JP2541063B2 - Electronic musical instrument - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to an electronic musical instrument having a keyboard such as an electronic piano, and more particularly to an electronic musical instrument capable of dividing a key range and assigning different tone colors to the respective divided key ranges.

[0002]

2. Description of the Related Art As is well known, in recent years, a key range is divided, one of them is defined as an accompaniment performance key range, and the other is defined as a melody performance key range. A predetermined tone color is assigned to each of the divided key ranges. Various electronic musical instruments that can be assigned have been put into practical use.

In this kind of electronic musical instrument, for example, a plurality of tone color switches divided into two groups are arranged on the panel surface, and the key range is divided into two when the tone color switches of each group are simultaneously operated. Switch to split mode. Then, in this division mode, when a predetermined key on the keyboard is pressed, the key is divided into an upper key range and a lower key range, and the selected timbres are divided into two parts. It is supposed to be assigned. Incidentally, such an electronic musical instrument is disclosed in Japanese Patent Laid-Open No. 1-182895.

[0004]

By the way, in the above-mentioned conventional electronic musical instrument, when the tone color switches of each group are simultaneously operated, the mode is shifted to the division mode. For this reason, only one tone color can be selected from each group as the tone color assigned to each divided key range.

That is, although this electronic musical instrument is provided with a plurality of tone color switches, there is a problem in that after the key range is divided, various tone colors provided to each key range cannot be freely assigned. Moreover, once the timbres have been assigned to the respective key ranges, they cannot be interchanged with each other, and the operation has been troublesome in that they have to be set again from the beginning. After all, in the conventional electronic musical instrument for dividing the key range, there is no degree of freedom in tone color setting, and good operability is lacking in that setting as well. The present invention has been made in view of the above circumstances,
An object of the present invention is to provide an electronic musical instrument capable of extremely easily dividing a key range and assigning a tone color to each key range.

[0006]

According to a first aspect of the present invention, a keyboard is divided into a plurality of key ranges by at least one division point , and different tone colors are assigned to the divided key ranges to generate electronic sounds. in musical instruments, tone color setting of tone color selection means (7 to select the first and second tones even without least punished
Of the tone color assignment mode.
Instruction means (steps Sg1, 2, 11, 14 in FIG. 12)
And the tone assigning mode by this mode instructing means.
Is indicated, the high-pitched side from the dividing point
When the key is pressed to push the key range of
Assigning the first tone color to the key range on the treble side of the dot
Assign the second tone to the low-pitched key range of the division point
The keypress operation to press the key range on the low side of the dividing point.
If it is made, the first key is added to the key range on the bass side of the dividing point.
Assigned tones and the key range on the high side of the dividing point
Tone assignment means for assigning the second tone in (in FIG. 12
(Corresponding to steps Sg15 to 19 and Sg21 to 24)) . Also, in claim 2.
Of the electronic musical instrument according to claim 1,
The dividing point can be set arbitrarily (step Sg1 in FIG. 12).
Corresponding to ~ 4).

[0007]

According to the electronic musical instrument according to the invention according to the action] claim 1, even without least Ri by the tone color selection means have selected the first and second tones, tone assigned by mode instructing means Mo
Division point set on the keyboard when the keyboard is instructed
When a key in the treble range is pressed, the treble range
Assign the first tone to the
The second tone is assigned to the range. On the other hand, mode indicating means
When the tone color assignment mode is instructed by
When the key range lower than the dividing point is pressed, this dividing point
The first tone is assigned to the low bass range and
The second tone color is assigned to the key range on the high tone side of the split point . As a result, the tone colors can be exchanged between the keyboard regions divided at the keyboard region division points by the keyboard operation. In addition, claim 2
According to the electronic musical instrument of the invention described in claim 1,
With the electronic musical instruments of
It As a result, on the keyboard, the above-mentioned first and second
You can freely set the range to which the tones of
It

[0008]

Embodiments of the present invention will be described below with reference to the drawings. A. Overall Configuration FIG. 1 is a diagram showing the overall configuration of an electronic musical instrument according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a keyboard equipped with a key-depression detection circuit or the like, which generates key-on information such as a key-on / off signal or a key code corresponding to a key-release operation, or touch data corresponding to a key-pressing strength. . 2 is an MID for exchanging MIDI signals by connecting to an external MIDI musical instrument (not shown)
I interface.

Reference numeral 3 denotes various panel switches arranged on the panel surface of the electronic musical instrument. This panel switch 3 is
For example, as shown in FIG. 2, tone color switches VSW1 to VSW5 for setting various tone colors, mode switches DUAL and SPLIT for setting performance modes, or a set switch S for selecting a touch conversion table (described later).
ET1, SET2, etc. are arranged. The panel switch 3 is configured to generate various switch signals corresponding to respective operations.

Here, the mode switch DUAL is
Using the two tone color data selected by the tone color switch,
This is a switch for designating a dual mode in which two tones are produced simultaneously. The mode switch SPLIT is a switch for designating a split mode in which a selected tone color is assigned to each of the two key ranges divided by a predetermined key on the keyboard 1 as a boundary. When both of these mode switches are not operated, the normal mode in which the entire key range is sounded with a single tone color is set. Therefore, in this embodiment, three performance modes of normal, dual, and split are defined as performance modes. The operation of each performance mode will be described later.

The above-mentioned performance modes have the following relationships when selecting a tone color. That is, in the normal mode, one kind of tone color data can be designated, and this becomes the "main voice". Further, in the dual mode and the split mode, two types of tone color data can be designated, of which the tone color selected first is the "main voice" and the other is the "sub voice".

Reference numeral 4 is a display device composed of an LED (light emitting diode) or the like. The display 4 is, as shown in FIG.
A display unit ND that displays alphanumeric characters with a 7-segment LED,
It is composed of LEDs 1 to 7 that indicate an on / off state according to an operation of the panel switch 3. Here, the display unit ND displays the tone color numbers of the above-mentioned "main voice" or "sub voice" and the tone names of split keys (described later) set when the key range is divided. The LEDs 1 to 7 are the tone color switches VSW1 to VSW described above.
The switch SW5, the mode switches DUAL and SPLIT, and the set switches SET1 and SET2 are turned on / off according to the on / off states. It should be noted that these switches are toggled on and off, and when they are pressed in the off state, they are turned on, and when they are pressed further, they are turned off. It is also detected that the operator maintains the pressed state of each switch, that is, that the switch is continuously pressed.

