JPH0575795U - Parameter setting device for electronic musical instruments - Google Patents

Abstract

(57) [Summary] [Object] To provide a parameter setting device capable of performing fine adjustment and coarse adjustment of set values with one unit, which functions as two units. A knob attached to a rotary shaft so as to be movable between a first position and a second position in the axial direction of the rotary shaft,
A rotary encoder that outputs a signal according to the rotation position or amount of rotation of the knob, and a meaning that signals have different meanings depending on whether the knob is in the first position or the second position And means.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

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

[0002]

[Prior Art]

 2. Description of the Related Art A parameter setting device that rotates a knob attached to a rotary shaft and outputs a signal according to a rotation position and a rotation amount of the knob has been conventionally known. When this parameter setting device is used, for example, to adjust the volume of an electronic musical instrument, by rotating the knob, a signal corresponding to the rotation position and amount of rotation of the knob is output and corresponds to that signal. The volume will change by minutes.

[0003]

[Problems to be solved by the device]

 By the way, for example, when it is desired to change the volume, there are times when it is desired to slightly change the volume and there are times when it is desired to make a large change. In this case, if the volume change with respect to the output signal is determined according to the predetermined rotation amount of the knob so as to be suitable for the fine adjustment of the volume, the knob must be rotated many times to change the volume significantly. It is necessary, and the operability becomes poor. On the other hand, if the volume change with respect to the amount of rotation is determined so as to be suitable for making a large change in the volume, it is necessary to slightly rotate the volume when changing the volume slightly, and in this case also the operability deteriorates.

As described above, in the conventional parameter setting device, only one value to be changed according to the predetermined rotation position and the rotation amount is set in advance, so that, for example, one fine adjustment and one coarse adjustment are performed. When using the parameter setting device, the operability of either one of the adjustments is poor. Further, although it is possible to prepare two parameter setting devices for fine adjustment and rough adjustment, there is a problem that the occupied space is expanded and the cost is increased.

In view of the above circumstances, it is an object of the present invention to provide a parameter setting device for an electronic musical instrument, which can perform the functions of two instruments by one instrument.

[0006]

[Means for Solving the Problems]

 The parameter setting device for an electronic musical instrument of the present invention for achieving the above object is (1) attached to a rotary shaft so as to be movable between a first position and a second position in the axial direction of the rotary shaft. Knob (2) rotary encoder that outputs a signal according to the rotation position or amount of rotation of the knob (3) depending on whether the knob is in the first position or the second position, It is characterized in that it is provided with means for giving different meanings to the numbers.

The above-described parameter setting device of the present invention includes various modes as described below, for example. (1) When the knob is rotated while being pressed, the amount of change in the set value is larger than when the knob is rotated without being pressed. (2) The amount of change in the set value with respect to the amount of rotation is smaller when rotating while pressing the knob. (3) When the knob is rotated, the set value is selected from a large number of values that are stored in advance. Currently, the set value is selected depending on whether the knob is pressed and rotated or not. The address jumps from the memory address where the set value is stored to the memory address where the next selected set value is stored are different from each other. In this case, the large number of values may be fixedly stored in advance, and the stored values may be rewritable. (4) The set value changes according to different change functions between the case where the knob is rotated while being pressed and the case where the knob is rotated without being pressed. (5) When the set value spreads from the plus side to the minus side, the set value changes with opposite polarities when the knob is rotated while being pressed and when it is rotated without being pressed. .. (6) With respect to the same characters such as alphabetic characters and kana characters, the character types (uppercase and lowercase, hiragana and katakana, etc.) differ depending on whether the knob is rotated when it is rotated or not. (7) The setting value changes by rotating while pressing the knob. The setting value does not change even if the knob is rotated without pressing it. That is, in this case, the signal that is generated when the knob is rotated without being pushed is given the meaning of "do nothing". (8) Two parameters that are different from each other, such as the X coordinate and the Y coordinate, are set depending on whether the knob is rotated while being pressed or rotated without being pressed. (9) The parameter to be set is selected by rotating the knob without pressing it, and the setting value of the selected parameter is changed by rotating the knob while pressing it. (10) When setting a certain range, the beginning of the range (start point) is indicated by rotating the knob without pressing it, and the end of the range (end point) by rotating while pressing the knob. Is instructed. (11) In the case of setting a predetermined parameter of a musical sound, the above-mentioned predetermined parameter is similarly changed by rotating the knob as it is without pressing it or by rotating it while pushing the knob, but without pressing the knob. When the knob is turned to, the setting is simply changed, and when the knob is pressed and rotated, the setting is changed and the changed tone is sounded.

