JP2731380B2 - Parameter setting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a parameter setting device suitable for application to an electronic musical instrument.

[0002]

2. Description of the Related Art A parameter setting device which rotates a knob attached to a rotating shaft and outputs a signal corresponding to the rotating position and the amount of rotation of the rotating shaft has been conventionally known. When this parameter setting device is used, for example, for adjusting the volume of an electronic musical instrument, by rotating the knob, a signal corresponding to the rotation position and the rotation amount of the rotation shaft to which the knob is attached is output, and the signal is output. Is changed by the amount corresponding to.

Also, a switch for changing the set value of the volume of the electronic musical instrument, for example, and then canceling the changed set value and returning to the original set value is provided near the parameter setting device. May be.

[0004]

In order to adjust the volume and cancel it by operating a parameter setting device provided near this switch, it is necessary to separately perform two different operations of the knob and the switch. Because
The operability will be poor. Further, since both the knob and the switch are arranged, there is a problem that an occupied space is widened.

In view of the above circumstances, an object of the present invention is to provide a parameter setting device having two functions, a function of setting parameters for one device and a function as a switch.

[0006]

According to a first aspect of the present invention, there is provided a parameter setting apparatus comprising: a rotary encoder for outputting a signal corresponding to a rotation position or a rotation amount of a rotary shaft; It is characterized by comprising a knob attached by being urged by a spring movably in the axial direction, and a switch to be switched when the knob is moved in the axial direction against the urging of the spring.

Although the parameter setting device of the present invention is generally configured as described above, various configurations can be specifically adopted. The first parameter setting device of the specifically configured parameter setting device of the present invention includes: (1-1) a rotary encoder that outputs a signal corresponding to a rotation position or a rotation amount of a rotating shaft; A parameter setting operation comprising: a knob attached to a shaft by spring bias so as to be movable in a rotation axis direction; and a switch to be switched when the knob is axially moved against the spring bias. child (1-2) from the rotary encoder sets a setting value corresponding to an output signal which varies in accordance with the operation of the rotary encoder, conversion cut is the switch
When it is gills, the setting value set in accordance with the operation of the rotary encoder, the predetermined first predetermined
It is characterized by comprising a set value setting means for returning to the term value.

The second parameter setting device of the specifically configured parameter setting device of the present invention is: (2-1) a rotary encoder that outputs a signal corresponding to the rotation position or the rotation amount of the rotating shaft. And a knob attached to the rotating shaft by being urged by a spring so as to be movable in the direction of the rotating shaft, and a switch to be switched when the knob is moved in the axial direction against the bias of the spring. Parameter setting operator (2-2) Input means for inputting a tone generation instruction signal from outside
Step ( 2-3 ) According to an output signal from the rotary encoder that changes according to the operation of the rotary encoder
Set value setting means (2 4) musical sound generation instruction signal from the outside to said input means for setting the set value is
Generates a musical tone when input, and generates a musical tone to the input means.
In addition to the case where a sound indication signal is input,
When was switched et al, characterized by including a tone to be generated sound generating means the musical tone corresponding to the set value in accordance with the operation of the rotary encoder.

A third parameter setting device of the specifically configured parameter setting device according to the present invention is: (3-1) a rotary encoder that outputs a signal corresponding to the rotation position or the rotation amount of the rotating shaft. And a knob attached to the rotating shaft by being urged by a spring so as to be movable in the direction of the rotating shaft, and a switch to be switched when the knob is moved in the axial direction against the bias of the spring. Parameter setting operator (3-2) Set a character from a rotary encoder according to an output signal that changes according to the operation of the rotary encoder, and switch the switch.
It is provided with a character setting means for switching the character type when it is received.

The above-described parameter setting device of the present invention includes, for example, the following various embodiments. The following also includes aspects corresponding to some specific configurations described above. (1) Turn the knob to adjust its rotation position or rotation amount
Set according setting value, cancel the setting value to the set <br/> by pressing the knob, previously constant was given first
Return to the default. This predetermined initial value
May be different for each parameter and the same parameter
It is not necessary to always have a constant value for the
Set the value of the parameter as shown in the embodiment.
Settings at the time the parameter is selected
Value, that is,
The set value may be used as the initial value. This mode (1) is included in the above-described first parameter setting device of the present invention . (2) When setting a predetermined parameter of a musical tone, the setting of the parameter is changed by rotating the knob, and a tone for the test of the musical tone after the setting is performed by pressing the knob. This mode (2) corresponds to the above-described second parameter setting device of the present invention. (3) alphabetic characters, terms kana characters, etc. identical characters, its rotational position or by rotating the knob
A character is set according to the amount of rotation.
The character type of the specified character (uppercase and lowercase, hiragana and katakana, etc.) is alternately switched. This aspect of ( 3 ) is
This corresponds to the third parameter setting device of the present invention described above .