Reference numeral 5 denotes a CPU which controls each part based on various data supplied via the system bus, and its operation will be described later. The CPU 5 also executes timer interrupt processing (described later) based on a timer interrupt signal supplied every 10 msec from a timer clock generation circuit (not shown). A ROM 6 stores various control programs loaded into the CPU 5, preset data such as tone color data and a touch conversion table. That is, in the ROM 6, as shown in FIG. 3A, the control program is stored in the storage area E1, and the tone color switch VSW described above is stored in the storage area E2.
1 to VSW5 corresponding to tone color data VOICE1 to
VOICE5 is stored. Also, the storage area E3
Includes four types of touch conversion tables TTBL1 to TTB
L4 is stored.

The touch conversion tables TTBL1 to TT
BL4 is a data table that outputs a touch data generated according to the key pressing strength by adding desired touch characteristics. These touch conversion tables TTBL1 to TTB
L4 is a tone color switch VSW1 to VSW while pressing one of the set switches SET1 and SET2 described above.
It is selected by SW4. That is, the tone color switches VSW1 to VSW4 correspond to the touch conversion tables TTBL1 to TTBL4, respectively.

Selection of such a touch conversion table is referred to as a touch conversion function. This function is set to an off state by pressing the set switch SET1 (or SET2) and the tone color switch VSW5, and the function is released. To be done. Here, the output of the touch conversion table selected while pressing the set switch SET1 is supplied to the sound source of the musical sound generating unit 8. On the other hand, set switch SET
The output of the touch conversion table selected while pressing 2 is
It is supplied to an external sound source connected via the MIDI interface 2.

The touch conversion tables TTBL1 to TTBL4 selected in this manner store conversion data for imparting touch characteristics in the mode shown in FIG. 3B.
That is, the conversion data TOUCH-0 to 1 corresponding to the touch strength of 128 steps sequentially from the read address at the beginning.
27 are stored. As a result, the touch data corresponding to the key pressing strength is used as the read address, and the read conversion data is output.

Next, the configuration of the embodiment will be described with reference to FIG. 1 again. A RAM 7 is used as a work area for the CPU 5 and temporarily stores various register data. This RAM 7 is, as shown in FIG.
A storage area RE in which various register data is stored, a buffer area BE1 in which event data is written,
It has a transmission buffer area BE2 in which MIDI transmission data is written. In addition, each of these areas RE, B
Regarding the contents of the data written to E1 and BE2,
It will be described later. Reference numeral 8 denotes, for example, a tone generation unit configured by a well-known waveform memory reading method, which synthesizes a tone based on key depression information (key on / off, key code and touch data) and tone color data supplied from the system bus,
The tone signal W obtained as a result is output. Reference numeral 9 denotes a sound system, which filters the musical tone signal W to remove noise and adds sound effects, and then amplifies the musical tone signal W and outputs it from the speaker SP.

B. Operation of Embodiment Next, the operation of the embodiment having the above configuration will be described with reference to FIGS.
This will be described with reference to FIG. Note that, here, first, a main routine executed by the CPU 5 will be described as a schematic operation of the embodiment, and then operations of various routines executed in each of the above-described performance modes will be described.

(1) General Operation (Operation of Main Routine) When power is applied to this embodiment, the CPU 5 causes the ROM 6 to operate.
After loading the control program from, the main routine shown in FIG. 5 is started, and the process proceeds to step Sa1 of the routine. First, when the processing of the CPU 5 proceeds to step Sa1, various registers stored in the RAM 7 described above,
Various variables, which are initial settings for the peripheral circuits, are initialized, and the process proceeds to the next step Sa2. In step Sa2,
A key switch scanning process is performed to detect a key press state of the keyboard 1 and a key operation of the panel switch 3, and the process proceeds to the next step Sa3.

At step Sa3, MIDI processing is performed. This MIDI processing is to send and receive a MIDI signal via the above-mentioned MIDI interface 2. For example, note-on / off or note-code generated based on the key press operation detected in step Sa2, A key event such as touch data is transmitted as a MIDI signal. In this case, the MIDI signal is
It is read from the transmission buffer area BE2 of the RAM 7 (see FIG. 4).

Next, in step Sa4, setting display processing is performed. In this setting display processing, the key operation of the panel switch 3, that is, the tone color switches VSW1 to
Tone setting by VSW5, mode switch dual,
The setting of the performance mode by SPLIT, the setting of the touch conversion table by the set switches SET1, SET2, etc. is displayed on the display device 4, and the process proceeds to the next step Sa5.

At step Sa5, key-on (sounding) / key-off (mute) processing is performed in response to a key release operation, and when these sounding or mute processing is completed, step Sa2
Then, the operation described above is repeated. In this way, in the main routine, after the initialization, the player's key depression / release operation or panel switch operation is detected, and MIDI processing, setting processing, and sound generation processing corresponding to this are repeated.

(2) Operation of Various Routines Next, various routines forming the above-mentioned main routine will be sequentially described in association with the operation of each performance mode.

A. Normal Mode In this case, the performance mode is uniquely set as the normal mode when the power is turned on. In this normal mode, one type of tone color can be set, and a single tone color tone is produced based on this tone color. First, before playing, for example,
Tone switch VSW that allows the performer to specify the tone of the piano sound
If you select 1, step S of the main routine described above
This switch event is detected at a2 (see FIG. 5).

Next, when this switch event is detected, the setting display processing of step Sa4 is executed. As a result, the CPU 5 activates the setting display processing routine shown in FIG. In this case, since only the tone color is set in the setting display process routine, the tone color setting process of step Sb5 is started, and the process proceeds to step Sc1 of the tone color setting routine shown in FIG.

At step Sc1, the tone color switch VSW
It is determined whether there is an on event of 1 to VSW5.
In this case, since the timbre switch VSW1 has been operated, the determination result is "YES", and the next step Sc2
Proceed to. At step Sc2, the mode switch SPLI is
It is determined whether T is in an off state, that is, in a split mode described later. Here, since the normal mode is set, the determination result is "YES", and step S
Proceed to c3.

