JP3130600B2 - Controller for electronic musical instruments - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller for an electronic musical instrument, and more particularly, to a controller for an electronic musical instrument having an operator capable of continuously changing a position from a lower end operation position to an upper end operation position. To a controller for an electronic musical instrument.

[0002]

2. Description of the Related Art As a conventional operator control device, for example,
There is an operator that can be moved continuously from the lower end operation position to the upper end operation position to change the operation position, and the operator has a parameter value for each operation position. There is known an operator control device which is assigned in advance and can change the value of a parameter by moving the operator. In such an operation controller, when the operation position is changed by moving the operation element in order to change the value of the parameter assigned to the operation element, the value of the parameter is controlled by the operation of the operation element. The value is always absolutely determined to a value set in advance corresponding to the position. Therefore, according to this operator control device, the value of the parameter assigned according to the operation position of the operator does not always change, so the value of the parameter corresponding to the current operation position of the operator is It was easy for the operator to grasp visually.

[0003]

However, in the above-described conventional control device for controlling an operation device, for example, an operation device in which parameters are set in advance, such as a separately provided up / down switch or the like, is used. When an operation of another operator is performed to increase or decrease the value of a preset parameter, or to change the type of a parameter assigned to the operator in advance, the operation of the operator is performed. Between the current operating position and the value of the assigned parameter,
In some cases, an absolute correspondence that has been set in advance does not exist. For this reason, in a state where such a previously set absolute correspondence no longer exists, if the operation position of the operation element is changed by moving the operation element, the parameter assigned to the operation element is changed. The value is determined by the value of the parameter corresponding to the operating position of the operating element after the movement, regardless of the moving amount of the operating element. There was a problem that it was difficult to grasp the relationship with the.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to link an operation amount of an operation element and a change amount of a parameter value with each other. Another object of the present invention is to provide a control device for an electronic musical instrument in which an operator can easily grasp the relationship between the operation amount of the operation device and the change amount of the parameter value.

[0005]

In order to achieve the above object, an electronic musical instrument control device according to the present invention is provided by operating the electronic musical instrument control device at an arbitrary position from one end position to the other end position. An operator for setting a parameter value, a parameter memory for storing a plurality of parameter values, parameter selecting means for selecting one of the parameters stored in the parameter memory, and a parameter selected by the parameter selecting means The position of the operating element at the time of the end of the selected parameter according to the position of any one of the end position of the operating element and the position of the operating element set after the time selected by the parameter selection means Interpolating means for setting a value interpolated based on the value and a parameter value corresponding to any one of the end positions as a new parameter value. It was. Further, an operator control device according to the present invention includes an operator for setting a value of a predetermined parameter by operating an arbitrary position from one end position to the other end position, and a parameter for storing the value of the parameter. A memory, parameter value changing means different from the operation element for changing the value of the parameter stored in the parameter memory, and the position and the end position of the operation element when the parameter value is changed by the parameter value changing means The changed parameter value and the one of the end positions in accordance with the position of the operation element set after the parameter value is changed by the parameter value changing means. Interpolation means for setting a value interpolated based on the value of the parameter corresponding to the position as a new parameter value is provided.

[0006]

According to the present invention described above, since the operation amount of the operation element and the change amount of the parameter value are linked, the operator can easily determine the relationship between the operation amount of the operation element and the change amount of the parameter value. I can understand.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an electronic musical instrument control device according to an embodiment of the present invention.

FIG. 1 is a block diagram showing a case where the controller for an electronic musical instrument according to the present invention is used for controlling a controller for changing a timbre, a volume and the like. This electronic musical instrument controls the entire operation by a central processing unit (CPU) 1.
It is configured to control using 0. This CPU
A read-only memory (ROM) 10 stores, via a bus, a predetermined program for controlling the entire operation and various data used when the program is executed.
And a random access memory (RA) in which various register groups described later are set.
M), a keyboard device 16 for inputting pitch information KEY and volume information VELO to the CPU 10 by a performance operation, and data necessary for generating musical tones.
For example, a parameter memory 18, which is a RAM for storing envelope data for controlling the volume, etc., an operator 20, which will be described later, and a musical sound generator 22 which forms musical sound signals by a method of reading out a waveform memory, are connected. Further, an acoustic device 24 including an amplifier, a speaker, and the like is connected to the musical sound generating device 22.

