in that it is determined whether or not the data is compatible with the tone signal forming device.

According to the first aspect of the present invention, based on control information indicating a program in a device to which writable and readable storage means and a musical tone data stored in the external storage means match, Determining means for determining whether or not the tone data in the storage means is compatible with the tone signal forming apparatus; and when an instruction to write the tone data to the storage means is issued from the external storage means, the determining means Only the tone data determined to be suitable by the above is written from the external storage means to the storage means.

According to the second aspect of the present invention, when the instruction means gives an instruction to write musical tone data from the external storage means to the storage means, the writing means stores the music data from the external storage means in response to the write instruction. Write musical sound data to the means. The determination means determines whether or not the tone data in the external storage means matches this tone signal forming apparatus based on control information indicating a program in the apparatus to which the tone data stored in the external storage means matches. In accordance with the determination made by the determining means, the notifying means notifies the musical tone signal forming apparatus whether the musical tone data stored in the external storage means is suitable.

According to the third aspect of the present invention, the user selects whether or not to write the tone data stored in the external storage means into the storage means by using the write selection means. The writing means stores the musical tone data when the determining means determines that the musical tone data is suitable for the musical tone signal forming apparatus and the writing selecting means selects that the musical tone data is to be written into the storing means. Write to.

According to the fourth aspect of the present invention, the determination means stores the tone data based on the control information further including information indicating the storage capacity of the tone data stored in the external storage means. It is determined whether or not there is enough free storage capacity, and whether or not the musical tone data is compatible with the musical tone signal forming device.

According to the fifth aspect of the present invention, the determination unit is configured to perform a determination based on control information further including information indicating whether or not the content stored in the external storage unit is musical tone data.
It is determined whether or not the content stored in the external storage means is tone data. If the content stored in the external storage means is tone data, the tone data is further transmitted to the tone signal forming apparatus. Determine whether or not they match.

Therefore, according to the present invention, when updating or modifying musical tone data, it is not necessary to replace the storage means with a new one, and even a general user can easily update and modify musical tone data. .

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an electronic musical instrument according to one embodiment of the present invention. The electronic musical instrument shown in this figure has a function of a normal synthesizer, that is, a function of generating a musical tone according to a keyboard performance by a player.

In FIG. 1, reference numeral 1 denotes a keyboard unit, which includes a plurality of keys, a plurality of key switches for detecting an on / off state of each key, a velocity detector for detecting the velocity at which each key is hit, An interface circuit (not shown) for supplying the output of each key switch and the output of the velocity detector to a bus line (including an address bus and a data bus) B is provided. Reference numeral 2 denotes a CPU (central processing unit) for controlling each part of the electronic musical instrument main body, and reference numeral 3 denotes a RAM (random access memory). A フ ラ グ flag is set in a predetermined area of the RAM3.
Reference numeral 4 denotes a sound source, which generates a tone signal based on a key operation of the keyboard unit 1. In this case, the timbre included in the tone signal is determined by the waveform parameter. The tone signal generated from the sound source 4 is supplied to an amplifier 5 and the amplifier 5
The sound is amplified as a musical tone from the speaker 6. 7 is MIDI (Musical Instrument Digital Interface)
e) The receiving circuit, which is the MIDI output from the external MIDI device
A standard signal is read via a MIDI IN terminal and output to the bus line B. Reference numeral 8 denotes an EEPROM (electrically erasable programmable read only memory) in which a system program for controlling the CPU 2 is written. As is well known, this EEPROM 8 can be electrically written and erased, and the CPU 2
The data is written by the write signal supplied from the CPU 2, and the data is erased by the erase signal supplied from the CPU 2. FIG. 2 is a diagram showing a memory map of the EEPROM 8 in this embodiment. As shown in FIG. 2, a BIOS (basic input / output operating system) unit and a SYSTEM (system program) unit Is assigned. Reference numeral 9 shown in FIG. 1 denotes an EEPROM in which musical tone data such as waveform parameters for determining a tone color and musical tone information (to be described later in a list) are written. In this case, the musical sound data is written in a format (see FIG. 3) depending on the system program. As the above-described EEPROMs 8 and 9, both a batch erasing type in which all written data can be collectively erased and a partial erasing type in which partial erasing can be partially performed can be used. Reference numeral 10 denotes a memory card that supplies musical tone data, a system program, and musical tone information to the electronic musical instrument main body, and is detachably attached to the electronic musical instrument main body by a connector 10A. The memory card 10 is provided with one of a RAM, a ROM, and an EEPROM. Music data, system programs and control information are written in any of these RAMs, ROMs and EEPROMs. Here, FIG. 4 shows the memory card 10
FIG. 3 is a diagram showing an example of control information stored in a storage element type, as shown in FIG. 3, which is composed of “storage element type”, “data content”, and “data capacity”. The control information is as follows.