If the tone color switches VSW1 to VSW5 are not on events, the result of the determination in step Sc1 is "NO", and the process proceeds to step Sc13. In step Sc13, it is determined whether or not all the tone color switches VSW1 to VSW5 are in the off state. When the all tone color switches VSW1 to VSW5 are in the off state, the determination result is "YES", and the process proceeds to step Sc14. Next, at step Sc14, the flag value of the register FLG2, which will be described later, is set to "0" to complete this routine.
"O" to complete this routine.

In step Sc3, it is determined whether or not the flag value of the register FLG2 is "0". Here, the register FLG is a flag which is set to "0" when the setting of two tones is completed. Then, here, since the initial setting after the power is turned on and the flag value is "0", the result of this determination is "YES", and the routine proceeds to step Sc4.

When the operation proceeds to step Sc4, the operated tone color switch, that is, the tone color switch VSW in this example.
When 1 is operated, the tone color of the piano tone becomes the above-mentioned "main voice", the tone color number of this piano tone is set in the register MAINV, and the register MAINV is set.
Tone number read from INV is a 7-segment LED
Is displayed on the display unit ND composed of. This allows the player to confirm that the selected tone color is a piano tone.

Next, when the operation proceeds to step Sc5, the corresponding tone color LED is turned on. In this case, the tone color switch VSW1
The LED 3 arranged on the upper part of the LED lights up to indicate that it is in the ON state. Next, in step Sc6, it is determined whether or not the register DUALFLG is "1". "1" is set in the register DUALFLG when the performance mode is the dual mode. Therefore, since the normal mode is set here, the determination result is "NO", and this routine is completed. On the other hand, in the dual mode described later, that is, when the flag value of the register DUALFLG is "1", the determination result is "YES", and the next step Sc
Proceed to 7. Then, in step Sc7, "1" is set in the above-mentioned register FLG2, the routine is completed, and the process returns to the main routine.

When the player presses and releases the key when the setting of the "main voice" is completed, a key event is detected and step Sa5 of the main routine is performed.
At the sound generation processing is performed. When this tone generation processing is activated, the processing of the CPU 5 proceeds to step Sd1 of the tone generation processing routine shown in FIG. In step Sd1, it is determined whether or not there is a key event. In this case, it is determined that there is a key event, the determination result is “YES”, and the process proceeds to step Sd2.
In step Sd2, a tone generation channel assignment process is performed. For example, when all the simultaneous tone generation channels are being produced, a process of assigning the most attenuated channel as a new tone generation channel is performed. Also, in the dual mode, two sound generation channels are secured.

Next, when the tone generation channels are assigned, the process proceeds to step Sd3, and it is determined whether or not the detected key event is key-on. Here, in the case of a key release operation, the determination result is "NO", and the key-off process is performed in step Sd4. On the other hand, in the case of a key depression operation, the determination result of step Sd3 becomes “YES”, and the process proceeds to step Sd5.

At step Sd5, the register KEYTB
It is determined whether L is "0". This register KE
YTBL stores a flag value indicating whether or not to use the touch conversion function described above. When "0" is stored, the touch conversion function is not used, while
When "1" is stored, the touch data by the touch conversion table is converted. The operation of the touch conversion function will be described later. And in this case,
Since the touch conversion table is not selected, the determination result is "YES", and the process proceeds to step Sd6.

In step Sd6, the touch data TCH corresponding to the key pressing strength is set in the register TCHON, and the process proceeds to the next step Sd7 (see FIG. 9). Step Sd7
Then, it is determined whether or not the register SPLITFLG is "0". The register SPLITFLG is set with a flag value indicating the split mode. When "1" is set, the performance mode is the split mode. Therefore,
In this case, since it is the normal mode, the judgment result is "Y
ES ”, and proceeds to the next step Sd8.

Then, in step Sd8, the register M
The tone color data corresponding to the tone color number of the "main voice" stored in AINV is read from the ROM 6 and transferred to the tone generation channel determined in step Sc2. In this example, the "main voice" is the tone color data VO.
ICE1, that is, the piano sound is transferred to the sound generation channel. Then, in step Sd9, the key code KC corresponding to the key pressing operation, the touch data set in the register TCHON, and the key-on signal Kon are sent to the sounding channel to which the sound source is assigned and sounded.
Then, when the process proceeds to step Sd10, the register DUAL
It is determined whether the FLG flag is "1". Here, since it is the normal mode, the judgment result is "NO".
Then, the tone generation processing routine is completed and the process returns to the main routine.

As described above, when this embodiment is in the normal mode, the desired tone color is set as the main voice prior to the performance, and the performance operation is performed after that.
The set single tone tone will be sounded.

B. Dual Mode In this case, when the performer operates the mode switch DUAL (FIG. 2) provided on the panel surface, the operation is detected by the key switch scanning process (step Sa2),
Then, the setting display process of step Sa4 is performed.
As a result, the CPU 5 activates the setting display processing routine (see FIG. 6) and proceeds to step Sb1. Then, when the process proceeds to step Sb1, the dual switch processing routine is activated and the process proceeds to step Se1 in FIG.

First, in step Se1, it is determined whether or not the event is an on event caused by the operation of the mode switch DUAL. In this case, since the mode switch DUAL has been operated, the determination result is "YES", and the process proceeds to the next step Se2. In step Se2, it is determined whether or not the flag value of the register DUALFLG is "0", that is, whether or not the mode switch DUAL has already been operated. Here, the switch DUAL
Is operated and the dual mode is set, the determination result is “NO”, and the process proceeds to steps Se3 to Se5.
The dual mode is released and the above-described normal mode is entered.

That is, in step Se3, the flag value of the register DUALFLG is set to "0", and step Se is executed.
In 4, the LED 1 (see FIG. 2) arranged on the panel surface is turned off. Then, in step Se5, one of the LEDs 3 to 7 for displaying the tone color corresponding to the "main voice" is turned on. In this way, the mode switch DUAL
It operates like a toggle switch, and when it is operated from the on state, it turns off and shifts to the normal mode. When the dual mode is switched to the normal mode, the "main voice" selected in the dual mode is set as it is as the "main voice" in the normal mode.