Therefore, in this electronic musical instrument, when the pitch information KEY and the volume information VELO obtained by the playing operation of the keyboard device 16 are input to the CPU 10, the CP
U10 is the input pitch information KEY and volume information VEL.
In response to O, the tone generation information NOTE of the tone signal is input to the tone generator 22 based on the parameters in the parameter memory 18. And the musical sound generator 2
2 is musical tone generation information NOTE input from CPU 10
The tone signal is generated as a tone into the space by the acoustic device 24.

The operator 20 is capable of continuously moving from the upper limit position MAX to the lower limit position MIN to change the operation position, and a parameter for selecting a parameter assigned to the operator 20A. The switch 20B includes a selection switch 20B and a parameter change switch 20C that can arbitrarily change the value of a parameter assigned to the operation element 20A. Occurs, the operation information O
The PR is input to the CPU 10. In addition, the parameter selection switch 20B switches the envelopes A (attack time) and D (decay).
y) Time), S (sustain level) and R (release time) attack time switches 20B
a, decay time switch 20Bd, sustain level switch 20Bs, release time switch 2
0Br. Further, a parameter change switch 20C
Is an up switch 20Cu that increases the value of the parameter.
And a down switch 20Cd for decreasing the value of the parameter
It is composed of

Note that the parameter change switch 20C is
Each time the up switch 20Cu is operated, the parameter value increases by a predetermined value, and each time the down switch 20Cd is operated, the parameter value decreases by a predetermined value.

An operator 2 constituting such an operator 20
0A, the operation information OPR is input by operating the parameter selection switch 20B and the parameter change switch 20C, and the CPU 10 receives the operation information OPR based on the type of the operation information OPR based on the operation element 20A, the parameter selection switch 20B and the parameter change switch 20C. Is determined, and an initialization routine and a calculation routine, which will be described in detail below, are executed based on the flowchart.

The registers set in the work area 14 are stored in the program memory 12 by the CPU 10.
For temporarily storing various data generated when executing the control program stored therein, there are the following registers related to the implementation of the present invention. In the following description, the contents (data and the like) of each register are represented by the same label name unless otherwise specified.

(1) Current position of control element NOW_POS This register stores the current position of control element 20A.

(2) Stored position OLD of operator
_POS This register is used to store the operation position in the previous operation of the operation element 20A.

(3) Parameter maximum value MAX_VAL This register stores the parameter maximum value assigned to the operation element 20A by the parameter selection switch 20B.

(4) Parameter minimum value MIN_VAL This register stores the parameter minimum value assigned to the operation element 20A by the parameter selection switch 20B.

(5) Current value of parameter NOW_VAL This register stores the current value of the parameter at the current position NOW_POS of the operator.

(6) Direction of operation of the operation element DIRECT This register stores the operation direction of the operation element 20A. In the initial state where the operation element 20A is not moved, "0" is set. You.

(7) Position BS of the operation element before the operation direction is changed
E_POS This register stores the operation position in the previous operation when the operation direction of the operation element 20A has changed from the previous operation direction.

(8) Parameter value B before operation direction change
SE_VAL This register stores the parameter value at the position BSE_POS of the operator before the operation direction of the operator 20A changes.

The various data stored in the program memory 12 and used when executing the program include an upper limit MAX_POS of the operator and a lower limit MIN_P of the operator.
There is an OS. The upper limit MAX_POS of the operator is the operator 2
It indicates the upper limit position MAX of the movement of 0A, while
The lower limit MIN_POS of the operator indicates the lower limit position MIN of the movement of the operator 20A.

