JP2002351468A - Electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the number of timbres to be simultaneously produce according to the manipulated variable of a pedal manipulating element. SOLUTION: This electronic musical instrument has the pedal manipulating element which can be manipulated within a prescribed range of manipulation variable, an instructing means which instructs for the formation and formation stop of the musical tones, a musical tone forming means which forms the musical tones according to the instructing means described above and a control means which controls the sound volume of the musical tones formed by the musical tone forming means according to the manipulated variable of the pedal manipulating element/and controls the musical tone forming means so as to form the musical tone of the first timbre according to the instruction of the instructing means when the manipulated variable of the pedal manipulating element is below the prescribed value and controls the musical tone forming means so as to form the musical tone of the second timbre different from the first timbre together with the musical tone of the first timbre according to the instruction of the instructing means when the manipulated variable of the pedal manipulating element changes from the prescribed value or below to the prescribed value or above.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an electronic musical instrument,
More specifically, the present invention relates to an electronic musical instrument whose volume can be controlled by operating a pedal operator such as a foot pedal.

[0002]

2. Description of the Related Art Conventionally, a key operation of a keyboard is performed by operating a pedal operator such as a foot pedal provided on a main body of an electronic musical instrument or a pedal operator such as a foot pedal connectable to the main body of an electronic musical instrument. There has been known an electronic musical instrument capable of controlling the volume of a musical tone having a pitch corresponding to the key that has been pressed and generated in response to the key.

In such an electronic musical instrument, the volume of a tone of a predetermined tone is changed in accordance with the amount of operation of a pedal operator, that is, the amount of depression of the pedal operator.
2. Description of the Related Art In an electronic musical instrument having a function of simultaneously generating musical tones of different types (so-called dual performance function), the volume balance of two predetermined types of tones is adjusted according to the amount of depression of a pedal operator. It has been made to bring musically rich expressiveness.

However, in the above-described simple volume adjustment of one tone and the adjustment of the volume balance of two tones, for example, a tone of a certain tone is changed from a mezzo piano to a forte in accordance with the depression amount of a pedal operator. To play the same instrument, play from the dark to the bright tone of the same instrument, or increase the volume of another tone along with the current tone while stepping on the pedal operator to excite the performance There is a problem that such effects cannot be obtained.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to control the operation amount of a pedal operator. An object of the present invention is to provide an electronic musical instrument capable of increasing the number of tones that are simultaneously sounded.

[0006]

In order to achieve the above object, according to the present invention, a pedal operator operable within an operation range of a predetermined operation amount, a musical sound generation and Instructing means for instructing generation stop, tone generating means for generating a tone in response to the instructing means, and controlling the volume of the tone generated by the tone generating means in accordance with the operation amount of the pedal operator, When the operation amount of the pedal operator is less than a predetermined value, the tone generator is controlled to generate a tone of the first timbre in accordance with the instruction of the instruction means, and the operation amount of the pedal operator is controlled. Is changed from less than the predetermined value to not less than the predetermined value, the musical tone generating means responds to the instruction of the instruction means together with the musical tone of the first timbre and a second tone different from the first timbre. To generate the tone of the tone It is obtained as a control means for controlling.

Therefore, according to the first aspect of the present invention, when the operation amount of the pedal operator changes from less than the predetermined value to more than the predetermined value, the musical tone of the first timbre is produced together with the musical tone of the first timbre. As a result, the tone of the second tone is generated, and the number of tones simultaneously sounded is increased according to the operation amount of the pedal operator.

According to a second aspect of the present invention, there is provided a keyboard for instructing the generation of musical tones by a key-depressing operation and for instructing the silencing of musical tones by a key-release operation, and an operation range of a predetermined operation amount. Operable pedal operator, sounding means for generating a tone based on the assigned tone parameter, tone parameters of a plurality of tone colors as a first tone color, and tone parameter parameters of a plurality of tone colors as a second tone color. And a timbre table in which a plurality of timbres as the first timbre and a plurality of timbres as the second timbre, the timbre parameters of which are stored in the timbre parameter storage means, are stored. A timbre table storing means, and any one of a plurality of timbres as the first timbre whose timbre parameters are stored in the timbre parameter storing means. The tone color selecting means to be selected, the tone color parameter of the tone selected as the first tone color by the tone color selecting means, and the first tone color selecting means obtained by referring to the tone color table stored in the tone color table storage means. Allocating means for allocating a timbre parameter of a timbre as a second timbre corresponding to a timbre selected as a timbre to the tone generating means in accordance with a key depression operation of the keyboard and an operation amount of the pedal operator. When the operation amount of the pedal operator is less than a predetermined value, only the tone parameter of the tone selected as the first tone is assigned to the sounding means, and the operation amount of the pedal operator is set to a predetermined value. Is greater than or equal to the value of timbre, the timbre parameter of the timbre selected as the first timbre is assigned to the sounding means and the timbre of the timbre as the second timbre is assigned. And assigning means for assigning to said sound generating means the parameter in response to the operation amount of the pedal terminal, in which so as to have a volume control means for the sounding means controls the volume of the tone to be generated.

