JPH01170993A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To facilitate the operation by switching the generation conditions of a musical tone according to touch response detection information obtained from a depressed key. CONSTITUTION:The level of the touch response detection information S1 obtained from each key 2 provided as a tone pitch specifying means is controlled to a value corresponding to the operation of a player by touch response operation when the player depresses the key. Here, when a touch response manipulated variable corresponding to the key 2 which is depressed reaches a specific value, the player can easily switches the musical tone generation conditions only by pressing the key 2 by switching the generation conditions of the musical tone, and a switching operation means dedicated to the switching of the generation conditions, therefore, need not be provided specially. Consequently, the switching operation of the musical tone generation conditions such as automatic playing patterns, etc., is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic musical instrument, and is particularly suitable for application to an electronic musical instrument in which a touch response effect can be applied to each key.

[Summary of the invention]

The present invention is an electronic musical instrument in which a touch response effect can be applied to each key. Operation can be made even easier.

[Conventional technology]

Conventionally, as a touch response device, initial touch controls the volume, pitch, timbre, etc. of musical tones generated by key press operations for each key according to the time from the key press operation until the key switch is turned on. In addition to providing a response means, an aftertouch response means is provided to control the volume, pitch, tone color, etc. of the musical sound being generated for each key by changing the key press under the key press conditions. An electric/child musical instrument has been proposed (Japanese Unexamined Patent Publication No. 105692/1983).

This type of electronic musical instrument has the advantage of being able to add an initial touch effect and an aftertouch effect (these effects are collectively referred to as a touch response effect) to the musical sound for each key, making it possible to express the musical sound even more subtly. be.

[Problem that the invention seeks to solve]

However, when an electronic musical instrument that allows touch response effects to be applied to each key is provided with automatic performance means that can automatically perform multiple performance patterns, conventionally, touch response detection means for the keys Separately, a selection operator dedicated to automatic performance pattern selection is provided on the panel operation section, which makes the overall configuration complex and allows the performer to press and operate the keys on the keyboard while playing. If you try to change the automatic performance pattern, you have to stop pressing the -1 key and switch the automatic performance pattern selection controller, which makes the performance operation complicated and makes it difficult to change the automatic performance pattern. Because you have to release the key each time you switch,
There is an inconvenience in performance that musical tones that should normally be generated continuously are interrupted.

This invention has been made in consideration of the above points, and aims to propose an electronic musical instrument that can further simplify the operation of switching musical tone generation conditions such as automatic performance patterns by pressing keys. It is.

[Means to solve the problem]

In order to solve this problem, in the present invention, by pressing the key 2 as a pitch specifying means, a corresponding pitch is specified, and a touch response operation is performed for each key pressed. In the electronic musical instrument 1 that is configured to be able to provide a musical tone, when the touch response detection information S1 reaches a predetermined level based on the touch response detection information S1 obtained from the pressed key 2, The generation conditions can be changed.

[Effect]

The level of touch response detection information obtained from each key 2 provided as pitch specifying means becomes a value corresponding to the player's operation when the player performs a touch response operation when pressing the key.

Therefore, by configuring the system so that the musical tone generation conditions are switched when the touch response operation amount for the key being pressed reaches a predetermined value, the performer can easily generate musical sounds just by pressing the keys. The generation conditions can be changed over, thereby eliminating the need for a separate switching operation means for switching the tone generation conditions.

〔Example〕

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

[1] First Embodiment In FIG. 1, 1 indicates an electronic musical instrument as a whole, and key information KIN input from a keyboard section 2 and a panel operation section 3
Based on the program data stored in the program memory 4 having a ROM configuration, the operator information PIN input from the main routine RTO1 shown in FIG. While being processed by a central processing unit (CPU) 5 that executes a tempo processing program RT2 shown in FIG.

In the case of this embodiment, the electronic musical instrument 1 is configured to be able to generate a plurality of musical tones, for example, four, at the same time, and when a plurality of keys are pressed simultaneously, the CPU 5 transfers the data of each key to a sound generation channel consisting of four time slots. By allocating each data to the corresponding time slot, time-division musical tone signal formation processing is executed at the timing of the corresponding time slot.

The CPU 5 uses the musical tone signal control information M thus formed.
By supplying the musical tone signal SND to the musical tone signal generator (TG) 8 via the bus 6, the musical tone signal SND is transmitted to the sound system 9.
, thereby generating a plurality of musical tones corresponding to the pressed keys.