Next, the operation of the controller of the electronic musical instrument will be described step by step with reference to the flowcharts of FIGS. 2 to 5 and the operation example of FIG. In this electronic musical instrument, pitch information KEY and volume information VELO obtained by a performance operation of the keyboard device 16 are obtained by a known technique in a known main routine (not shown).
When input to the CPU 10, the CPU 10 inputs the tone generation information NOTE of the tone signal to the tone generator 22 based on the parameters in the parameter memory 18 in accordance with the input pitch information KEY and volume information VELO. become. The tone generator 22 generates a tone signal based on the tone generation information NOTE input from the CPU 10, and the tone signal is emitted to the space by the audio device 24 as a tone. In addition, the operator 20
A, when an operation is performed on the parameter selection switch 20B and the parameter change switch 20C, the operation information OPR is input to the CPU 10. An operator 20A, a parameter selection switch 20B, and a parameter change switch 20C that constitute such an operator 20
CPU 1 to which the operation information OPR is input by the operation of
0 is operation information OP based on the operator 20A, the parameter selection switch 20B, and the parameter change switch 20C.
It is determined which operator has been operated according to the type of R, and the initialization routine and the calculation routine are executed based on the flowcharts shown in FIGS.

First, a first embodiment of the present invention will be described in detail with reference to FIGS. Note that the operation unit 20
Is operated, the value of the parameter assigned to the operator 20A of the parameter memory 18 is changed by a process (not shown).

The parameter selection switch 20 of the operator 20
When the operator B is operated, the parameters assigned to the operator 20A are changed, each register is initialized according to the flowchart shown in FIG. 2, and when the operator 20A of the operator 20 is operated, According to the flowchart shown in FIG. 3, the value of the parameter assigned to the operation element 20A of the parameter memory 18 is changed.

FIG. 2 shows an initialization routine, which is executed when the parameter selection switch 20B is operated to change the type of parameter assigned to the operator 20A. In this initialization routine, in step S202, the operation information OP
Based on R, a value indicating the current position of the operation element 20A is set to OL.
D_POS, and the minimum and maximum values of the parameters assigned to the operator 20A are read out from the program memory 12, and the minimum value MI of each parameter is read.
The processing is terminated by substituting N_VAL and the maximum value MAX_VAL of the parameter. When the processing in step S202 ends, the initialization routine ends.

FIG. 3 shows a calculation routine. An interval clock generated by an interval timer (not shown) arrives at the CPU 10 when the position of the operator 20A is moved, or at regular intervals, for example. It is executed every time.

First, in step S301, the operation information O
Based on the PR, a value indicating the current position of the operation element 20A is
Substitute for the current position NOW_POS of the operator. When the processing in step S301 ends, the process proceeds to step S302.

In step S302, the current position of the operator NOW_POS and the stored position OLD_ of the operator are stored.
It is determined whether or not the POS is the same. The determination result is affirmative (YES), that is, the current position of the operation element NOW_PO.
If S and the stored position OLD_POS of the operation element are the same, this calculation routine ends.

On the other hand, if the result of the determination is negative (NO), that is, if the current position NOW_POS of the operator and the stored position OLD_POS of the operator are not the same, the flow proceeds to step S303.

In step S303, among the parameters stored in the parameter memory 18, the operator 20A
Is read out and assigned to the current value NOW_VAL of the parameter. When the processing in step S303 ends, the process proceeds to step S304.

In step S304, the stored position OLD_POS of the operator is changed to the current position NOW of the operator.
It is determined whether it is greater than _POS. This determination result is affirmative, that is, the stored position OLD_PO of the operating element.
If S is greater than the current position NOW_POS of the operator (the operator 20A has moved in the direction of the lower limit position MIN), the process proceeds to step S306.