On the other hand, when the result of the determination in step Se2 is "YES", that is, when the normal mode is set to the dual mode, the process proceeds to step Se6. In step Se6, the flag value of the register DUALFLG becomes "1", and subsequently in step Se7,
The LED 1 (see FIG. 2) is turned on. Next, in steps Se9 to Se10, in consideration of the case where the previous mode is the split mode described later, processing for canceling this is performed.

That is, when the process proceeds to step Se8, the flag value of the register SPLITFLG is set to "0",
This means that it is not in the split mode, and subsequently, in step Se9, the LED 2 (see FIG. 2) arranged on the panel surface is turned off. In step Se10, the values of the registers SPLTON, SFLG1, FLG1 are set to "0", respectively, to clear the split mode state. In addition, these registers SPLTON, SFLG
The meaning of the values of 1 and FLG1 will be described later.

In this way, with the dual mode set, the performer selects tone color switches VSW1 to VSW5.
When the "main voice" and the "sub voice" are sequentially selected from among the above, the process proceeds to step Se11, and the LED for tone color display corresponding to these switch operations is turned on. This completes this dual switch processing routine and returns to the main routine.

Next, the processing of the CPU 5 which has returned to the main routine proceeds to the tone color setting processing routine (see FIG. 7) based on the tone color switch operation by the player. Here, as described above, when the player first operates the tone color switch VSW2 in the dual mode setting, as described above, the tone color of the switch VSW2 is changed to "1" through steps Sc1 to Sc7. Assigned as "main voice". Subsequently, for example, when the player operates the tone color switch VSW3 while pressing the tone color switch VSW2, the determination result of step Sc3 of this tone color setting processing routine becomes "NO", and the process proceeds to step Sc8.

In step Sc8, it is determined whether or not the switch designating the main voice is still in the on state (pressed). Here, if the switch is not being pressed (released), the result is "NO", and step S
The process proceeds to c4 and the subsequent processing is performed assuming that a new main voice is designated. Therefore, in this case, since the switch VSW2 is still pressed, the determination result is "YE
S ”, and the process proceeds to the next step Sc9. Step Sc
At 9, it is determined whether or not a tone color switch having a number different from the "main voice" is operated. And also in this case,
Since the tone color switch VSW3 having a different number is being operated, the determination result is "YES", and the process proceeds to step Sc10.

Then, in steps Sc10 to Sc11, the tone color switch VSW3 operated the second time is set as the "sub voice". That is, step Sc1
At 0, the selected tone color number is set in the register SUBV, and then at step Sc11, "sub voice" is set.
LED5 corresponding to the tone color switch VSW3 selected for
(See FIG. 2) is lit. Next, in step Sc12, the flag value of the register FLG2 is set to "0" so as to indicate that the two tone color setting is completed, and this routine is completed.

When the player presses and releases the key at the time when the setting of the "main voice" and the "sub voice" is completed in this way, a key event is detected and a sounding process is performed in step Sa5 of the main routine. . That is, steps Sd1 to Sd1 of the above-described tone generation processing routine.
The timbre of the "main voice", that is, the timbre switch VS in the above example, via Sd9 (see FIGS. 8 and 9).
Sound is produced according to the tone color selected by W2.

Next, in step Sd10, it is determined whether or not the flag value of the register DUALFLG is "1". In this case, since the mode is the dual mode, the determination result is "YES", and the process proceeds to step Sd11. In step Sd11, the tone color data corresponding to the tone color number of the "sub voice" stored in the register SUBV is RO.
It is read from M6 and transferred to the tone generation channel determined in step Sd2 described above. In this example,
The tone color data VOICE3 is transferred to the tone generation channel. Then, when the operation proceeds to step Sd12, the pitch of the key code KC corresponding to the key pressing operation is set in the register TC.
After the touch data set to HON and the key-on signal Kon are sent to the sounding channel assigned to the sound source and sound is generated, this sounding processing routine is completed, and the process returns to the main routine.

As described above, when the embodiment is in the dual mode, the desired two tones are set as the "main voice" and the "sub voice" prior to the performance, and the performance operation is performed after that. A musical sound is formed by these two tones simultaneously being sounded.

C. Split mode In this case, when the performer operates the mode switch SPLIT (see FIG. 2) arranged on the panel surface, the operation is detected by the key switch scanning process (step Sa2), and subsequently, the setting display of step Sa4. The process is executed. As a result, the CPU 5 activates the setting display processing routine (see FIG. 6) and proceeds to step Sb2. Then, when the process proceeds to step Sb2, the split switch processing routine shown in FIG. 11 is activated, and the process proceeds to step Sf1.

Basically, the split switch process is
This is a routine for shifting to and canceling the split mode by pressing the mode switch SPLT.
In step Sf1, it is determined whether the flag value set in the register SFLG1 is "0". The flag value of this register SFLG1 is an internal flag in the split switch processing routine, and its initial value is "0". Then, in the initial value state, the register SFLG1 =
Since it is "0", the determination result here is "YES", and the process proceeds to the next step Sf2.

In step Sf2, the mode switch SP
It is determined whether the LIT operation is an on event.
Here, when it is not the on event, this routine is completed. On the other hand, if the event is an on event, the determination result is “YES” and the process proceeds to step Sf3. In step Sf3, as described above, the flag value of the register SFLG1 is set to "1", and this routine is once completed.
The process returns to the setting display processing routine (see FIG. 6).

In this way, with the register SFLG1 set to "1", the process of the CPU 5 returns to the split switch process routine again. Then, at this time, the determination result of the above-mentioned step Sf1 becomes “NO”, and the process proceeds to step Sf4. In step Sf4, it is determined whether the flag value of the register SPLITFLG is "0". Then, in this case, since the split mode is not set, the determination result is "YES" and the process proceeds to the next step Sf5.