In this embodiment, as shown in FIG. 3, the pitches CI, ..., C3, ... corresponding to 61 keys are as follows.
・For Bs and Ci, the key code is 24, respectively.
. . . , 48, . . . , 83.84 are assigned.

Each key of the keyboard section 2 is provided with an aftertouch sensor consisting of a pressure detection element, and its detection output S1 is provided to an aftertouch detection circuit 11. The aftertouch detection circuit 11 converts the pressing force represented by the detection output S1 input from each key into aftertouch data AFT. CPU
5 takes in the aftertouch data AFT, assigns it to the jth (j=1 to 4) sounding channel, and then outputs the assigned aftertouch data AFTj (j=
1 to 4) are stored in the register section 7 via the bus 6 for each channel.

In addition, when the CPU 5 receives the aftertouch interrupt signal S2 and the tempo interrupt signal S3 from the timer/tempo generator 12 at predetermined time intervals, the CPU 5 executes the aftertouch processing programs RT1 and 6 of FIG. 5, respectively. By executing the tempo processing program RT2 shown in the figure, an aftertouch effect is applied to musical tones or musical tones of an automatic performance pattern are generated.

In FIG. 4, the CPU 5 starts the processing of the main routine RTO when the electronic musical instrument 1 becomes operational, and initializes the electronic musical instrument 1 as a whole in step SPI. At this time, each register in the register section 7 (FIG. 2) is reset.

Subsequently, the CPU 5 enters an automatic performance start detection processing loop from step SP2, and detects that the automatic performance start switch 3A (FIG. 1) provided on the panel operation section 3 has been operated, that is, an on event has occurred. judge things. If a positive result is obtained here, the CPU 5 moves to step SP3, and based on the automatic performance flag data RUN of the automatic performance flag data register REG4 (FIG. 2) of the register section 7, the following formula % formula % (1) is calculated. Perform calculations. Here, automatic performance flag data RUN
is 1-bit flag data, and when this automatic performance flag data RUN is logic "1", it indicates that the performer has designated automatic performance mode. Therefore, when the CPU 5 executes the calculation of equation (1), automatic performance is started. The flag data RUN has its logic level inverted, and thus when the automatic performance mode is in the automatic performance mode (or when the automatic performance mode is not present), by operating the automatic performance start switch 3A, Command information representing switching to the performance mode state) is taken into the register section 7.

At this time, in the next step SP4, the CPU 5 executes key-off processing so as to stop the generation of musical tones based on the musical tone information held so far in the musical tone signal generating section (TG) 8 all at once, and then proceeds to step SP5. .

This step SP5 is a step of resetting the tempo clock data CLK written in the tempo clock data register REGII of the register section 7 to the value 0.
In this case, the tempo clock data CLK consists of 32 clock pulses per bar period, as shown in FIG. 7(B).
In other words, divide by the 0th to 31st clock pulses,
The CPU 5 stores the tempo clock data CLK representing the clock pulse numbers 0 to 31 that change sequentially in the cycle of the clock pulse in the tempo clock data register REGll.
In this way, the time positions of 32 clock pulses within the period of one bar are specified by the tempo clock data CLK.

In this embodiment, the tempo clock data C'LK is CLK=0.8.16.24 as shown in FIG. 7(A).
When , the time signatures of the 1st, 2nd, 3rd, and 4th beats are shown sequentially.

Thus, in the above step SP5, the CPU 5 writes CLK=0 to the tempo clock data CLK of the tempo clock data register REGII, which means that the automatic performance mode clock has been reset to the state where the first beat of one measure has started. It means.

The CPU 5 thus completes the automatic performance start detection processing loop and enters the key-on event processing loop from the next step SP6.

On the other hand, if a negative result is obtained in the above-mentioned step SP2 (this means that the performer did not operate the automatic performance start switch 3A), CP, 0
5 is step S without performing steps SP3 to SP5.
Jump to P6.

Step SP6 is a step in which it is determined that a key is newly pressed, that is, a key-on event has occurred. '), the CPU 5 moves to step SP7 and registers the key-on data register REG of the register section 7 (FIG. 2).
Based on key-on data KON1 to KON4 consisting of 1-bit flag data written in
(sound generation channels having j=1 to 4) is searched for, and assigned channel data ASS representing the sound generation channel number to be assigned to the vacant channel is stored in the assigned channel data register REG12 of the register section 7.

