JPH0555879B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a parameter setting device for an electronic musical instrument that sets parameter information for musical tone formation. Information and new parameter information after modification 1
These can be selected alternately using individual switches.

As is well known, electronic musical instruments are provided with many operators for setting various parameter information in order to control various musical tone elements such as pitch, timbre, and volume of musical tones. Each parameter information set by these operators is stored in a parameter memory device, then selectively read out by a selection switch and transferred to a tone generator, where it is used to form musical tones. It is becoming more and more common.

By the way, it often happens that you want to perform a performance after slightly modifying the parameter information that has already been stored in the parameter memory device. There are some things I would like to know by actually pronouncing the musical tones.

However, conventional parameter setting devices store multiple sets of parameter information in independent storage locations of a parameter memory device, with each parameter information being one set, and these storage locations are selected by corresponding select switches. The device is configured to select and transmit a desired set of parameter information. Therefore, in order to compare two musical tones based on the old parameter information and the new parameter information after correction, the new parameter information must be stored in one of the storage locations, and then the new parameter information must be stored in the storage location of the old parameter information. The old and new parameter information must be selected by selecting the old parameter information using the corresponding select switch, and then selecting the new parameter information using the selector switch corresponding to the storage location of the new parameter information. The drawback was that it was very troublesome.

The present invention has been made in view of these drawbacks, and its object is to provide a parameter setting device for an electronic musical instrument that allows musical tones based on old and new parameter information to be compared with extremely simple operations.

To this end, the present invention has a parameter storage area that stores a plurality of parameter information groups and a buffer storage area that can store at least one parameter information group, and both storage areas are located at the same memory address location. A memory for storing parameters to be selected and specified, an operator means for changing and setting parameter information, and a first memory for selecting and specifying a desired set from among the plurality of sets of parameter information stored in the parameter storage area. and a first switch means to designate an address position of a parameter storage area in which a set of parameter information groups selected and designated by the first switch means are stored, and to select a set of parameter information groups stored at this address position. a transfer means for reading out and transferring it to the buffer storage area; a change control means for changing and controlling desired parameter information among the parameter information group transferred to the buffer storage area in accordance with the operation of the operator means; Each time the switch means and the second switch means are operated, the address position of the buffer storage area and the address of the parameter storage area where the set of parameter information selected and designated by the first switch means are stored. The apparatus comprises parameter information selection and output means for alternately specifying positions, reading out a group of parameter information at the specified address positions, and transmitting the read parameter information to the musical tone forming apparatus.

Furthermore, a control means is provided for automatically changing and controlling the operation state of the operator based on a set of parameter information selected and specified by the first switch means.

Hereinafter, the present invention will be described in detail based on illustrated embodiments.

FIG. 1 is a block diagram showing an embodiment of a parameter setting device according to the present invention. In the figure, reference numeral 1 denotes an operator circuit equipped with a plurality of setting operators for setting parameters such as pitch, timbre, volume, and effects, and 2 detects the status of each operator in the operator circuit 1, and An operator control circuit stores parameter information corresponding to the state in a buffer memory device 3 (to be described later); 3 is a buffer memory that stores parameter information corresponding to each operator state of the operator circuit 1 under the control of the operator control circuit 2; Device,
Reference numeral 4 denotes a parameter memory device for storing a plurality of sets of parameter information set by the operator circuit 1, and 5 a plurality of select switches for selecting one set of the plurality of sets of parameter information stored in the parameter memory device 4. Select switch circuit with 6
7 is a read control circuit that performs control to read a set of parameter information specified by the select switch of the select switch circuit 5 from the parameter memory device 4; 7 is the parameter information read from the buffer memory device 3 and the parameter memory device 4; 8 is a compare switch for comparing the musical tones based on the old and new parameter information.The output of this switch 8 is supplied to the select control input of the selector 7, and the output of the switch 8 is supplied to the select control input of the selector 7. It is configured to alternately select and output parameter information read from devices 3 and 4.

By the way, in the above configuration, the select switch circuit 5 includes not only a select switch for specifying one set of parameter information among a plurality of sets of parameter information, but also a select switch that specifies one set of parameter information.
A STORE switch is provided for writing a set of parameter information set by the operators in the parameter memory device 4. Then, after setting a set of parameter information such as tones and effects by the operators in the operator circuit 1 and storing them in the buffer memory device 3, one select switch in the select switch circuit 5 is operated, and the store switch is When the select switch is operated, a set of parameter information stored in the buffer memory device 3 is transferred and stored in the storage location of the parameter memory device 4 corresponding to the select switch operated at this time. This transfer/storage control is performed by a write control circuit (not shown). That is, parameter information to be stored in the parameter memory device 4 is given via the buffer memory device 3, its writing position is designated by a select switch, and a write command is given by a store switch.