In step Sf5, the register SPLTP
Of the key, that is, the key code of the key (hereinafter, referred to as a split key) that is a division point at the time of dividing the key range, which will be described later, is read out and displayed on the display unit ND (see FIG. 2). Next, in step Sf6, the register TI
Set the flag value "1" in M3ON. This flag value becomes a start flag of a timer for 3 seconds which will be described later. Next, in steps Sf7 to Sf8, the mode switch S
The LED 2 arranged corresponding to PLIT is turned on, and the flag value of the register SPLITFLG is set to "1". As a result, the split mode is set.

Next, at step Sf9, the flag value of the above-mentioned register SFLG1 is set to "0", and the routine proceeds to the next step Sf10. In step Sf10, considering the case where the previous mode is the dual mode described above,
The flag value of the register DUALFLG is set to "0", and the LED 1 (see FIG. 2) is turned off. Then, in step Sf11, the LEDs corresponding to the tone color numbers respectively stored in the registers MAIV and SUBV, that is, the "main voice" and the "sub voice" set in the above-mentioned dual mode are turned on, and this routine is completed. Then, the process returns to the setting display processing routine (see FIG. 6).

When the processing of the CPU 5 returns to the setting display processing routine, the split mode is set, so that the result of the determination in step Sb3 is "YES", and the process proceeds to the next step Sb4. When the process proceeds to step Sb4, the split point setting routine shown in FIG. 12 is started, and the process of the CPU 5 proceeds to step Sg1. The split point setting process is for determining the above-mentioned split key.

First, in step Sg1, it is determined whether or not the mode switch SPLIT is set to the ON state. Then, since it is set to the ON state here, the determination result is "YES", and the next step Sg2
Proceed to. In step Sg2, it is determined whether or not the flag value set in the register FLG1 is "1". The register FLG1 is set to "1" when the split key is set, and is set to "0" when the split key is not set. So in this case,
Since the split key has not been defined yet, the determination result is "YES", and the process proceeds to the next step Sg3.

In step Sg3, it is determined whether or not there is a key depression operation. Here, for example, when the performer presses a key (split key) which is a key range division point, this step S
The determination result in g3 is "YES", and the next step S
Go to g4. Then, in step Sg4, the key code KC corresponding to this key depression is written in the register SPLTP. This determines the split key. Next, at step Sg5, the note name of the split key stored in the register SPLTP is displayed on the display unit ND (see FIG. 2). On the display portion ND, for example, "C3" is displayed as the note name of the split key.

Next, when proceeding to step Sg6, "1" is set as a flag value in the register TIM3ON. In this register TIM3ON, a flag value for starting a timer for 3 seconds which functions by an interrupt process described later is set, and the timer is started for 3 seconds from the time when "1" is written. Then, step Sg7
When the process proceeds to Sg8, the "main voice" and the "sub voice" set in the above-described dual mode are assigned to the right key range and the left key range divided by the split key. That is, in step Sg7, the tone color number stored in the register SUBV is set in the register LV, and the "sub voice" is assigned to the left key range (low tone side). Then, in step Sg8, the register MA
The tone color number stored in the INV is set in the register RV, and the "main voice" is assigned to the right key range (treble side).

When the split key is set in the split mode and the tone color is assigned to each key range in this way, the process proceeds to step Sg9, and the above-mentioned register FLG1 is set.
The flag value of is set to "1". Further, step Sg10
When the process proceeds to step 1, the flag value "1" is written in the register SPLTON to indicate that the split mode is in the on state, and this routine is completed.

Next, when the player presses and releases the keys in the split mode, the tone generation channel is assigned and the touch data TCH is generated in the tone generation processing routine (FIGS. 8 and 9). . Then, the processing of the CPU 5 is step S of the processing routine.
Proceeding to d7, in this case, since the flag value of the register SPLITFLG is "1", the determination result here is "N".
O ”, and the process proceeds to step Sd13. Step Sd1
At 3, it is determined whether the pressed key code KC is equal to or more than the split key stored in the register SPLTP described above.

If the key code KC is greater than or equal to the split key, the determination result is "YES", and the flow advances to step Sd14. Then, in this case, assuming that the right key range is pressed, the corresponding tone color data is read from the ROM 7 by referring to the tone color number of the "main voice" stored in the register RV, and transferred to the assigned tone generation channel. To do. On the other hand, if not, the determination result is “NO”, and the process proceeds to step Sd15. In this case, assuming that the left key range is depressed, the corresponding tone color data is read from the ROM 7 by referring to the tone color number of the "sub voice" stored in the register LV and transferred to the assigned tone generation channel. Then, thereafter, through the steps Sd9 to Sd12 described above, the sounding process by the "main voice" is performed when the right key range is pressed, and the sounding process by the "sub voice" is performed when the left key range is pressed.

By the way, in the above description, the tone generation processing is performed using the "main voice" and the "sub voice" set in the dual mode. Therefore, next, a tone color setting operation performed in this split mode will be described. In this case, first, the performer selects the tone color switch VS.
When any of W1 to VSW5 is operated, the above-described tone color setting routine (see FIG. 7) is started, and step Sc
The "main voice" tone color is selected through 1 to Sc7.

On the other hand, when the "sub-voice" tone color is selected, the tone color switch is operated while pressing the mode switch SPLIT. That is, the above-mentioned step Sc
In No. 2, it is determined whether or not the mode switch SPLIT is in the off state, but since it is in the on state while the mode switch SPLIT is pressed, the determination result is "NO", and the process proceeds to step Sc15. In step Sc15, it is determined whether the flag value of the register SPLITFLG is "1". Then, the flag value is "1" here, and the determination result is "YES", and the process proceeds to step Sc16. In step Sc16, the tone color number corresponding to the selected tone color switch is registered in the register SUBV.
Then, in step Sc17, the LED (see FIG. 2) arranged corresponding to the selected tone color switch is turned on.

As described above, in the split mode, the tone color designated by simply operating the tone color switch is registered in the register MAINV as the "main voice". On the other hand, the registration of the "sub voice" is specified by the tone color switch operated while pressing the mode switch SPLIT.

Next, the split key changing operation and the tone color changing operation between the key ranges will be described. In this case, the split key is set through steps Sg1 to Sg10 described above. That is, when the performer presses the mode switch SPLIT to perform a key-depressing operation while maintaining the ON state, the depressed key is set as a new split key. Thus, the split key is set by the player performing the first key depression operation while pressing the mode switch SPLIT. In addition,
This split key setting operation is effective not only in the split mode but also in other performance modes.

