JP4290064B2 - Electronic musical instrument control device - Google Patents

Description

  The present invention relates to an electronic musical instrument control device that controls the value of a musical tone parameter in accordance with the operation of an electronic musical instrument operator.

Conventionally, when the pedal of an electronic musical instrument is depressed and the pitch or volume of the musical tone is controlled according to the position of the displacement, the pedal is pushed back by the spring of the pedal, or the pedal is released from the foot for the next musical tone. If they are separated, there is a problem that noise is generated due to a sudden change in the pitch and volume of the musical sound being sounded. In order to solve this problem, for example, in the invention disclosed in Japanese Patent Laid-Open No. 2001-1000074 (Patent Document 1), when the pedal is operated in a predetermined direction, the parameter value is changed. When operated in the direction opposite to the direction, control is performed so that the parameter value is not changed.
JP 2001-1000074 A

  However, in the invention disclosed in the above publication, when a desired parameter value is set to a value larger than the current parameter value, the pedal can be simply depressed, but the smaller value is set to the current value. When trying to do so, there is a problem that the pedal has to be returned once and then stepped on again, resulting in poor operability.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electronic musical instrument control apparatus in which parameter values can be appropriately set by an operator.

  To achieve this object, an electronic musical instrument control device according to claim 1 is provided with an operation element that can be operated continuously to a predetermined position, and an operation position detection unit that detects an operation position operated by the operation element. Control means for setting a parameter value based on the operation position detected by the operation position detection means, wherein the control means has a parameter value corresponding to the operation position detected by the operation position detection means. If the current parameter value is larger than the current parameter value, the parameter value is increased at the first change speed, and the parameter value corresponding to the operation position detected by the operation position detecting means is greater than the current parameter value. When the value is smaller, the parameter value is decreased at a second change rate different from the first change rate.

  According to the control apparatus for an electronic musical instrument according to claim 1, when the operation element is operated to change the current parameter value, the parameter corresponding to the operation position of the operation element is larger than the current parameter value. When the value corresponding to the operation position of the operator is smaller than the current parameter value, the parameter value is changed at the second change speed.

The control device for an electronic musical instrument according to claim 2 comprises an operation element that can be operated continuously in a predetermined direction or the opposite direction, an operation direction detection means that detects an operation direction in which the operation element is operated, and an operation direction detection thereof. Control means for setting the value of the parameter based on the operation direction detected by the means, and the control means, when the operation direction detected by the operation direction detection means is a predetermined direction, When the value is increased at the first change speed and the operation direction detected by the operation direction detecting means is the opposite direction, the parameter value is increased at a second change speed different from the first change speed. It will decrease .

  In claims 1 and 2, the fact that the first change speed and the second change speed are different means that the absolute values are different regardless of the direction of change.

According to the control device for an electronic musical instrument according to claim 2, when the operation element is operated to change the current parameter value, the parameter value is set when the operation direction in which the operation element is operated is a predetermined direction. Is increased at the first change speed, and the parameter value is decreased at the second change speed when the operation direction in which the operating element is operated is opposite to the predetermined direction.

  The electronic musical instrument control apparatus according to claim 3 is the electronic musical instrument control apparatus according to claim 1 or 2, wherein the first change speed and / or the second change speed is arbitrarily set. It has.

  The electronic musical instrument control device according to claim 4 is the electronic musical instrument control device according to any one of claims 1 to 3, wherein the first change rate is determined according to a parameter type set by the operation element. And / or the second rate of change is set.

  The electronic musical instrument control device according to claim 5 is the electronic musical instrument control device according to any one of claims 1 to 4, further comprising timbre selection means for selecting a timbre, wherein the first instrument is selected according to the selected timbre. A change rate of 1 and / or the second change rate is set.

  The electronic musical instrument control device according to claim 6 is the electronic musical instrument control device according to any one of claims 1 to 5, wherein the operation element has an elastic member biased in one direction to be operated. It is.

  According to the control device for an electronic musical instrument according to claim 1, when the value of the current parameter is changed by operating the operator, when the value corresponding to the operation position of the operator is larger than the value of the current parameter, The parameter value is changed at the first change speed. When the value corresponding to the operation position of the operation element is smaller than the current parameter value, the parameter value is changed at the second change speed. If the parameter value is manipulated in a direction in which the parameter value increases, and the parameter value is manipulated in a direction in which the parameter value decreases, the change rate of the parameter value can be changed. effective.