Further, in the above configuration, a set of parameter information specified by the select switch and read from the parameter memory device 4 is controlled by the write signal W generated for a short time from the read control circuit 6 when the select switch is operated. The data is transferred and stored in the buffer memory device 3. The parameter information transferred and stored in the buffer memory device 3 is supplied to the selection input (A) of the selector 7, and is also supplied to the operator control circuit 2, and the operator control circuit 2 receives the parameter information supplied at this time. The controller circuit 1 is configured to automatically change the operator state in response to the change in the operator circuit 1.

That is, each operator of the operator circuit 1 is provided with an electric drive mechanism that automatically changes its position or state by rotation of a motor, etc., and a buffer memory device 3 is provided for the operator control circuit 2. When the parameter information is supplied from the controller circuit 1 and the write signal W is supplied from the read control circuit 6, the operator control circuit 2 uses the electric drive mechanism to control the operator circuit 1.
The controller is configured to automatically change each operator to a position or state corresponding to the parameter information supplied at this time.

In the parameter setting device configured as described above, when a desired set of parameter information regarding timbre, effect, etc. is set by operating the controls in the control circuit 1, the control circuit 2 detects the state of the control. , the parameter information set at this time is stored in the buffer memory device 3. Here, when the n-th select switch and the store switch are operated in the select switch circuit 5, for example, when the n-th select switch is operated and the store switch is operated, a set of parameter information stored in the buffer memory device 3 is changed to a parameter by the control of a write control circuit (not shown). Among the plurality of storage locations in the memory device 4, the data is transferred and stored in the storage location corresponding to the n-th select switch.

By repeating such operations, it is possible to store one set of different desired parameter information in each storage location of the parameter memory device 4.

Next, when only the n-th select switch is operated without operating the store switch, the set of parameter information corresponding to the n-th select switch among the multiple sets of parameter information stored in the parameter memory device 4 is read out under the control of the read control circuit 6. The read parameter information is then transferred and stored in the buffer memory device 3 by a write signal W generated from the read control circuit 6.

The parameter information transferred and stored in the buffer memory device 3 is read out when the write signal W stops and the memory device 3 enters the read mode, and is supplied to the select input (A) of the selector 7 and the operator control circuit 2.

The selector 7 alternately selects and outputs the parameter information supplied to the select inputs (A) and (B) each time the conveyor switch 8 is turned on, but normally select input (A) is selected. are doing. Therefore, unless the compare switch 8 is turned on, the parameter information of the set corresponding to the n-th select switch read out from the parameter memory device 4 is transferred via the buffer memory device 3 and the selector 7 to the parameters for musical tone formation. Output as information. That is, the parameter information stored in the parameter memory device 4 in advance can be used for musical tone formation in the same manner as in the past.

On the other hand, the operator control circuit 2 is connected to the one corresponding to the nth select switch from the buffer memory device 3.
When a set of parameter information is input, control is performed to change the state of each operator in the operator circuit 1 to a state corresponding to the parameter information input at this time. As a result, the state of each operator is automatically changed to the state corresponding to the nth select switch.

That is, when one piece of previously stored parameter information is read from the parameter memory device 4, in order to know what kind of operator state the parameter information at this time corresponds to, The state of each control is automatically changed. Therefore, when old parameter information set previously is to be slightly modified, by reading this old parameter information, the information is restored as the state of the controller in the controller circuit 1, so that the state of the controller after restoration is You can easily modify old parameter information by referring to . In this case, if you perform an operation to correct old parameter information,
New parameter information corresponding to the new operator state is stored in the buffer memory device 3. At this time, the old parameter information continues to be output from the parameter memory device 4, and this old parameter information is supplied to the select input (B) of the selector 7.

Therefore, with this information, compare switch 8
When the switch is turned on, the selector 7 alternately selects select inputs A and B each time the switch is turned on, and the new parameter information after correction written in the buffer memory device 3 is read out from the parameter memory device 4. The old parameter information will be output alternately. Therefore, if the parameter information output from the selector 7 is input to the tone forming section of the electronic musical instrument and the compare switch 8 is turned on while pressing keys on the keyboard section, new parameter information will be generated each time the compare switch 8 is turned on. Musical tones based on the old parameter information are generated alternately, and the difference between the old and new parameter information can be compared using the actual musical tones.