In step S306, the operator 20A
This shows the calculation of the parameter value when moving in the direction of the lower limit position MIN. The current position of the operation element NOW_POS, the stored position OLD_POS of the operation element, and the lower limit M of the operation element are shown.
From IN_POS, the minimum value MIN_VAL of the parameter, and the current value NOW_VAL of the parameter, the current value NOW_VAL of the new parameter at the current position NOW_POS of the operation element, that is, the current value NOW_VAL of the parameter at the position of the operation element 20A after the operation is calculated and obtained. . Specifically, the calculation in step S306 is as follows:
Lower limit MIN of the operator from the current value NOW_POS of the operator
_POS is subtracted from the current value of the parameter NOW_V
AL multiplied by the stored position OL of the control
A value is obtained by adding a value obtained by subtracting the current value NOW_POS of the operator from D_POS and a value obtained by multiplying the minimum value MIN_VAL of the parameter, and further obtains this value from the stored position OLD_POS of the operator and the lower limit of the operator. MIN
_POS is divided by the subtracted value, and the result is the current value NOW_VAL of the new parameter at the current position NOW_POS of the operator. Step S30
When the process of No. 6 is completed, the process proceeds to a step S310.

On the other hand, if the decision result in the step S304 is negative, that is, the stored position OLD_POS of the operator is determined.
Is not larger than the current position NOW_POS of the operator (the operator 20A has moved in the upper limit position MAX direction), the process proceeds to step S308.

In step S308, the operator 20A
The upper limit position shows the calculation of the parameter value when moved in the MAX direction, and shows the current position of the operation element NOW_POS, the stored position OLD_POS of the operation element, and the upper limit M of the operation element.
From AX_POS, the maximum value MAX_VAL of the parameter, and the current value NOW_VAL of the parameter, the current value NOW_VAL of the new parameter at the current position NOW_POS of the operation element, that is, the current value NOW_VAL of the parameter at the position of the operation element 20A after the operation is calculated and obtained. . Specifically, the calculation in step S308 is:
The current position number of the operator from the upper limit MAX_POS of the operator
The current value of the parameter NOW_ is subtracted from the value obtained by subtracting W_POS.
VAL multiplied by the current position of the operator NOW_PO
A value obtained by adding a value obtained by subtracting the stored position OLD_POS of the operator from S to a value obtained by multiplying the maximum value MAX_VAL of the parameter by the operator is obtained, and this value is further obtained from the upper limit MAX_POS of the operator. Child position O
LD_POS is divided by the subtracted value, and the result is the current value NOW_VAL of the new parameter at the current position NOW_POS of the operator. Step S
Upon completion of the process in S308, the process proceeds to Step S310.

In step S310, the current position NOW_POS of the operator is substituted into OLD_POS, and the current value NOW_VAL of the parameter obtained in step S306 or step S308 is stored in the parameter memory 18 among the parameters stored in the parameter memory 18. The parameter is assigned to the parameter assigned to the child 20A. When the processing in step S310 is completed, the calculation routine ends.

Next, a second embodiment according to the present invention will be described in detail with reference to FIGS. When the parameter selection switch 20B of the operator 20 is operated, the parameters assigned to the operator 20A of the parameter memory 18 are changed, and each register is initialized according to the flowchart shown in FIG. When the parameter change switch 20C of the operation element 20 is operated,
The value of the parameter assigned to the operator 20A in the parameter memory 18 is changed. When the operator 20A of the operator 20 is operated, the value of the parameter assigned to the operator 20A in the parameter memory 18 is changed according to the flowchart shown in FIG.

FIG. 4 shows an initialization routine, which is executed when the parameter selection switch 20B is operated to change the type of parameter assigned to the operator 20A.