Subsequently, in the next step SP8, the CPU 5 sends the key-on data KONj and key code data KCj of the logic rlJ to the j-th sound generation channel specified by the assigned channel data ASS among the key-on data register REG1 and the key code data register REG2. Write.

Thus, the key code data KCj and the key-on data KONj of logic "1", which is data indicating that the key with the key code is being pressed, are stored in the register section 7.
It will be held at

Subsequently, in step SP9, the CPU 5 determines whether the automatic performance flag data RUN written in the automatic performance flag data register REG4 is logical "1".

If a positive result is obtained here (this means that automatic performance mode has been specified by the performer),
In the next step 5PIO, the CPU 5 stores the chord data CHD representing the chord of the chord formed by the plurality of keys being pressed simultaneously into the chord data register REG.
Write in 14.

For example, as shown in FIG. 7(D), the pitch names C and E.

When the G (Do, Mi, G) keys are pressed, C
After PU5 writes chord data CHD representing a C major chord into chord data register REG14, the process moves to step 5P12.

On the other hand, if a negative result is obtained in the above-mentioned step SP9 (this means that the automatic performance mode is not designated by the performer), the CPU 5 moves to step 5PII and stores the assigned channel data register REG12. In the time slot corresponding to the channel with the sound generation channel number j held as the assigned channel data ASS, the corresponding key code data K held in the key code data register REG2
After generating the corresponding musical tone from the sound system 9 by transmitting Cj to the musical tone signal generator (TG) 8,
The process moves to step 5P12.

In this way, the CPU 5 ends the key-on event processing loop, and in the automatic performance mode, executes the process of importing the chord data CHD without generating the musical tone of the pressed key. If no mode is designated, a process is executed to immediately generate the musical tone of the pressed key, and then the process moves to the next step 5P12.

This step 5P12 is a step for determining that the key that had been pressed is now in a new state of being released, that is, that a key-off event has occurred, and the CPU 5
If a positive result is obtained in step 5P12, the key-off event processing loop is entered.

On the other hand, if a negative result is obtained in step 5P12 (this means that there was no new key-off event), the CPU 5 moves to step 5P13 and executes other processing (for example, tone selection processing, etc.). After that, the process returns to step SP2 described above, and then a new automatic performance start switch-on event, key-on event,
or step 5P2- unless a key-off event occurs.
The loop of 3P6-3PI 2-3PI 3-3P2 executes processing to continue the sound generation operation in response to the player's performance.

In this sound generation state, when the aftertouch interrupt signal S2, which is a timer interrupt signal, is applied to the CPU 5 from the timer/tempo generator 12, the CPU 5 executes the aftertouch processing program RTI shown in FIG.

First, the CPU 5 enters the aftertouch amount evaluation processing loop from step 5P21, and in step 5P21, it specifies the first sounding channel by setting the sounding channel number j to j=1, and also sets the logic "" as pattern change flag data FLG. The pattern change flag data register REG7 (FIG. 2) is reset to the initial state by writing data "0" into the pattern change flag data register REG7 (FIG. 2).

Here, the pattern change flag data FLG is 1-bit flag data, and when it is logic rOJ, it indicates that it is not specified that the automatic performance pattern should be changed, but it is rewritten to logic "1". When the automatic performance pattern is to be changed, this indicates that the performer has specified that the automatic performance pattern should be changed.

After that, the CPU moves to step 5P22, and the first key-on data KONj (j=1) is set to logic rl.
Judge whether it is J or not.

If a positive result is obtained here (this means that the key being pressed is assigned to the j=1st sound generation channel), the CPU 5 executes step 5P2.
3, the key code data KCj (j=1 at this timing) written in the key code data register REG2 is written as the key code KC in the key code register REG5, and then in the next step 5P24, the key code KC is written as the key code KC. Aftertouch data AFT (Fig. 1) obtained from the key corresponding to j = aftertouch data AFTj for the first sounding channel.
Aftertouch data register REG3 as (j=1)
write to.

Next, in step 5P25, the CPU 5 determines whether the automatic performance flag data RUN written in the automatic performance flag data register REG4 is logical "1", and if a positive result is obtained (this means that automatic performance is mode is specified), the CPU 5 moves to step 5P26.