In this way, when the split key is set based on the first key depression operation, the split point processing routine is once completed, and then the mode switch SPLI.
When T is pressed, the routine is started again. Then, in this case, since the flag value of the register FLG1 is "1", the determination result of step Sg2 is "NO", and the processing of the CPU 5 proceeds to step Sg11. In step Sg11, it is determined whether all the keys are in the off state. Here, when all the keys are in the off state, that is, when the second key depression operation described later is not performed, the process proceeds to steps Sg12 to Sg13 and the register FL is entered.
Both flag values of G1 and the register SPLTON are set to "0", respectively, and this routine is reset.

On the other hand, when the player performs the second key depression operation, the process proceeds to step Sg14. Step Sg14
Then, it is determined whether or not there is the same key depression as the key code stored in the register SPLTP. That is, it is determined whether or not the player continues the first key depression operation while turning on the mode switch SPLIT. If the key is pressed differently, it is determined that the operation is not a tone color replacement operation, which will be described later, and the determination result is "NO", and this routine is completed.

On the other hand, if the first key depression operation is being continued, the process proceeds to the next step Sg15. In step Sg15, it is determined whether or not the player has performed a second key depression operation. When the second key depression operation is performed, the result of this determination is "YES", and the next step Sg16
Proceed to. In step Sg16, it is determined whether the key code KC corresponding to the second key depression operation is greater than or equal to that stored in the register SPLTP.

Here, when KC ≧ SPLTP, that is, when the key located on the right side of the split key is pressed (second key press), the determination result is “YES”, and the processing of steps Sg17 to Sg20 is performed. Is done. In steps Sg17 to Sg20, the "sub-voice" tone color is assigned to the left key range, and the "main voice" tone color is assigned to the right key range. Further, in order to further indicate that the "main voice" is assigned to the right key range side (treble side), the LED (light emitting element) DO of the display ND (see FIG. 2) is displayed.
Turn off TL and turn on DOTR. And after this,
This routine is completed by setting the flag value of the register SPLTON to "1".

On the other hand, when the key located on the left side of the split key is pressed (second key press), the determination result of step Sg16 becomes "NO", and step Sg
21 to Sg24. This step Sg21 to Sg2
In 4, the tone color of "Main Voice" is assigned to the left keyboard range,
Assign the "Sub Voice" tone to the right range. And
Further, "1" is subtracted from the key code stored in the register SPLTP, and this routine is completed through step Sg20. In step Sg23, the key code stored in the register SPLTP is decremented by "1" because the split key is included in the "main voice", so the key code is lowered by a semitone.

As described above, the mode switch SPLIT
When the first key depression is performed while turning on, the split key for dividing the key range is determined, and when the second key depression is subsequently performed, the tone color is switched between the key ranges. That is, when the second key is pressed on the right side (treble side) of the split key, the right key range becomes the "main voice" and the left key range becomes the "sub voice", while the left side of the split key (low side).
When the second key is pressed in, a tone color opposite to this is assigned. Further, such a tone color changing operation is displayed by the lighting state of the LED of the display ND.

By the way, as described above, when the split key is set, the timer is started for 3 seconds, whereby the note name of the split key is displayed on the display section ND for 3 seconds. The operation of the timer interrupt processing routine that realizes the timer for 3 seconds will be described below. First, when the CPU 5 receives a timer interrupt signal supplied every 10 msec from the outside, it starts the timer interrupt processing routine shown in FIG. 13, and proceeds to step Si1. In step Si1, it is determined whether or not the flag value of the register TIM3ON is "1". This flag value is set when the split key is set, and is set in step Sf6 (see FIG. 11) and step Sg6 (see FIG. 12) described above.

Here, if the flag value is not "1", the process proceeds to step Si2 to perform other timer interrupt processing and complete this routine. on the other hand,
When the flag value is "1", the determination result is "YES" and the process proceeds to the next step Si3. In step Si3, it is determined whether the flag value of the register TIM3FLG is "0". This register TIM3
A flag value "1" is set in the FLG when the timer is started for 3 seconds, and "0" is set when the timer is not started.

If the flag value is "0", the result of the determination is "YES", and the next step Si
Go to 4. On the other hand, when the timer is already running for 3 seconds, the result of this determination is "NO", and the routine proceeds to step Si6 described later. Next, when proceeding to step Si4, "300" (a value corresponding to 3 seconds) is stored in the register TIM3CNT.
Is set, and subsequently, in step Si5, the register T
The flag value of IM3FLG is set to "1" and the timer is started for 3 seconds.

In this way, when the next timer interrupt signal arrives while the timer is started for 3 seconds, step Si3
The result of the determination is "NO", and the process proceeds to step Si6.
In step Si6, the set value of the register TIM3CNT is decremented by 1. Then, in step Si7,
It is determined whether the decremented value is "0", that is, whether 3 seconds have passed. Here, when 3 seconds have not elapsed, the determination result is “NO”, and this routine is completed. On the other hand, when 3 seconds have elapsed, the determination result is “YES”, and the process proceeds to step Si8.

At step Si8, the register MAI
The tone color number of the "main voice" written in the NV is displayed on the display unit ND composed of 7-segment LEDs. Then, after that, the process proceeds to steps Si9 to Si10 to set both flag values of the registers TIM3ON and TIM3FLG to "0", and this routine is completed.

Next, the operation for ending this split mode will be described. In the split switch processing routine (see FIG. 11) described above, the mode switch SP is set during the split mode (SPLITFLG = 1).
When LIT is pressed, the register SFLG = 1 is set in steps Sf1, Sf2 and Sf3, and when returning to this routine again, the process proceeds from step Sf1 to step Sf4.
In this case, the determination result in step Sf4 is “NO”, and the process proceeds to step Sf12. In step Sf12,
It is determined whether the mode switch SPLIT is set to the off state. Then, if it is set to the off state here, the determination result is "YES", and step S
Go to f13.