Therefore, according to the second aspect of the present invention, when the operation amount of the pedal operator is less than the predetermined value, only the musical tone of the first tone is generated, If the operation amount of the operating element is equal to or more than a predetermined value, the musical sound of the second timbre is generated together with the musical sound of the first timbre. The number is increased.

According to a third aspect of the present invention, there is provided a keyboard for instructing the generation of a musical tone by a key-depressing operation and for instructing the silencing of a musical tone by a key-releasing operation. Operable pedal operator, sounding means for generating a tone based on the assigned tone parameter, tone parameters of a plurality of tone colors as a first tone color, and tone parameter parameters of a plurality of tone colors as a second tone color. And a timbre table in which a plurality of timbres as the first timbre and a plurality of timbres as the second timbre, the timbre parameters of which are stored in the timbre parameter storage means, are stored. A timbre table storing means, and any one of a plurality of timbres as the first timbre whose timbre parameters are stored in the timbre parameter storing means. The tone color selecting means to be selected, the tone color parameter of the tone selected as the first tone color by the tone color selecting means, and the first tone color selecting means obtained by referring to the tone color table stored in the tone color table storage means. Allocating means for allocating a timbre parameter of a timbre as a second timbre corresponding to the timbre selected as the timbre to the tone generating means in accordance with a key depression operation of the keyboard, and according to an operation amount of the pedal operator Controlling the volume of the musical tone produced by the sounding means, and, if the operation amount of the pedal operator is less than a predetermined value, the sound quantity corresponding to the tone selected as the first tone by the tone color selecting means. And sound volume control means for setting the sound volume of the sound generating means to which the timbre parameter of the timbre as the second timbre to be assigned is set to zero.

Therefore, according to the third aspect of the present invention, when the operation amount of the pedal operator is less than the predetermined value, the sounding means to which the timbre parameter of the second timbre is assigned. Is set to 0, so that only the tone of the first tone is generated. However, if the operation amount of the pedal operator is equal to or more than a predetermined value, the tone of the second tone is also generated together with the tone of the first tone. Will be pronounced,
The number of tones that are simultaneously sounded is increased according to the operation amount of the pedal operator.

Here, the first timbre may be an attenuated timbre and the second timbre may be a continuous timbre, as in the fourth aspect of the present invention. And
Further, as in the invention according to claim 5 of the present invention, the first timbre is a tone when a predetermined musical instrument is played with a weak sound, and the second timbre is a strong tone when the predetermined musical instrument is strong. It may be a tone when playing with sound.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an electronic musical instrument according to the present invention will be described in detail with reference to the accompanying drawings.

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

This electronic musical instrument is configured to control its entire operation using a central processing unit (CPU) 10. The CPU 10 executes a program stored in a read-only memory (ROM) 14 to be described later, processes a main routine shown in a flowchart of FIG. 4 described later, and generates a tone as a subroutine of the main routine shown in a flowchart of FIG. Processing, detection processing of the setting state of the setting means 18 (described later) or detection processing of the operation state of the keyboard 20 (described later) and the pedal operator 22 (described later) is performed.

The CPU 10 is connected to a ROM 14 and a random access memory (R) via a bus (BUS) 12.
AM) 16, a setting means 18, a keyboard 20, a pedal operator 22, and a sound source 24 are connected.

Here, in the ROM 14, the CPU 10 allows the CPU 10 to execute the main routine shown in the flowchart of FIG. 4 and the subroutine of the main routine shown in the flowchart of FIG. A tone table (FIG. 2) which stores a program for executing processing for detecting a depression operation of the pedal operator 22 and a plurality of tone colors A as a first tone color and a plurality of tone colors B as a second tone color. And a plurality of tone colors A and a plurality of tone colors B stored in the tone color table.

The RAM 16 is a working memory in which various buffers and registers necessary for the CPU 10 to execute a program are set.

The setting means 18 is composed of operators for selecting a desired tone color A from a tone color table stored in the ROM 14.

The keyboard 20 is used by a user to perform a key press operation / key release operation of a desired key, thereby instructing sounding / muting of a musical tone having a pitch corresponding to the key press / released key. It is a performance operator.

The pedal operator 22 comprises a foot pedal or the like that can be depressed by a user within an operation range of a predetermined operation amount.