In this initialization routine, in step S402, "0" is substituted for the operation direction DIRECT of the operation element, and the operation element 2 is determined based on the operation information OPR.
The value indicating the current position of 0A is assigned to OLD_POS, the minimum value and the maximum value of the parameter assigned to the operator 20A are read from the program memory 12, and are respectively assigned to the parameter minimum value MIN_VAL and the parameter maximum value MAX_VAL, Further parameter memory 1
Among the parameters stored in 8, the value of the parameter assigned to the operation element 20 </ b> A is read, and the read value is substituted for the current value NOW_VAL of the parameter, and the process ends. When the processing in step S402 ends, the initialization routine ends.

FIG. 5 shows a calculation routine. An interval clock generated by an interval timer (not shown) arrives at the CPU 10 when the position of the operator 20A is moved or at regular intervals, for example. It is executed every time.

First, in step S501, the operation information O
Based on the PR, a value indicating the current position of the operation element 20A is
Substitute for the current position NOW_POS of the operator. When the processing in step S501 ends, the process proceeds to step S502.

In step S502, the current position of the operator NOW_POS and the stored position OLD_ of the operator are stored.
It is determined whether or not the POS is the same. If the result of the determination is affirmative, that is, if the current position NOW_POS of the manipulator is the same as the stored position OLD_POS of the manipulator, this calculation routine is terminated.

On the other hand, the result of the determination is negative, that is, the current position NOW_POS of the operator and the stored position O of the operator.
If LD_POS is not the same, step S503
Proceed to.

In step S503, the current value NOW_VAL of the parameter is compared with the value of the parameter assigned to the operation element 20A among the parameters stored in the parameter memory 18, and whether or not both are the same is determined. Judge. If the result of the determination is affirmative, that is, if the current value NOW_VAL of the parameter is the same as the value of the parameter stored in the parameter memory 18 assigned to the operator 20A, the process proceeds to step S505.

On the other hand, if the result of the determination is negative, that is, if the current value NOW_VAL of the parameter is not the same as the value of the parameter stored in the parameter memory 18 assigned to the operator 20A, the flow proceeds to step S504.

In step S504, "0" is substituted for the operation direction DIRECT of the operator, and the value of the parameter assigned to the operator 20A among the parameters stored in the parameter memory 18 is changed to the current parameter value. Substitute for the value NOW_VAL. Step S5
When the process of step S04 is completed, the process proceeds to step S505.

In step S505, the stored position OLD_POS of the operator is changed to the current position NOW of the operator.
It is determined whether it is greater than _POS. This determination result is affirmative, that is, the stored position OLD_PO of the operating element.
If S is larger than the current position of the operation element NOW_POS (the operation element 20A has moved in the direction of the lower limit position MIN), the process proceeds to step S506.

In step S506, it is determined whether or not the stored value of the operation direction DIRECT of the operation element matches "-1". The determination result is positive, that is, the value of the stored operation direction DIRECT of the operation element is “−1”.
If it is, the process proceeds to step S510. On the other hand, the determination result is negative, that is, the stored operation direction D of the operation element.
If the value of IRECT is not "-1", step S
Proceed to 508.

In step S508, a process for initializing each register required for calculation is executed. That is, “−1” is substituted for the operation direction DIRECT of the operation element, and the position BSE_POS of the operation element before the change of the operation direction is
The stored value of the position OLD_POS of the operator is substituted, and the value BSE_V of the parameter before the operation direction is changed is further substituted.
The value of the current value NOW_VAL of the parameter is substituted for AL. Upon completion of the process in the step S508, the process proceeds to a step S510.

