JPH0778675B2 - Electronic musical instrument - Google Patents

Description

The present invention relates to an electronic musical instrument, and more particularly to an electronic musical instrument in which a single pitch bend operator can be used to impart a pitch bend effect to a plurality of musical tones.

[Outline of Invention]

According to the present invention, in an electronic musical instrument capable of simultaneously generating a plurality of series of musical tone signals, the pitches of the musical tone signals of the respective series are variably controlled at the same time by a single pitch control operator unit, so that the performance is not hindered. It is possible to simultaneously generate multiple series of musical tones with the pitch bend effect by a simple operation, and the variable range of pitches can be changed for each series when the pitch of the musical tone signal of each series is variably controlled by the pitch control operator means. By independently setting each tone, it is possible to add a different pitch bend effect to each tone of each tone and to enrich the musical expression effect.

[Conventional technology]

As is conventionally known, in an electronic musical instrument such as a synthesizer synthesizer, a pitch (frequency) of a musical sound is generated by operating a pitch bend operator from a reference point to a plus side or a minus side with a key pressed. There is a device having a pitch bend device that changes the pitch corresponding to the pitch up and down to obtain a pitch bend effect to enrich the musical effect.

In addition, the operator can easily set the variable range of the pitch (hereinafter referred to as the variable width of the pitch) with respect to the operable range of the pitch bend operator so that the performer can easily achieve the desired pitch bend effect. There is one that I have tried to obtain (Japanese Utility Model Publication No. 59-13656).

[Problems to be solved by the invention]

By the way, when a pitch bend effect is applied, one hand is used to operate the pitch bend operator, so that a musical tone signal generation sequence (hereinafter, referred to as a sound group) is conventionally one electronic musical instrument such as a MIDI synthesizer. The Pitchbend device was provided only for.

However, it is desirable to provide a pitch bend device for an electronic musical instrument having a plurality of sound groups in order to enrich the musical expression of the electronic musical instrument having a plurality of sound groups and increase the degree of freedom of the player's performance.

Therefore, it is conceivable to apply the pitch bend effect to each sound group using a conventional device. But,
If it is applied as it is, a pitch bend device will be provided separately for each sound group, and it will be unavoidable that the electronic musical instrument will be large and complicated, and multiple pitch bend operators will be installed side by side. Then, there is a possibility that a situation may occur if the adjacent operator is operated. In addition, even if the performer operates the pitch bend operator in order to apply the pitch bend effect to a plurality of sound groups during the performance, it is difficult to operate properly because there are multiple operators to operate, which hinders the performance. May cause

The present invention has been made in consideration of the above points, and an electronic musical instrument capable of imparting a pitch bend effect to a plurality of sound groups independently and simultaneously by a simple operation without hindering performance. Is to provide.

[Means for solving problems]

In order to solve such a problem, in the present invention, a musical tone signal generating means for generating a plurality of series of musical tone signals, a single pitch control operator means, and a variable width setting means for setting a variable width An operator unit and a variable width setting unit for arbitrarily setting the variable width of the pitch independently in semitone units for each of the sequences, and responding to the operation of the operator unit for setting the variable width. That the upper and lower limits of the pitch changeable width are interlocked with each other, and the pitch control operator means within the range of the pitch changeable width set by the changeable width setting means for each series. And pitch control data forming means for forming and outputting pitch control data that changes in accordance with the operation of, and the tone signal generating means includes each series formed by the pitch control data forming means. And so as to generate a musical tone signal of said each sequence of varying pitch based on the pitch control data with.

[Action]

Prior to the performance, the changeable width setting means sets the changeable width of the pitch for each series in semitone units. At this time, the upper limit and the lower limit of the changeable width of the pitch are increased or decreased in response to the operation of the changeable width setting operation means.

When the pitch control operation means is operated during the performance of the electronic musical instrument, the pitch control data forming means causes the pitch control data forming means within each range of the pitch changeable width set by the changeable width setting. The pitch control data that changes according to the operation of the pitch control operation means is output, and the pitch of the tone signal of each series generated from the tone signal generating means is controlled according to the pitch control data for each series. .

Thus, the pitch bend effect can be independently added to each series by operating the single pitch control operator means to the generated tone signals of each series.

〔Example〕

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

Configuration of Embodiment FIG. 1 shows an electronic musical instrument as a whole, and key information inputted from a keyboard circuit 4 composed of an upper keyboard circuit 1, a lower keyboard circuit 2 and a pedal keyboard circuit 3, and a panel operator circuit 5. The panel information and the pitch bend operator information input from the pitch bend operator unit 6 are sent to the central processing unit (CPU) 9 via the data bus 8 based on the program stored in the program memory area of the ROM 7. take in.

CPU9, based on the program of ROM7 these input information,
The RAM 10 connected via the bus 8 processes the data and supplies the resulting key data and parameter data to the tone generator 11. The tone generator 11 forms a musical tone signal corresponding to the key data and the parameter data and sends it to the sound system 12, so that the sound system 12 produces a predetermined musical tone.

