JP2682384B2 - Electronics - 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 instrument that stores editable parameters such as an electronic musical instrument that produces a musical tone based on various parameters and performs an operation according to the stored parameters. .

[0002]

2. Description of the Related Art Conventionally, in an electronic musical instrument, various parameters of a musical tone, such as a waveform of a musical tone signal, an envelope shape of an amplitude, a characteristic of a filter for changing a timbre, a degree of various acoustic effects, etc., are set by various parameters. There is something I did. Further, these parameters are stored in a main memory (RAM) of a CPU that manages the entire electronic musical instrument, and various musical tones can be generated by editing them with an editing device such as a display panel or a switch.

[0003]

However, in such a conventional electronic musical instrument, the main memory is accessed each time a parameter is edited, so that the parameter selection screen displayed on the display panel is switched. If you need a large amount of parameters, you must request a large amount of data from the main memory.
It could affect the normal operation of U.

Further, particularly in the case where the controller for setting parameters and the electronic musical instrument body are separate bodies and are connected by a communication line, the transfer speed of the line causes
In addition to affecting the operation of the CPU, the response corresponding to the player's operation sometimes becomes extremely slow.

According to the present invention, in an electronic device such as the above-described electronic musical instrument which operates according to a parameter, when the parameter is edited, the load on the CPU and the body and the controller are formed separately. Is to reduce the load on the communication circuit.

[0006]

An electronic device of the present invention, which has been made to solve the above-mentioned problems, is an electronic device which operates according to a parameter, and an operation parameter storage for storing the parameter. means and a parameter editing means for editing the parameters, the editing target parameter stores the parameter to be edited in the parameter editing means included with the parameter editing means
And more can be stored editing parameter storage means over data, eds.
Editing target selection means for selecting parameters to be collected
And controlling reading and writing of parameters in the operation parameter storing means and the editing parameter storing means, and by the editing target selecting means.
If a parameter to be edited is selected,
The selected parameters are stored in the editing parameter storage means.
Detects whether or not the selected parameter is stored.
Data is not stored in the editing parameter storage means
Only when the selected parameter is
Parameter storage means for reading from the data storage means
Read / write means for writing into the editing parameter storage means, writing a copy of the parameter stored in the operation parameter storage means into the editing parameter storage means, performing parameter editing in the editing parameter storage means, and editing the edited parameter. A duplicate of the above is written in the operation parameter storage means.

[0007]

The electronic device of the present invention operates according to the parameters stored in the operating parameter storage means. Also,
Writing means, operation parameter storage means and reading parameters in the editing parameter storing means and writes the row control Utotomoni, the editing target selection means
If a parameter to be edited is selected,
The selected parameter is the editing parameter storage means.
Whether or not the selected parameter is stored in the
Data is not stored in the editing parameter storage means.
Only if the selected parameter is
Parameter storage for reading from the data storage means
Write on the column. When a parameter is edited by the parameter editing means, the editing parameter storage means edits a copy of the parameter of the operation parameter storage means stored in the editing parameter storage means as an editing target. Then, a copy of the edited parameter is written in the operation parameter storage means.

[0008]

1 is an external view of an electronic musical instrument system to which the present invention is applied. In this embodiment, an electronic musical instrument system is constructed by connecting a controller 1, a tone generator module 2 and a keyboard 3 so that a tone sound is generated by the tone generator module 2 in response to an operation of the keyboard 3. The tone color of the tone signal generated by the tone generator module 2 and the elements of the effector are designated by various parameters stored in the tone generator module 2, and these various parameters can be edited by the controller 1.

The controller 1 includes a panel switch 1a,
Display panel 1b such as liquid crystal display and mouse 1c
Is equipped with, and the operation of the panel switch 1a and the mouse 1c to switch the operation mode, edit the parameters,
The screen on the display panel 1b is switched at the time of parameter editing.

The controller 1 is a sound source module 2
To control the sound source module 2 by outputting control signals for a parameter transfer request, a parameter load request, a parameter save request, and a parameter rewrite request according to each operation mode.

The sound source module 2 includes a panel switch 2
a, a display panel 2b such as a liquid crystal display, and a disk driver 2c are provided, and a tone color is selected by operating the panel switch 2a and displaying the display panel 2b.
Further, in response to a request from the controller 1, parameters are loaded and saved for the floppy disk set in the disk driver 2c.

The keyboard 3 outputs performance information corresponding to a key event in a MIDI signal format, and the tone generator module 2 generates a musical tone with a tone color currently set according to the MIDI signal input from the keyboard 3. .