In response to an instruction from the CPU 10, the sound source 24 generates / stops generating a tone signal corresponding to a tone having a pitch instructed to sound / mute by a key pressing operation / key releasing operation of the keyboard 20.

Here, the sound source 24 comprises control means, sound generating means and volume adjusting means. A predetermined number of sounding means are provided, sounding means are assigned to the tone by a number necessary to sound one tone, tone parameters of the tone are set to the assigned sounding means, and the assigned sounding means is assigned. In response to the sounding instruction to the sounding means, the assigned sounding means generates a tone signal of the timbre.

The assignment of the tone color to the sounding means, the sounding instruction, and the sound volume adjusting instruction to the sound volume adjusting means are performed by the CP.
The control unit performs the operation in response to an instruction from U10, and the control unit knows which tone is assigned to which sounding unit.

The tone volume adjusting means assigns tone A to the tone signal generated by the tone generating means used for tone tone A and tone tone B assigned to tone B in response to an instruction from the control means. Adjusts the volume with the tone signal generated by the sounding means used for sounding.

Since the above-described sound source 24 can be formed by using a known technique, a detailed description of its structure and operation will be omitted.

The sound source 24 is connected to an amplifier (AMP) 26 for amplifying a tone signal generated by the tone source 24. Further, the AMP 26 has a tone which can hear the tone signal amplified by the AMP 26. A speaker 28 for emitting sound to the space is connected.

FIG. 2 graphically shows a tone color table stored in the ROM 14, in which tone color A as the first tone color and tone color B as the second tone color are associated with each other. . Specifically, for example, “tones”, which is a sustained tone, are associated with “piano”, which is an attenuated tone, as tone A, and “flute”, which is a tone A, is sustained. "Flute mp (mezzo piano)" which is the tone of the weak tone of "" is associated with "Flute ff (fortessimo)" which is the tone of the strong tone of "flute" as the tone color B.

As will be described later with reference to the flow charts of FIGS. 4 and 5, when a desired tone color is selected as the tone color A by the setting means 18, the tone corresponding to the desired tone color selected as the tone color A is selected. The timbre B to be played is automatically selected. Therefore, for example, when “brass mp (mezzo piano)” is selected as the tone color A by the setting unit 18, “brass ff (fortissimo)” is automatically selected as the tone color B.

In this electronic musical instrument, tone A is a tone that is emitted regardless of the operation amount of the pedal operator 22, and tone B is when the pedal operator 22 is depressed by a predetermined operation amount or more. This is the tone that is pronounced along with tone A.

FIG. 3 shows the volume characteristics of the timbre A and the timbre B with respect to the operation amount of the pedal operator 22. The horizontal axis represents the operation amount pv of the pedal operator 22, and the vertical axis represents the operation amount. The volume Vol corresponding to pv is taken. Symbol P is a value of the reference operation amount of the pedal operator 22. In this electronic musical instrument, the reference operation amount value P is a predetermined value, for example, a value when the pedal operator 22 is depressed to an intermediate position in the entire operation range (an intermediate value between the minimum value MIN and the maximum value MAX). Is set to

In FIG. 3, a change in the volume VolA of the timbre A with respect to a change in the operation amount pv of the pedal operator 22 is indicated by a solid line. The volume VolA of the timbre A is obtained by multiplying the operation amount pv by a constant Ka as shown in Expression (1).

VolA = pv × Ka (1) Similarly, in FIG. 3, the operation amount p of the pedal operator 22 is shown in FIG.
The change of the volume VolB of the timbre B with respect to the change of v is indicated by a broken line. The volume VolB of this timbre B is given by the equation (2)
As shown in (2), when “operation amount pv ≧ reference operation amount value P”, a value obtained by subtracting the reference operation amount value P from the operation amount pv is multiplied by a constant Kb.

VolB = (pv−P) × Kb Expression (2) (where pv ≧ P) When “operation amount pv <reference operation amount value P”, “Volume of sound color B VolB = 0 ".

The above constants Ka and Kb may be fixedly set in advance, or may be arbitrarily set by the user.

In this electronic musical instrument, as shown in FIG. 3, the keyboard 20 is depressed and the tone A is assigned to the tone generator of the sound source 24, and the tone parameters of the tone A are set in the tone generator. If the pedal operator 22 is depressed and the operation amount pv of the pedal operator 22 increases while the tone generation unit is generating a musical tone of tone A (the value of the operation amount pv becomes the reference operation amount value P ), The tone of the tone A increases in volume according to the volume characteristic indicated by the solid line in FIG. Further, when the pedal operator 22 is depressed and the operation amount p
When the value of v increases and the value of the operation amount pv becomes equal to or more than the reference operation amount value P, the timbre B is assigned to the tone generator of the sound source 24 in accordance with the key depression operation of the keyboard 20, and the timbre B is assigned to the tone generator.
Is set, that is, the voice is assigned, and the timbre B has a volume characteristic different from that of the timbre A.
The volume of the musical tone changes.

