JPH09198046A - Electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provided an electronic musical instrument which enables a player to play with high musicality corresponding to the playing level of the player. SOLUTION: When a pin bend wheel is operated while '1' is set to a flag DLRST, a counter DL is reset, and the output from an envelope generator(EG) 14 is initialized, so that the EG 14 outputs '0'. Consequently, a multiplier 12 outputs '0', but when a modulation wheel is not operated (MOD=0) at this time, '0' is outputted by a multiplier 13 as well, so an adder 15 outputs '0' and an adder 16 supplies only a conversion value Pb to a sound source 6. Therefore, the pitch is varied corresponding to only the operation of the pitch bend wheel. Even when the pin bend wheel is stopped from being operated while '1' is set to the flag DLRST, the counter DL is reset and the multiplier 12 outputs an effective (not '0') signal a specific time T later.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument capable of controlling the same musical tone control element by a plurality of control means.

[0002]

2. Description of the Related Art Conventionally, there are known electronic musical instruments capable of controlling the same musical tone control element (parameter) by a plurality of control means.

In such a conventional electronic musical instrument, for example, the pitch of a musical tone, which is one of the musical tone parameters, is set to LFO (Low Fr
output (equency Oscillator) to change (modulate),
The musical effect is improved by changing the pitch bend wheel, the modulation wheel, or the like according to the operation amount of a performance operator.

[0004]

However, in the above-mentioned conventional electronic musical instrument, when a parameter is controlled by a certain control means, if the parameter is controlled by another control means, control contrary to the intention of the performer is achieved. Was sometimes done.

For example, when the output from the LFO acts on the pitch as described above, it has an effect of vibrato, and this vibrato shows the strength or the like depending on the period of the LFO output signal, the modulation depth, and the like. Can be changed. The cycle, the modulation depth, etc. are usually part of the timbre parameter, and when the timbre is selected, the cycle, the modulation depth, etc. corresponding to this timbre are read from the storage area. Instructed by LFO. Therefore, when a tone color is selected and vibrato is set in the tone color parameter, a vibrato-tone is automatically generated.

On the other hand, vibrato is a highly musical effect that gives an appropriate pitch change to a musical sound when a beginner plays it, but for advanced players, the modulation cycle and the modulation depth are constant. Not satisfied with this, the advanced player controls the pitch as intended by using a performance operator such as a pitch bend wheel or a modulation wheel. At this time, if the vibrato is applied as described above, the change in pitch and L
Both of the changes in pitch due to FO act on the pitch, sometimes giving an effect contrary to the player's intention. For example, when you want to express hiccups, the vibrato keeps on and you get a strange hiccup that is not musically good.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an electronic musical instrument capable of performing a highly musical performance according to the performance level of the performer.

[0008]

In order to achieve the above object, the present invention provides a performance operator for a player to operate, control signal generating means for generating a control signal that changes with a predetermined characteristic, and the generation thereof. Based on the controlled musical tone control element, and a musical tone control means capable of controlling the prescribed musical tone control element according to the control signal and controlling the prescribed musical tone control element also according to the output of the performance operator. A musical sound generating means for generating a musical sound, wherein the musical sound control means instructs the control signal generating means to suppress generation of the control signal when the state of the performance operator changes. Characterize.

Further preferably, the control signal generating means includes control signal suppressing means for suppressing the generation of the control signal in response to the suppressing signal, and the suppressing signal is the elapsed time from the start of outputting the signal. Is a signal whose characteristics change in accordance with the above, and is a signal having a characteristic of suppressing the generation of the control signal within a predetermined time from the start of the output of the signal, and then canceling the suppression, wherein the tone control means When the state of the performance operator changes, the control signal suppressing means is instructed to return the output state of the suppression signal to the state within the predetermined time.

Further, preferably, a control operator operated by a player to control the generated control signal, branching means for branching the generated control signal into two systems, and the two branched systems. And a control signal control means for controlling the control signal of one of the branched control signals of the two systems according to the output of the control operator. The control signal suppressing means is
Among the branched two-system control signals, the control signal of the other system is suppressed, and the musical sound control means controls the predetermined musical sound control element according to the control signal output from the adding means, When the state of the performance operator changes, the control signal suppressing means is instructed to return the output state of the suppression signal to the state within the predetermined time.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing a schematic configuration of an electronic musical instrument according to an embodiment of the present invention.