FIG. 2 is a block diagram of essential parts of the controller 1 and the tone generator module 2. In the controller 1, the CPU 11 operates based on the control program stored in the ROM 12, and the temporary R in the RAM 13
The entire working area of the controller 1 is controlled using the AM working area. The RAM 13 has an edit buffer as an edit parameter storage means.

Specifically, the panel interface 14
The operation event of the panel switch 1a is detected and the display data is output to the display panel 1b via the, and the operation event of the mouse 1c is detected via the mouse interface 15. In response to the operation of the panel switch 1a and the mouse 1c, data communication of control signals and parameters is performed with the sound source module 2 via the communication interface 16, and parameters are edited using the edit buffer of the RAM 13.

When editing the parameters, the RAM 1
Among the parameters stored in the edit buffer No. 3, the parameter designated by the operation of the mouse 1c is displayed on the display panel 1b. Then, the edited parameters are transmitted to the sound source module 2 side, and the RAM 13
In the edit buffer, and the screen of the display panel 1b is rewritten based on the contents of the edit buffer.

On the other hand, in the sound source module 2, the CPU
Reference numeral 21 controls the entire sound source module 2 using a working area of the temporary RAM of the RAM 23 based on a control program stored in the ROM 22. The RAM 23 has an edit buffer as an operation parameter storage means.

Specifically, through the panel / FD interface 24, detection of an operation event in the panel switch 2a, output of display data to the display panel 2b, and loading / saving of parameters for the floppy disk set in the disk driver 2c. I do. In addition, the controller 1 via the communication interface 25
Data communication of a control signal and a parameter is performed between and, and the parameter of the edit buffer of the RAM 23 is rewritten according to the control signal from the controller 1.

The edit buffer of the RAM 23 is backed up by a battery, and a parameter corresponding to a preset tone color is stored in a predetermined storage area in advance. This parameter and parameters written by the user in other areas can be rewritten. It has become.

Further, the CPU 21 controls the panel switch 2
The parameter for the tone color selected by the operation a is read from the edit buffer of the RAM 23 and set in the tone synthesis circuit 26. In addition, a key event of the keyboard 3 is detected via the MIDI interface 27, and performance information such as a key code and a key-on signal in this key event is output to the tone synthesis circuit 26 to perform a tone generation process. The tone synthesis circuit 26 generates a tone signal according to the currently set parameter, and the sound system 28 performs D / A conversion and amplification of this tone signal to generate a tone.

FIG. 3 is a flow chart of a control program in the controller 1, and the operation of the controller 1 will be described with reference to FIG. First, when the power is turned on, C
The PU 11 performs initialization in step S11, scans the operation event of the panel switch 1a and the mouse 1c in step S12, and determines the presence or absence of the operation event in step S13.

If there is no operation event, the process returns to step S12. If there is an operation event, it is determined in step S14 whether or not the content of the event is an instruction to rewrite the screen of the display panel 1b. If so, the process proceeds to step S15, and if it is not the screen rewriting instruction, the process proceeds to step S101.

Here, rewriting of the screen means the following cases, for example. Since it is not possible to display all the parameters on the display panel 1b at the same time, for example, for each timbre, a group of parameters related to the waveform of the sound source, a group of parameters related to the filter characteristic, a group of parameters related to the amplitude envelope, a group of parameters related to panning, and various effectors. The parameters, such as the parameter group for each type, are displayed for each predetermined group using one screen.

Therefore, in order to switch the parameter group displayed on the display panel 1b of the controller 1, for example, when the parameters relating to the amplitude envelope of a certain tone color are edited and the amplitude envelope of another tone color is desired to be edited, Rewrite the screen. It should be noted that such an editing operation can be performed by processing of a so-called graphical user interface (GUI) by displaying the display panel 1b and operating the mouse 1c.

If the content of the event is an instruction to rewrite the screen of the display panel 1b in step S14, step S1
In step 5, it is determined whether or not there is data necessary for rewriting in the edit buffer of the RAM 13, and if there is necessary data, the process proceeds to step S19, and if there is no necessary data, the data is stored in the edit buffer storage area of the RAM 13 in step S16. It is determined whether there is a margin. If there is a margin, the process proceeds to step S18, and if there is no margin, the step S17 is performed.
Then, the most recently used data stored in the edit buffer of the RAM 13 is erased, and the process proceeds to step S18. The data referred to here is all the data on the screen for each group and has a relatively large capacity.

In step S18, data communication is performed with the sound source module 2 via the communication interface 16 to request the CPU 21 of the sound source module 2 for data required for rewriting, and in response to this, the sound source module 2 The data transferred from is stored in the empty area of the edit buffer of the RAM 13. Then, in step S19, the screen of the display panel 1b is rewritten based on the data stored in the edit buffer,
It returns to step S12.