In each of the above aspects (1) to (11), the operation of “pushing” may be replaced with the operation of “pulling”.

[0009]

[Action]

 In the parameter setting device of the electronic musical instrument of the present invention, the meaning of the signal output according to the rotating position or the rotating amount of the knob when the knob is at the first position and when the knob is at the second position. Since the parameters are different from each other, one parameter setting device functions as two parameter setting devices. Therefore, for example, the fine adjustment of the parameter setting value can be performed at the first position, and the rough adjustment of the parameter setting value can be performed at the second position, so that the desired setting value can be easily obtained. Becomes

[0010]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view of a main part showing a parameter setting device of an embodiment of the present invention, FIG. 2 is a block diagram of an electronic musical instrument using the parameter setting device of the present embodiment, and FIG. 3 is an electronic musical instrument shown in FIG. It is a figure which shows the surface panel of the musical instrument operation part.

The parameter setting device 10 shown in FIG. 1 is attached to the back side of the front panel 12, and a knob 14 is arranged on the front side of the front panel 12 at a position where the knob 14 can be easily rotated. The parameter setting device 10 is provided with an encoder 20 that outputs a signal according to a rotation position or a rotation amount of the rotary shaft 16, and a leg portion 22 of the knob 14 is fitted to the rotary shaft 16 so that the knob 14 can be rotated. The rotating shaft 16 rotates with the rotation. Further, the knob 14 is movably attached by a spring 26 between a normal position (position where external force is not applied) and a position 24 (position when pushed) shown by a broken line. Is biased to the position. Further, the parameter setting device 10 is provided with a switch 28 having an arm 30, and when the knob 14 comes to the position 24 shown by the broken line, the arm 30 is pushed and the arm 30 is shown by the broken line. Position 32 is reached. The switch 28 is electrically connected to an internal circuit (not shown) inside the encoder 20 via two cables 34 and 36, and a signal from the encoder 20 according to the rotation position or rotation amount of the knob 24 (hereinafter Is called an "encode signal"), and an on / off signal indicating the position of the arm 30 of the switch 28 is output. Therefore, even if the rotation position or the rotation amount of the knob 14 is the same, it can be distinguished whether the knob 14 is rotated without being pushed or rotated by pushing, and the encode signal can be adjusted, for example, with a rough adjustment and a fine adjustment of the volume. This means that the one parameter setting device 10 functions equivalently to the two parameter setting devices when performing the rough adjustment and the fine adjustment of the sound volume.

As is widely known, the rotary encoder 20 detects the rotation of the rotary shaft 16 and outputs a signal according to the rotation position or the rotation amount. Type, magnetic type, etc. Next, with reference to FIG. 2, an electronic musical instrument 40 using the above-described parameter setting device 10 will be described.

In the electronic musical instrument 40 shown in FIG. 2, the tone generator 44 generates musical tones having characteristics according to the parameters stored in the memory 42, and the tone generator 44 controls the musical tones by MIDI. The memory 42 stores parameters such as tone volume, tone color, and reference pitch. The electronic musical instrument 40 is composed of a memory 42, a tone generator 44, and other components such as a musical instrument operating unit 46 and a musical instrument control unit 48 having the parameter setting device 10 (see FIG. 1) shown in FIG. ing.

The musical instrument operating section 46 is operated by a user to change parameters such as volume and tone and their setting values. The musical instrument control unit 48 is provided with a CPU, a serial interface, an input / output port, a timer, etc., monitors the state transition of the musical instrument operating unit 46, performs processing corresponding to this state transition, and displays the display unit described later. A signal indicating the status is output to 50. In addition, the data input from the MIDI data receiving connector 66 is read, and in the case of sound output data, a signal instructing the tone generator to generate a musical tone is output. Done.

On the display unit 50, a tone color name, a set value, etc. are displayed. In the tone generator 44, digital tone data is generated based on the signals output from the tone control section 48, which represent the pronunciation, muffling information, volume, pitch information and the like. The D / A converter 54 converts the digital musical tone data generated by the tone generator 44 into an analog voltage value.