Hereinafter, the configuration of each circuit will be described in detail. The tone generator 11 includes a tone signal generator 13 of a first tone group (hereinafter referred to as a UK tone group) that generates tone signals corresponding to each key pressed on the upper keyboard, and keys pressed on the upper keyboard. Of the second tone group (hereinafter, referred to as a solo tone group) that generates a tone signal corresponding to a single key selected based on a method of high temperature priority or late arrival priority, , A tone signal generator 1 of a third tone group (hereinafter referred to as LK tone group) for generating tone signals corresponding to the keys pressed on the lower keyboard
5, and a tone signal generator 16 of a fourth tone group (hereinafter referred to as PK tone group) that generates tone signals corresponding to the keys pressed on the pedal keyboard. Of these, the UK tone group, the solo tone group, and the PK tone group tone signal generators 13, 14, 16 respectively include pitch bend effect control circuits 17, 18, 19, and the predetermined pitch bend effect based on the pitch control data from the CPU 9. It is designed to be able to give.

Here, the musical tone signal of the solo tone group is also generated in response to the key operation of the upper keyboard in order to obtain the solo playing effect.

The pitch bend operator unit 6 includes a pitch bend wheel 20 shown in FIG. 2, and the player rotates the wheel 20 as shown by an arrow AL, so that the recess 21 formed in the cylindrical surface of the wheel 20 is depressed. The position data WHDATA corresponding to the position is given to the CPU 9 via the bus 8, and the CPU 9 receives this position data WH
Pitch control data representing the amount of pitch deviation with respect to a pitch (hereinafter referred to as a reference pitch) corresponding to the pitch of the key is obtained from DATA and the variable width data of the pitch which will be described later, and sent to the tone generator 11.

In addition, the pitch bend operator unit 6 selects selection switches 22, 23, 24 for selecting the pitch variable width data setting mode for setting the pitch variable width data and selecting the pitch bend effect mode for applying the pitch bend effect, as shown in FIG. As shown, it is provided for each UK sound group, solo sound group, and PK sound group to which the pitch bend effect should be added. Each selection switch 22, 23,
Reference numeral 24 is an automatic reset type push button switch, and the CPU 9 switches between the selected state and the released state of the mode each time the push of the switch is detected.

LED (light emi) corresponding to each selection switch 22, 23, 24
Selective display elements 25, 26, 27 having a tting diode configuration are provided, and the player can visually recognize the selected state of the mode by turning on or off the selective display elements 25, 26, 27.

As described above, the pitch bend wheel 20, the selection switch
In the present embodiment, the pitch bend operator unit 6 composed of 22 to 24 and the selective display elements 25 to 27 allows the left hand to easily operate the pitch bend wheel 20 without disturbing the right hand playing melody. For example, it is placed on the left side panel of the lower keyboard.

By the way, the lower keyboard is usually operated by the left hand of the player, and the lower keyboard often plays chords, and even if the Pitchbend effect is added to the chord tone signal, the musical effect is not enhanced, and Therefore, it is considered that the pitch bend wheel 20 is often operated with the left hand. Therefore,
As described above, the pitch bend operation section 6 is arranged on the left side panel of the lower keyboard so that the left hand is easy to operate and the right hand playing operation is not disturbed.

The panel operator circuit 5 has a large number of panel operators for setting or selecting various parameters of a musical sound or various functions of an electronic musical instrument, and a tone color selecting section 30, a parameter setting mode selecting section 31, and other operator sections. 32, a power switch 33, and a parameter setting unit 34.

The tone color selection unit 30 has a plurality of tone color designation switches for designating and inputting tone colors of, for example, violin, organ, piano, etc. for each tone group of UK, solo, LK, PK, and a tone color designation switch for each tone group. The tone color of each tone group is specified by selecting. In this case, a display element for displaying the designated state is provided corresponding to each tone color designated switch, and the display element corresponding to the operated tone color designated switch is turned on.

The parameter setting mode selection unit 31 includes a parameter setting unit 34
The selector 31 has various selection and designation switches that allow the player to select the type of parameter to be set using
As parameters selected by, for example, parameters of attack, decay, sustain, release time and level of the envelope waveform that specifies the amplitude envelope of the musical sound signal, vibrato effect, tremolo effect, and symphonic chorus effect. Parameters such as the speed of modulation effect and depth are included. Here, the setting mode of the parameter (variable width of the pitch) relating to the pitch bend effect can be selected by operating the selection switches 22 to 24 in the pitch bend operation section 6 described above. The section 31 is not provided with a switch for selecting a parameter setting mode relating to the pitch bend effect.

As shown in FIG. 4, the parameter setting section 34 includes a display device 35 having a liquid crystal display configuration, an increase instruction switch 36 for instructing increase and decrease of the parameter value, and a decrease instruction switch 37. On the display device 35, as shown in FIG. 4, for example, names relating to the types of parameters to be set, such as “PITCH BEND” and “VIBRATE”, and specific parameter names and their values to be set or changed, for example, "SO
"LO PITCH = 03", "UK PITCH = 05", "PK PITCH = 12"
Etc. are displayed. Therefore, if the type name of the parameter and the parameter name are different, the screen configuration will be different. Since many screen configurations (menus) are displayed, the parameter setting unit 34 will be referred to as a multi-menu unit hereinafter.