Step S510 shows the calculation of the parameter value when the operator 20A moves in the direction of the lower limit position MIN, the current position of the operator NOW_POS, the lower limit MIN_POS of the operator, and the minimum value MIN_VA of the parameter.
L, the position BSE_POS of the operator before the operation direction change and the value BSE_VAL of the parameter before the operation direction change,
The current value NOW_VAL of the new parameter at the current position NOW_POS of the operator, that is, the operator 2 after the operation
Current value NOW_V of the parameter at the operation position of 0A
Calculate and find AL. Specifically, step S510
Is calculated by multiplying a value obtained by subtracting the lower limit MIN_POS of the control from the current position NOW_POS of the control by a parameter value BSE_VAL before the change in the control direction,
A value is obtained by adding a value obtained by subtracting the current position NOW_POS of the control element from the position BSE_POS of the control element before the change in the operation direction and a value obtained by multiplying the value by a minimum value MIN_VAL of the parameter. This is divided by the value obtained by subtracting the lower limit MIN_POS of the operator from the position BSE_POS of the operator, and the result is the current value NOW_VAL of a new parameter at the current position NOW_POS of the operator. When the processing in step S510 ends, the process proceeds to step S512.

On the other hand, the result of the determination in step S504 is negative, that is, the stored position OLD_POS of the operating element.
Is not larger than the current position NOW_POS of the operator (the operator 20A has moved in the upper limit position MAX direction), the process proceeds to step S507.

In step S507, it is determined whether or not the stored value of the operation direction DIRECT of the operation element matches "1". If the determination result is affirmative, that is, if the value of the stored operation direction DIRECT of the operation element is “1”, the process proceeds to step S511. On the other hand, the determination result is negative, that is, the stored operation direction DIR of the operation element.
If the value of ECT is not “1”, step S509
Proceed to.

In step S509, processing for initializing each register required for calculation is executed. That is, "1" is substituted for the operation direction DIRECT of the operator,
Substituting the value of the stored position OLD_POS of the operator into the position BSE_POS of the operator before the change of the operation direction,
Furthermore, the value BSE_VAL of the parameter before the operation direction changes
Is substituted for the value of the current value NOW_VAL of the parameter. When the processing of step S509 is completed, step S509
Proceed to 511.

Step S511 shows the calculation of the parameter value when the operator 20A has moved in the upper limit position MAX direction. The operator's current position NOW_POS, the operator upper limit MAX_POS, and the parameter maximum value MAX_VA.
L, the position BSE_POS of the operator before the operation direction change and the value BSE_VAL of the parameter before the operation direction change,
The current value NOW_VAL of the new parameter at the current position NOW_POS of the operator, that is, the operator 2 after the operation
Current value NOW_V of the parameter at the operation position of 0A
Calculate and find AL. Specifically, step S511
Is calculated by multiplying a value obtained by subtracting the current position NOW_POS of the control from the upper limit MAX_POS of the control by a value BSE_VAL of the parameter before the change in the operation direction,
A value is obtained by adding a value obtained by subtracting the position BSE_POS of the operation element before the operation direction change from the current position NOW_POS of the operation element to a value obtained by multiplying the maximum value MAX_VAL of the parameter, and further obtaining this value as the upper limit MAX_POS of the operation element. Is divided by a value obtained by subtracting the position BSE_POS of the operator before the change of the operation direction from, and the result becomes the current value NOW_VAL of the new parameter at the current position NOW_POS of the operator. When the processing in step S511 ends, the process proceeds to step S512.

In step S512, the current position NOW_POS of the operator is substituted for OLD_POS, and the current value NOW_VAL of the parameter obtained in step S510 or step S511 is stored in the parameter memory 18 among the parameters stored in the parameter memory 18. The parameter is assigned to the parameter assigned to the child 20A. When the processing in step S512 ends, the calculation routine ends.

Next, the relationship between the change in the position due to the movement of the operation element 20A and the change in the parameter value will be described using an operation example according to the first embodiment shown in FIG. Note that reference numeral 3
0 indicates a parameter display section, where the lower limit position MIN of the operator 20A is “0: MIN_POS”, the upper limit position MAX of the operator 20A is “1: MAX_POS”, the minimum value of the parameter is “0: MIN_VAL”, and the parameter is Is set as “100: MAX_VAL”.
In the first step (a), the position of the control 20A is set to "0.5: OLD_POS", and the current value of the parameter is set to "0: NOW_VAL".

