JP2595460Y2 - Electronic musical instrument controller - Google Patents

Description

[Detailed description of the invention] [Industrial application field] In the invention, when a modulation effect, for example, a vibrato effect is added to a musical sound to be generated, the modulation is performed by delaying a predetermined delay time from the start of the musical sound. The present invention relates to a control device for an electronic musical instrument to which an effect can be added.

[Problems to be Solved by Conventional Techniques and Inventions] Conventionally, in an electronic musical instrument control apparatus capable of setting the above-described delay time for a modulation effect, a slide volume is set in an edit mode in which various data can be set. In some cases, an analog voltage output from a variable resistor such as a rotary resistor or the like is converted into a digital signal, and the digital signal sets the delay time. Further, there is a type in which one of numerical values from 0 to 99 is set as a delay time by an up / down key (value key) or a numeric keypad.

However, in these conventional electronic musical instrument control devices, since the delay time is set by inputting a numerical value, the image at the time of setting the delay time and the vibrato effect are actually added with a delay. However, there is a problem that a deviation from the delay time tends to occur, and it is often necessary to repeat the setting operation several times in order to set data as imagined.

[Purpose of the Invention] The present invention has been made to solve the above-described problem, and is to set a delay time when a modulation effect is added to a musical sound in a manner that is easily and intuitively understood. It is an object of the present invention to provide a control device for an electronic musical instrument that can be used.

[Gist of the Invention] In order to achieve the above object, the present invention provides a technique in which, when the delay time setting mode is designated by the delay time setting mode designating means, a performance input is applied, that is, for example, after a key is pressed. Modulation variable control means is 0
The point is that the time until a value other than the value is output is counted by the counting means, and the count value is converted by the converting means into data corresponding to the delay time.

Further, the present invention relates to a method in which the value of the count obtained by the counting means by the conversion means is used to calculate the time from when a performance input is applied to when a low-frequency oscillator (LFO) for applying a modulation effect starts outputting an oscillation output. The point is that the data is converted into data that defines

Further, the present invention is characterized in that a modulation wheel capable of changing the depth (degree of modulation) of the vibrato effect is used as the modulation variable means.

[Embodiment] An embodiment of a control device for an electronic musical instrument according to the present invention will be described below with reference to the drawings.

<Configuration> FIG. 1 is an overall circuit configuration diagram of an electronic keyboard instrument. In the figure, based on a key operation of the keyboard 1, a key on / off signal, key code data as pitch designation information of a musical tone to be produced, or a velocity signal (initial touch data) corresponding to the strength at which a key is pressed, etc. Is provided to the CPU 2 which is a central processing unit including a microcomputer.
The switch group SW includes a tone selection switch 3 for specifying a tone of a musical tone, an edit mode setting switch 4 for setting the mode of the musical instrument to an edit mode in which various data can be set, A delay time setting mode designating switch 5 for setting a delay time which is a delay time until a vibrato effect is added to a tone after a key operation, an up key and a down key for entering various data including setting of delay time And a modulation wheel setting designation key 7 for designating delay time settings by operating the modulation wheel 11-2. And these switches SW
The operation signal output by the operation of is also given to the CPU 2.

The delay time is determined by an LFO (low frequency oscillator) 8 controlled by the CPU 2 when the keyboard 1 is turned on.
This is set as a delay time until a low-frequency signal for adding a vibrato effect to a musical tone starts to be output.

Further, the after-touch data for the keyboard 1 detected by the after-touch detection circuit 9 (data in which the pressing force that keeps the key pressed state changes) is opened at a time-division time t1 which is a time-division timing signal t provided from the CPU 2. It is taken into CPU 2 via G1 and A / D converter 10. A signal for turning on the modulation switch 11-1 in the modulation operation unit 11 and rotating the modulation wheel 11-2 from the near side to the far side to gradually increase the depth of the vibrato effect on the musical tone to a preset depth. But also time-sharing time
At t2, the data is taken into the CPU 2 via the gate G2 and the A / D converter 10. When the modulation switch 11-1 is off, the modulation wheel 11-2 does not function, and a vibrato effect having a preset depth is added according to the tone selected by the tone selection switch 3. The modulation wheel 11-2 can output a signal for variably setting a delay time from when the keyboard 1 is turned on until the vibrato effect is added to the musical sound. When the pitch bend wheel 12-1 in the pitch bend operation section 12 as pitch bend means is rotated in the depth direction from the center position, as described later when the pitch bend range setting mode designation switch 5 is turned on,
Data that is set in advance by key-on of two keys on the keyboard 1 and that is used to gradually increase the pitch of a musical tone within a pitch bend range once stored in a random access memory (RAM) 13, for example, within an octave range, At time-division time t3, the data is captured by the CPU 2 via the gate G3 and the A / D converter 10. Conversely, pitch bend wheel 12
When -1 is rotated forward from the center position, data for gradually lowering the pitch of the musical tone within a range of up to one octave is similarly taken into the CPU 2. In addition, when the foot pedal 14 operated by the foot is operated, a signal for controlling the volume of the musical sound is taken into the CPU 2 via the gate G4 and the A / D converter 10 at the time division time t4. Further, when the slide volume 15 is operated, a signal for controlling the volume of the musical tone is also generated at the time division time t5 by the gate G5 and the A / D converter 10.
Is taken into CPU2. The display unit 16 displays the operation states of the switches in the switch group SW by, for example, a liquid crystal display device.