At step Sf13, the register SPLT is set.
Whether the ON flag value is "0", that is, the above-mentioned split point processing routine (see FIG. 12)
It is determined whether or not is reset. In this case, since it has been reset, the judgment result is "YES",
It proceeds to the next step Sf14. Then, step Sf1
In 4, the flag value of the register SPLITFLG is set to "0".
Then, in step Sf15, the LED 2 arranged corresponding to the mode switch SPLIT (see FIG. 2).
Turn off.

Next, when proceeding to step Sf16, the flag value of the register SPLTON is set to "0", further, at step Sf17, the flag value of the register SFLG1 is set to "0" and proceeding to step Sf18. In step Sf18, only the tone color LED corresponding to the tone color number stored in the register MAINV is turned on. As described above, when the split mode is turned off, the normal mode described above is entered, and a single note is sounded by the entire key range "main voice".

D. Touch conversion / internal sound source drive Next, the touch conversion function performed in this embodiment will be described. Note that, here, as shown in FIG. 14, after a desired touch characteristic is added to the touch data TCH corresponding to the key pressing strength, the mode is supplied to the internal sound source (tone generating unit 8).

In this case, when the performer operates, for example, the tone color switch VSW1 while pressing the set switch SET1 (see FIG. 2) in a predetermined performance mode, such switch operation is detected, and the processing of the CPU 5 is executed as shown in FIG.
The process proceeds to step Sb6 of the setting display processing routine shown in.
Then, when the processing proceeds to step Sb6, the processing of the CPU 5 is
The velocity table selection setting processing routine shown in FIG. 15 is started, and the process proceeds to step Sj1.

First, in step Sj1, it is determined whether or not any one of the tone color switches VSW1 to VSW5 is an on event. In this case, since the tone color switch VSW1 has been operated, the determination result is "YES", and the process proceeds to the next step Sj2. In step Sj2, it is determined whether or not the number of the tone color switch set to the ON state is "VSW5". Here, the tone color switch VSW
Since No. 5 is not turned on, the determination result is "NO", and the process proceeds to step Sj3. In addition, this tone color switch V
When the SW5 is operated, as described above, the operation is performed when canceling the touch conversion function.

Next, in step Sj3, it is determined whether or not the set switch SET1 is on. In this case, since the set switch SET1 has been pressed, the determination result is "YES", and the next step S
Go to j4. In step Sj4, the start address value TTBLA ₀ (FIG. 3) of the touch conversion table selected corresponding to the operated tone color switch number, in this example, the touch conversion table TTBL1 corresponding to the tone color switch VSW1.
(See) is set in the register KEYTBL to complete this routine and return to the main routine.

The touch conversion table TTBL1 selected in this way is provided for touch conversion in the tone generation processing routine (see FIG. 8) described above. That is, for example, when the player performs a key depression operation, touch data TCH corresponding to the key depression strength at this time is generated,
Then, a sound generation processing routine is executed. In this tone generation processing routine, as described above, steps Sd1 to Sd3 are performed.
After that, the process proceeds to step Sd5, and it is determined whether the set value of the register KEYTBL is "0". Then, in this case, as described above, the register KEYTBL stores the start address value TTB of the touch conversion table TTBL1.
Since LA ₀ has been written, the determination result is “NO” and the process proceeds to step Sd16.

At step Sd16, the register KE
The touch data TCH is offset to the head address value TTBLA ₀ stored in the YTBL, the read data is read as the read address of the touch conversion table TTBL1, and the read converted touch data TCHON is supplied to the tone generating unit 8 which is an internal sound source. . Therefore, in this example, the touch data TC generated in response to the key depression operation is generated.
This means that H is given a predetermined touch characteristic by the touch conversion table TTBL1 and a desired touch tone is formed.

To cancel such a touch conversion function, as described above, the tone color switch VSW5 is pressed while the set switch SET1 is being pressed. As a result, the velocity table selection setting routine (see FIG.
5), the judgment result in step Sj2 is “YE
S ”, and the process proceeds to step Sj7. In step Sj7, it is determined whether or not the set switch SET1 is in the on state. In this case, since the switch SET1 has been pressed, the result of this determination is "YES", and the flow advances to step Sj8. Then, in step Sj8, the set value of the register KEYTBL is reset to "0",
The touch conversion function is canceled.

E. Touch conversion / MIDI output Next, the mode of supplying the output of the touch conversion table to the external sound source via the MIDI interface 2 (see FIG. 14).
About. In this case, when the performer operates, for example, the tone color switch VSW2 while pressing the set switch SET2 (see FIG. 2) under a predetermined performance mode,
Such a switch operation is detected, and the processing of the CPU 5 proceeds to steps Sj1 to Sj3 described above.

Then, in step Sj3, it is determined whether or not the set switch SET1 is in the ON state. In this case, the determination result is “N
O ”, and the process proceeds to step Sj5. In step Sj5, it is determined whether or not the set switch SET2 is turned on. In this case, since it is turned on, the process proceeds to step Sj6. Next, at step Sj6, the head address value TTB of the touch conversion table TTBL2 corresponding to the tone color switch VSW2 in this example, which is selected corresponding to the operated tone color switch number.
LA ₀ (see FIG. 3) is set in the register MIDITBL to complete this routine and return to the main routine.

Here, the processing of the CPU 5 returns to the main routine (see FIG. 5), and the MI of step Sa3 described above is returned.
When the DI process is activated, the process proceeds to step Sk1 of the MIDI process routine shown in FIG. This step S
At k1, a reception process of receiving a MIDI signal supplied via the MIDI interface 2 is performed. Next, when the processing proceeds to step Sk2, the key event transmission processing routine is started, which causes the CPU 5 to perform the processing shown in FIG.
Step Sm of the key event transmission processing routine shown in FIG.
Go to 1.

By the way, the key events corresponding to the performance operation of the performer are sequentially written in the event buffer area BE1 of the RAM 7 as described above. And
In this key event transmission processing routine, a MIDI standard signal corresponding to the key event read from the buffer area BE1 by the FIFO method is transmitted to the external MIDI musical instrument. Hereinafter, such processing will be described.