In each of the above embodiments (1) to ( 3 ), the operation of "pushing" may be replaced by the operation of "pulling". In the parameter setting device of the present invention, the rotary encoder outputs a signal corresponding to the rotation position or the rotation amount of the rotation shaft to which the knob is attached,
Since the switch is configured to be switched when the knob moves in the axial direction against the urging of the spring, one parameter setting device has two functions, a function for setting a parameter and a function as a switch. Function can be achieved. Therefore, for example, the setting value can be changed by rotating the knob, and the setting value can be canceled and returned to the setting value before the change by pressing the knob, so that the operation is easy and the occupied space on the panel is small. It is practical.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a main part showing a parameter setting device according to one embodiment of the present invention, FIG. 2 is a block diagram of an electronic musical instrument using the parameter setting device of this embodiment, and FIG. 3 is a musical instrument of the electronic musical instrument shown in FIG. FIG. 3 is a diagram illustrating a front panel of an operation unit.

The parameter setting device 10 shown in FIG. 1 is mounted on the back side of the front panel 12, and the knob 14 is arranged on the front side of the front panel 12 at a position where the knob 14 is easily rotated. The parameter setting device 10 includes an encoder 20 that outputs a signal corresponding to the rotation position or the rotation amount of the rotation shaft 16.
4 are fitted, and the rotation shaft 16 rotates with the rotation of the knob 14. The knob 14 is located at a normal position (a position where no external force is applied) and at a position 24 indicated by a broken line.
(Position when pressed) is movably mounted by a spring 26 and is urged to a normal position by the spring 26. Further, the parameter setting device 10 is provided with a switch 28 having an arm 30. When the knob 14 comes to the position 24 shown by the broken line, the arm 30 is pushed, and the arm 30 is moved to the position 32 shown by the broken line. Become. When the knob 14 is pressed, the switch 28 closes. When the hand is released, the knob 14 returns to the original position by the force of the spring, and the switch 28 opens. The switch 28 is electrically connected to an internal circuit (not shown) inside the encoder 20 via cables 34 and 36, and a signal (hereinafter, referred to as an “encoding signal”) corresponding to the rotation position or the rotation amount of the knob 24 is output from the encoder 20. ), An on / off signal indicating the position of the arm 30 of the switch 28 is output. Therefore,
The parameter setting device 10 outputs a signal corresponding to the rotation position or rotation amount of the knob 14 and
Each time is pressed, a predetermined on / off signal can be output, and both the original function of setting parameters and the function of a switch are provided.

As is widely known, the rotary encoder 20 detects the rotation of the rotary shaft 16 and outputs a signal corresponding to the rotation position or the rotation amount. And magnetic type. Next, an electronic musical instrument 40 using the above-described parameter setting device 10 will be described with reference to FIG.

In the electronic musical instrument 40 shown in FIG. 2, a tone generator 44 generates a characteristic tone according to the parameters stored in the memory 42. The tone generator 44 controls the tone by using a MIDI or the like. The memory 42 stores parameters such as a tone volume, a tone color, and a reference pitch. The electronic musical instrument 40 includes the above-mentioned memory 42, tone generator 44, and other components such as a musical instrument operation unit 46 and a musical instrument control unit 48 having the parameter setting device 10 (see FIG. 1) shown in FIG. I have.

The musical instrument operation section 46 is operated by a user to change parameters such as volume and tone and their set values. The musical instrument control section 48 includes a CPU, a serial interface, an input / output port, a timer, and the like. The instrument control section 48 monitors a state change of the musical instrument operation section 46, performs processing corresponding to the state change, and a display section described later. 5
A signal indicating the state is output to 0. Also, it reads the data input from the MIDI data receiving connector 66,
In the case of sound data, processing corresponding to data from the MIDI data receiving connector 66 is also performed, such as outputting a signal instructing the tone generator to generate a musical sound.