According to the control device for an electronic musical instrument according to claim 2, when the operation element is operated to change the current parameter value, when the operation direction of the operation element is a predetermined direction, the parameter value is the first value. it is increased at a rate of change, when the operation direction of the operation element is a direction opposite to the predetermined direction, the value of the parameter is reduced at a second rate of change, if the operator is abruptly operated In addition, there is an effect that it is possible to change the speed of change of the parameter value according to the direction in which the operation element is operated.

  According to the control device for an electronic musical instrument according to claim 3, in addition to the effect exhibited by the control device for the electronic musical instrument according to claim 1 or 2, the first change speed and / or the second change speed is arbitrarily set. Since the changing speed setting means is provided, there is an effect that the user can arbitrarily set the changing speed.

  According to the electronic musical instrument control device of the fourth aspect, in addition to the effect produced by the electronic musical instrument control device according to any one of the first to third aspects, according to the type of parameter set by the operator, Since the change rate of 1 and / or the second change rate is set, there is an effect that the change rate according to the type of parameter can be set.

  According to the electronic musical instrument control device of claim 5, in addition to the effect produced by the electronic musical instrument control device according to any one of claims 1 to 4, the timbre selection means for selecting a timbre is provided, and the selected timbre Accordingly, since the first change speed and / or the second change speed is set, the change speed according to the timbre can be set, and the user can select the first change by selecting the timbre. There is an effect that the speed and / or the second change speed is set.

  According to the electronic musical instrument control device of the sixth aspect, in the electronic musical instrument control device according to any one of the first to fifth aspects, the operator has an elastic member biased in one direction. When operating the operating element in the direction opposite to the one direction, the operating element is operated against the force urged by the elastic member. Therefore, the operating element is urged by the elastic member. There is an effect that the change speed of the parameter can be changed between the case where the operation is performed against the force and the case where the operation is performed in the opposite direction. That is, the speed when operated in the direction urged by the elastic member tends to be higher than the speed of operating the operation element when operated against the force urged by the elastic member, This trend can be corrected.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram of an electronic musical instrument 1 of the present invention. The electronic musical instrument 1 mainly includes a CPU 10, a ROM 11, a RAM 12, a keyboard 13, an operation panel 14, a pedal 15, an A / D converter 16, and a sound source 17.

The CPU 10 is an arithmetic unit that is an execution subject of the control program, and the ROM 11 stores various control programs executed by the CPU 10 and fixed value data that is referred to during the execution. As the fixed value data, musical tone parameters for forming musical tones corresponding to various timbres and operator parameters for changing the value of a predetermined musical tone parameter by an operator are stored.
The RAM 12 is a rewritable memory for temporarily storing various data, parameter values, and the like when executing the control program stored in the ROM 11. The RAM 12 is configured so that the stored content is retained by the battery even when the power of the electronic musical instrument 1 is cut off. When the musical tone parameter or the operator parameter is edited, the RAM 12 is stored in the RAM 12.

  The keyboard 13 includes a plurality of white keys and black keys, and gives instructions to start and stop the generation of musical tones with a pitch assigned to each key. The operation panel 14 is used to perform various settings and operations of the electronic musical instrument 1 and to display the setting operation status, and is configured to include various switches, rotary encoders and other controls and a display. . Details of the operation panel 14 will be described later with reference to FIG.

  The pedal 15 is provided with a variable resistor whose resistance value is changed by the operation thereof. The operated resistance value is converted into a digital value by the A / D converter 16 as a voltage value and detected by the CPU 10. The pedal 15 is an operator that is operated by being stepped on with a foot. The pedal 15 is urged upward by a spring. When the pedal 15 is not stepped on, the pedal 15 is held at the uppermost position by the spring. Therefore, when the pedal 15 is depressed, a force is required, and when the pedal 15 is returned, the force is relaxed. By this operation, the value of the musical sound parameter such as the volume and pitch assigned to the pedal 15 can be changed.

  The sound source 17 generates a musical sound according to a desired pitch and a key pressing speed based on a key pressed by the keyboard 13, and performs a mute process for generating the musical sound by releasing the key. The sound source 17 is provided with a number of sound generation channels and can simultaneously generate a plurality of musical sounds with the same tone color or different tone colors.

  FIG. 2 is a front view of the operation panel 14 of the electronic musical instrument 1. The operation panel 14 includes a display 20, a pedal button 25, and a rotary encoder 26. The display device 20 is provided with a so-called touch sensor on its display surface. When the displayed position is pressed with a finger or the like, the pressed position is detected and corresponds to the content displayed at the pressed position. Processing is performed.