The multi-menu unit 34, when any one of the selection switches 22, 23, 24 of the pitch bend operation unit 6 is pressed, sets the pitch bend effect parameter of the sound group corresponding to the pressed switch (multi-menu (No. 1)). (See Fig. 4)
Is displayed. In the case of this embodiment, the pitch bend effect can be applied to the UK sound group, the solo sound group, and the PK sound group among the above-mentioned four sound groups, and different pitches can be changed for these sound groups. The width can be set, and the degree of freedom of setting is extremely high. here,
The variable width (setting parameter) of the pitch of the solo sound group is displayed as "SOLO PITCH" on the display on the display device 35, and the variable width (setting parameter) of the UK sound group is displayed as "UK PITCH", The variable width (setting parameter) of the PK sound group is specified to be displayed as "PK PITCH". In this example, the pitch bend wheel
When 20 is rotated to the maximum in the front-back direction, the variable width of the pitch that changes can be set to any of 0, ± 1 semitone, ± 2 semitone ... ± 12 semitone, for example, "SOLD PITCH = 03 "
Shows that when the pitch bend wheel 20 is rotated to the maximum extent, the pitch of the tone signal of the solo sound group can change from the reference pitch by ± 3 semitones.

The increase instruction switch 36 and the decrease instruction switch 37 are for instructing to increase or decrease the set value of the parameter by one unit. To set the variable width of the pitch in the pitch bend effect, press the increase instruction switch 36 to set. Increasing the value by "1" means increasing the variable width (maximum variable range) of the pitch by ± semitones when the pitch bend wheel 20 is rotated to the maximum. Conversely, the decrease instruction switch 37 is set. Pressing down to decrease the set value "1" means decreasing the maximum variable range of the pitch by ± 1 semitone.

The RAM 10 is roughly divided into a register unit MAPB for storing various data for applying the pitch bend effect, a data from the tone color selection unit 30, data from the parameter setting mode selection unit 31, and other operators. The register unit MA stores data from the unit 32, data from the keyboard circuit 4, working data, and the like.

The register unit MAPB further inverts the logic level each time the selection switches 22, 23, 24 are turned on, and the logic "1" level indicates that the pitch variable width data setting mode and the pitch bend effect mode are selected. Pitchbend effect addition flags SPFLG, UKPFLG, PKPFLG for each note group indicating that the logical "0" level is released from these modes
When the register unit MA1 that stores the value and the multi-menu unit 34 are in the setting menu of the variable pitch of the pitch for the solo sound group, the UK sound group, or the PK sound group, respectively, take the logic "1" level and set the other parameters. Multi-menu selection flag MS that takes ethics "0" level when it is in the setting menu
FLG, MUKFLG, MPKFLG register unit MA2, Pitch variable width data SPDATA, UPDATA, PPDATA for the pitch, solo, UK, PK sound groups to be added, MA3 and Pitchbend wheel 20 Register part MA4 that stores the position data WHDATA of, and solo, UK, PK
Cent data SCENT, UKCENT: PKCENT that expresses the amount of pitch deviation that should be displaced from the reference pitch for a sound group as a cent value.
And a register unit MA5 for storing

The cent data SCENT: UKCENT: PKCENT is as shown in Fig. 6 for the cent data SCENT of the solo sound group.
It is determined according to the position data WHDATA of the pitch bend wheel 20 and the variable width data SPDATA of the pitch.

For example, when the variable width data SPDATA is "12", when the concave portion 21 of the pitch bend wheel 20 is positioned at the deepest side, the pitch is shifted by 12 semitones, that is, 1200 cents higher than the reference pitch, so that position is represented. Position data
WHDATA is associated with the cent data SCENT representing +1200 cents, and similarly, when the recess 21 is located on the most front side, the position data WHDATA at that time is also associated with the cent data SCENT representing -1200 cents. If the relationship between the position data WHDATA and the cent data SCENT when the concave portion 21 is located in the middle is made to correspond to each other in a proportional relationship, in that case, the relationship between them becomes as shown by the straight line L12 in FIG.

Similarly, when the variable width data SPDATA is "2", the innermost position of the recess 21 is associated with the cent data SCENT representing +200 cents, and the foremost position is associated with the cent data SCENT representing -200 cents, and the middle thereof. The positions can be associated with each other in a proportional relationship, and when associated with each other in a proportional relationship, the relationship is as shown by a straight line L2 in FIG.

In this way, if the position data WHDATA and the cent data SCENT are associated in a comparative relationship and the proportional constant at that time is determined according to the variable width data SPDATA, the cent data SCENT can be easily obtained by calculation. . Therefore, in this embodiment, even if the recess 21 is at the same position, different cent data is obtained according to the variable width data, so that the pitch bend effect application control can be varied according to the variable width data. I have to.

Similarly, the cent data UKCE for UK and PK sounds
NT and PKCENT can be obtained by calculation, and these cent data obtained by the calculation are stored in the register unit MA5.

In this way, the data stored in the RAM 10 and the data from the circuits 4, 5 and 6 are given by the CPU 9 to the tone generator 11 via the bus 8 as necessary to give a predetermined tone or effect. , A tone signal having a pitch corresponding to the depressed key is generated for each sound group.

UK sound group tone signal generator 1 that can add pitch bend effect
3, solo tone group tone signal generator 14, PK tone group tone signal generator 1
Reference numeral 6 has a circuit structure for generating a musical tone signal by applying the pitch bend effect as shown in FIG. It should be noted that the UK tone group tone signal generation unit 13, the solo tone group tone signal generation unit 14, and the PK tone group tone signal generation unit 16 have the same configuration, and in FIG. Take out and show.

In FIG. 7, the solo key code latch circuit 40 receives via the bus 8 a key code SKC representing a single key preferentially selected from the keys pressed by the upper keyboard. The frequency number memory 41 stores the frequency number F1 having a value proportional to the reference pitch of the key represented by the latched key code SKC via the multiplier 42 into the accumulator 43.
Give to.