The display section 50 displays a tone color name, a set value, and the like. The tone generator 44 generates digital musical tone data based on signals output from the musical tone control unit 48 and representing the tone, mute information, volume, pitch information, and the like. In the D / A converter 54, the tone generator 44
Is converted into an analog voltage value.

In the LPF 56, unnecessary harmonic signals outside the audible band are removed. In the amplifier 58, the signal is amplified until the speaker 60 can emit sound. The attenuator 62 is for adjusting the signal level mainly when an output signal is input to an external amplifier or the like.

Next, the front panel of the musical instrument operating section 46 of the electronic musical instrument 40 shown in FIG. 2 will be described with reference to FIG. As shown in FIG. 3, the front panel 64 has an MID
I data receiving connector 66, display unit 50, knob 14,
The parameter switching button 68 and the speaker 60 are arranged in order. The parameters that can be switched by the parameter switching button 68 include, for example, volume, timbre, timbre name, reference pitch, high-frequency tone control, low-frequency tone control, and attenuation level.

The display section 50 has a parameter switching button 6
The current state of the parameter switched in 8 is displayed, and the setting value of this parameter changes by +1 from the current setting value when the knob 14 is rotated to the right, for example.
When the knob is rotated to the left, the value changes by -1, and when the knob 14 is pressed, the changed set value is canceled and returned to the set value before the change. Thus, the electronic musical instrument 40
Then, the adjustment of the parameter set value and the operation of the switch,
Since the operation is performed only by operating the knob 14 of one parameter setting device 10, the operation is easy and practical.

Next, various examples for changing the set values of the parameters of the electronic musical instrument 40 shown in FIG. 2 will be described with reference to FIGS.
This will be described with reference to the flowchart shown in FIG. In a main routine (not shown), a pulse signal output from the parameter setting device 10 is monitored, and each time one pulse signal is detected, the operation of the flow shown in each drawing is started. A pulse signal is output from the rotary encoder 20 every time the knob 14 is rotated by a predetermined minute angle.

FIG. 4 shows that the setting value X of a predetermined parameter is temporarily changed by rotating the knob, and the temporarily changed setting value is canceled by pressing the knob to return to the setting value before the change. , Is a flowchart in a case where the setting value is returned to the previous one being changed by pressing the knob again. FIG. 4A shows the front panel 64 shown in FIG.
5 is a flow started at the time of parameter switching by operating the parameter switching button 68 provided in the process. When this flow is activated, the flag unflag
Is set to "0" as an initial state (step 10).
1). This unflag is canceled by pressing the knob as described below, after changing the parameter,
Thus, the flag is set to “1” when the set value of the parameter is returned to the value before the change, and is set to “0” when the set value of the parameter is not returned to the value before the change. '0' for unflag
Is set, the routine proceeds to step 102. Where X
Is the current value of the parameter newly selected by operating the parameter switching button 68 (see FIG. 3), that is, the set value of the parameter before the change by turning the knob. Also, i is a variable that is incremented or decremented by rotating the knob, and the set value of the parameter is a function F that uses i representing the amount of rotation of the knob as a variable.
Is converted according to In this step 102, a variable i corresponding to the set value X of the selected parameter before the change is obtained. The obtained variable i is stored in a buffer unBuf that temporarily stores the variable i in step 103. In step 104, the type of the selected parameter, its current (pre-change) setting value, the state of the unflag, and the like are displayed.

FIG. 4B is a flowchart which is started when the knob is turned and when the knob is pressed. When the knob is turned clockwise, first in step 105, unflag
Is set to '0' indicating that the parameter setting value has been changed, regardless of whether the previous state of the unflag was '0' or '1'. Next, at step 106, the value i is incremented by "1", and the routine proceeds to step 107, where it is determined whether or not this value i exceeds a predetermined maximum value. If not, go to step 108 if yes, and after the value i is changed to the maximum value, go to step 1
Proceeding to 15, the set value X is determined according to X = F (i) where F (i) is a predetermined function of i, and step 11 is performed.
Proceed to 6 and the set value is reflected in the tone generator.
This is reflected on the display at step 106. At this time, the type of the selected parameter, its set value, and unfla
In accordance with the state of g, whether the set value of the parameter is returned to the value before the change, the state of not being returned, or the like is displayed.