FIG. 2 is a block diagram showing an embodiment of an electronic musical instrument to which the present invention is applied. Broadly speaking, the electronic musical instrument is composed of a parameter setting section 10 and a tone forming section 20.

In the parameter setting section 10, 100 is a central processing unit that detects parameter information set by the performer according to a control program stored in advance in a program memory 101 and transfers it to the musical tone detection section 20; Working memory that stores detected parameter information, etc., 1
03 is a first operator circuit equipped with a plurality of operators for setting parameter information that determines the basic sound quality of musical tones such as timbre, effect, volume, etc.; 104 is a first controller circuit that is equipped with a plurality of operators for setting parameter information that determines the basic sound quality of musical tones such as timbre, effect, volume, etc.; The second controller is equipped with an operator for setting parameter information with specific changes.
The operator circuit 105 includes select switches SW ₁ to _{SW 8} for selecting one set of parameter information from a plurality of sets of already stored parameter information, and a first operator circuit 1.
A store switch SWst gives a command to write the parameter information set in step 03, and a compare switch to compare the old and new parameter information.
Select switch circuit with SWcmp, 10
Reference numeral 6 denotes a display drive circuit for lighting light emitting diodes (LEDs) provided corresponding to each switch of the select switch circuit 105.

These circuit parts constituting the parameter setting section 10 are connected by a control bus line C.BUS consisting of a data bus line and an address bus line. Then, the first operator circuit 103, the second
The operating states or the on/off states of the switches in the operating element circuit 104 and the select switch circuit 105 are detected by sequential scanning by the central processing unit 100, and are stored in a predetermined storage location of the working memory 102. In this case, the operator states in the operator circuits 103 and 104 are output in analog form as, for example, the manipulated variables of the volume attached to each operator, but these analog signals are processed by AD conversion (not shown). After being converted into a digital signal by the device, it is stored in a predetermined storage location of the working memory 102 as parameter information.

Note that in the first operator circuit 103, the first
As in the illustrated embodiment, an electrical drive mechanism is provided that automatically changes the state of each operator in accordance with parameter information read from working memory 102.

By the way, as shown in the memory map of FIG. 3, the working memory 102 has memory locations for storing eight sets of parameter information that determine the basic tone quality of musical tones corresponding to eight select switches _SW1 to _SW8 .
PMEM(1) to PMEM(8) and second operator circuit 10
A storage location RTMEM for storing the parameter information set in step 4 and a storage location BFMEM corresponding to the buffer memory device 3 in the embodiment of FIG. 1 are secured. Furthermore, the select switch operated in the select switch circuit 105
Memory location SELNO for storing switch numbers (1 to 8) of SW ₁ to _{SW 8} and compare switch SWcmp
The memory location CMPFLG of the compare flag CMP/F indicating which of the two old and new parameter information is being output in response to the on/off operation of A storage location TGSTAD for storing the start address is secured.

In this case, storage locations PMEM(1) to PMEM(8) store parameter information that determines the basic sound quality of musical tones.
The BFMEM includes memory portions mem(1) to mem(N) which are further subdivided in correspondence with operators for setting tones, effects, etc., respectively.

Note that the compare flag CMP·F indicates "1" when outputting old parameter information before modification, and indicates "0" when outputting new parameter information after modification.

On the other hand, the program memory 101 stores control programs for carrying out the processes shown in the flowcharts of FIGS. 4 to 6.

Next, in the musical tone forming section 20, 200 is a keyboard circuit equipped with a key switch corresponding to each key of the keyboard section, 201 is a keyboard circuit 200 that detects a pressed key by monitoring the operation of the key switch, and detects the pressed key. This is a musical tone signal generation circuit that forms a corresponding musical tone signal based on the key information corresponding to the pressed key and the parameter information transferred from the parameter setting section 10, and causes the sound system 202 to generate the generated musical tone signal.

Note that parameter information for the musical tone signal generation circuit 201 is transferred from the parameter setting section 10 via the control bus line C.BUS. Further, the musical tone signal generation circuit 201 is configured using a known musical tone signal forming method such as a harmonic synthesis method or a frequency (or amplitude) modulation method.

The operation of the electronic musical instrument configured as described above is explained in the fourth section.
This will be explained based on the flowcharts shown in FIGS.

Note that in the following, the first operator circuit 103
The parameter information set in is referred to as voice parameter information, and the parameter information set in second operator circuit 104 is referred to as real-time parameter information.