That is, first, at step Sm1, it is determined whether or not there is a key event. Here, if there is a key event, the determination result is “YES”,
It proceeds to the next step Sm2. In step Sm2, it is determined whether the detected key event is key-on.
If the key is not turned on, the process proceeds to step Sm3 to send a key off event.

On the other hand, if the detected key event is key-on, the process proceeds to step Sm4. Step Sm4
Then, it is determined whether or not the content of the register MIDITBL is "0". In this case, as an example described above, since the head address value TTBLA ₀ of the touch conversion table TTBL is written in the register MIDITBL, the result of the determination is “YES”, and the process proceeds to step Sm5. Next, in step Sm5, the register MIDIT
The touch data TCH is offset to the head address value TTBLA ₀ stored in BL, and this is read as the read address of the touch conversion table TTBL1. Then, the converted touch data read according to this is written in the register TCHM, and the process proceeds to step Sm7.

On the other hand, when the set value of the register MIDITBL is "0", that is, when the touch conversion is not performed, the determination result of the above step Sm4 is "YE."
S ”, the process proceeds to step Sm6, the touch data TCH generated at the time of key-on is set in the register TCHM, and the process proceeds to step Sm7. In step Sm7, the key code KC corresponding to the key pressing operation and the touch data set in the register TCHM are transmitted as MIDI information as the key-on event data.

As a result, the touch data TCH generated in response to the key depression operation is converted to touch data having a desired touch characteristic based on the selected touch conversion table, together with the key code KC and the external MIDI musical instrument. Sent to. Then, to release the touch conversion function when performing this MIDI output, set switch SET
The tone color switch VSW5 is operated while pressing down 2. As a result, the determination result in step Sj7 of the velocity table selection setting routine (see FIG. 15) described above becomes "NO", and the process proceeds to step Sj9. Step S
At j9, it is determined whether or not the set switch SET2 is turned on. Then, in this case, since it is in the ON state, the determination result is “YES”, and the process proceeds to step Sj10. Next, in step Sj10, the set value of the above-mentioned register MIDITBL is reset to "0" to cancel the touch conversion function.

As described above, in this embodiment, a plurality of touch conversion tables TTBL1 to TTBL4 are provided, and these tables are used for internal sound source sound generation and external sound source sound generation connected via the MIDI interface 2. It is possible to assign to and independently of each other. By doing so, desired touch characteristics can be added to the touch data TCH supplied to the internal sound source and the external sound source. By doing so, the touch characteristics of the internal sound source and the external sound source can be made uniform. Or conversely, it is possible to obtain a playing effect, such as intentionally differentiating the touch characteristics of the two to produce a tone color change.

[0096]

As described in the foregoing, according to the invention described in claim 1, you have selected the first and second tones even without least Ri by the tone color selection means by the mode instructing means
This is set on the keyboard when the tone assign mode is instructed.
When the key range on the high side of the divided point
The first tone is assigned to the key range on the sound side, and
The second tone is assigned to the low-pitched key range, and the mode
When the tone color allocation mode is instructed by the instructing means
When the key range on the low-pitched side of the dividing point is pressed,
Allocate the first tone to the key range lower than the dividing point of
At the same time, the second tone color is assigned to the key range on the high tone side of the division point . That is, the tone colors can be exchanged between the keyboard regions divided at the keyboard region dividing points by the keyboard operation, so that the tone colors can be assigned to the respective keyboard regions very easily. In addition,
According to the invention described in claim 2, the division point is arbitrarily set.
Since it becomes possible, on the keyboard, the above-mentioned first and second
You can freely set the range to which the tones of
It

[Brief description of drawings]

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

FIG. 2 is a diagram showing an example of a panel layout in the same embodiment.

FIG. 3 is a memory map diagram showing a storage area of a ROM 6 in the embodiment.

FIG. 4 is a memory map diagram showing a storage area of a RAM 7 in the embodiment.

FIG. 5 is a flowchart showing the operation of the main routine in the embodiment.

FIG. 6 is a flowchart showing an operation of a setting display processing routine in the embodiment.

FIG. 7 is a flowchart showing the operation of a tone color setting processing routine in the embodiment.

FIG. 8 is a flowchart showing the operation of a sound generation processing routine in the embodiment.

FIG. 9 is a flowchart showing the operation of a sound generation processing routine in the embodiment.

FIG. 10 is a flowchart showing the operation of a dual switch processing routine in the embodiment.

FIG. 11 is a flowchart showing the operation of a split switch processing routine in the embodiment.

FIG. 12 is a flowchart showing the operation of a split point processing routine in the embodiment.

FIG. 13 is a flowchart showing the operation of a timer interrupt processing routine in the embodiment.

FIG. 14 is a diagram for explaining an outline of a touch conversion function in the embodiment.

FIG. 15 is a flowchart showing the operation of a velocity table selection setting routine in the embodiment.

FIG. 16 is a flowchart showing the operation of a MIDI processing routine in the embodiment.

FIG. 17 is a flowchart showing the operation of a key event transmission processing routine in the embodiment.

[Explanation of symbols]

1 ... keyboard, 2 ... MIDI interface, 3 ... panel switch, 4 ... indicator, 5 ... CPU, 6 ... ROM, 7 ... R
AM, 8 ... Musical tone generating section, VSW1 to VSW5 ... Tone color switch (tone color operator), SPLIT ... Mode switch (division mode setting operator).

Claims (2)

(57) [Claims] 1. A divided into key ranges of multiple <br/> number by at least one division point the keyboard, an electronic musical instrument to sound operation by assigning different tones to the divided key ranges by, first even without least 1 And a tone color selecting means for selecting the second tone color, a mode instructing means for instructing a tone color assigning mode, and a tone color assigning mode for instructing the tone color assigning mode.
If the key is in
When a key operation is performed,
The first tone color is assigned to the key range and the division point
The second tone color is assigned to the bass range of the
When a key is pressed to push the key range lower than the point
Divide the first tone color into the low-pitched key range of the division point.
The second key is applied to the key range on the treble side of the dividing point.
Electronic musical instrument characterized by comprising a tone assignment means for assigning tones. 2. The electronic musical instrument according to claim 1, wherein
An electronic device characterized in that the division points can be set arbitrarily
Musical instrument.