The LPF 56 removes unnecessary harmonic signals outside the audible band. The amplifier 58 amplifies the signal until the speaker 60 is ready to emit sound. The attenuator 62 is mainly for matching when inputting an output signal to an external amplifier or the like.

Next, the surface 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, a MIDI data receiving connector 66, a display unit 50, a knob 14, a parameter switching button 68, and a speaker 60 are sequentially arranged on the front panel 64. 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 unit 50 displays the current state of the parameter switched by the parameter switch button 68. The set value of this parameter is the current setting when the knob 14 is rotated to the right without being pressed. The value changes in increments of +1; when it is rotated to the left, it changes by -1; when it is rotated to the right while holding down knob 14, it changes by +1 0 from the current set value, and it is rotated to the left. It is configured to change by -10 at a time. As described above, in the electronic musical instrument 40, the fine adjustment and the coarse adjustment of the parameter setting value are performed by rotating the knob 14 of the one parameter setting device 10. Therefore, when the value is largely changed, the knob is set many times. Also, there is no need to bother you to rotate.

Next, various examples of changing the set values of the parameters of the electronic musical instrument 40 shown in FIG. 2 will be described with reference to the flowcharts shown in FIGS. 4 to 15. In a main routine (not shown), the pulse signal output from the parameter setting device 10 is monitored, and the operation of the flow shown in each figure is started every time one pulse signal is detected. Here, it is assumed that the rotary encoder 20 outputs a pulse signal each time the knob 14 is rotated by a predetermined minute angle.

FIG. 4 shows that when the knob is rotated without being pressed, the setting value X of the predetermined parameter is finely adjusted, and when the knob is rotated while being rotated, the setting value X is roughly adjusted. It is a flow chart at the time of comprising. When the knob is rotated to the right by a predetermined amount, and thereby one pulse signal is generated, this routine is executed once, and at step 101, it is judged whether or not the knob is pushed. When the knob is pushed, the routine proceeds to step 102, where the set value X is changed by "10". When the knob is not pushed, the routine proceeds to step 103, where the set value X is changed by "1". Next, the routine proceeds to step 104, where it is judged if the set value X has exceeded a predetermined maximum value. When it exceeds, the routine proceeds to step 105, where the set value X is set to a predetermined maximum value, and the routine proceeds to step 106 where the value is reflected in the tone generator. If the set value X does not exceed the maximum value, the process proceeds directly to step 106, and the set value is reflected in the tone generator. In step 107, the changed set value is reflected on the display, and the change of the set value is completed. If the parameter is, for example, the volume, it is possible to easily obtain the desired volume by combining fine adjustment and coarse adjustment by these processes. Although the case where the knob 14 is rotated to the right has been described here, it is a matter of course that the value of X is decremented by "10" or "1" when rotated to the left. Since the processing at this time is obvious from the description of FIG. 4, illustration and detailed description of the flow chart for left rotation are omitted here. The same applies to the following description of each drawing.

FIG. 5 shows a configuration in which the setting value X of a predetermined parameter is finely adjusted when the knob is pressed and rotated, and the coarse adjustment of the setting value X is performed when the knob is rotated without being pressed. It is a flowchart of. First, when the knob is rotated to the right, it is determined in step 111 whether the knob is pushed. When the knob is pushed, the routine proceeds to step 112, where the set value X is changed by "1". If the knob is not pushed, the routine proceeds to step 113, where the set value X is changed by "10". Next, the routine proceeds to step 114, where it is judged if the set value X has exceeded a predetermined maximum value. When it exceeds, the routine proceeds to step 115, where the set value X is set to a predetermined maximum value, and the routine proceeds to step 116 where the value is reflected in the tone generator. If the set value X 1 does not exceed the maximum value, the process proceeds directly to step 116 and the set value is reflected in the tone generator. In step 117, the changed set value is reflected on the display, and the change of the set value is completed.