Further, when the key-on signal SKON which rises to the logic "1" level only while the key is pressed is given to the key-on signal latch circuit 44 through the bus 8 and the latch output signal of the latch circuit 44 rises, At the time of rising, the accumulator 43 is reset, and thereafter, the frequency number F2 given through the multiplier 42 is accumulated, and the accumulated value which changes at a rate according to this numerical value F2 is generated as a tone waveform in the phase data PHD. Give to part 45.

The tone waveform generating section 45 is also supplied via the bus 8 to the tone color selection data latch circuit 46 and the solo tone group tone color selection data STS latched by the tone color selection data latch circuit 46. The tone waveform generating section 45 sends out a tone signal MGS having a frequency according to the phase data PHD and a waveform (tone) according to the solo tone group tone color selection data STS. In addition,
The musical tone waveform generator 45 detects the timing of key depression and key release based on the key-on signal SKON given from the key-on signal latch circuit 44, and gives a predetermined amplitude envelope to this musical tone signal MGS. The MGS is given to the sound system 12 (Fig. 1) and sounded.

The solo sound group tone signal generator 14 has a pitch bend effect control circuit 18 in addition to the above configuration. The pitch bend effect control circuit 18 sets the multiplication coefficient MP for the multiplier 42 to "1" when the pitch bend effect is not applied and, on the other hand, when the pitch bend effect is applied, sets the value according to the effect amount to be applied. When applying the effect, the frequency number F1 corresponding to the reference pitch is changed to F2 by multiplying by the multiplication coefficient MP, and thus the pitch is changed from the reference pitch by changing the changing speed of the phase data PHD. is there.

That is, the pitch bend effect control circuit 18 controls the cent data latch circuit 47, which controls the cent data SCENT of the solo sound group given via the data bus 8, and the cent data SC.
It has a cent correspondence coefficient memory 48 that stores the multiplication coefficient MPA corresponding to each value of ENT.
The multiplication coefficient MPA corresponding to ENT is given from the cent correspondence coefficient memory 48 to the input terminal A of the selector 49. To the input terminal B of the selector 49, the multiplication coefficient MPB which takes the value "1" is always given. As the selection control signal for the selector 49,
The pitch bend effect imparting flag SPFLG is used. The pitch bend effect imparting flag SPFLG via the data bus 8 is applied to the flag latch circuit 50 to be latched, and the latched flag SPFLG is applied to the A selection control terminal SA for selecting the multiplication coefficient MPA of the input terminal A, and It is inverted through the inverter circuit 51 and is given to the B selection control terminal SB for selecting the multiplication coefficient MPB of the input terminal B.

Thus, when the flag SPFLG falls to logic "0", the multiplication coefficient MPB which takes the value "1" by the selector 49.
Is selected and given to the multiplier 42, and the frequency number F1 is given as it is (F2 = F1) to the accumulator 43, so that the tone waveform generator 45 causes the reference pitch corresponding to the pitch of the key represented by the solo key code SKC. When the flag SPFLG is raised to the logic "1", the selector 49 selects the multiplication coefficient MPA corresponding to the cent data SCENT, and supplies it to the multiplier 42 to output the frequency number F1. It is converted to F2 (F2 = F1 x MPA) and given to the accumulator 43, and the tone signal of the pitch deviated by a predetermined pitch from the pitch corresponding to the pitch of the key represented by the solo key code SKC (that is, the pitch bend effect is added. A musical tone signal) MGS is transmitted from the musical tone waveform generator 45.

The UK tone group musical tone signal generating unit 13 and the PK tone group musical tone signal generating unit 16 are also configured similarly to the solo tone group musical tone signal generating unit 14 and correspond to the pitches of the keys pressed on the upper keyboard and the pedal keyboard, respectively. A tone signal having a pitch shift corresponding to the position of the pitch bend wheel 20 is transmitted from the reference pitch. However, the UK tone group tone signal generating unit 13 is adapted to form a plurality of tone signals corresponding to each key pressed on the upper keyboard in a time division manner in a predetermined number of tone generating channels,
Since this point is well known in the art, detailed description thereof will be omitted.

On the other hand, the LK sound group tone signal generator that corresponds to the lower keyboard
The 15 does not have a pitch bend control circuit, and directly gives the frequency number from the frequency number memory to the accumulator to form phase data, and the musical tone signal having the reference pitch corresponding to the pitch of the key pressed by the lower keyboard is as it is. generate. The tone signal generator 15 also forms a plurality of tone signals corresponding to each key pressed by the lower keyboard in a predetermined number of tone generating channels in a time division manner.

As described above, when the player operates the Pitch Bend Wheel 20, generally, the player's right hand playing melody is not separated from the upper keyboard, and the left hand playing the chord is separated from the lower keyboard. It is thought to operate 20. Therefore, since it is considered that the lower keyboard is not depressed during the operation for imparting the pitch bend effect, in this embodiment, the LK tone group tone signal generation unit 15 corresponding to the lower keyboard is provided with the pitch bend effect control circuit. Not not.

When the power switch 33 of the electronic musical instrument is turned on, the CPU 9 executes the processing procedure shown in FIGS. 8 to 12 to control each circuit.

First, the CPU 9 executes the steps of the main routine shown in FIG.
When it is determined in SP1 that the power switch 33 (Fig. 1) has been turned on, the CPU 9 proceeds to the next step SP2,
For example, each flag SPFLG, UKPFLG, stored in RAM10,
PKPFLG, MSFLG, MUKFLG: MPKFLG etc. and SPDAT of each data
Initialization processing such as setting all of A, UPDATA, PPDATA, WHDATA, SCENT, UKCENT, PKCENT, etc. to initial values (for example, “0”) is executed.