When the tone B is assigned to the tone generator of the sound source 24 and the tone parameter of the tone B is set in the tone generator, the operation amount pv of the pedal operator 22 becomes smaller than the reference operation amount value P. Then, the assignment of the timbre B to the sound generating means of the sound source 24 is released.

Next, the processing of the main routine in the electronic musical instrument will be described with reference to the flowchart shown in FIG. The CPU 10 monitors whether the setting means 18 has performed the selection operation of the tone A, whether the keyboard 20 has been pressed / released, and whether or not the pedal operator 22 has been depressed. I have.

That is, the electronic musical instrument performs the processing of S402 when the power is turned on, and thereafter repeatedly executes the processing of S404 to S420 until the power is turned off.

First, in the process of S402, the keyboard 2
It initializes Kon, which is a flag indicating whether 0 has been pressed, to 0. Note that Kon, which is a flag indicating whether or not a key pressing operation has been performed, is set for each key constituting the keyboard 20, but the description is simplified in this specification to facilitate understanding of the invention. In this case, it is also assumed that it simply indicates which key of the keyboard 20 has been depressed by Kon.

When the above-described initialization processing is completed, S4
04 to S420 are repeatedly executed. First, it is determined whether or not the selecting operation of the tone A is performed by the setting unit 18 (S404), and it is determined that the selecting operation of the tone A is performed. In this case, the control unit of the sound source 24 is instructed to set the selected tone color A (S406).

Next, it is determined whether any of the keys constituting the keyboard 20 has been operated (S408). If it is determined that any of the keys constituting the keyboard 20 has been operated, the operation is determined. Is a key-pressing operation or not (S
410).

Here, when it is determined that the operation of the keys constituting the keyboard 20 is a key pressing operation, 1 is set to Kon corresponding to the key that has been pressed (S412).
If it is determined that the operation of the key forming the keyboard 20 is not a key pressing operation, that is, if it is determined that the operation of the key configuring the keyboard 20 is a key releasing operation, the key that has been subjected to the key releasing operation is determined. The corresponding Kon is cleared to 0 (S414).

Next, it is determined whether or not the pedal operator 22 has been depressed (S416). If it is determined that the pedal operator 22 has been depressed, the operation amount pv of the pedal operator 22 is set. (S418).

Then, after the above-described series of detection processing and the setting processing accompanying the detection processing, a tone generation processing is performed (S420). For details of this tone generation process,
The subroutine of this main routine will be described below with reference to the flowchart shown in FIG.

In the musical tone generation processing shown in the flowchart of FIG. 5, when the keyboard 20 is depressed, S502 to S5
30 is executed, and at the time of a key release operation of the keyboard 20, S53 is executed.
2 to S536 are executed. Note that this tone generation processing is performed on all keys constituting the keyboard 20, and when the processing on all keys is completed, the process returns to the main routine.

That is, in this tone generation processing, it is first determined whether or not Kon is set to 1 (S
502) If Kon is set to 1, that is, if it is determined that the key on the keyboard 20 is in the pressed state, then Ko is determined.
It is determined whether or not n is set from 0 to 1, that is, the key is changed from the key release state to the key pressed state (S5).
04).

Here, if it is determined that Kon is set from 0 to 1, there is a key pressing operation on the keys constituting the keyboard 20, and the current tone generation processing is performed in this case. Since the tone generation process is performed immediately after the key depression operation, the control unit of the sound source 24 is instructed to assign the timbre A to the sound generation unit (S506). A sounding instruction is issued to the sounding means to which A is assigned (S508), and then the process proceeds to S510.

On the other hand, when it is not determined that Kon is set from 0 to 1, a key pressing operation is performed on the keys constituting the keyboard 20, and the current tone generation processing is performed. This is the case where the tone generation process is not the tone generation process immediately after the key depression operation, and the instruction for assigning the tone color A to the tone generation unit and the tone generation instruction have already been issued to the control unit of the sound source 24. The process proceeds to S510 without performing.

In the process of S510, the timbre A is obtained by multiplying the pedal operation amount pv of the pedal operator 22 by a constant Ka.
Is calculated. Then, the value of the volume VolA is instructed to the control means of the sound source 24 as the volume of the tone A (S512).

Next, it is determined whether or not the current pedal operation amount pv of the pedal operator 22 is equal to or greater than the reference operation amount value P (S514). The pedal operation amount pv is equal to or greater than the reference operation amount value P. If it is determined that the pedal operation amount pv is smaller than the reference operation amount value P, the processing of S526 to S530 is performed.