FIG. 6 is a flowchart when the set value is selected from a large number of values stored in advance. The stored value may be fixedly stored in advance or may be rewritable by the user as needed. Here, the values 1, 5, 7, 10, 20, 30, ... Are stored in advance in the buffer Buf (i) (i = 1, 2, 3, ...). Here, first, when the knob is rotated to the right, it is determined in step 121 whether the knob is pressed. When the knob is pushed, the routine proceeds to step 122, where the value i is changed to "10". When the knob is not pushed, the routine proceeds to step 123, where the value i is changed by "1". Next, the routine proceeds to step 124, where it is judged if this value i exceeds the value stored in the memory in advance. If it exceeds, the process proceeds to step 125 and the value i is changed to the maximum value. When the value i does not exceed the maximum value, the process directly proceeds to step 126. In step 126, the value of Buf (i) with i as the address is selected as the set value. At step 127, the set value X is reflected on the tone generator. In step 128, the changed set value is reflected on the display, and the change of the set value is completed.

FIG. 7 is a flow chart when the set value X is configured to change according to different change functions when the knob is rotated while being pressed and when the knob is rotated without being pressed. Here, the change function when the knob is pressed change function when F (i) = i, not depressed is G (i) = i 2/ 2. When the knob is rotated to the right, the routine proceeds to step 141, where the value i is incremented by "1", and it is judged at step 142 whether the knob is pushed or not. When the knob is pushed, the routine proceeds to step 143, where the set value X is changed according to X = F (i). Next, at step 144, it is judged if the set value X has exceeded a predetermined maximum value. If it exceeds, the process proceeds to step 145, and the set values X and i are changed to the respective maximum values and reflected in the tone generator at step 146. It is displayed on the generator and displayed in step 147 to complete the change of the set value. When the knob is not pushed, the routine proceeds to step 148, where the set value X is changed according to X = G (i). Next, in step 149, it is determined whether the set value X has exceeded a predetermined maximum value. If it exceeds, the process proceeds to step 150, and the set values X and i are changed to the respective maximum values and reflected in the tone generator at step 146. If not exceeded, the process proceeds to step 146 and the set value X is changed. Is reflected on the tone generator and displayed in step 147, and the change of the set value X is completed.

FIG. 8 is a flow chart when the polarity of the change amount i is changed when the knob is pushed and when it is not pushed. When the knob is pressed, it is "-", and when not pressed, it is "+". When the knob is rotated to the right, i is incremented by "1" in step 151, and it is determined in step 152 whether the knob is pressed. When the knob is pushed, the routine proceeds to step 153, where the set value X is X = -i. Next, in step 154, it is determined whether the set value X is smaller than a predetermined minimum value. When it is smaller, the process proceeds to step 155, the set value X is changed to the minimum value, and when i is changed to the minimum value −X, the process proceeds to step 156. When it is larger than the minimum value, the process proceeds to step 156 as it is, and the set value is changed. Is reflected in the tone generator and displayed in step 157 to complete the change of the set value. On the other hand, when the knob is not pushed, the routine proceeds to step 158, where the set value X is X = + i. Next, in step 159, it is determined whether or not the set value X has exceeded a predetermined maximum value. If it exceeds, the process proceeds to step 160, the set value X is changed to the maximum value, and i is changed to the maximum value X, and the process proceeds to step 156. Is reflected on the tone generator and displayed in step 157, and the change of the set value is completed.

FIG. 9 is a flowchart when the character parameters are set such that lowercase letters are set when the knob is not pressed and uppercase letters are set when the knob is pressed. First, when the knob is rotated to the right, the character is changed in step 171, and it is determined in step 172 whether or not the knob is pressed. When the knob is pressed, the process proceeds to step 173 and the set character is set to "capital letter". If the knob is not pressed, the process proceeds to step 174, and the setting character is set to "lowercase". Next, in step 175, it is determined whether the set number of characters exceeds the maximum number of characters. If the number of characters exceeds the limit, the process proceeds to step 176, and the set number of characters is set to the maximum number of characters. When the number of set characters does not exceed the maximum number of characters, the process proceeds to step 177 and the set character is reflected in the tone generator. In step 178, the changed setting character is reflected on the display, and the changing of the setting character is completed. Note that, here, the uppercase letters are set when the uppercase letters are not pushed when they are pushed and turned, but the lowercase letters may be set. The characters to be set are not limited to alphabets, and for example, hiragana can be set when the katakana is not pressed when the button is pressed and turned.