First, the central processing unit 100 repeatedly executes preset processing, voice parameter detection processing, real-time parameter detection processing, voice parameter transfer processing, and real-time parameter transfer processing, as shown in steps 300 to 700 of the main routine in FIG. .

Then, in step 300, one of the select switches SW ₁ to _{SW 8} is operated, and the memory locations PMEM(1) to PMEM(8) of the working memory 102 are
When it detects that the voice parameter information reading operation is instructed, it reads the voice parameter information from the specified storage location and transfers and stores it to the storage location BFMEM as a buffer memory, and also stores the start address information of this transfer storage location. The voice parameter information at this time is written to the memory location TGSTAD, and the voice parameter information at this time is written to the first controller circuit 1.
03, and performs processing to automatically change the state of the operator. Also, when the store switch SWst is operated, the storage location of the working memory 102 is changed.
When it is detected that writing of voice parameter information to PMEM(1) to PMEM(8) is instructed, the memory location as buffer memory is
Processing is performed to write the voice parameter information stored in BFMEM to storage locations PMEM(1) to PMEM(8) designated by select switches _SW1 to _SW8 . In addition, compare switch
When SWcmp detects that an operation is being performed to compare the old and new voice parameter information, it writes the start address information of the storage location where these two voice parameter information are stored to the storage location TGSTAD. performs the process of importing.

Next, in step 400, the operator status in the first operator circuit 103 is detected, and if there is a change compared to the operator status in the previous detection process,
Storage location BFMEM as buffer memory for voice parameter information corresponding to new controller status
Performs processing to write to. Similarly, in the next step 500, the operator status in the second operator circuit 104 is detected, and if there is a change compared to the previously detected operator status, a real-time parameter corresponding to the new operator status is set. Information storage location
Performs processing to write to RTMEM.

After this, in step 600, working memory 1
Referring to the start address information stored in storage location TGSTAD of 02, select switch SW ₁ ~
A process is performed to transfer the voice parameter information specified by SW ₈ or the voice parameter information stored in the storage location BFMEM to the tone forming section 20. Next, in step 700, the real-time parameter information stored in the storage location RTMEM of the working memory 102 is sent to the tone forming section 2.
Perform processing to transfer to 0.

FIG. 5 is a flowchart showing the details of the preset process, in which the central processing unit 100 first switches the select switches SW 1 to SW ₁ in step 301.
It is determined whether any of the SWs ₈ has changed from the off state to the on state. As a result, if there is a select switch that has been turned on, the number of this select switch is set in the accumulator ACC inside the central processing unit 100 in step 302. After that, in step 303, it is determined whether or not the store switch SWst is on. If it is on, the process branches to step 304, and the stored contents of the storage location BFMEM as a buffer memory are transferred to the select switch stored in the accumulator ACC. Memory location PMEM(1) corresponding to number
Transfer to PMEM(8) and store. That is, for example, when the eighth select switch _SW8 is operated and the store switch SWst is turned on, the central processing unit 100
Select the voice parameter information stored in BFMEM at the storage location corresponding to select switch SW ₈ .
Transfer to PMEM(8) and store.

However, if the store switch SWst is not on, the process proceeds from step 303 to step 305, and after writing the storage contents of the accumulator ACC to the storage location SELNO of the working memory 102, in the next step 306, the compare flags CMP and F are written. The content of is set to “0” and this new compare flag is set to “0”.
The contents of CMP・F are transferred to the display drive circuit 106. This allows the compare switch SWcmp
The light emitting diode provided correspondingly is turned off.

Next, in step 307, the central processing unit 100 stores the storage location of the working memory 102.
The select switch number stored in SELNO is transferred to the display drive circuit 106. As a result, the light emitting diode corresponding to the operated select switch in the select switch circuit 105 is lit.

After this, the central processing unit 100 performs the step
308, the memory location corresponding to the select switch number stored in memory location SELNO
Read the voice parameter information from PMEM(1) to PMEM(8) and store it in the memory location as buffer memory.
Write to BFMEM and also this storage location
Storage location of BFMEM start address information
Write to TGSTAD. i.e. for example memory location
If the select switch number stored in SELNO is "8" and the first address of the storage location BFMEM is assigned to address "900",
The central processing unit 100 transfers a set of voice parameter information stored in the storage location PMEM(8) to the storage location BFMEM as a buffer memory and stores it therein, and also
The head address information "900" is stored in the storage location TGSTAD of the working memory 102.