First, in the process of S516, the sound source 2
It is determined whether tone color B has already been assigned to the tone generator 4. Here, when it is determined that the timbre B has not been assigned to the sound source 24, that is, the current tone generation process is performed immediately after the operation amount pv of the pedal operator 22 becomes equal to or more than the reference operation amount value P. In some cases, the control unit of the sound source 24 is instructed to allocate the tone B to the sound generating unit (S518), and further, the control unit of the sound source 24 is directed to the sound generating unit to which the tone B is allocated. (S520), and then the process proceeds to S522.

On the other hand, in the process of S516, the sound source 24
If it is determined that the tone color B has already been assigned, the processing proceeds to S522 without performing any processing.

In the process of S522, a value obtained by subtracting the reference operation amount P from the pedal operation amount pv of the pedal operator 22 is multiplied by a constant Kb to calculate the value of the volume VolB of the timbre B. Then, the value of the volume VolB is instructed to the control means of the sound source 24 as the volume of the tone B (S52).
4) The process proceeds to S538.

Next, in the processing of S514, when it is determined that the pedal operation amount pv is smaller than the reference operation amount value P, it is determined whether or not the timbre B has been assigned to the sound generating means of the sound source 24. Is determined (S526). Here, when it is determined that the tone B has been assigned to the sound source 24, that is, the process immediately after the operation amount pv of the pedal operator 22 becomes less than the reference operation amount value P in the current tone generation process. If so, the control section of the sound source 24 is instructed to mute the sound generating section to which the tone B is assigned (S528).

Further, the control unit of the sound source 24 is instructed to cancel the assignment of the tone B to the sound generating unit (S53).
0), and then the process proceeds to S538.

On the other hand, in the processing of S526, the sound source 24
If it is determined that the tone color B has not been assigned to, the process proceeds to S538 without performing any process.

If it is not determined in step S502 that Kon is set to 1, that is, if Kon is not set,
Is cleared to 0, it is determined whether Kon is cleared from 1 to 0 (S53).
2).

Here, if it is determined that Kon has been cleared from 1 to 0, a key release operation has been performed on the keys constituting the keyboard 20, and the current tone generation processing is performed in Since the tone generation process is performed immediately after the key release operation, the control unit of the sound source 24 is instructed to mute the tone generation unit to which the tone A and the tone B are assigned (S53).
4).

Further, the control unit of the sound source 24 is instructed to cancel the assignment of the timbres A and B to the tone generator (S536), and the process proceeds to S538.

On the other hand, in the process of S532, if it is not determined that Kon has been cleared from 1 to 0, a key release operation has been performed on the keys constituting the keyboard 20 and this time Is not the case of the tone generation processing immediately after the key release operation, but the control means of the sound source 24 has already been instructed to mute the tone colors A and B to the tone generation means and to cancel the assignment. Therefore, the process directly proceeds to S538.

In the processing of S538, S502 to S536 are executed for all keys constituting the keyboard 20.
It is determined whether or not the processing of S5 has been performed. Until the processing of S502 to S536 is performed on all the keys of the keyboard 20, the processing of S5 is performed for each key of the keyboard 20.
02 to S536 are performed. When the processing of S502 to S536 has been performed for all the keys constituting the keyboard 20, the subroutine of the musical sound generation processing is terminated, and the process returns to the main routine.

In the sound source 24, the CP
The sounding instruction sent from the CPU 10 by the processing of U,
In response to the mute instruction, the tone color assignment instruction, the tone color assignment release instruction, the volume setting instruction, and the tone color A setting instruction from the setting means 18, the control means performs processing corresponding to each instruction. That is, when a sounding instruction is received, the sounding means is caused to generate a musical tone of the designated tone color. Further, when the mute instruction is received, the sound generator is made to mute the tone of the designated timbre. When a tone color assignment instruction is received, tone generators are assigned by the number of sounds corresponding to the designated tone (tone A or tone A and tone B), and which tone is assigned to which tone generator to the volume adjuster. Indicate
The sounding means and the volume adjusting means are associated. Further, when receiving the tone color assignment canceling instruction, the tone color currently assigned to the sounding means is cancelled, and the relationship between the sounding means and the volume adjusting means is cleared.
Further, when receiving the volume setting instruction, the volume setting unit sets the volume VolA and the volume VolB to the volume adjusting unit. Further, when receiving the setting instruction of the tone color A by the setting means 18, the tone color A selected by the setting means 18 and the corresponding tone color B are set in the control means with reference to the tone color table.