In FIG. 1, the electronic musical instrument according to the present embodiment has a keyboard 1 for inputting pitch information, various parameter information, and changing the value of a selected parameter. A control unit 3 that includes an operator group 2 including a pitch bend wheel, a modulation wheel, and the like, and a CPU (not shown), for example, and that controls the entire apparatus.
A ROM 4 for storing a control program executed by the control unit 3 and table data, and an RA for temporarily storing various parameter information, calculation results, various input information, etc.
M5, a sound source 6 for generating a musical tone signal according to the pitch information input from the keyboard section 1 and various input information input from the operator group, and various effects on the musical tone signal generated by the sound source 6. An effect imparting unit 7 for imparting, and converting the musical tone signal imparted with the effect output from the effect imparting unit 7 into sound,
For example, the sound system 8 includes a speaker and the like.

FIG. 2 is a block diagram showing a detailed configuration of the control unit 3.

In FIG. 1, the control unit 3 controls the LFO 11 for modulating the pitch of the tone parameters.
And two multipliers 12 and 13, and an envelope generator (EG) for generating a musical tone envelope
14 and two adders 15 and 16.

A frequency designating signal for designating the frequency of the output signal is input to the LFO 11, and the level of the frequency designating signal is the output of the modulation wheel of the operator group 2, specifically, the modulation wheel. Is controlled according to a value obtained by converting this output value (hereinafter, this value is referred to as a "converted value MOD"), instead of the output value (manipulation amount) itself.

The output side of the LFO 11 is connected to one input side of each of the multipliers 12 and 13, and the output side of the EG 14 is connected to the other input side of the multiplier 12.

The EG 14 outputs, for example, a signal having a characteristic shown in FIG. 3 (a signal indicating the depth of vibrato), and an input counter DL (this counter DL of the RAM 5 in the present embodiment is used. A vibrato depth at that time is output according to a count value of a soft counter secured in a predetermined area (as will be described later, this count value indicates time). Furthermore, EG1
An EG parameter is input to 4, and the output signal characteristic is determined by this EG parameter. Specifically, FIG.
In the above, various elements that determine the signal characteristics such as the delay time T until the signal rises, the slope (= tan θ) of the signal at the rise time, and the target value R can be changed by changing the EG parameter.

The conversion value MOD is input to the other input side of the multiplier 13, and the output side of the multiplier 13 and the output side of the multiplier 12 are connected to two input sides of an adder 15, respectively. Has been done.

The output side of the adder 15 is connected to one input side of the adder 16, and the other input side of the adder 16 is
A value obtained by converting the output value (operation amount) from the pitch bend wheel of the manipulator group 2 (hereinafter, this value will be referred to as “converted value P”).
b)) is supplied. The output side of the adder 16 is connected to the input side of the sound source 6.

In this way, the signal output from the LFO 11, the frequency of which is determined according to the frequency designation signal, is branched into two, and one of the signals is multiplied by the output of the EG 14 by the multiplier 12. Then, the level is changed, and the other signal is multiplied by the conversion value MOD of the modulation wheel by the multiplier 13 to change the level. Then, the outputs from the multipliers 12 and 13, that is, the LFO1 in which the signal levels are changed, respectively.
The outputs from 1 are added by the adder 15 and output to the adder 16 as a signal Vib indicating a vibrato value. This signal Vib is added by the adder 16 to the conversion value Pb of the pitch bend wheel to obtain the pitch change ΔPi.
It is output to the sound source 6 as tch.

In the sound source 6, this pitch change ΔPitc
A tone signal is generated according to h, and the effect imparting section 7
After the effect is added to the generated tone signal, it is converted into sound by the sound system 8.

Although the control unit 3 is described as being configured by hardware as shown in FIG. 2, it is described as such for convenience of description, and in practice, the DSP (Di
digital signal processor) and its microprogram, or software by a program executed by the CPU. In fact, also in this embodiment, the adders 15 and 16 are replaced by software. Of course, the control unit 3 may be configured by hardware.

The control processing executed by the electronic musical instrument configured as described above will be described below with reference to the flowcharts of FIGS.

FIG. 4 is a flow chart showing the procedure of a main routine executed by the control unit 3, particularly the CPU.

In the figure, first, initial settings such as resetting various ports of the CPU and clearing the RAM 5 are performed (step S1).

Next, a tone color setting process for setting parameters relating to the tone color and the like is performed in accordance with the player's setting operation (step S2).

Then, a key processing subroutine (details of which will be described later with reference to FIG. 5) according to the pressed state of each key of the keyboard section 1 is executed (step S3), and modulation is performed according to the operating state of the modulation wheel. Wheel processing subroutine (details of which will be described later with reference to FIG. 6)
Is executed (step S4), and a pitch bend wheel processing subroutine (the details of which will be described later with reference to FIG. 7) according to the operation state of the pitch bend wheel is executed (step S5).