  In this figure, piano (Piano) is displayed in the timbre display area 21, indicating that the piano is selected as the timbre. When the rotary encoder 26 is rotated leftward or rightward after the timbre display area 21 is pressed, various timbres can be selected. When the keyboard 13 is played, the sound source 17 generates the tone of the selected tone color.

  In the lower part of the tone color display area 21, the types of musical sound parameters set by operating the pedal 15 are displayed as modes. In the case of this piano tone, either sostenuto or expression can be selected as a mode. This selection can be switched by a toggle operation by pressing the pedal button 25.

  If sostenuto is selected, depressing the pedal 15 activates the sostenuto (only the key pressed, the damper does not operate even if the key is released). If the expression is selected, the pedal 15 is The sound volume is controlled by the operation.

  When the tone color is piano, the tone parameter set by operating the pedal 15 is sostenuto or expression, but the type of tone parameter to be set is preset for each tone color.

  Corresponding to these modes, change speed UP, DOWN, maximum value (MAX) of musical tone parameters, and minimum value (MIN) of musical tone parameters are displayed as operator parameters. The change speed UP is a change speed when the musical sound parameter is increased, and the change speed DOWN is a change speed when the musical sound parameter is decreased. That is, assuming that the value of the musical tone parameter corresponding to the operation position set by the pedal 15 is the target parameter value PT and the current musical tone parameter value is the current parameter value PC, the target parameter value PT is larger than the current musical tone parameter value PC. In this case, the current parameter value PC is increased toward the target parameter value PT, and the increasing rate of change is set to UP. Similarly, when the target parameter value PT is smaller than the current musical tone parameter value PC, the current parameter value PC is decreased toward the target parameter value PT, and the decreasing rate of change is set to DOWN.

  These operator parameters can change the value of the operator parameter designated by pressing by pressing the area 22 where each parameter value is displayed with a finger or the like and then rotating the rotary encoder. it can. In this embodiment, the value of each operator parameter can be changed within a range where the minimum value is 0 and the maximum value is 100.

  When the pedal 15 is operated and the target parameter value PT is larger than the current musical tone parameter value PC, IncDelta is added to the current parameter value PC at a predetermined time, which is proportional to the change speed UP, and the target parameter value is set. The current parameter value PC is changed within the range not exceeding. On the other hand, when the pedal 15 is operated and the target parameter value PT is smaller than the current musical tone parameter value PC, DecDelta, which is a value proportional to the change speed DOWN, is subtracted from the current parameter value PC every predetermined time. The current parameter value PC is changed within a range not less than.

The target parameter value PT is a digital value (AD) converted by the A / D converter 16 so as to take a value between the maximum value (MAX) of the musical tone parameter and the minimum value (MIN) of the musical tone parameter. Is a value obtained by converting with a linear function. This linear function has a minimum value of AD (when the pedal is not depressed) as a and a maximum value (when the pedal is depressed) as b.
PT = (MAX−MIN) × (AD−a) / (b−a) + MIN
It is.

  As shown in the figure, when the musical sound parameter type is sostenuto, the changing speed UP when the musical sound parameter value increases is set to 100, and the changing speed DOWN when the musical sound parameter value decreases is also set to 100. Has been. Therefore, when sostenuto is selected as the mode, the current parameter value PC is quickly set to the target parameter value PT when an operation is performed whether the pedal 15 is depressed or the pedal 15 is released.

  The maximum value (MAX) is 100 and the minimum value (MIN) is 0, but an intermediate value is not taken. For example, when the target parameter value PT is 50 or more, the current parameter value PC is 100, If the target parameter value PT is smaller than 50, the current parameter value PC may be set to 0.

  When the musical sound parameter type is expression, the changing speed UP when the musical sound parameter value increases is set to 90, and the changing speed DOWN when the musical sound parameter value decreases is set to 30, respectively. Therefore, when the expression is selected as the mode, if the operation is performed in the direction in which the pedal 15 is depressed, the current parameter value PC is quickly changed to the target parameter value PT, but the direction in which the pedal 15 is released. Is operated, the current parameter value PC is gradually changed and set toward the target parameter value PT as time elapses.

  FIG. 3 is a flowchart showing main processing executed by the CPU 10. This process starts when the electronic musical instrument 1 is turned on and continues until the power is turned off.