As a result, in the voice parameter transfer process in the main routine, a set of voice parameter information having address "900" as the first address is transferred to the tone forming section 20.

Next, in step 309, the central processing unit 100 stores the memory location as a buffer memory.
The memory contents of BFMEM are transferred to the first control circuit 103.
Transfer to. As a result, the first operator circuit 1
The state of the control at 03 is the select switch.
Memory location PMEM specified by SW ₁ to SW ₈
The state is automatically changed to correspond to the voice parameter information read from (1) to PMEM (8).

In this way, the central processing unit 100 operates the select switches SW ₁ to SW ₈ and the store switch
Controls reading or writing of voice parameter information in response to SWst operations. Note that if none of the select switches SW ₁ to _{SW 8} are operated, the process branches from step 301 to step 310.

After this, the central processing unit 100 performs the step
At step 310, it is determined whether the compare switch SWcmp has changed from the off state to the on state. If it remains off, the process moves from step 310 to the voice parameter detection process of the main routine. However, if the compare switch SWcmp is turned on, it is determined in the next step 311 whether or not the content of the compare flag CMP·F is "0". As a result, the compare flag CMP
If the content of F is “0”, the start address information of the memory locations PMEM(1) to PMEM(8) corresponding to the select switch number stored in the memory location SELNO is stored in the memory location of the working memory 102.
Store it in TGSTAD. After this, step 313
Set the contents of the compare flag CMP・F to “0” at
In the next step 314, the contents of this new compare flag CMP.F are transferred to the display drive circuit 106.

As a result, the light emitting diode provided corresponding to the compare switch SWcmp lights up, indicating that the compare switch SWcmp has been operated.

However, if the content of the compare flag CMP・F is "1" in the determination result of step 311,
In step 315, the central processing unit 100 stores the head address information of the storage location BFMEM as a buffer memory in the storage location TGSTAD of the working memory 102. After this, step
In step 316, change the contents of the compare flag CMP・F from "1" to "0", and then proceed to the next step.
This new compare flag CMP・F in 317
The contents of are transferred to the display drive circuit 106.

As a result, the light emitting diode provided corresponding to the compare switch SWcmp is turned off.

Therefore, when the compare switch SWcmp is turned on while the contents of the compare flag CMP・F are "0", one set of voices corresponding to the select switch number stored in the memory location SELNO is stored in the memory location TGSTAD. Since the leading address information of the parameter information is written, in the voice parameter transfer process 600 in the main routine, the voice parameter information corresponding to the select switch number is transferred to the tone forming section 20.
In this case, the fact that the voice parameter information corresponding to the select switch number is being transferred is indicated by the lighting of the light emitting diode corresponding to the compare switch SWcmp.

Conversely, the content of compare flag CMP・F is “1”
When the compare switch SWcmp is turned on in the state of voice parameter information is transferred to the tone forming section 20.

Therefore, among the select switches _SW1 to _SW8 , for example, step _SW8 is operated to select the working memory 1.
After reading out the old voice parameter information previously stored in storage location PMEM (8) of 02, operate the operator of the first operator circuit 103 to correct this old parameter information, and then turn on the compare switch. When SWcmp is turned on, the old parameter information stored in the memory location PMEM (8) is first transferred to the tone forming section 20, and when the compare switch SWcmp is then turned on, the
The new voice parameter information after modification stored in the BFMEM is now transferred to the tone forming section 20. In other words, one compare switch
By turning SWcmp on and off, it is possible to alternately transfer new and old voice parameter information to the tone forming section 20.

FIG. 6 is a flowchart showing the details of the voice parameter detection process 400. First, in step 401, the central processing unit 100 selects the first operator among the plurality of operators provided in the first operator circuit 103. The parameter information corresponding to the state of the controller is read into the accumulator ACC. After this,
In step 402, the parameter information read into the accumulator ACC is compared with the parameter information corresponding to the first operator stored in the storage location BFMEM, and it is determined that there is a change in the state of the first operator. Detect whether. As a result, the first
If there is a change in the state of the 1st operator, the latest parameter information read into the accumulator ACC is stored in the memory portion mem(1) corresponding to the 1st operator in the storage location BFMEM. However, the first
If there is no change in the state of the second operator, the states of the second and subsequent operators are detected in the same manner.

As a result, the voice parameter information corresponding to the latest operation state is always stored in the storage location BFMEM.