Further, other processing other than the above-described processing (eg, sound generation processing) is performed (step S
6) After that, it returns to step S2 and repeats the above-mentioned processing.

FIG. 5 is a flow chart showing the detailed procedure of the key processing subroutine of step S3.

In the figure, first, it is determined whether or not a key is pressed (key-on) (step S11).

When it is determined in step S11 that the key is turned on, it is determined whether or not there is another key that is being pressed (step S12). When there is no other key that is being pressed, the counter DL is set. It is reset (“0”) (step S13). When the counter DL is reset in this way, the output from the EG 14 returns to the initial value (“0” in this embodiment) as shown in FIG.

On the other hand, if it is determined in step S12 that another key is held down, step S13 is skipped and the process proceeds to step S14. Here, the reason why the counter DL is not reset when there is another key held down is that when the counter DL is reset, the signal with the signal level "0" is output from the EG 14 as described above. As a result, the signal having the signal level "0" is output from the multiplier 12, so that when vibrato is applied to the musical tone being currently sounded, the vibrato is interrupted and an uncomfortable feeling occurs.

In step S14, the above-mentioned step S11 is performed.
A key-on process corresponding to the depressed key determined in step S15 is executed, and the process proceeds to step S15.

On the other hand, if it is determined in step S11 that there is no key-on, the process proceeds to step S15.

In step S15, it is determined whether or not there is a key-off. When there is a key-off, the key-off process corresponding to the key is executed (step S16), and thereafter, this key-processing subroutine is terminated, but there is no key-off. Sometimes, this key processing subroutine is immediately terminated.

FIG. 6 is a flow chart showing the detailed procedure of the modulation wheel processing subroutine of step S4 of FIG.

In the figure, it is determined whether or not the output value MW of the modulation wheel has changed (step S2).
1) If the output value MW does not change, this modulation wheel processing subroutine is immediately ended.

On the other hand, in the determination of step S21, the output value M
When W changes, the output value MW is converted into the converted value MOD (step S22), and then this modulation wheel processing subroutine is ended. Here, the output value (conversion value MOD) after conversion (for example, conversion such as performing a limit process after multiplying the output value by a predetermined constant) is used without using the output value MW of the modulation wheel as it is. The output value MW of the modulation wheel is a value irrelevant to the value (order etc.) that can be used to change the pitch, such as an integer value from 0 to 255 (when the resolution is 8 bits). Therefore, whether to process (convert) when finally acting on the pitch, or to convert and store when the output of the modulation wheel is detected, this converted value is directly applied to the pitch. This is because it is necessary to select either one, and in the present embodiment, the latter is selected.

FIG. 7 is a flow chart showing the detailed procedure of the pitch bend wheel processing subroutine of step S5 of FIG.

In the figure, first, it is determined whether or not the output value PB of the pitch bend wheel has changed (step S31).

If it is determined in step S31 that the output value PB has not changed, this pitch bend wheel processing subroutine is immediately terminated, while if the output value PB has changed, the state of the flag DLRST of the currently selected tone color is determined. (Step S32).

Here, the flag DLRST indicates the counter D when the output value PB of the pitch bend wheel changes.
This is a flag for determining whether to reset L, and when "1" is set, the counter DL
Is reset and when "0" is set,
The counter DL is not reset. The state of this flag is the tone color setting processing of step S2 of FIG.
It can be set freely by the performer.

The flag DL is determined by the determination in step S32.
When RST is "1", the counter DL is reset (step S33), while the flag DLRST is "0".
If, then step S33 is skipped and step S
Proceed to 34.

In step S34, the above-mentioned step S22 is performed.
Similarly, after converting the output value of the pitch bend wheel into the converted value Pb, the pitch bend wheel processing subroutine is ended.

FIG. 8 is a flow chart showing the procedure of the timer interrupt process. This timer interrupt process is executed in response to a timer interrupt signal generated every predetermined time.

In the figure, first, the counter DL is incremented by "1" (step S41).

Next, the signals Vib are calculated by adding the outputs from the multipliers 12 and 13 (step S42), and the calculated signal Vib and the conversion value Pb are added to change the pitch. The minute ΔPitch is calculated (step S43).

Further, after transmitting the pitch change ΔPitch to the sound source 6 (step S44), the timer interruption process is terminated.