When this initialization process is completed, the CPU9
Proceeding to SP3, each tone color designating switch of the tone color selecting unit 30 is scanned, and as a result, the tone color data of each tone group obtained is sent to the corresponding tone signal generating units 13 to 16 in the tone generator 11. The tone color data latch circuit (for example, the circuit 46) in each of the tone signal generators 13 to 16 latches the tone color data.

After that, the CPU 9 proceeds to step SP4 and scans each key switch of the keyboard circuit 4 to detect a newly pressed or released key, and performs a predetermined process (sound assignment control process or single note priority selection process) for the key. Etc., and sends the key code KC and the key-on signal KON of the depressed key to the corresponding tone signal generators 13 to 16 in the tone generator. In the tone generator 11, the key code latch circuit (for example, the circuit 40) and the key-on signal latch circuit (for example, the circuit 44) of the tone signal generators 13 to 16 latch the key code and the key-on signal.

Next, the CPU 9 proceeds to step SP5, scans the pitch bend operator unit 6, and loads the fetched data and RAM10.
Data processing is performed according to the data stored in, and the Pitchbend effect addition flags SPFLG, UKPFL obtained as a result are processed.
G, PKPFLG and cent data SCENT, UKCENT, PKCENT in tone generator 11 corresponding to tone signal generator 13, 1
Send to 4 and 16. In the tone generator 11,
A flag latch circuit (for example, the circuit 50) and a cent data latch circuit (for example, the circuit 47) in the tone signal generators 13, 14, 16 latch these incoming flags and data.

The skipping process of the pitch bend operator unit 6 can be roughly divided into a process of each selection switch 22, 23, 24 corresponding to a solo sound group, a UK sound group, and a PK sound group and a process of the pitch bend wheel 20. .

When the selection switch 22 is depressed and the CPU 9 detects this, the subroutine program is started in step SP10A as shown in FIG. 9 (A). Then step
Go to SP11A and add the pitch bend effect flag S for the solo sound group.
PFLG is inverted and the inverted pitch bend effect imparting flag SPFLG is sent to the solo tone group tone signal generator (TG) 14 in the tone generator 11. At this time, in the solo sound group tone signal generator 14, the selection output of the selector 49 is switched, and if the pitch bend effect is in the applied state, it is switched to the non-added state, and if it is in the non-added state, it can be added. Switch to the state.

The next step SP12A is the Pitchbend effect addition flag SPF.
This is a step of determining whether or not the pitch bend effect mode or the pitch variable width setting mode has been selected for the solo sound group based on the content of LG. As a result, when it is determined that the above mode has been selected because the pitch bend effect imparting flag SPFLG has risen to logic "1", the process proceeds to step SP13A and the corresponding selection display element 25 is turned on to turn on the solo sound group. After making the player visually recognize that the pitch bend effect has been selected, in step SP14A, the multi-menu selection flag MSFLG for the solo note group is raised to logic "1" and the multi-menu selection for other UK note groups and PK note groups is selected. The flags MUKFLG and MPKFLG are set to logic "0", and further, in step SP15A, the display device 35 of the multi-menu unit 34 is displayed.
A multi-menu (FIG. 4) corresponding to the pitch bend effect of the solo sound group is displayed on the display to let the player confirm the variable width at the present time, and then the main routine is returned at step SP16A.

On the other hand, in the determination of step SP12A, if a negative result is obtained because the pitch bend effect imparting flag SPFLG of the solo sound group falls to logic "0", the CPU 9 turns off the selective display element 25 in step SP17A. , The player is informed that the selection of the pitch bend effect of the solo sound group is completed. After that, the program proceeds to step SP18A, judges whether or not the multi-menu selection flag MSFLG of the solo sound group has risen to logic "1", and if a negative result is obtained, immediately proceeds to step SP16A and returns to main routine. On the other hand, if a positive result is obtained, the program proceeds to step SP19A to cancel the state of the multi-menu unit 34 in the display state of the pitch bend effect menu of the solo sound group, and then, at step SP20A, the multi-menu selection flag of the solo sound group. After the MSFLG is lowered to the logic "0", the main routine is returned at step SP16A.

Therefore, every time the performer turns on the selection switch 22, there is a state in which the pitch bend effect can be applied to the solo sound group, a state in which the pitch bend effect cannot be added, a state in which the variable width of the pitch can be set, and a state in which the pitch cannot be set. Switchable and selective display element
By turning on and off 25, the performer can confirm the state. Also, each time the selection switch 22 is turned on, the multimedia unit 34 displays or disappears the multimedia corresponding to the pitch bend effect of the solo sound group.

As shown in FIGS. 9B and 9C, the CPU 9 operates as shown in FIGS. 9B and 9C both when the selection switch 23 corresponding to the UK sound group is turned on and when the selection switch 24 corresponding to the PK sound group is turned on. Then, the same processing as the processing procedure shown in FIG.
Pitch bend effect imparting flags UKPFLG, PKPFLG and multi-menu selection flag MUKFLG: MPKFLG of the UK sound group or the PK sound group stored in the RAM10 are appropriately updated, and the selection display element 2
6 and 27 are controlled to be turned on and off, and as a display menu of the multi-menu unit 34, a menu relating to the pitch bend effect of the UK sound group or the PK sound group is displayed and controlled. 9 (B) and 9 (C), the steps corresponding to those in FIG. 9 (A) are changed from the last character of the code from "A" to "B" or "C", and the other characters are given the same reference numerals. Indicate.