In this step 5P26, the data held by the aftertouch data AFTj (j=1) of the j=1st sound generation channel, that is, the aftertouch amount (representing the pressing force applied by the performer), is stored in the touch threshold data register REG6. If an affirmative result is obtained in the step of determining whether or not the pressure is greater than the written touch threshold data MIN (this means that the performer can press j with a pressure greater than the pressure represented by the touch threshold data MIN). = means that the user is inputting that the automatic performance pattern should be changed by pressing the first key), the CPU 5 moves to step 5P27, and
Set the pattern change flag data FLG written in the pattern change flag data register REG7 to logic "1".
At the same time, the sound generation channel number j=1 is written into the pattern change channel data register REG9 as pattern change channel data CH.

(Then, the processing of the j=1st aftertouch amount evaluation processing loop is completed, so the CPU 5 executes step 5P2.
After adding "+1" to the sound generation channel number j in step 8, it is determined in step 5P29 whether or not the sound generation channel number j after adding "+1" is greater than the number of simultaneous sound generation channels 4.

By the way, if a negative result is obtained in step 5P25 of the above-mentioned aftertouch amount evaluation processing loop (this means that automatic performance mode is not specified).
, the CPU 5 moves to step 5P30 and uses the value of the aftertouch data AFTj (j=1) held in the aftertouch data register REG3 to generate a musical tone signal
G) By controlling the volume of step 8, an aftertouch effect of an aftertouch amount corresponding to the pressing force of the performer is applied, and then the process moves to step 5P28 described above.

Further, if a negative result is obtained in step 5P22 described above (this means that the key being pressed is not assigned to the j=1st sound generation channel), the CPU 5 executes steps SP23 to 5P27. The process jumps to step 5P28.

Furthermore, if a negative result is obtained in the above-mentioned step 5P26 (this means that the pressing force of the player is smaller than the pressing force represented by the touch threshold data MIN), the CPU 5 determines that the player changes the automatic performance pattern. Step 5P27 by determining that there is no attempt to
The process jumps to step 5P28.

Thus, when the j=1st process is completed, the sound generation channel number j is j=2, so the CPU 5 obtains a negative result in step 5P29, returns to the above-mentioned step 5P22, and repeats steps 5P22 to 5P2 again.
The aftertouch amount evaluation processing loop up to step 9 is repeated.

Thereafter, in the same manner, the CPU 5 repeats the above-described aftertouch amount evaluation processing loop until a positive result is obtained in step 5P29, thereby executing the aftertouch amount evaluation processing for the first to fourth pronunciation channels.
As a result, for the tone generation channels for which the pressing force of the performer is greater than the touch threshold data MIN, the tone generation channel number j is held in the pattern change channel data register REG9 as pattern change channel data CH, and at the same time, the pattern change flag data register R is stored.
As pattern change flag data FLG of EG7, logic “
By writing the data "1", information indicating that the performer has inputted the automatic performance pattern to be changed is held.

Subsequently, the CPU 5 enters an automatic performance pattern determination processing loop from step 5P41.

Step 5P41 is the automatic performance flag data register RE
Automatic performance flag data RUN held in G4 is logic "1" and pattern change flag data F held in pattern change flag data register REG7
In the step of determining whether LG is logic "1",
If a positive result is obtained, this means that after the performer specifies the automatic performance mode by operating the automatic performance start switch 3A, the automatic performance pattern should be changed using the keys being pressed. This means that an input operation was performed (step 5P27).

At this time, the CPU 5 moves to step 5P42, sets j=1 as the sound generation channel number j, and writes the value 1 as the pattern change key number data No. into the pattern change key number data register REG8.

After that, the CPU 5 in step 5P43 sets the j=
Key-on data KONj of the first sound channel
(j=1) is logic "1" and the j=1st key code data KCj (j=1) is specified by the pattern change channel data CH held in the pattern change channel data register REG9. key code data KCj (j=
cH).

If a positive result is obtained here, the key code data KC held for the corresponding j = 1st sound generation channel
The key corresponding to j (j=1) is the sounding channel j specified by the pattern change channel data OH.
=CH means that the pitch is higher than the key represented by the key code data KCj.

At this time, the CPU 5 moves to the next step 5P44, adds "+1" to the pattern change key number data No, and then moves to step 5P45. Thus, when the pitch of the key assigned the j=1st sound generation channel is higher than the pitch of the key specified by the pattern change channel data CH, the number of that key is calculated and set as the pattern change key number data NO. Write and hold the pattern change key number data register REG8.