As described above, in the present embodiment,
When the pitch bend wheel is operated while the flag DLRST is set to "1", the counter DL is reset, so that "0" is output from the EG 14 in FIG. 2 and thus "0" is output from the multiplier 12. To be done. At this time, if the modulation wheel is not operated (MOD = 0), the multiplier 13 also outputs “0”, so that the adder 15 outputs “0” and the adder 16 outputs the converted value Pb. Only the sound source 6 is supplied. Therefore, the pitch is changed only in accordance with the operation of the pitch bend wheel, so that the bend performance as intended by the player can be performed.

Further, even if the operation of the pitch bend wheel is stopped while the flag DLRST is set to "1", the counter DL is reset, so that the signal from the multiplier 12 is output after the predetermined time T explained in FIG. It will be output, and it will be natural for the vibrato to be restored again after the bend performance.

Furthermore, the output of the LFO 11 is branched into two systems, and the EG 14 controls only one of the systems.
Since the other system is controlled by the modulation wheel, it does not completely prohibit the bend performance while applying vibrato. In other words, even in rare cases when the expression of hiccup while applying vibrato is needed, it is possible by intentionally raising the modulation wheel.

In this embodiment, when the operating state of the pitch bend wheel changes, the counter DL provided to the EG 14 is reset to set the vibrato amplitude to "0". However, the present invention is not limited to this. May be made smaller (that is, suppressed). Further, the operator is not limited to the pitch bend wheel, and may be any operator.

Further, in the present embodiment, the vibrato is taken as an example, but the parameter to which the present invention can be applied is not limited to the pitch, but other factors such as other timbre parameters or effect parameters may be selected from a plurality of causes. It goes without saying that it may be anything if there is control of.

[0055]

As described above, according to the present invention,
When the state of the performance operator changes, an instruction to suppress the generation of the control signal is issued to the control signal generating means, and a predetermined musical tone control element is controlled according to the output of the performance operator, and the control is performed. Since the musical tone is generated based on the musical tone control element thus generated, it is possible to perform a highly musical performance according to the performance level of the performer.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of an electronic musical instrument according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a detailed configuration of a control unit in FIG.

FIG. 3 is a diagram showing an example of characteristics of a signal output from the EG of FIG.

FIG. 4 is a flowchart showing a procedure of a main routine executed by the control unit of FIG.

5 is a flowchart showing a detailed procedure of a key processing subroutine of FIG.

FIG. 6 is a flowchart showing a detailed procedure of a modulation wheel processing subroutine of FIG.

FIG. 7 is a flowchart showing a detailed procedure of a pitch bend wheel processing subroutine of FIG.

FIG. 8 is a flowchart showing a procedure of timer interrupt processing.

[Explanation of symbols]

2 operation group (performance operator, control operator), pitch bend wheel (performance operator), modulation wheel (control operator) 3 control unit (musical sound control means) 6 sound source (musical sound generation means) 7 effect imparting section (musical sound) Generating means) 11 LFO (control signal generating means) 13 Multiplier (control signal controlling means) 14 EG (control signal suppressing means) 15 Adder (adding means)

Claims (3)

[Claims] 1. A performance operator for a player to operate, a control signal generating means for generating a control signal which changes with a predetermined characteristic, and a predetermined tone control element according to the generated control signal. At the same time, it has a musical tone control means capable of controlling the predetermined musical tone control element even according to the output of the performance operator, and a musical tone generating means for generating a musical tone based on the controlled musical tone control element. An electronic musical instrument characterized in that the control means instructs the control signal generation means to suppress the generation of the control signal when the state of the performance operator changes. 2. The control signal generating means includes control signal suppressing means for suppressing the generation of the control signal according to the suppressing signal, and the suppressing signal has a characteristic according to an elapsed time from the start of outputting the signal. A changing signal, suppressing the generation of the control signal within a predetermined time from the start of output of the signal,
After that, the tone control means is a signal having a characteristic of releasing the suppression, and when the state of the performance operator changes, the tone control means returns the output state of the suppression signal to the state within the predetermined time, The electronic musical instrument according to claim 1, wherein the electronic musical instrument is instructed to the control signal suppressing means. 3. A control operator operated by a player to control the generated control signal, branching means for branching the generated control signal into two systems, and two branched system control signals. And a control signal control means for controlling a control signal of one of the branched control signals of the two systems according to the output of the control operator, the control signal suppression The means suppresses the control signal of the other system of the branched two systems of control signals, and the tone control means controls the predetermined tone control element according to the control signal output from the adding means. 3. The electronic apparatus according to claim 2, further comprising the step of instructing the control signal suppressing means to return the output state of the suppression signal to the state within the predetermined time when the state of the performance operator changes. Musical instrument.