Also, in the delay time setting mode described above, when it is specified that the delay time is to be set by the modulation wheel 11-2, the modulation wheel 11-2 is set to a value other than 0 after the keyboard 1 is turned on. It counts the time until the output value starts to be output.

The CPU 2 executes a process for various types of information taken from the keyboard 1, the switch group SW, the LFO 8, the A / D converter 10, the RAM 13, and the like based on a program provided from a ROM (read only memory) 18, A tone control signal (key-on / off information, pitch designation information, etc.) for controlling tone signal tone generation / silence is transmitted to the tone generator 19. The tone signal output from the tone generator 19 is converted from a digital signal to an analog signal by the D / A converter 20, and is emitted as a tone through the amplifier 21 and the speaker 22.

<Operation> Next, regarding the operation of the electronic keyboard instrument of this embodiment,
The processing operation of U2 will be mainly described.

FIG. 2 is a flowchart showing the processing performed by the CPU 2. FIG. 2 (a) shows the electronic keyboard instrument entering various data to form a musical tone signal or imparting various effects to musical sounds. FIG. 8 is a flowchart of an edit mode process for editing parameters for the editing.
The flow shown in FIG. 2A corresponds to the edit mode setting key 4 for the main flow (not shown) in the CPU 2.
When is turned on, it interrupts and starts. First, all the mode flags other than the edit mode flag are cleared (step S1), and then the edit mode flag is set to 1 so that the edit mode is set to enable entry of various data (snap S2). Further, apart from the edit mode flag, a state in which an edit item flag corresponding to the item to be edited is set to "1" from among various items to be edited, and a desired edit corresponding to the flag is possible. Jump to (Snap S3). Then, after executing the edit flow for the desired item that has been jumped (snub S4), the process returns to the main blow.

FIG. 2 (b) shows a subroutine in the snap S4 when the flag is set in the delay time setting item in the snap S3 in the flow shown in FIG. 2 (a), that is, the oscillation start timing of the LFO 8 ( Times of Day)
FIG. 7 is a flowchart showing a process for setting a delay time by controlling the delay time. After the start, the display unit 16 first displays the state of the delay time setting mode (snap S5). Subsequently, it is determined whether or not the delay time is set by operating the modulation wheel 11-2 (snub S6). If the modulation wheel setting designation key 7 is turned on, the determination is YES, and the modulation wheel 11-2 is determined. Move to the flow of delay time setting by (S7). Conversely, if NO is determined, manual setting, for example, value key 6
Move to the flow to be set by the operation (Snap S
8), after performing each setting process, return to the main flow.

FIG. 2 (c) is a flowchart showing the contents of the delay time setting flow using the modulation wheel 11-2 in FIG. 2 (b). In the figure, after the start of the flow, it is displayed on the display unit 16 that the delay time is set by operating the modulation wheel 11-2 (snap S9). Next, it is checked whether or not 1 is set in the key-on flag (snap S10). However, since the key-on flag is initially reset, it is determined to be NO. Subsequently, it is checked whether or not key-on has been performed (snap S11). If NO is determined, the process returns to the main flow as it is because there is no time to set a delay time. However, if the determination is YES, it is necessary to count the elapsed time based on the time at which the key-on operation was performed, so that the key-on flag is set to 1 (step S12) and the counter 17
Reset to start counting (snap S13),
Return to the main flow. In this flow, when returning to the main flow, when other processing operations are required, such as operating the various switches of the switch group 3 described above, after performing those processings, this flow is repeated. Will enter.

When entering this flow again, it is determined that the key-on flag is set to 1 (step S10). Then, data obtained by converting the wheel data output in response to the operation of the modulation wheel 11-2 into digital data by the A / D converter 10 is read (step S14). Here, it is checked whether or not the data read from the A / D converter 10 is 0 (step S15), and when it is determined as YES, the modulation wheel 11-2 is not rotated at all from the neutral position. In this case, that is, when the operation for setting the delay time has not been performed, the process directly returns to the main flow. However, if the determination is NO, it means that the modulation wheel 11-2 has been operated to set the delay time, so the count value of the counter 17 that has been reset and has started counting is loaded (step S16). ). Subsequently, the count value of the counter 17 is converted into a delay time, that is, data as a parameter for delaying the output start time of the LFO 8 from the key-on time (step S17). Then, the data of the delay time obtained by the conversion is written in the RAM 13, and then the process returns to the main flow (step S18).