◇ Storage element type “00”: RAM “01”: ROM “02”: EEPROM “03”: EEPROM (byte erasable) ◇ Data content “00”: System program “01”: Tone data ◇ Data capacity “00” : 10KB "01": 100KB "02": 1MB After the data capacity, specific information for checking the disappearance of the contents of RAM and EEPROM is entered. For example, “YAMAHA MCMC- ○” etc. On the other hand, the terminals of the memory card 10 are as follows.

Data bus: 8 bits Address bus: 16 bits (can be changed according to the required number) ▲ ▼ ▲ ▼ ▲ ▼ ▲ ▼ A panel operation unit for performing various operations of the instrument body. Panel switches SW1 to 4 and a display DSP are provided on the surface of the panel operation unit 11, and an interface circuit for exchanging data with the main body of the electronic musical instrument via the bus line B is provided inside. (Not shown) are provided. Here, the function of the apparatus main body by each of the panel switches SW1 to SW4 will be described.

(B) Panel switch SW1 The panel switch SW1 is used for the memory 10a in the memory card 10.
The music data written to the
The instruction to transfer the data to the CPU 2 is issued to the CPU 2.
In this case, if the version of the musical sound data read from the memory 10a is different from the version of the system program written in the EEPROM 8 in the electronic musical instrument main body, the transfer is not performed.

(B) Panel switch SW2 The panel switch SW2 instructs the CPU 2 to transfer the tone data written in the EEPROM 9 in the electronic musical instrument main body to the memory 10a.

And do it.

(C) Panel switch SW3 The panel switch SW3 instructs the CPU 2 to transfer the system program written in the memory 10a to the EEPROM 8 in the electronic musical instrument main body. In this case, if the version of the system program read from the memory 10a is different from the version of the musical sound data written in the EEPROM 9, an alarm is generated from an alarm generator (not shown).

(D) The panel switch SW4 is the panel switch S described above.
It instructs the CPU 2 to start transfer of the musical sound data and the system program in each of W1 to SW3.

Next, the operation of the electronic musical instrument according to the above configuration will be described with reference to FIGS.
This will be described with reference to the flowchart shown in FIG.

FIG. 5 is a flowchart showing a main routine of the CPU 2. When the power of the electronic musical instrument is turned on, first, an initialization process of step S1 is performed, and the RAM 3 is initialized.
Is cleared. Next, the process proceeds to step S2, where key processing is performed. In this case, the description regarding the key processing is omitted.

When the key processing is completed, the process proceeds to step S3, where the processing of the panel switch is performed. Hereinafter, the processing of the panel switch will be described.

(6) Panel processing (step S3) FIG. 6 is a flowchart showing panel switch processing. In step S4, a key scan is performed,
The on / off state of each of the panel switches SW1 to SW3 provided on the panel operation unit 11 is sequentially checked. First, the process proceeds to step S5, where the on / off state of the panel switch SW1 is detected. In this case, if the panel switch SW1 is in the ON state, the process proceeds to step S6, and the process of the panel switch SW1 is performed. That is, as described above, the memory card
The tone data written in the memory 10a in the memory 10 is transferred to the EEPROM 9 immediately after the panel switch SW4 is pressed. on the other hand,
If the panel switch SW1 is in the off state, the process proceeds to step S7, and the on / off state of the panel switch SW2 is detected. In this case, if the panel switch SW2 is in the ON state, the process proceeds to step S8, and the process of the panel switch SW2 is performed. That is, as described above, the tone data written in the EEPROM 9 is transferred to the memory 10a immediately after the panel switch SW4 is pressed. On the other hand, if the panel switch SW2 is off, the process proceeds to step S9, where the panel switch SW3 is turned off.
ON / OFF state is detected. In this case, if the panel switch SW3 is in the ON state, the process proceeds to step S10, and the process of the panel switch SW3 is performed. That is, as described above, the system program written in the memory 10a is transferred to the EEPROM 8 immediately after the panel switch SW4 is pressed. On the other hand, if the panel switch SW3 is in the off state, the process proceeds to step S11, and the function processing of the other switches is performed. When the above process ends, the process returns to step S2.