The CPU 9 executes the processing of the pitch bend wheel 20 according to the processing procedure shown in FIG. This process may be executed at regular intervals based on the clock pulse, or may be executed only when the pitch bend wheel 20 changes.

In the case of this embodiment, when the pitch bend wheel 20 is scanned and it is detected that there is a change in the state, the program is started in step SP30, and the position data of the pitch bend wheel 20 is advanced to the next step SP31. WH
DATA is taken into the position data register unit MA4 of RAM10.

After that, in step SP32, it is determined whether or not the pitch bend effect imparting flag SPFLG of the solo sound group is set to logic "1", and if an affirmative result is obtained, the process proceeds to step SP33 to calculate from the position data WHDATA and the variable width data SPDATA. Then, the cent data SCENT is obtained and sent to the solo sound group tone signal generator 14 of the tone generator 11.

If the pitch bend effect addition flag SPFLG for the solo sound group is not set, or if the sending operation of the cent data SCENT of step SP33 is completed, the CPU 9 proceeds to step SP34 and the UK
The state of the pitch bend effect imparting flag UKPFLG of the sound group is discriminated, and if the flag UKPFLG is raised to logic "1" in the same manner as described above, the cent data UKCENT is calculated from the position data WHDATA and the variable width data UPDATA in step SP35. After it is sent to the UK tone group tone signal generator 13 of the tone generator 11 and then, when the flag UKPFLG falls to logic "0", the pitch bend effect imparting flag PK of the PK tone group is immediately issued.
Proceed to SP36 for determining PFLG.

In this step SP36, the flag PKPFLG is logic "1".
If a positive result is obtained by
After proceeding to SP37, the cent data PKCENT is obtained by calculation from the position data WHDATA and the variable width data PPDATA, and is sent to the PK sound group tone signal generator 16 of the tone generator 11, and then the flag PKPFLG is set to logic "0". If a negative result is obtained in step SP36 due to rising, the program immediately proceeds to step SP38 and returns to the main routine.

Therefore, when the performer operates the pitch bend wheel 20, the cent data corresponding to the operation position of the pitch bend wheel 20 for each sound group for which the pitch bend effect mode is selected through the program is generated for each sound group tone signal generation unit. Sent to.

In this way, the processing of the selective switches 22 to 24 and the pitch bend wheel 20 (see FIGS. 9A, 9B, 9C and 10).
When the scan process (step SP5 in FIG. 8) of the pitch bend operator unit 6 shown in FIG.
Then, the scanning process of the multi-menu unit 34 is executed. Here, the scanning process of the multi-menu unit 34 is the eleventh.
This is divided into the on-event processing of the increase instruction switch 36 and the decrease instruction switch 37 shown in FIGS.

The CPU 9 scans the increase instruction switch 36, and
When the switch 36 is turned on and a change from the off state to the on state is detected, the program for increasing the parameter displayed on the display device 35 of the multi-menu unit 34 is started in step SP40A shown in FIG. 11 (A). To do.

In step SP41A, the state of the multi-menu selection flag MSFLG of the solo sound group stored in RAM10 is discriminated, and if a positive result is obtained because it rises to logic "1", it is stored in RAM10 in step SP42A. The variable width data SPDATA of the existing solo sound group is stored again by "+1", and then the variable width value for the solo sound group displayed on the display device 35 in step SP43A is increased by "1". The width data is converted to the SPDATA value and displayed.
Return to the main routine at SP44A.

In step SP42A, when the variable width data SPDATA already stored has the maximum value "12", "+
Continue "12" without "1".

If a negative result is obtained because the multi-menu selection flag MSFLG for the solo note group falls to logic "0" in step SP41A, the CPU 9 proceeds to step SP45A and the multi-menu selection flag MUKFLG for the UK note group. Determine the state of. As a result, if a positive result is obtained, the variable width data UPDATA of the UK sound group is added by "+1" with the condition of maximum "12" and stored again, as in the case of the solo sound group,
UP that updated the variable width value displayed on the display unit 35
Convert to DATA value (steps SP46A, SP47A).

On the other hand, if a negative result is obtained in step SP45A, the flow proceeds to step SP48A to further determine the state of the multi-menu selection flag MPKFLG of the PK sound group. As a result, if an affirmative result is obtained, the variable width data PPDATA of the PK sound group becomes "+" with the condition of "+" as in the case of the solo sound group.
1 "is added and stored again, and the variable width value displayed on the display device 35 is converted into the updated PPDATA value (steps SP49A, SP50A).

If a negative result is obtained in step SP48A, the process proceeds to step SP51A, and the multi-menu unit 34
Is used to increase the parameter value, and then
Return to the main routine.

Similarly, when the decrease instruction switch 37 is turned on, the CPU9
Executes the parameter reduction program shown in FIG. 11 (B). That is, the multi-menu selection flags MSFLG, MUKFLG: MPKFLG rising to logic "1" are discriminated (steps SP41B, SP45B, SP48B), and the variable width data SPDATA, UPDATA of the sound group corresponding to the rising flag are detected. PPDATA is subtracted by "1" under the condition that the minimum value is "0" and stored again (steps SP42B, SP46B, SP49B), and then "1"
Convert the display on the display device 35 to the value of the subtracted variable width data SPDATA, UPDATA, PPDATA (steps SP43B, SP47B,
SP50B). All multi-menu selection flags MSFLG, MUKF
When LG and MPKFLG both fall to the logic "0", reduction processing of the parameter values other than the pitch bend effect is executed (step SP51B).