Next, the case where the knob is pressed will be described.
Here, a case where the knob is pushed after rotating the knob as described above, and then the knob is pushed again will be described. When the knob is pressed after the setting value is changed, first, in step 109, the state of the unflag is determined. In this case, since the knob has already been turned,
The state of the flag is set to '0, and therefore the process proceeds to step 110 next. In step 110, unf
lag is set to '1' indicating that the parameter setting value has been returned to the value before the change, and the routine proceeds to step 111, where the value i set by turning the knob (step 10)
6 is stored (saved) in the buffer reBuf, and the value i before the change (see step 103) is read from the unBuf in step 112. Then step 11
The setting value X corresponding to the value i before the change is obtained by way of 5 through 117, reflected on the tone generator, and further reflected on the display.

Thereafter, when the knob is pressed again, step 1
09 and then proceed to step 113 to unflag
Is set to "0" indicating that the set value is the one after the change.
Then, the changed set value saved in reBuf is read.
Thereafter, steps 115 to 117 are performed in the same manner as described above.
, The set value X corresponding to the changed value i read from reBuf is obtained, reflected on the tone generator, and further reflected on the display.

Here, the case where the knob 14 is rotated to the right has been described. However, when the knob 14 is rotated to the left, the value of X is of course decremented. Since the process at this time is obvious from the description of FIG. 4, the illustration and detailed description of the flowchart for the left rotation are omitted here. The same applies to the following description of each drawing. FIG. 5 is a flowchart showing a case where, when a predetermined parameter of a musical tone is set, a parameter is changed by rotating a knob and a tone is changed by pressing the knob to generate a musical tone after the change. is there. As shown in FIG.
When the knob is turned to the right, the value i
Is incremented by "1", and the routine proceeds to step 112, where it is determined whether or not this value i has exceeded a predetermined maximum value. If not, the process proceeds to step 113, and the value i is changed to the maximum value. At step 114, the set value X is determined according to X = F (i). The set value is reflected on the tone generator, and is reflected on the display at step 116. When the knob is pressed here, a test tone is generated in a state after the setting is changed in step 117 shown in FIG. 5B, and the changed set value can be confirmed. Also,
When the depressed knob returns to the original position, the test sound being emitted is muted in step 118 of FIG. 5C. The sounding and silencing here are the same as the sounding and silencing when note-on and note-off are input by a MIDI signal. Therefore, the attack part of the envelope,
When the parameters of the release part are set, the characteristics of the musical tone based on the set parameters can be immediately confirmed.

FIG. 6 is a flowchart in the case where the setting value is changed by rotating the knob, and the polarity of the changed setting value is inverted by pressing the knob.
FIG. 6A, that is, Steps 121 to 126 are performed from Step 111 to Step 1 shown in FIG.
The description is omitted because it is the same as that up to 16. FIG.
When the knob is pressed, as shown in FIG.
At 27, the polarity of the set value X is inverted to -X,
Proceeding to step 128, the set value is reflected on the tone generator, and is reflected on the display at step 129, and the change of the set value ends.

FIG. 7 is a flowchart showing a case where the setting value is changed according to a change function different from each other when the knob is rotated after pressing the knob and when the knob is rotated without pressing the knob. Here, three buffers Bu
f [j] (j = 0, 1, 2) are prepared, and each address i of each buffer has a value G1 (i) = i, G2
^{(I) = i 2/2} , G3 (i) = i 3/3 are stored.

First, FIG. 7B will be described. When the knob is depressed, the value j is first incremented in step 137, and it is determined in step 138 whether or not j is exceeded. If j is less than or equal to 2, if j> 2, j is changed to j = 0 in step 139 and then step 14
Proceeding to 0, Buf [j] is designated as the function F (i) of i. That is, each time the knob is pressed once, the function F of i
G1 (i), G2 (i), and G3 (i) are cyclically designated as (i).

FIG. 7 (a) is the same as the flow of FIG. 5 (a) and will not be described in detail. In step 134, the function F designated as described above is used.
According to (i), ie, three buffers Buj [j] (j
= 1, 2, 3), the value stored in the address i is read out, and the value of the set value X is thereby set.