Next, processing in each of the panel switches SW1 to SW3 described above will be sequentially described.

FIG. 7 is a flowchart showing a process by the panel switch SW1. First, in step S12,
The flag is set to the “Η” level. This allows
Data can be written. Next, proceeding to step S13, control information such as the storage element type, data content, data capacity, and version of musical sound data is read from the memory 10a of the memory card 10. Next, the process proceeds to step S14, where it is determined whether or not the data content of the currently read control information matches the electronic musical instrument main body. If the result of this determination is "NO", that is, if the data content is not the musical tone data itself but a system program, the process proceeds to step S15, and error processing 1 is performed.
Here, FIG. 8 is a flow chart showing the error processing. As shown in FIG.
The message becomes "1", the message "data content is not appropriate" is read from the EEPROM 8, transferred to the panel operation unit 11, and displayed on the display DSP. On the other hand, if the result of the determination in step S14 is "YES", that is, if the data content is the musical tone data itself, the flow proceeds to step S16. In step S26, it is determined whether or not the memory capacity of the EEPROM 9 is sufficient to write all the tone data written in the memory 10a. If the result of this determination is "NO", that is, if the memory capacity of the EEPROM 9 does not have sufficient capacity to write all the musical tone data written in the memory 10a, the process proceeds to step S17, and the error processing 2 Is performed. Here, in the error processing 2, as can be seen from the flowchart shown in FIG. 8, n = 2, and a message that "the memory capacity to be loaded is insufficient" is displayed on the display DSP.
In this case, the reading of the musical sound data in the memory 10a is not performed. On the other hand, if the result of the determination in step S16 is "YES", that is, if the memory capacity of the EEPROM 9 is large enough to write all the tone data, the process proceeds to step S18. In step S18, the version of the tone data that is the remaining information of the control information is
A determination is made as to whether the version matches the version of the system program written in OM8. If the result of this determination is “NO”, the operation proceeds to step S19, where the error processing 3
Is performed. Here, in the error processing 3, as can be seen from the flowchart shown in FIG. 8, n = 3, and a message "the system version is different" is displayed on the display DSP. On the other hand, the aforementioned step S
If the determination result in step 18 is "YES", it is determined that the version of the musical sound data is compatible with the electronic musical instrument main body,
Proceed to step S20. In step S20, it is determined whether or not rewriting may be performed. The result of this judgment is "YE
In the case of "S", that is, when rewriting is permitted by the operator, the process proceeds to step S21, and the tone data in the memory 10a is written into the EEPROM 9. On the other hand, if the result of the determination in step S20 is “NO”, that is, if rewriting is not permitted, the process proceeds to step S22, and the ▲ ▼ flag is set to “L”. As a result, access to the EEPROM 9 is not performed.

 After the above processing ends, the process returns to the step S2.

FIG. 9 is a flowchart showing the processing by the panel switch SW2. First, in step S24, ▲
The flag is set to the “Η” level. This allows
Data can be written. Next, the process proceeds to step S25, where control information such as a storage element type, data content, data capacity, and tone data version is read from the EEPROM 9. Next, proceeding to step S26, it is determined whether or not the memory 10a of the memory card 10 is a ROM. If the result of this determination is "YES", that is, if the memory 10a is a ROM, the process proceeds to step S27, where error processing 1 is performed. In this case, a message that "the content of the data is not appropriate" is displayed on the display DSP by the error processing 1, but since it is actually a ROM, it should be read as writing impossible. On the other hand, if the result of the determination in step S26 is "NO", that is, if the memory 10a is not a ROM (RAM or E
In the case of EPROM), the process proceeds to step S28, and it is determined whether or not the data capacity of the memory 10a is sufficient to write all the tone data written in the EEPROM 9. If this determination result is "NO", that is, if it is determined that the data capacity is not sufficient, the process proceeds to step S29, where error processing 2 is performed, and a message "insufficient memory capacity on the load side" is displayed. Displayed on the display DSP.
On the other hand, if the determination result in step S28 is “YES”
In other words, if the memory capacity is sufficient, the process proceeds to step S30. In step S30, it is determined whether or not rewriting may be performed. If the result of this determination is “NO”, that is, if rewriting is not permitted, the flow proceeds to step S31. In step S31, the ?? flag is set to "L". Then, the process returns to step S2. on the other hand,
If the result of the determination in step S30 is "YES", that is, if rewriting is permitted, the process proceeds to step S32, where E
The control information written in the EPROM 9 is written in the memory 10a, and then, in step S33, the tone data written in the EEPROM 9 is written in the memory 10a. next,
Proceeding to step S31, the ?? flag is set to "L". Then, after the RES flag is set to “L”, the process returns to step S2.