By the way, in the embodiment shown in the flowchart of FIG. 5, until the operation amount pv of the pedal operator 22 becomes equal to or more than the reference operation amount value P, even if the keyboard 20 is depressed, the tone B Is not assigned to the tone generator of the sound source 24, so that the number of tone generators can be saved.

However, it is needless to say that the processing is not limited to such processing. For example, the tone A and the tone B are assigned to the tone generating means of the sound source 24 in response to the key depression operation of the keyboard 20, and for the tone of the tone B, the operation amount pv of the pedal operator 22 is changed to the reference operation amount value P Until the above, the volume may be set to 0.

In the flowchart of FIG. 6, the tone A and the tone B are assigned to the tone generator of the sound source 24 in accordance with the key depression operation of the keyboard 20, but the tone p of the tone B is manipulated by the operation amount pv of the pedal operator 22. FIG. 1 shows an embodiment of a musical sound generation process in which the volume is set to 0 until the value becomes equal to or more than the reference operation amount value P.

In the musical tone generation process shown in the flowchart of FIG. 6, when the keyboard 20 is depressed, S602 through S6
24, and S61 when the keyboard 20 is released.
8 to S622 are executed. Note that this tone generation processing is performed for all keys constituting the keyboard 20, and when the processing for all keys is completed, the process returns to the main routine shown in FIG.

That is, in this tone generation processing, it is first determined whether or not Kon is set to 1 (S
602) If Kon is set to 1, that is, if it is determined that the key on the keyboard 20 is in the depressed state, then Ko is determined.
It is determined whether or not n has been set from 0 to 1, that is, whether the key has changed from the key release state to the key pressed state (S6).
04).

Here, if it is determined that Kon is set from 0 to 1, a key depressing operation is performed on a key constituting the keyboard 20, and the current tone generation processing is performed in this case. Since the tone generation process is performed immediately after the key depression operation, the control unit of the sound source 24 is instructed to assign the tone A and the tone B to the tone generator (S606).
Further, the control unit of the sound source 24 issues a sound generation instruction to the sound generation unit to which the timbres A and B are assigned (S60).
8) Then, the process proceeds to S610.

On the other hand, if it is not determined that Kon is set from 0 to 1, a key depressing operation is performed on the keys constituting the keyboard 20, and the current tone generation processing is performed. This is a case where the tone generation process is not the tone generation process immediately after the key depression operation, and the instruction for assigning the tone A and the tone B to the tone generator and the tone generation instruction have already been issued to the control unit of the sound source 24. The process proceeds to S610 without performing the process of.

In the process of S610, it is determined whether or not the current pedal operation amount pv of the pedal operator 22 is equal to or greater than the reference operation amount value P. If the pedal operation amount pv is equal to or greater than the reference operation amount value P, it is determined. If determined, S612 → S616
When it is determined that the pedal operation amount pv is smaller than the reference operation amount value P, the processing of S614 → S616 is performed.

In the process of S612, the value of the volume VolA of the timbre A is calculated by multiplying the pedal operation amount pv of the pedal operator 22 by a constant Ka.
The value of the volume VolB of the timbre B is calculated by multiplying a value obtained by subtracting the reference operation amount value P from the pedal operation amount pv of No. 2 by a constant Kb. Then, for the control means of the sound source 24, the tone A
The value of the volume VolA is specified as the volume of the tone color B, and the value of the volume VolB is specified as the volume of the tone color B (S61).
6) The process proceeds to S624.

On the other hand, in the process of S614, the value of the volume VolA of the timbre A is calculated by multiplying the pedal operation amount pv of the pedal operator 22 by the constant Ka, and the value of the volume VolB of the timbre B is set to 0. . Then, to the control means of the sound source 24, the value of the volume VolA is instructed as the volume of the tone A, and the volume 0 is instructed as the volume of the tone B (S616), and the process proceeds to S624.

If it is not determined in S602 that Kon is set to 1, that is, if Kon is not set,
Is cleared to 0, it is determined whether Kon is cleared from 1 to 0 (S61).
8).

Here, if it is determined that Kon has been cleared from 1 to 0, a key release operation has been performed on the keys constituting the keyboard 20, and the current tone generation processing is not performed. Since the tone generation process is performed immediately after the key release operation, the control unit of the sound source 24 is instructed to silence the tone generation unit to which the tone A and the tone B are assigned (S62).
0).

Further, the control unit of the sound source 24 is instructed to cancel the assignment of the timbre A and the timbre B to the tone generator (S622), and then the process proceeds to S624.

On the other hand, if it is not determined in step S618 that Kon has been cleared from 1 to 0, a key release operation has been performed on the keys constituting the keyboard 20 and this time Is not the case of the tone generation processing immediately after the key release operation, but the control means of the sound source 24 has already been instructed to mute the tone colors A and B to the tone generation means and to cancel the assignment. Therefore, the process directly proceeds to S624.