FIG. 8 shows that when the alphabet character is set, the setting character is changed by turning the knob.
It is a flowchart in the case where the changed character is alternately switched to uppercase and lowercase every time the knob is pressed.
This alphabet character setting is used when setting a tone color name or the like. FIG. 8A, that is, Steps 141 to 146 correspond to Step 1 shown in FIG.
Since it is the same as 11 to step 116, the description is omitted. Here, F (0) = “A”, F (1) = “B”, F (2) =
“C”,... F (25) = “Z”, F (26) = “a”,
Is stored. When the knob is pressed, FIG.
As shown in (b), if an uppercase letter (lowercase letter) has been set before, in step 147, it is switched to a lowercase letter (uppercase letter). When switching between uppercase and lowercase, a flag indicating which character is currently set is prepared, and when the knob is pressed and the value of i changes from "25" to "26", or Conversely, the flag is inverted each time it changes, and the value of i is set to "26" when a new lowercase letter is set.
When a new capital letter is set, the value of i is calculated to be reduced by "26". Here, the example of setting the alphabet has been described, but the character to be set is not limited to the alphabet. For example, each time the character is pressed, the character may be alternately switched between katakana and hiragana.

FIG. 9 is a flowchart showing a case where a predetermined parameter of a musical tone is set, the knob is rotated to change the parameter setting, and the volume is muted by pressing the knob. FIG. 9 (a)
Steps 151 to 156 of FIG.
This is the same as steps 111 to 116 shown in FIG. Here, when the knob is pressed, as shown in FIG.
When the volume is muted at and the knob returns to the original position, the volume returns to the original at step 158 as shown in FIG. 9C. This configuration is suitable for breaking (temporarily silencing) a long-released musical tone or the like. In this embodiment, the volume is lowered by pressing the knob, and the volume is restored by releasing the knob. Therefore, if there is a musical tone being generated by the MIDI data, the musical tone that has been muted is not reproduced. When the knob is released, it will be sounded again, but when the knob is pressed, the tone envelope being generated is forcibly and rapidly attenuated, and when the knob is released, no processing is performed. Is also good. In this case, the tone that has been muted once will not be reproduced again even if the knob is released.

FIGS. 10 and 11 show that, when a predetermined parameter of a musical tone is set, the knob is rotated to change the setting of a parameter (for example, pitch), and when the knob is pressed, the setting is changed by turning the knob. FIG. 9 is a flowchart in a case where a setting value of another parameter (here, an attenuator setting value) different from a parameter to be performed is switched. Steps 161 to 166 shown in FIG. 10 correspond to step 111 shown in FIG.
Since the processing is the same as that from step to step 116, the description is omitted, but here, for example, the pitch is set or changed as a parameter. As shown in FIG. 11, when the knob is pressed, the value j is incremented by "1" in step 167, and the process proceeds to step 168, where it is determined whether or not this value j exceeds 2. If it does not exceed it,
If it exceeds, the process proceeds to step 169, where the value j is changed to j = 0. At step 170, the magnitude of the value j is compared with "1". When j is larger than "1" (that is, when j = 2 in the present embodiment), the process proceeds to step 171 and the attenuator is switched to 0 dB. If j = 1, the process proceeds to step 172, where the attenuator is switched to -20 dB. When j is smaller than "1" (that is, when j = 0 in this embodiment), the process proceeds to step 173, and the attenuator is switched to -40 dB. Thus, the switching of the attenuator setting is completed. This configuration,
When a plurality of sound sources are used, it is suitable for adjusting the output level of each sound source.

In addition to the embodiments described above, when the setting value of the parameter is changed by rotating the knob, "10" is set every predetermined minute rotation of the knob so that the setting value can be largely changed. The set value may be changed by "1" each time the knob is pressed so that the set value can be changed and a small change is possible. Further, in the above description, the operation of simply pressing the knob is intended. However, the time interval for pressing the knob may be measured to determine whether the knob has been pressed twice in a short time. In this case, when the setting value of the parameter is changed by rotating the knob, the setting value is changed by "10" at every predetermined minute rotation of the knob, and at least a predetermined time has elapsed since the knob was last pressed. Each time it is pressed, the set value is set to "1" each time
When the knob is pressed twice within a predetermined time, the set value may be decreased by "1" each time.

In each of the embodiments described above, the knob is depressed. However, it is needless to say that the knob may be pulled.

[0036]

As described above, the parameter setting device of the present invention outputs a signal corresponding to the rotational position or the amount of rotation of the rotary shaft to which the knob is attached, and the knob opposes the bias of the spring. Since the switch is configured to be switched when it is moved in the axial direction, one parameter setting device can achieve two functions of an original function of setting a parameter and a function as a switch. . Therefore, for example, the setting value can be changed by rotating the knob, and the setting value can be canceled and returned to the setting value before the change by pressing the knob, so that the operation is easy and the occupied space on the panel is small. Already practical.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing a parameter setting device according to an embodiment of the present invention.