If the content of the operation event of the panel switch 1a or the mouse 1c is not the screen rewriting instruction in step S14, it is determined in step S101 whether the content of the event is data change. The process proceeds to step S102, and if the data is not changed, the process proceeds to step S105.

This data change is an operation of changing the parameter when editing the parameter, and step S10
The parameter editing operation is performed after 2. That is, in step S102, the corresponding data (parameter) in the edit buffer of the RAM 13 is rewritten according to the operation event. Next, in step S103, data communication is performed with the sound source module 2 via the communication interface 16, and the rewritten data is stored in the CP of the sound source module 2.
Transfer to U21.

Generally, the data is changed only in a part of one screen, and in this case also, only the changed part in one screen is C
Transfer is performed to the PU. In this way, C
It is possible to reduce the burden on the PU and the burden on the communication line.

[0029] Then, a rewriting of the screen being displayed currently on the basis of the rewritten data in RAM13 in the edit buffer in step S 104, step S12
Return to As will be described later, the sound source module 2
On the side, the parameters are rewritten based on the data transferred from the controller 1.

On the other hand, if the content of the operation event of the panel switch 1a or the mouse 1c is not data change in step S101, it is determined in step S105 whether or not the content of the event is a parameter save or load request, and the save is performed. If it is a load request, in step S106, data communication is performed with the sound source module 2 via the communication interface 16, and the C of the sound source module 2 is transmitted.
Save request data or load request data corresponding to the event is transferred to the PU 21, and the process returns to step S12. If it is not a save or load request, step S
At 107, other processing is performed according to the content of the operation event of the panel switch 1a or the mouse 1c, and step S
Return to 12.

FIG. 4 is a flow chart of the control program in the tone generator module 2. Next, the operation of the tone generator module 2 will be described with reference to FIG. First, when the power is turned on, the CPU 21 initializes in step S21, monitors the communication port of the communication interface 25 in step S22, and determines in step S23 whether or not there is a message (transmission data from the controller 1).

If there is no message, the process proceeds to step S202, and if there is a message, it is determined in step S24 whether the content of the message is a data request. If it is a data request, in step S25, the data corresponding to the request content is read from the edit buffer of the RAM 23, the read data is transferred to the controller 1 via the communication interface 25, and the process proceeds to step S202.

If the content of the message is not a data request in step S24, it is determined in step S26 whether the content of the message is a load request. If it is not a load request, the process proceeds to step S28. The data selected in S27 is loaded from the floppy disk into the edit buffer of the RAM 23 via the disk driver 2c, and the process proceeds to step S202.

If the content of the message is not a load request in step S26, it is determined in step S28 whether the content of the message is a save request. If it is not a save request, the process proceeds to step S201. In step S29, the contents of the edit buffer of the RAM 23 are saved in the floppy disk via the disk driver 2c, and the process proceeds to step S202.

If the content of the message is not a save request in step S28, the content of the message is determined by the controller 1
Since it is the parameter data transferred from the RAM in step S201, based on the parameter data
The data in the edit buffer 23 is rewritten, and the process proceeds to step S202.

When each process according to the content of the message from the controller 1 is completed in this way, step S2
In 02, sound processing is performed by detecting events on the keyboard 3,
It returns to step S22.

With the above processing, when parameters are edited by the controller 1, the parameters in the edit buffer on the controller 1 side and the parameters on the edit buffer on the tone generator module 2 side are updated by editing in steps S102 to S104.
The contents are switched and displayed on the display panel 1b of the controller 1.

Furthermore, when the controller 1 switches the display of the parameters on the display panel 1b, if the necessary data is stored in the edit buffer of the controller 1, the CPU 21 of the tone generator module 2 can be requested for the data. Since it does not exist, the load on the CPU 21 and the communication line is reduced.

In the above embodiment, in the sound source module process, in response to the load request from the controller 1, the data is simply loaded into the edit buffer of the RAM 23 in step S27. Transfer to 1 side and R of controller 1 side
It may be stored in the edit buffer of the AM 13.

In this case, after step S27 of the sound source module process of FIG. 4, for example, as shown in FIG. 5A, a process of transferring the contents of the edit buffer of the RAM 23 to the controller 1 is added as step S27 '. In addition, step S106 of the controller processing of FIG.
After that, as shown in FIG. 5B, step S106 '
In the case of a load request, a process of storing the received data in the edit buffer of the RAM 13 may be added.

Here, the capacity of the edit buffer of the controller 1 may be the same as that of the edit buffer of the tone generator module 2, but can be appropriately set to a smaller capacity than the edit buffer of the tone generator module 2 according to the processing method.