(3) Three processes by panel switch SW FIG. 10 is a flowchart showing a process by panel switch SW3. First, in step S33, ▲
The flag is set to the “Η” level. Next, proceeding to step S34, control information such as a storage element type, data content, data capacity, and version is read from the memory 10a. Next, the process proceeds to step S35, where it is determined whether or not the data content of the currently read control information matches the electronic musical instrument main body. If the result of this determination is "NO", that is, if the data content is not the system program itself but musical tone data, the flow proceeds to step S36, error processing 1 is performed, and a message that "the data content is not appropriate" is issued. Is displayed on the display DSP. On the other hand, if the result of the determination in step S35 is "YES", that is, if the data content is the system program itself, the flow proceeds to step S37. In step S37,
It is determined whether or not the memory capacity of the OM 8 is large enough to write all the system programs written in the memory 10a. If the result of this determination is "NO", that is, if the memory capacity of the EEPROM 8 is not large enough to write all of the system programs in the memory 10a, the process proceeds to step S38, error processing 2 is performed, and "load Message is displayed on the display
Displayed on DSP. In this case, the system program is not read. On the other hand, if the result of the determination in step S37 is “YES”, that is, if the memory capacity of the EEPROM 8 is large enough to write all the system programs in the memory 10a, the process proceeds to step S40.
In step S40, a determination is made as to whether rewriting may be performed. If the result of this determination is “NO”, that is, if rewriting is not permitted, the flow proceeds to step S39, and the ▲ ▼ flag is set to “L”. Then, the process returns to step S2. On the other hand, if the result of the determination in step S40 is "YES", that is, if rewriting is permitted, the flow proceeds to step S41, and the system program is written. Next, the process proceeds to step S42, and it is determined whether or not the version of the system program, which is the remaining information of the control information, matches the version of the tone data written in the EEPROM 9. If the result of this determination is “YES”, that is, if it is satisfied, step S39
Then, the ▲ ▼ flag is set to “L”. on the other hand,
If the determination result in step S42 described above is "NO", if the version of the system program written in the memory 10a does not match the version of the tone data written in the EEPROM 9, the process proceeds to step S43. Error processing 4 is performed, and as can be seen from the flowchart shown in FIG. 8, n = 4, and a message "the system version is different from the tone data version" is displayed on the display DSP. Then, after the error processing 4 ends, the process proceeds to step S39.

The above is the details of the embodiment of the present invention. As described above, in this embodiment, when the panel switch SW1 is turned on, the musical sound data written in the memory 10a is transferred to the EEPROM 9 of the electronic musical instrument main body. Also,
When the panel switch SW2 is turned on, the musical tone data written in the EEPROM 9 is transferred to the memory 10a. When the panel switch SW3 is turned on, the memory 10a
The system program written in
Transferred to EEPROM8. In this way, by using an electrically erasable EEPROM, when correcting or updating musical tone data such as waveform parameters for determining the timbre, or a system program, it is necessary to use a UVEP-ROM or M
There is no need to replace the ASK-ROM. Therefore, replacement of musical sound data and system programs can be easily performed without relying on a specialist.

In this embodiment, the EEPROMs 8 and 9 are used, but instead of these, the RAM may be backed up by a battery to store and exchange data. However, in this case, it is difficult to correctly store the program due to consumption of a backup battery, discharge of a spark capacitor, and the like. Therefore, there is a great advantage in using an EEPROM.

Further, although the memory card 10 is used in this embodiment, a floppy disk may be used instead.

In this embodiment, the tone data and the system program are supplied from the memory card 10. However, the tone data and the system program are converted into MIDI standard signals, and the EEPROM 8 and the EEPROM 8 are transmitted through the MIDI receiving circuit 7. 9
You may make it supply to.