Then, in the process of S624, all keys constituting the keyboard 20 are subjected to S602 to S622.
It is determined whether or not the processing of S6 has been performed. Until the processing of S602 to S622 is performed on all the keys of the keyboard 20, the processing of S6 is performed on each key of the keyboard 20.
02 to S622 are performed. When the processing from S602 to S622 has been performed for all keys constituting the keyboard 20, the subroutine of the musical sound generation processing is terminated, and the process returns to the main routine.

Therefore, according to the electronic musical instrument described above, with respect to the timbres of the same musical instrument, the timbre A is the tone of a weak tone (the tone when the instrument is played with a weak tone), and the timbre B is the tone of the strong tone (the tone of the instrument is strong). Tones when playing with sound)
By pressing and depressing the pedal operator 22 while playing a weak key (tone color A) by playing the key with a weak key touch, the sound can be changed to a strong sound (tone color B). For example, the timbre A is a flute weak tone (“flute mp” in the tone table), and the timbre B is a flute strong tone (“flute f” in the tone table).
f ”. ), As the pedal operator 22 is depressed, the sound to be emitted is mixed with the sound of breath included in the strong sound, and the expressive power of the performance can be improved.

Further, regarding the timbre of the same musical instrument, the timbre A
When the pitch relationship between the tone and the timbre B is given an octave difference, the octave relationship becomes "timbre A> tone B" (tone A: bass 8 feet, tone B: bass 16 feet in FIG. 2).
In the case of, when the pedal operator 22 is depressed, the tone changes to a heavy tone. When the octave relationship is "tone A <tone B", the pedal operator 22 is depressed. It is possible to obtain an effect that the tone changes to a glittering tone.

When the tone color A and the tone color B are set to the tone colors of different musical instruments, a layer effect can be obtained according to the operation amount pv of the pedal operator 22. At this time, it is effective to set a sustained tone color as the tone color B. For example, it is effective to set the tone color A to "piano" and the tone color B to "strings".

Further, in this electronic musical instrument, when the operation amount pv of the pedal operator 22 becomes equal to or more than the reference operation amount value P, the musical tone of the timbre B is generated, and the volume is increased together with the musical tone of the timbre A. , The volume of the overall sound increases, resulting in a larger dynamic range,
You will be able to expand the range of performance expressions.

The above-described embodiment may be modified as shown in the following (1) to (7).

(1) In the above-described embodiment, the volume VolA of the tone A and the volume VolB of the tone B linearly change with respect to the operation amount pv of the pedal operator 22 (see FIG. 3), but it is needless to say that the volume VolA of the tone A and the volume VolB of the tone B may be changed nonlinearly with respect to the operation amount pv of the pedal operator 22. .

(2) In the above embodiment, the volume VolA of the timbre A and the volume VolB of the timbre B were calculated by using mathematical expressions. However, it is needless to say that the present invention is not limited to this. Operation amount p of operation element 22
volume A of tone A and volume Vol of tone B with respect to v
The relationship with B may be stored as a table, and the volume VolA of the timbre A and the volume VolB of the timbre B may be determined with reference to this table.

(3) In the above embodiment, only the relationship between the two timbres, timbre A and timbre B, has been described, but it is needless to say that the present invention is not limited to this.
The number of tones is not limited to two, and may be two or more. At this time, the reference operation amount value P of the pedal operator 22 is not limited to one, and a plurality of reference operation amount values may be set.

(4) In the above-described embodiment, the reference operation amount value P of the pedal operator 22 is fixed. However, it is needless to say that the reference operation amount value P is not limited to this. For example, the setting unit 18 may be able to arbitrarily change the setting.

(5) In the above-described embodiment, the timbre A and the timbre B have the volume characteristics as shown in FIG. 3 regardless of the combination of the timbres. However, the present invention is not limited to this. Of course, tone A and tone B
The volume characteristics may be varied according to the characteristics of the combination of the tone colors.

(6) In the above embodiment, the combination of the tone color A and the tone color B in the tone color table is set in advance, but it is needless to say that the combination is not limited to this. The user may arbitrarily set the combination of the tone colors A and B.

(7) The above-described embodiments and the modifications shown in (1) to (6) above may be appropriately combined.

[0091]

Since the present invention is constructed as described above, it has an excellent effect that the number of tones to be simultaneously sounded can be increased in accordance with the operation amount of the pedal operator. Play.

[Brief description of the drawings]

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

FIG. 2 is an explanatory diagram schematically showing a tone color table stored in a ROM.

FIG. 3 shows a tone A and a tone B with respect to an operation amount of a pedal operator.
FIG. 9 is a characteristic diagram showing a change in sound volume.