For example, if all envelope data for the tone colors A to C are stored in the edit buffer of the controller 1 and there is no room for reading the envelope data of the tone color D, the tone colors A to C are selected. Data of low-priority tones (tones that have not been used recently, tones that can be read immediately even if they are deleted due to their small capacity, etc.) is deleted, and an area for tone D is created, and the tone generator module is placed there. Read the data from 2. In the case of this first method, the capacity of the edit buffer on the controller 1 side is small, and unnecessary data is not loaded.

In the case of the first method, parameters having a certain degree of correlation may be collectively read in advance. For example, in the field of electronic musical instruments such as this embodiment, it is performed to synthesize a musical tone waveform of a plurality of elements to generate one musical tone, but in the case of performing parameter editing for a certain element, Since there is a high possibility that parameter editing will be performed on other elements having the same tone, it is advisable to read parameters for other elements having the same tone when performing parameter editing on one element.

As a second method, for example, every time the tone color to be edited is switched, all the data relating to the tone color is read into the edit buffer on the controller 1 side. In this case, it may be wasteful that unreferenced data may be read in the future, but since all the data for that timbre has been read in the edit buffer on the controller 1 side, when switching screens No time delay.

In order to carry out the processing by the second method,
The screen rewriting determination in step S14 in FIG. 3 is changed to the tone color switching determination, and steps S15 to S1 are performed.
9 may be processed so as to read all the data of the timbre unconditionally.

Furthermore, both the first method and the second method can be used. That is, the edit buffer on the controller 1 side is made relatively large in capacity, a plurality of tone color data are stored, and if a new tone color read request is made, the tone color data that has not been used recently is deleted. The data of new timbre should be read into.

In the above embodiment, the controller 1
Although the case where the parameter editing is performed has been described above, the parameter editing may be performed on the sound source module 2 side as well. In this case, the sound source module 2 is provided with a function of transferring the edited data so as to rewrite the data of the controller 1 when the data to be edited by the sound source module 2 exists in the controller 1. The controller 1 may be provided with a function of receiving a data change signal and rewriting data.

In the above embodiment, the sound source main body (sound source module) and the controller are separated from each other, but a plurality of CPUs are provided in the main body and the same processing is performed only inside. Good. The operation means for performing the editing operation is not limited to the mouse, and a pen or the like may be used.

In the above embodiment, an example of the electronic musical instrument system has been described, but the present invention is not limited to this, and the present invention is not limited to this.
The present invention can be applied to an electronic device capable of performing an operation according to a large number of parameters and editing the parameters.

[0050]

As described above, according to the present invention, in an electronic device which operates according to a parameter, a copy of the parameter stored in the operating parameter storage means is written in the editing parameter storage means, perform parameter editing in the editing parameter storage means, and to write a copy of the edited parameter to the operation parameter storage means, the edited parameters
Data is not stored in the editing parameter storage means
Only the parameter storage means for operation.
From the editing parameter storage means
Since the data is collected, it is possible to reduce the load on the CPU or the like that controls the operation according to the parameter when the parameter is edited.

[Brief description of the drawings]

FIG. 1 is an external view of an electronic musical instrument system to which the present invention has been applied.

FIG. 2 is a block diagram of a main part of a controller and a sound source module in the embodiment.

FIG. 3 is a flowchart of a control program on the controller side in the embodiment.

FIG. 4 is a flowchart of a control program on the tone generator module side in the embodiment.

FIG. 5 is a part of a flowchart according to another embodiment.

[Explanation of symbols]

1 ... Controller, 2 ... Sound source module, 3 ... Keyboard, 1
1, 21 ... CPU, 13, 23 ... RAM, 16, 25 ...
Communication interface.

Claims (1)

(57) [Claims] 1. An electronic device which operates according to a parameter, wherein the operation parameter storage means stores the parameter, a parameter editing means for editing the parameter, and an accessory to the parameter editing means. The parameter to be edited by the parameter editing means is stored and
Editing parameter storage means capable of storing a plurality of editing target parameters, and editing target selecting means for selecting parameters to be edited
And controlling reading and writing of parameters in the operation parameter storage means and the editing parameter storage means, and editing by the editing target selection means.
If the parameter to be collected is selected,
Stored parameters are stored in the editing parameter storage means.
Whether or not the selected parameter is
If it is not stored in the editing parameter storage,
The selected parameter as the operation parameter description.
Read from the storage means and write to the editing parameter storage means
And a writing means for burn them, perform parameter editing in said editing parameter memory means writes the copy of the parameters stored in the operation parameter storage means to said editing parameter memory means, which is the editing parameter An electronic device, wherein a copy of the above is written in the operation parameter storage means.