FIG. 2 is a block diagram of an electronic musical instrument using the parameter setting device shown in FIG.

FIG. 3 is a diagram showing a front panel of a musical instrument operation unit of the electronic musical instrument shown in FIG. 2;

FIG. 4 is a flowchart in a case where the setting value is temporarily changed by rotating a knob, and by pressing the knob, the temporarily changed setting value is canceled and returned to the setting value before the change. is there.

FIG. 5 is a flowchart in a case where a parameter is changed by rotating a knob when a predetermined parameter of a musical tone is set, and a tone after the change is generated by pressing the knob; is there.

FIG. 6 is a flowchart showing a case where the setting value is changed by rotating a knob and the polarity of the changed setting value is inverted by pressing the knob.

FIG. 7 is a flowchart of a case where the setting value is changed according to a change function different from each other when the knob is rotated after pressing the knob and when the knob is rotated without pressing the knob.

FIG. 8: When setting alphabetic characters,
It is a flowchart in the case where the setting character is changed by rotating the knob, and the changed character is alternately switched to uppercase and lowercase every time the knob is pressed.

FIG. 9 is a flowchart showing a case where a parameter is changed by rotating a knob and a volume is muted by pressing the knob when a predetermined parameter of a musical tone is set.

FIG. 10 is a diagram showing another example of setting a parameter of a musical tone by changing a parameter (for example, pitch) by rotating a knob and pressing the knob to change the setting by rotating the knob. 7 is a flowchart in the case where the knob is rotated right in the flowchart in a case where the setting value of the parameter (attenuator setting value) is switched.

FIG. 11 is a flowchart when the knob is pressed in the same case as in FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Parameter setting device 12 Front panel 14 Knob 16 Rotation axis 20 Encoder 22 Leg 24 Position when knob is pressed 26 Spring 28 Switch 30 Arm 32 Position of arm pressed by knob 34 Cable

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical indication H01H 25/06 H01H 25/06 B (56) References JP-A-60-43732 (JP, A) JP-A-3-110598 (JP, A) JP-A 60-145496 (JP, U) JP-A 55-144394 (JP, U) JP-A 58-195937 (JP, U) JP-A 63-98595 (JP, U)

Claims (3)

(57) [Claims] A rotary encoder that outputs a signal corresponding to a rotation position or a rotation amount of a rotation shaft; a knob attached to the rotation shaft so as to be movable in a direction of the rotation shaft by a spring; A parameter setting operator having a switch that is switched when the knob is moved in the axial direction against the bias of the spring, and an output from the rotary encoder that changes in accordance with the operation of the rotary encoder it sets the set value corresponding to the signal,
When the switch is switched et al, the values set in accordance with the operation of the rotary encoder, rough
A parameter setting device comprising a set value setting unit for returning to a predetermined initial value determined in advance . 2. A rotary encoder for outputting a signal corresponding to a rotation position or a rotation amount of a rotation shaft, a knob attached to the rotation shaft so as to be movable in a direction of the rotation shaft by a spring, and A switch for switching when the knob is moved in the axial direction against the bias of the spring; a parameter setting operator; an input means for externally inputting a musical sound generation instruction signal; and a rotary encoder. set value setting means for setting a set value corresponding to an output signal which varies in response to the operation of the rotary encoder, and outside said input means
Generates a musical tone when a musical tone generation instruction signal is input from the section
And, unless the tone sound generation instruction signal is input to the input means
Also, the when the switch is switched et al, parameter setting apparatus characterized by comprising a tone to be generated sound generating means the musical tone corresponding to the set value in accordance with the operation of the rotary encoder. 3. A rotary encoder for outputting a signal corresponding to a rotation position or a rotation amount of a rotation shaft, a knob attached to the rotation shaft by a spring so as to be movable in a direction of the rotation shaft, and A parameter setting operator having a switch that is switched when the knob is moved in the axial direction against the bias of the spring, and an output from the rotary encoder that changes in accordance with the operation of the rotary encoder it sets the character corresponding to the signal, before
When serial switch is switched et al, parameter setting apparatus characterized by having a character setting means for switching a character type.