In step (b), since the position of the operation element 20A has moved to "0.75: NOW_POS", the value of the parameter is calculated by the following formula using "計算 (0 × (1-0.75)". ) + 100 × (0.75-
0.5)｝ ÷ (1−0.5) = 50 ”, and“ 50 ”is the current value NOW_ of the new parameter.
VAL, and “50” is displayed on the display unit 30.

Next, in step (c), the operator 20A
Has moved to “1: NOW_POS”, the value of the parameter is calculated as “{50 × (1-1) + 100 × (1−0.75)} by the calculation formula in step S308.
(1−0.75) = 100 ”, and“ 100 ”is the current value NOW of the new parameter.
_VAL, and “100” is displayed on the display unit 30.

Next, in step (d), the operator 20A
Moved to “0.5: NOW_POS”,
The value of the parameter is “{100 × (0.5−0) + 0 × (1−0.5)} (1−0) = 50” according to the calculation formula of step S306, and “50” is a new parameter. Current value of NOW_
VAL, and “50” is displayed on the display unit 30.

Finally, in step (e), the operator 20
Since the position of A has moved to “0: NOW_POS”, the value of the parameter is calculated as “{50 × (0−0) + 0 × (0.5−0)} (0.5 −0) = 0 ”, and“ 0 ”is the current value NOW_V of the new parameter.
AL, and “0” is displayed on the display unit 30.

[0061]

Since the present invention is constructed as described above, the operating direction of the operating element is equal to the direction in which the value of the parameter is increased or decreased, and the operating amount of the operating element and the change in the parameter value are changed. The amount is linked with the amount, and an excellent effect that the operator can easily grasp the relationship between the operation amount of the operation element and the change amount of the parameter value is achieved.

[0062]

[Brief description of the drawings]

FIG. 1 is a block diagram showing a case where an operator control device for an electronic musical instrument according to the present invention is used for controlling an operator for changing a tone color, a volume, and the like.

FIG. 2 is a flowchart of an initialization routine according to the first embodiment of the present invention.

FIG. 3 is a flowchart of a calculation routine according to the first embodiment of the present invention.

FIG. 4 is a flowchart of an initialization routine according to a second embodiment of the present invention.

FIG. 5 is a flowchart of a calculation routine according to a second embodiment of the present invention.

FIG. 6 is an explanatory diagram showing an operation example according to the first embodiment of the present invention.

[Explanation of symbols]

 10 CPU 12 Program memory 14 Work area 16 Keyboard device 18 Parameter memory 20 Operator 20A Operator 20B Parameter selection switch 20Ba Attack time switch 20Bd Decay time switch 20Bs Sustain level switch 20Br Release time switch 20C Parameter change switch 20Cu up Switch 20Cd Down switch 22 Musical sound generator 24 Sound device 30 Display unit

Claims (2)

(57) [Claims] An operator for setting a value of a predetermined parameter by operating an arbitrary position from one end position to the other end position; a parameter memory for storing a plurality of parameter values; Parameter selecting means for selecting any of the parameters stored in the parameter selection means; and a position of the operating element when the parameter is selected by the parameter selecting means and any one of the end positions; A new value interpolated based on the value of the selected parameter and the value of the parameter corresponding to any of the end positions according to the position of the operating element set after the time when it is selected by the means. An operator control device for an electronic musical instrument, comprising: an interpolating means for setting a parameter value. 2. An operator for setting a value of a predetermined parameter by operating an arbitrary position from one end position to another end position; a parameter memory for storing the parameter value; and the parameter memory. A parameter value changing means different from the operation element for changing the value of the parameter stored in the control section; and any one of the position of the operation element and the end position when the parameter value is changed by the parameter value changing means. The end position and the parameter value corresponding to the changed parameter value and any one of the end positions according to the position of the operating element set after the parameter value is changed by the parameter value changing unit. And an interpolating means for using a value interpolated based on the value as a new parameter value.