FIG. 4 is a flowchart showing a main routine.

FIG. 5 is a flowchart showing a tone generation process which is a subroutine of a main routine.

FIG. 6 is a flowchart showing another embodiment of a musical sound generation process as a subroutine of a main routine.

[Explanation of symbols]

 Reference Signs List 10 central processing unit (CPU) 12 bus (BUS) 14 read-only memory (ROM) 16 random access memory (RAM) 18 setting means 20 keyboard 22 pedal operator 24 sound source 26 amplifier (AMP) 28 speaker

Claims (5)

[Claims] 1. A pedal operator operable within an operation range of a predetermined operation amount, an instruction unit for instructing generation and stop of generation of a musical sound, a musical sound generation unit for generating a musical sound in response to the instruction unit, The tone volume generated by the tone generator is controlled in accordance with the operation amount of a pedal operator, and when the operation amount of the pedal operator is less than a predetermined value, the tone generator is controlled by the instruction unit. In response to the instruction, control is performed to generate a musical tone of the first tone, and when the operation amount of the pedal operator changes from less than the predetermined value to more than the predetermined value, the musical sound generation means An electronic musical instrument having control means for performing control so as to generate a musical tone of a second timbre different from the first timbre together with a musical tone of the first timbre in accordance with an instruction of an instruction means. 2. A keyboard for instructing the generation of a musical tone by a key-depressing operation and for instructing the silencing of a musical tone by a key-release operation, a pedal operator operable within an operation range of a predetermined operation amount, and assigned tone color parameters. Sounding means for generating a musical tone based on the timbre, timbre parameters of a plurality of timbres as the first timbre, and a second
Timbre parameter storage means for storing timbre parameters of a plurality of timbres as the timbres, and a plurality of timbres as a first timbre and a plurality of timbres as a second timbre in which the timbre parameters are stored in the timbre parameter storage means. A timbre table storing means for storing a timbre table in which timbres are respectively associated with each other; and a timbre for selecting any timbre from a plurality of timbres as a first timbre in which timbre parameters are stored in the timbre parameter storing means. Selecting means; a timbre parameter of the timbre selected as the first timbre by the timbre selecting means; and a timbre selecting means obtained by referring to the timbre table stored in the timbre table storage means as the first timbre. The timbre parameters of the timbre as the second timbre corresponding to the selected timbre are stored in the key depression operation and the pedal operation. Allocating means for allocating to the sound generating means in accordance with the operation amount of the child, wherein when the operation amount of the pedal operator is less than a predetermined value, the timbre parameter of the timbre selected as the first timbre Only to the sounding means, and when the operation amount of the pedal operator is equal to or more than a predetermined value, the tone parameter of the tone selected as the first tone is assigned to the sounding means, and An electronic musical instrument comprising: allocating means for assigning a timbre parameter of a timbre as a timbre to the sounding means; and volume control means for controlling a volume of a musical tone generated by the sounding means in accordance with an operation amount of the pedal operator. 3. A keyboard for instructing the generation of a musical tone by a key-depressing operation and for instructing the mute of a musical tone by a key-release operation, a pedal operator operable within an operation range of a predetermined operation amount, and assigned tone color parameters. Sounding means for generating a musical tone based on the timbre, a timbre parameter of a plurality of timbres as a first timbre, and a second
A timbre parameter storage unit for storing timbre parameters of a plurality of timbres as the timbres of the plurality of timbres; A timbre table storing means for storing a timbre table in which timbres are respectively associated with each other; and a timbre for selecting any timbre from a plurality of timbres as a first timbre in which timbre parameters are stored in the timbre parameter storing means. Selecting means; a timbre parameter of the timbre selected as the first timbre by the timbre selecting means; and a timbre selecting means obtained by referring to the timbre table stored in the timbre table storage means as the first timbre. The timbre parameter of the timbre as the second timbre corresponding to the selected timbre is transmitted in response to the key depression operation of the keyboard. Assigning means assigned to the means, and controlling the volume of a musical tone generated by the sounding means according to the operation amount of the pedal operator, and when the operation amount of the pedal operator is less than a predetermined value, An electronic musical instrument comprising: a sound volume control unit that sets a volume of a sound generation unit to which a timbre parameter of a timbre as a second timbre corresponding to a timbre selected as a first timbre by the timbre selection unit is set to zero. 4. The electronic musical instrument according to claim 1, wherein the first timbre is an attenuated tone, and the second timbre is a continuous tone. An electronic musical instrument that is a system sound. 5. The electronic musical instrument according to claim 1, wherein the first timbre is a timbre when a predetermined musical instrument is played with a weak sound. An electronic musical instrument is a tone color when the predetermined musical instrument is played with a strong tone.