FIG. 10 shows a flow chart when the set value does not change even if the knob is rotated without being pushed, and the set value is changed only when the knob is rotated while being pushed. Is. First, it is determined in step 181 whether the knob is rotated to the right and the knob is pushed. When the knob is pushed, the routine proceeds to step 182, where the set value X is incremented by 1. In step 183, it is determined whether or not the set value X has exceeded the maximum value, and when it exceeds, the predetermined maximum value is set as the set value X in step 184. In step 185, the set value X is reflected in the tone generator, and in step 186, it is displayed and the change of the set value is completed. When the knob is not pressed, rotating the knob does not change the set value. As in this process, it is possible to use the parameter setting device to prevent erroneous operation by preventing the setting value from being changed without pressing the knob.

FIG. 11 shows a configuration in which different parameters (for example, x and y coordinates) are changed when the knob is rotated without being pressed and when the knob is rotated while being pressed. It is a flowchart in the case of doing. The change function of x when the knob is pressed is x = F (i), and the change function of y when the knob is not pressed is y = G (i). When the knob is rotated to the right, the process proceeds to step 191, the change amount i is incremented by "1", and it is determined in step 192 whether the knob is pressed. When the knob is pushed, the routine proceeds to step 193, where the set value x is changed according to x = F (i). Next, in step 194, it is determined whether the set value x has exceeded a predetermined maximum value. If it exceeds, the process proceeds to step 195, and the set values x and i are changed to the respective maximum values and reflected in the tone generator at step 196. If not, the process proceeds to step 196 as it is and the set value The change is reflected in the generator and displayed in step 197 to complete the change of the set value. When the knob is not pushed, the routine proceeds to step 198, where the set value y is changed according to y 2 = G (i). Next, in step 199, it is determined whether the set value y exceeds a predetermined maximum value. If it exceeds, the process proceeds to step 200 and the set values y and i are changed to the respective maximum values and reflected in the ton generator at step 196. If not exceeded, the process proceeds to step 196 as it is, and the setting is made. The value is reflected in the tone generator and displayed in step 197 to end the change of the set value. By these processes, the setting values of the two parameters are changed by one rotary encoder.

FIG. 12 is a flowchart of a case where a parameter is selected when the knob is rotated without being pushed, and the set value of the selected parameter is changed when the knob is rotated while being pushed. Is. Here, the number given to the parameter is denoted by j, the setting value to be set as each parameter j is denoted by X [j], the memory address is denoted by i, and the value stored in advance at the memory address i is denoted by F [i]. ..

When the knob is rotated to the right, it is first determined in step 211 whether the knob is pushed. If the knob has not been pressed, the routine proceeds to step 212, where the parameter number j is incremented so that a different parameter is selected. In step 213, it is determined whether or not j exceeds a predetermined maximum value. If it exceeds, the parameter number j is changed to the maximum value in step 214, and then the selected number j is changed in step 215. The parameters of are reflected in the display.

On the other hand, if it is determined in step 211 that the knob is pressed, the process proceeds to step 216, the memory address i is incremented by 1, and then the memory is stored in the incremented address i in step 217. The stored value F (i) is read out, and this value F (i) is set as the set value X [j] of the parameter j currently selected. In step 218, it is determined whether or not the set value X [j] exceeds the maximum value, and if it exceeds the maximum value, the address i and the set value X [j] are rewritten to the respective maximum values in step 219. The process proceeds to step 220, where the set value X [j] of the parameter j is reflected on the tone generator, and is reflected on the display at step 215.

In FIG. 13, the head (L1) of the parameter setting range is set when rotating without pressing the knob, and the end (L2) of the parameter setting range is set when rotating while pressing the knob. It is a flowchart in the case. Here, the parameter setting range is, for example, the beginning and the end of a cutout waveform when a waveform in a desired range is cut out from a plurality of continuous tone waveforms. When the knob is rotated to the right, it is determined in step 231 whether the knob is pushed. When the knob is not pushed, the routine proceeds to step 236, where the leading value L1 is incremented by "1". Next, the routine proceeds to step 237, where it is determined whether or not the leading value L1 exceeds a predetermined maximum value. If it exceeds, the process proceeds to step 238, and the set leading value L1 is changed to the maximum value. Further, when the leading value L1 is set, the ending value L2 is set to the same value as the leading value L1 in step 239 so that the starting value L1 does not exceed the ending value L2. Thereafter, the leading value L1 and the trailing value L2 that is the same value as the leading value L1 are displayed in step 235. When it is determined in step 231 that the knob is pressed, the process proceeds to step 232, and the end value L2 is incremented by "1". Next, the routine proceeds to step 233, where it is determined whether or not the terminal value L2 exceeds a predetermined maximum value. If it exceeds, the process proceeds to step 234, the set end value L2 is changed to the maximum value, and the maximum value is displayed in step 235. If it has not exceeded, it proceeds to step 235 and is displayed.