[Effects of the Invention] As described above, according to the tone signal forming apparatus of the first aspect, the external storage means (memory card 1
When the instruction for writing the musical sound data to the storage means (EEPROM 9) is issued from 0), the judging means performs the processing based on the control information indicating the program in the apparatus to which the musical sound data stored in the external storage means fits. Only the tone data determined to be suitable for the tone signal forming apparatus in the external storage means for this tone signal forming apparatus is written from the external storage means to the storage means in accordance with this instruction. When making corrections, music data can be directly
Just transfer to PROM. For this reason, parts (such as UVEP-ROM and M
Compared with the conventional method of exchanging the ASK-ROM itself, even a general user can easily and inexpensively perform work such as updating or correcting the tone data stored in the storage means at a low cost. Only tone data suitable for the tone signal forming device can be externally written to the storage means. Therefore, it is possible to prevent the tone data that is not compatible with the tone signal forming device from being written from the external storage unit to the storage unit.

According to the tone signal forming apparatus of the second aspect, when an instruction to write musical tone data from the external storage unit to the storage unit is issued, the external storage unit transmits the tone data to the storage unit in response to the write instruction. The musical sound data is written, and in accordance with the judgment by the judging means, it is notified whether or not the musical sound data stored in the external storage means is compatible with the musical sound signal forming apparatus. Therefore, the parts (UVEP-ROM and M
Compared with the conventional method of exchanging the ASK-ROM itself, even a general user can easily and inexpensively perform work such as updating or correcting the tone data stored in the storage means at a low cost. It can be easily recognized whether or not the musical tone data is compatible with the musical tone signal forming device.

Further, according to the musical tone signal forming apparatus of the present invention, since the specialized technician is released from the above-described part replacement work, the work in the factory can be simplified and the product price can be reduced. Can be

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an electronic musical instrument according to an embodiment of the present invention, FIGS. 2 to 4 are diagrams for explaining the configuration of the embodiment, and FIGS. It is a flow chart for explaining operation of the example. 2 ... CPU, 3 ... RAM (2, 3 are writing means, determination means, notification means, writing selection means), 8, 9 ... EEPROM (8 is for storing system programs, 9 is for storing musical tone data) Memory means, 10a ... memory (10, 10a are external storage means), 11 ... panel operation section (instruction means, notification means, write selection means).

Claims (5)

(57) [Claims] 1. A musical tone signal forming apparatus for forming musical tones based on musical tone data, comprising: a storage unit capable of writing and reading; and an external storage unit capable of storing said musical tone data. And control information indicating a program in the apparatus to which the musical tone data is stored, and instruction means for instructing writing of the musical tone data from the external storage means to the storage means. Determining means for determining, based on the control information stored in the external storage means, whether the tone data in the external storage means is compatible with the tone signal forming apparatus; Writing means for writing the tone data from the external storage means to the storage means in response to writing only the tone data determined to be suitable by the determination means Tone signal forming apparatus characterized by comprising a. 2. A writable storage means and an external storage means capable of storing musical tone data, wherein control information indicating a program in an apparatus to which the musical tone data stored in the external storage means conforms. Instruction means for instructing the writing of the musical tone data from the external storage means to the storage means; and the storage means from the external storage means to the storage means in response to a write instruction by the instruction means. Writing means for writing musical tone data, wherein the musical tone signal forming apparatus forms musical tones based on the musical tone data, wherein the external storage means is provided based on control information stored in the external storage means. Determining means for determining whether or not the tone data in the means matches the tone signal forming apparatus; and determining the tone data stored in the external storage means in accordance with the determination by the determining means. Tone signal forming apparatus characterized by comprising a notification unit that notifies whether to conform to the signal forming device. 3. The musical tone signal forming device according to claim 1, further comprising: a write selecting means for selecting whether or not the musical tone data stored in said external storage means is to be written into said storage means. And the writing means stores, in the storage means, the music data which is determined by the determination means to be suitable for the musical tone signal forming apparatus, and which is selected by the writing selection means to be written in the storage means. The musical tone signal forming apparatus according to claim 1, wherein the musical tone signal is written. 4. The musical tone signal forming device according to claim 1, wherein said control information includes information indicating a storage capacity of musical tone data stored in said external storage means. Determining whether the storage means has a free storage capacity sufficient to store the tone data, and determining whether the tone data is compatible with the tone signal forming apparatus. 4. A tone signal forming device according to claim 1. 5. The tone signal forming apparatus according to claim 1, wherein the control information includes information indicating whether or not the content stored in the external storage means is tone data. The determination means determines whether or not the content stored in the external storage means is tone data; and if the content stored in the external storage means is tone data, the tone data is further The tone signal forming apparatus according to any one of claims 1 to 4, wherein it is determined whether the tone signal forming apparatus is compatible with the tone signal forming apparatus.