As described above, according to the above-described embodiment, when performing a performance in which a modulation effect such as a vibrato effect is added to a musical tone, a rotation operation of the modulation wheel 11-2 is performed from a point in time when a key is pressed on the keyboard 1 for performance. The time until it is counted by the counter 17 and the count value is
This is set as the time until the oscillation output of the LFO 8 is applied to the sound source unit 19, that is, the delay time from when the key is pressed until the modulation effect is added. In the operation of the modulation wheel 11-2 in this case,
The strength of the operation, that is, the magnitude of the operation amount (rotation amount) does not matter, and it is only a matter of whether or not the user has rotated from the neutral position and moved, and the operation is very simple. It is.

<Modified embodiment> In the above embodiment, the keyboard 1 is used as the performance input means.
Other types of electronic musical instruments, such as electronic stringed musical instruments that have a string stretched to perform picking operations and electronic wind instruments that have breath sensors to perform breathing operations, but are applied to electronic keyboard musical instruments equipped with Is also applicable.

Although the modulation wheel setting designation key 7 is provided in the above embodiment, the modulation wheel setting designation key 7 is not particularly provided, and the delay time is always set by the modulation wheel 11-2 regardless of the value key 6 or the like. May be performed. Further, the modulation variable means is not limited to the modulation wheel 11-2, but may be an ordinary variable resistor or a slide volume.

Note that the keyboard 1 and the sound source unit 19 may be controlled separately by MIDI communication, and the amplifier 20 and the speaker 21 may be separately connected and electrically connected to the main body.

[Effects of the Invention] As described above, according to the invention of the first aspect, when the delay time setting mode is designated, the elapsed time from the application of the performance input to the operation of the modulation variable means is specified. The data sets the delay time for adding vibrato or other modulation effects, such as the tremolo effect, growl effect, etc., so that the performer does not have to set it numerically, but has to set the delay time specially. There is no need to provide data input means or the like, and only by utilizing the modulation variable means that can change the depth of the modulation effect,
A control device for an electronic musical instrument with a simple configuration that allows the delay time to be easily set by an operation closely related to the sense that the player simply performs the operation on the modulation variable means at an arbitrary strength and timing. Is obtained.

According to the invention of claim 2, in particular, the conversion means calculates the elapsed time from the application of the performance input to the output of the low-frequency oscillator to the low-frequency signal by the count value obtained by the counting means. Since the data is converted into data to be determined, the start of the oscillation output operation of the low-frequency oscillator, which is usually used to define the repetition period (speed) and depth of the modulation effect, is controlled. There is an effect that a control device for an electronic musical instrument having a simple configuration capable of easily setting a delay time in addition is provided.

According to the third aspect of the present invention, in particular, since the modulation wheel changing means is a modulation wheel capable of changing the depth of the vibrato effect, the player usually changes the depth (modulation degree) of the vibrato effect. For the modulation wheel that you are used to control, simply perform the rotation operation at the timing of the desired delay time with completely arbitrary strength. There is an effect that a control device for an electronic musical instrument having a simple configuration that can be set accurately can be obtained.

[Brief description of the drawings]

The drawings are for explaining a control device for an electronic musical instrument according to an embodiment of the present invention. FIG. 1 is an overall circuit configuration diagram of the electronic keyboard musical instrument, and FIG. 2 is a modulation wheel.
It is a flowchart figure which shows the processing operation in delay time setting by operation 11-2. 1 ... keyboard, 2 ... CPU, 5 ... delay time setting mode designation switch, 6 ... value key, 7 ... modulation wheel setting designation key, 8 ... LFO, 11-2
… Modulation wheel, 13… RAM, 17… Counter, 19… Sound source section.

Claims (3)

(57) [Scope of request for utility model registration] 1. A performance input means for applying a performance input for controlling the start of tone generation of a musical tone, and a modulation varying means for changing a depth of a modulation effect added to the musical tone. An electronic musical instrument control device capable of setting a delay time from when the modulation effect is added to when the modulation effect is started to be added, a delay time setting mode designating means for designating a delay time setting mode capable of setting the delay time, When the delay time setting mode is designated by the delay time setting mode designation means, the time from when a performance input is applied to the performance input means to when a value other than 0 is output from the modulation variable means is counted. Counting means, and the count value obtained by the counting means corresponds to the delay time. A control device for an electronic musical instrument, comprising: conversion means for converting data into data; and delay time setting means for setting data obtained by the conversion means as the delay time. 2. The converting means converts the count value obtained by the counting means into data which determines a time until a low-frequency oscillator for providing the modulation effect outputs a low-frequency signal. The control device for an electronic musical instrument according to claim 1, wherein: 3. The control apparatus for an electronic musical instrument according to claim 1, wherein said modulation varying means is a modulation wheel capable of changing a depth of a vibrato effect.