  When the power is turned on, initialization is first performed (S1). As the initialization, for example, the tone color is set to piano, the mode of the pedal 15 is set to sostenuto, and the value of the current parameter PC is set to 0. Next, it is detected whether or not the pedal button 25 is operated (S2). If the pedal button 25 is operated, the mode is changed (S2: Yes). That is, it is determined whether or not the current mode is sostenuto (S3) if it is not sostenuto (S3: NO), the mode is set to sostenuto (S4), if it is sostenuto (S3: Yes), the mode is set to expression. Set (S5).

  Next, it is determined whether or not the timbre display area 21 of the display device 20 is operated, and further the rotary encoder 26 is operated to change the timbre (S6). S6: Yes), the musical tone parameters corresponding to the timbre are read from the ROM 11 or RAM 12 and sent to the sound source 17 so as to be set to the changed timbre (S7), and the timbre display area 21 is displayed and set corresponding to the timbre. Change the displayed mode and control parameter display.

  Next, it is determined whether any area 22 of the operator parameters of the display device 20 is operated and the rotary encoder 26 is further operated to change and set the operator parameters (S8). When the operator parameter is changed and set (S8: Yes), the value of the set operator parameter is changed and displayed on the display 20 (S9). When the operator parameter is not changed and set (S8: No) or as another process after the process of S9, for example, a key press / release on the keyboard 13 is detected and a process corresponding to the state is performed. (S10) The process returns to S2.

  Next, processing for setting a musical tone parameter by the operator will be described with reference to the flowchart shown in FIG. This process is an interrupt process activated by a timer interrupt every predetermined time, for example, 10 msec. The A / D converter 16 converts the analog value indicated by the variable resistor of the pedal 15 into a digital value at this time interval. The value of the musical tone parameter corresponding to the digital value converted by the A / D converter 16 is set as the target parameter value PT, and the current musical tone parameter value is set as the current parameter value PC.

  In the flowchart, first, it is determined whether or not the current parameter value PC is smaller than the target parameter value PT (S20). When the current parameter value PC is smaller than the target parameter value PT (S20: Yes), the current parameter value PC is set to a value obtained by adding the value IncDelta to the current parameter value PC. This IncDelta is an increase in the musical sound parameter value added per predetermined time in proportion to the value of the change speed UP when the current parameter value PC is smaller than the target parameter value PT in the selected mode.

  Next, it is determined whether or not the added current parameter value PC exceeds the target parameter value PT (S22). If the current parameter value PC exceeds the target parameter value PT (S22: Yes), the current parameter value is determined. PC is set as the target parameter value PT (S23), and if the current parameter value PC does not exceed the target parameter value PT (S22: No), the value of the current parameter value PC added in the processing of S21 is set as the current parameter value PC. decide.

  If it is determined in S20 that the current parameter value PC is not smaller than the target parameter value PT (S20: No), it is determined whether or not the current parameter value PC is larger than the target parameter value PT (S24). . If it is determined that the current parameter value PC is not greater than the target parameter value PT (S24: No), the current parameter value PC is equal to the target parameter value PT, and the operation position of the pedal 15 is determined. Since no change has been made, this interrupt processing is terminated without performing any processing (return).

  On the other hand, when the current parameter value PC is larger than the target parameter value PT (S24: Yes), the current parameter value PC is set to a value obtained by subtracting the value DecDelta from the current parameter value PC. The DecDelta is a decrease in the musical sound parameter value subtracted per predetermined time in proportion to the value of the change speed DOWN when the current parameter value PC is larger than the target parameter value PT in the selected mode.

  Next, it is determined whether or not the subtracted current parameter value PC is smaller than the target parameter value PT (S26). If the current parameter value PC is smaller than the target parameter value PT (S26: Yes), the current parameter value PC is determined. Is the target parameter value PT (S27). If the current parameter value PC is not smaller than the target parameter value PT (S26: No), the value of the current parameter value PC subtracted in the process of S25 is determined as the current parameter value PC. To do.

  Next, the tone is controlled based on the current parameter value PC determined as described above (S28), and this interrupt process is terminated (return).

  Thus, according to the electronic musical instrument control apparatus of the present invention, when the current parameter value PC is changed based on the target parameter value PT corresponding to the operation position set by the operator, the current parameter value PC is set to the target parameter value PC. Since the changing speed is set for each of the case where the parameter value is larger than the parameter value PT and the case where the current parameter value PC is smaller than the target parameter value PT, appropriate musical sound control can be performed even when the operator is suddenly operated. It can be carried out. In particular, when operating an operator that is urged in one direction by an elastic member such as a spring, such as a pedal operator, the operator changes abruptly when operated in that urged direction. As a result, the musical tone has been changed abruptly. However, such inconvenience can be solved and operability can be improved.