When the voice parameter information and real-time parameter information are transferred from the parameter setting section 10 to the musical tone forming section 20 as described above, the musical tone signal generating circuit 201 in the musical tone forming section 20 uses this voice parameter information and real-time parameter information, Based on the key information corresponding to the key, a musical sound signal having a corresponding pitch, timbre, volume, and effect is formed and generated as a musical sound from the sound system 202.

Therefore, in the electronic musical instrument configured as described above, the compare switch of the parameter setting section 10 is
If you repeatedly turn SWcmp on and off and press a key on the keyboard, the compare switch
Each time SWcmp is turned on or off, musical tones based on the old parameter information and the new parameter information after modification are played alternately, making it extremely easy to use the actual musical tones to detect the difference between the old and new parameter information. can only be compared.

In addition, in this embodiment, the select switch
SW ₁ to _{SW 8} , the store switch SWst, and the compare switch SWcmp may allocate equivalent functions to specific keys on the keyboard section, and the above-described control may be realized by operating these keys.

Furthermore, although the state of the operator in the first operator circuit 103 is automatically changed by an electric drive mechanism, each parameter information is digitally set by a switch or the like and stored in a register. If the set value is displayed on the numeric display based on the contents stored in the register, the parameter information set by each controller can be displayed by transferring the parameter information read from the parameter memory to the register. can be changed automatically without an electrical drive mechanism.

As is clear from the above description, according to the present invention, with an extremely simple configuration, it is possible to easily select one parameter information group from the parameter storage area and modify desired parameter information therein. In addition, it is now possible to alternately generate musical tones based on each parameter information group before and after modification using a switch, which is very convenient when modifying parameter information stored in the parameter memory device. Since the parameter memory and buffer memory are provided at the address positions of each area on the same memory, the memory configuration can be simplified, and each parameter information group can be transferred to the musical tone generator side by simply specifying one address. Processing becomes much easier.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a block diagram showing an embodiment of an electronic musical instrument to which the invention is applied, and Fig. 3 shows the storage divisions of the working memory in Fig. 2. Memory map, 4th
6 to 6 are flowcharts showing the control processing contents of the parameter setting section of FIG. 2. 1, 103, 104...Manipulator circuit, 2...Manipulator control circuit, 3...Buffer memory device, 4...
...Parameter memory device, 5,105...Select switch circuit, 6...Reading control circuit, 7...
Selector, 8... Compare switch, 100...
Central processing unit, 102...working memory.

Claims (1)

[Scope of Claims] 1. A parameter storage area that stores a plurality of parameter information groups consisting of a plurality of parameter information for musical tone formation, and a buffer storage area that can store at least one parameter information group; a parameter storage memory in which a storage area and a buffer storage area are selectively designated by address positions on the same memory; operator means for changing and setting parameter information; and a plurality of sets stored in the parameter storage area. a first switch means for selecting and specifying a desired set of the parameter information groups; and the parameter storage in which the set of parameter information selected and specified in response to the selection operation of the first switch means is stored. a transfer means for specifying an address position of the area and reading out a set of parameter information stored at this address position and transferring it to the buffer storage area; a change control means for changing and controlling desired parameter information according to the operation of the operator means; a second switch means; each time the second switch means is operated;
Alternately specifying the address position of the buffer storage area and the address position of the parameter storage area where the parameter information group selected and specified according to the selection operation of the first switch means, and A parameter setting device for an electronic musical instrument, comprising parameter information selection and output means for reading out a group of parameter information at an address position and sending it to a musical tone forming device. 2. It has a parameter storage area that stores a plurality of parameter information groups consisting of a plurality of parameter information for musical tone formation, and a buffer storage area that can store at least one set of parameter information groups, and the parameter storage area and the buffer storage A memory for storing parameters whose areas are selectively designated by address positions on the same memory, operator means for changing and setting parameter information, and one of a plurality of sets of parameter information stored in the parameter storage area. a first switch means for selecting and specifying a desired set of parameters; and specifying an address position of the parameter storage area in which a group of parameter information of the selected set is stored in response to the selection operation of the first switch means. transfer means for reading out a set of parameter information stored at this address location and transferring it to the buffer storage area; a change control means that performs change control according to the operation of the operator means; a second switch means; each time the second switch means is operated;
Alternately specifying the address position of the buffer storage area and the address position of the parameter storage area where the parameter information group selected and specified according to the selection operation of the first switch means, and parameter information selection and output means for reading out the parameter information group at the address position and sending it to the musical tone forming device; A parameter setting device for an electronic musical instrument, comprising a control means for automatically changing and controlling the operation state of a child.