Thus, the increase instruction switch of FIG. 11 (A) or (B)
By the on-event processing of 36 or decrease instruction switch 37,
The parameter displayed in the multi-menu section 34, for example, the value of the variable width data SPDATA, UPDATA, PPDATA is increased by "1" by one ON operation of the switches 36, 37,
Alternatively, it is decreased by "1".

In this way, when the scanning process of the multi-menu unit 34 is completed, the CPU 9 proceeds to step SP7 to execute the scanning process of the parameter setting mode selection unit 31. When it is detected that the state of any one of the operators of the parameter setting mode selection unit 31 has changed, the CPU 9 starts the program shown in FIG. 12 at step SP60, and at step SP61 the multi-menu selection flag MSFL for the pitch bend effect.
G, MUKFLG, MPKFLG are all set to logic "0". As a result, the multi-menu unit 34 becomes in a state in which it is not possible to select the multi-menu relating to the pitch bend effect, so that the setting process of other parameters of steps SP51A and SP51B shown in FIGS. 11A and 11B can be executed. I have to. When this step S61 ends, the process proceeds to step SP62 to perform a process according to the operation content of the selection unit 31, for example, a process for causing the multi-menu unit 34 to display the multi-menu corresponding to the type of the parameter instructed by the operation ( For example, 9th
(Processes according to FIGS. (A) to (C)) are executed and the process returns to the main routine in step SP63. In this way, the CPU 9 scans the parameter setting mode selection unit 31, processes the data in accordance with the fetched data and the parameter data set and updated by the multimedia unit 34 stored in the RAM 60, and obtains the result. The generated data is sent to the tone generator 11 as needed.

After that, the CPU 9 proceeds to step SP8 and proceeds to the other operation part 3
2 is scanned, and the data corresponding to the operation of the operation section 32 is sent to the tone generator 11 as necessary.

Upon completion of this step SP8, the CPU 9 causes the above step S
Return to P3, and then step SP3-SP4-SP5-SP6-SP7-S.
By repeating the loop LP consisting of P8-SP3, each circuit 4,
Various data from 5 and 6 are successively taken in, data processing is performed as necessary, and the data is sent to the tone generator 11. Thus, CPU9, from the tone generator 11,
A tone signal MG having tone colors, pitches, effects and the like based on the data is generated.

Applying the pitch bend effect In the above configuration, if the performer attempts to set ± 8 semitones as the variable width of the pitch bend for a solo note group, for example, the performer will turn on the selection switch 22 and the selection display element 25. Repeat pressing operation until you can confirm, then
The increase instruction switch 36 or the decrease instruction switch 37 may be repeatedly pressed until the variable width data of the solo sound group displayed on the display device 35 becomes "8".

At this time, the CPU 9 selects the selected switch 2 in step SP5.
After detecting the occurrence of the ON operation of No. 2 and executing the program shown in FIG. 9 (A) to turn on the display element 25, and after displaying the menu of the pitch bend effect for the solo sound group on the display device 35, Repeated loop LP. Eventually, when the ON operation of the increase instruction switch 36 or the decrease instruction switch 37 is detected in step SP6, FIG. 11 (A).
Alternatively, the program shown in FIG.
Increase or decrease the variable width data of the solo sound group on 35 by "1" and return to the main routine. Thereafter, switch 36 or
Each time 37 is turned on, the program shown in FIG. 11 (A) or FIG. 11 (B) is executed at step SP6, and thus the variable width data SPDATA of the solo sound group stored in the RAM 10 is set to "8". ".

Therefore, according to the above-described embodiment, the switches 22, 23, 24 are turned on to select the pitch bend effect mode for each sound group, and then the increase instruction switch 36 or the decrease instruction switch 37 is operated to perform the solo operation. The pitch range of the pitch bend can be set separately for each of the sound group, the UK sound group, and the PK sound group, and the degree of freedom in musical expression can be further increased.

In the above configuration, if the performer wants to selectively apply the pitch bend effect to each tone signal of the solo sound group, the UK sound group, and the PK sound group at the time of performance, the performer selects the selection switches 22 to 24. Are pressed until it can be confirmed that each of the selective display elements 25 to 27 is lit (the pressing operation may not be performed if it is in the lit state from the beginning), and then, for example, with the right hand pressing the upper keyboard, The pitch bend wheel 20 may be appropriately rotated with the left hand while pressing the pedal keyboard with the foot.

At this time, the CPU 9 detects the ON operation of the selection switches 22, 23, 24 while repeating the operation of the loop LP, and the ninth operation is performed.
When the player finishes the operation on the switches 22 to 24 by executing the processing shown in FIGS. (A), (B) and (C), the selection display elements 25 to 27 are turned on and the pinch bend effect imparting flag SPFLG of the RAM 10 is displayed. UKPFLG and PKPFLG are raised to logic "1" and sent to the tone generator 11. After that, when the pitch bend wheel 20 is rotated, the CPU 9 causes the pitch bend wheel 2 to move at step SP5 in the loop LP.
When the turning operation of 0 is detected, the processing shown in FIG. 10 is executed and the cent data SCENT, UKCENT, PKC is sent to the tone generator 11.
Send ENT. This allows solo sounds, UK sounds, PK
From the sound group musical tone signal generators 13, 14, 16 are transmitted musical tone signals to which the pitch bend effects having different variable widths are applied.