  Note that the first change speed in claim 1 corresponds to the change speed UP of the musical tone parameter value when the current parameter value PC is smaller than the target parameter value PT, and the second parameter is the target of the current parameter value PC. This corresponds to the change speed DOWN of the musical sound parameter value when it is larger than the parameter value PT.

  The present invention has been described above based on the above embodiments, but the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed.

  For example, in the above embodiment, the change speed is set depending on whether the current parameter value PC is larger than the target parameter value PT and the current parameter value PC is smaller than the target parameter value PT. It is also possible to detect the operation direction in the case of being performed, and to set the change speed corresponding to the operation direction. That is, the operation direction may be detected from the position of the operation element detected this time by the A / D converter and the position of the operation element detected last time, and the change speed may be set according to the operation direction.

  In the above embodiment, the pedal operated by stepping on with a foot is taken as an example of the operation element. However, the present invention may be applied to a round volume, a slide volume, a rotary encoder, etc. that are mainly operated by hand. In addition, it can rotate in both the left and right directions like a bender, and the amount of light received is changed by reflecting or blocking light called an operator or beam controller that is always held at the midpoint by a spring. The present invention may be applied to an operator that controls musical sounds according to the above.

  In the above embodiment, the tone color is controlled by selecting one of the two types of tone parameters with the pedal. However, one tone parameter is controlled for one tone color, and the tone parameter is set as the tone parameter. The first and second change speeds may be set. Further, the first and second change speeds may be set for each musical sound parameter regardless of the tone color. For example, the musical tone parameter controlled by the pedal may be arbitrarily set regardless of the tone color, and the first and second change speeds may be set for each musical tone parameter.

  In the above embodiment, when the musical sound parameter type is expression (volume), the first change speed and the second change speed are set to different values, but the pitch (pitch), filter coefficient, effect It may be set to a musical tone parameter such as a musical tone parameter.

  In the above embodiment, the change speed of the musical sound parameter is IncDelta which is a musical sound parameter value which increases per unit time, or DecDelta which is a musical sound parameter value which decreases. However, a predetermined value of the musical sound parameter is added, or You may make it change the time interval to subtract.

  In the above embodiment, the digital value converted by the A / D converter and the musical tone parameter value are in a proportional relationship, but may be in a relationship represented by a curve. In this case, a musical tone parameter value can be obtained by storing a look-up table representing a curve in a memory and referring to the AD value.

It is a block diagram of the electronic musical instrument stand of this invention. It is an operation panel figure of an electronic musical instrument. It is a flowchart which shows the main process. It is a flowchart which sets a musical tone parameter with an operator.

1 Electronic musical instrument 10 CPU (control means)
15 Pedal (operator)
16 A / D converter (operation position detecting means)
20 Display 21 Tone display area (part of tone selection means)
26 Rotary encoder (part of timbre selection means or change speed setting means)

Claims (6)

An operator that can be operated continuously to a predetermined position;
An operation position detecting means for detecting an operation position operated by the operation element;
Control means for setting a parameter value based on the operation position detected by the operation position detection means,
When the parameter value corresponding to the operation position detected by the operation position detection unit is larger than the current parameter value, the control unit increases the parameter value at a first change speed, and the operation position When the parameter value corresponding to the operation position detected by the detecting means is smaller than the current parameter value, the parameter value is decreased at a second change speed different from the first change speed. An electronic musical instrument control device. An operator that can be operated continuously in a predetermined direction or in the opposite direction;
An operation direction detecting means for detecting an operation direction in which the operator is operated;
Control means for setting the value of the parameter based on the operation direction detected by the operation direction detection means,
When the operation direction detected by the operation direction detection unit is a predetermined direction, the control unit increases the value of the parameter at a first change speed, and the operation direction detected by the operation direction detection unit In the case where is in the opposite direction, the parameter value is decreased at a second change rate different from the first change rate.   3. The electronic musical instrument control device according to claim 1, further comprising change speed setting means for arbitrarily setting the first change speed and / or the second change speed.   4. The first change rate and / or the second change rate are set according to the type of parameter set by the control means. Electronic musical instrument control device.   5. A timbre selecting means for selecting a timbre, wherein the first change speed and / or the second change speed is set according to the selected timbre. A control device for an electronic musical instrument according to claim 1. 6. The control device for an electronic musical instrument according to claim 1, wherein the operating element has an elastic member that is urged in one direction to be operated.

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