In FIG. 14, when the knob is rotated without being pushed, only the set value is changed, and when the knob is rotated while being pushed, the set value is changed and the pronunciation for the test is performed with the changed set value. It is a flowchart when it is configured as described above. When the knob is rotated to the right, the value i is incremented by "1" at step 241, and the routine proceeds to step 242, where it is determined whether the value i has exceeded a predetermined maximum value. If it does not exceed, it proceeds as it is, and if it exceeds, the routine proceeds to step 243, where after the value i is changed to the maximum value, the set value X is determined according to X = F (i) at step 244, and the routine proceeds to step 245. The set value is reflected in the tone generator, and is reflected in the display in step 246. Next, in step 247, it is determined whether or not the knob is pressed. When the knob is not pressed, the process of changing the set value is completed, and when the knob is pressed, the test sound is output after the setting has been changed.

In each of the embodiments described above, the knob is pushed, but it goes without saying that the knob may be pulled.

[0033]

[Effect of the device]

 As described above, according to the parameter setting device of the present invention, depending on whether the knob is in the first position or the second position, the signal output depending on the rotation position or the rotation amount of the knob is changed. Since the meanings are different from each other, one parameter setting device functions as two units. Therefore, for example, it is possible to perform fine adjustment of the parameter setting value at the first position and coarse adjustment of the setting value of this parameter at the second position. Will be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing a parameter setting device of 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 operating section of the electronic musical instrument shown in FIG.

FIG. 4 shows a configuration in which a setting value of a predetermined parameter is finely adjusted when the knob is rotated without being pressed, and a rough adjustment of the setting value is performed when the knob is rotated while being pressed. It is a flowchart.

FIG. 5 is a flowchart of a configuration in which a setting value of a predetermined parameter is finely adjusted when a knob is pressed and rotated, and a rough adjustment of the setting value is performed when the knob is rotated without being pressed. is there.

FIG. 6 is a flowchart when the setting value is selected from a large number of values stored in advance.

FIG. 7 is a flowchart when the set value X is configured to change according to different change functions when the knob is rotated while being pressed and when the knob is rotated without being pressed.

FIG. 8 shows when the knob is pushed and when it is not pushed.
It is a flow chart when it is constituted so that the polarity of the amount of change may change.

FIG. 9 is a flowchart when the character parameter is set such that a lowercase character is set when the knob is not pressed and an uppercase character is set when the knob is pressed.

FIG. 10 is a flow chart when the set value is not changed even if the knob is rotated without being pushed, and the set value is changed only when the knob is rotated while being pushed.

FIG. 11 is a flowchart of a case in which different parameters are changed when the knob is rotated without being pushed and when the knob is rotated while being pushed.

FIG. 12 is a flowchart in a case where a parameter is selected when the knob is rotated without being pushed, and a setting value of the selected parameter is changed when the knob is rotated while being pushed.

FIG. 13 is a flowchart of a case in which the head of the parameter setting range is set when the knob is rotated without being pushed, and the end of the parameter setting range is set when the knob is rotated while being pushed.

FIG. 14 is configured such that when the knob is rotated without being pressed, only the set value is changed, and when the knob is rotated while being rotated, the set value is changed and the test sound is generated with the changed set value. It is a flowchart in the case of doing.

[Explanation of symbols]

 10 Parameter Setting Device 12 Surface 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, 36 Cable

Claims (1)

[Scope of utility model registration request] 1. A knob mounted on a rotary shaft so as to be movable between a first position and a second position in the axial direction of the rotary shaft, and a signal corresponding to a rotary position or a rotary amount of the knob. A rotary encoder for outputting the signal, and a meaning adding means for giving different meanings to the signal depending on whether the knob is in the first position or the second position. Parameter setting device for electronic musical instruments.