Therefore, according to the above embodiment, by rotating the single pitch bend wheel 20, the pitch bend effect can be simultaneously given to all or part of the musical tone signals of the plurality of sound groups, and It is possible to enrich the target expression by a simple operation.

Other Embodiments (1) In the above-mentioned embodiment, each note group is used as each keyboard, but as the note group, a plurality of note groups formed by dividing the keyboard range of a single-step keyboard or one key depression is used. It may be a plurality of tone groups adapted to generate musical tones with different tone colors.

(2) In the above embodiment, the variable width of the pitch bend can be set in semitone units between 0 and 12 semitones, but the variable width may be set in cent units or in frequency ratio. Also, the maximum value that can be set may be smaller or larger than 12 semitones (1200 cents).

(3) In the above embodiment, the sound group musical tone signal generating section which gives the pitch bend effect by changing the frequency number as shown in FIG. 7 has been described, but the present invention is not limited to this. As disclosed in Japanese Patent Laid-Open No. 56-74298, the pitch information may be given by changing the frequency information represented by logarithm according to the position of the pitch bend wheel 20. . Further, a note clock counting method is adopted as a method of generating the phase data, and the pitch bend effect may be imparted by changing the cycle of the note clock pulse according to the position of the pitch bend wheel 20. . Furthermore, the Pitchbend effect may be added in an analog manner.

(4) In the above embodiment, as shown in FIGS. 8 to 12, the whole is controlled by software to give the pitch bend effect. However, the present invention is not limited to this, and the present invention is a dedicated hardware. It can also be applied to a device which is controlled by the method described above to impart the Pitchbend effect.

(5) In the above embodiment, the pitch bend wheel
From the 20 position data WHDATA and the variable width data of Pitchbend (SPDATA, UPDATA, PPDATA), the cent data (SCEN
T, UKCENT, PKCENT) is obtained by calculation, but not limited to this, for example, a cent data memory that stores cent data for each value of variable width data is provided, and position data WHDATA is used as address data to determine a predetermined value. May be obtained.

(6) In the above-described embodiment, the wheel shape provided on the left side of the lower keyboard is shown as the operator (20) for imparting the pitch bend effect, but the present invention is not limited to this, and the position data is obtained by sliding. The shape may be such that WHDATA can be sent out, or the shape suitable for operation by a foot. Also, the mounting position is not limited to the above position.

〔The invention's effect〕

According to the present invention, the changeable width of the pitch can be set in correspondence with the keys arranged in semitone units on the keyboard, which facilitates musical arbitrary setting. That is, when the pitch control operator means is operated to the maximum, how much the pitch is desired to be changed can be intuitively understood by associating it with the number of keys, thereby facilitating the setting.

Further, it becomes easy to understand the relationship between the arbitrary operation amount of the operator and the pitch change amount. For example, when the changeable width is set to 4 semitones, when the operation amount of the operator is about half, It is possible to intuitively understand that the pitch changes by the number of keys by two keys, that is, about a whole note, and it becomes easier to control the pitch vent effect imparted by the operation of the operating elements during the actual performance, and the playability is improved. Is.

Further, since the upper and lower limits of the pitch changeable width are increased or decreased in response to the operation of the changeable width setting operator means, the changeable width of the pitch can be set very easily. it can.

[Brief description of drawings]

FIG. 1 is a block diagram showing the overall configuration of an electronic musical instrument according to an embodiment of the present invention, FIG. 2 is a perspective view showing a pitch bend wheel 20, and FIG. 3 shows the arrangement of each operator of a pitch bend operator section 6. FIG. 4 is a plan view showing the arrangement of the parameter setting unit 34, FIG. 5 is a schematic diagram showing the allocation of the memory area of the RAM 10, and FIG. 6 is position data WHDATA and cent data of the pitch bend wheel 20. FIG. 7 is a schematic diagram showing the relationship with SCENT, FIG. 7 is a block diagram showing the detailed construction of the solo tone group tone signal generator 14, FIG. 8 is a flow chart showing the main routine of FIG. 1, and FIG. ), (B), (C) and FIG. 10 are flow charts showing the subroutine in step SP5 of FIG. 8, and FIGS. 11 (A) and (B) are flow charts showing the subroutine in step SP6 of FIG. , Fig. 12 corresponds to step SP7 in Fig. 8. Is a flow chart showing a kick subroutine. 4 ... Keyboard circuit, 5 ... Panel control circuit, 6 ... Pitch bend control section, 9 ... CPU, 11 ... Tone generator, 12 ... Sound system, 17-19 ... Pitch bend effect control circuit.

Claims (1)

[Claims] 1. A tone signal generating means for generating a plurality of series of tone signals, a single pitch control operator means, a changeable width setting operator means for setting a changeable width, and a pitch The changeable width is a changeable width setting means for independently setting the changeable width in semitone units independently for each of the series, and the changeable width of the pitch in response to the operation of the changeable width setting operator means. The upper limit and the lower limit are interlocked to increase or decrease, and change according to the operation of the pitch control operator means within the range of the pitch changeable width set by the changeable width setting means for each series. Pitch control data forming means for forming and outputting pitch control data, wherein the musical tone signal generating means generates a pitch control data based on the pitch control data for each series formed by the pitch control data forming means. Electronic musical instrument characterized by generating a tone signal of each series switch will change.