Subsequently, the CPU 5 adds "+1" to the sound generation channel number j in step 5P45, and then determines in step 5P46 whether or not the sound generation channel number j after adding "+1" is greater than the number of simultaneous sound generation channels, 4.

If a negative result is obtained in this step 5P46 (
(This 9 means that the automatic performance pattern determination process has not yet been completed for all sound generation channels j), the CPU 5 returns to the above-mentioned step SP43 and again executes the processing loop of steps 5P43-3P44-3P45 for the corresponding ``9''. The process is repeated for the sound generation channel number j=2 after addition of ``+1''.

Thereafter, in the same manner, the CPU 5 repeatedly executes the automatic performance pattern determination processing loop until an affirmative result is obtained in step 5P46.

Eventually, when a positive result is obtained in step 5P46 (this means that the automatic performance pattern determination process has been completed for all sound generation channels j), the CPU
5 returns to the main routine RTO from step 5P47.

On the other hand, if a negative result is obtained in step 5P43 described above, this means that the pressed key is not assigned to the corresponding sound generation channel j=1, or the performer has an after-effect to change the automatic performance pattern. (means that no touch operation was performed), the CPU 5 jumps to Step 5P44 and returns to Step 5P without adding "+1" to the pattern change key number data No.
Moving on to 45.

Further, if a negative result is obtained in the above-mentioned step SP41 (this means that the automatic performance mode has not been specified or the input operation for changing the automatic performance pattern has not been performed), the CPU 5 performs step 5P48.
Then, the process returns to the main routine RTO.

In this way, the CPU 5 performs steps 5P41 to 5P48.
An automatic performance pattern determination processing loop consisting of the pattern change key number indicating which key from the treble side the channel number specified by the pattern change channel data CH is assigned to the sound generation channel j is determined. A state is obtained in which the data No. is held in the register section 7.

In addition, when the CPU 5 is in the sound generation state due to the automatic performance start processing loop and key-on event processing loop of the main routine RTO, when the tempo interrupt signal S3 is generated in the timer/tempo generator 12, the CP
U5 executes the tempo processing program RT2 shown in FIG.

The tempo processing program RT2 executes processing to select and designate an automatic performance pattern specified by the pattern change key number data No. held in the pattern change key number data register REG8.

In this embodiment, the accompaniment pattern and rhythm pattern are stored in the automatic performance pattern memory 13 (
Accompaniment pattern memory section 13A (Fig. 1)
) and the rhythm pattern memory section 13B (FIG. 9).

The accompaniment pattern memory section 13A (FIG. 8) stores the key code data for the sustain note as pitch data expressed in degrees in the normal pattern memory area FILNO.
O1 and 1st to 4th fill-in pattern memory area F
It is stored in advance in I LNo 1 to FILNO 4 for each rhythm-specific memory unit MEM1 to MEMm (corresponding to the first to m-th rhythm types).

Each pattern memory area FILNOO and FILN
O1 to FILNO4 have memory area sections CHNI to CHN4 corresponding to the first to fourth sound generation channels, and each memory area section CHNI to CHN4 has a time signature of 1 beat to 4 beats (7th O-th to 3 representing diagram (A))
First tempo clock data CLK (Figure 7 (B)
) is configured to store 32 key code data accessed by.

Thus, for example, as described above with respect to FIG. 7(D),
When generating an accompaniment pattern that includes dispersed chords with pitch names C, E, and G, for example, the pitch names C, E are stored in the first, second, and third memory area sections CHNI, CHN2, and CHN3.
, G key codes are assigned as data for degrees 1°, 3°, and 5°.

In the case of the dispersion chord shown in Figure 7 (D), the memory area FILN
OO1F I One of LNO1 to FILNO4,
For example, 1 in the normal pattern memory area FILNOO.
, a pattern P as shown in FIG. 7 (C1) and (C2)
TNI and PTN2 are stored.

In other words, in the memory area CHN1 of the first channel, 0 to 7th (corresponding to the timing of the 1st beat), 1
Add 1' (=C) to the addresses of the 6th to 23rd tempo clock data CLK (corresponding to the timing of the 3rd beat)
Stores key code data.

Also, the Jimori area part of the second channel CHN 2-8~
Key code data of 3'' (=E) is stored at the addresses of the 15th (representing the timing of the second beat) and 24th to 31st (representing the timing of the fourth beat) tempo clock data CLK.

Furthermore, 8 to 8 of the memory area section CHN3 of the third channel
15th (represents the timing of the 2nd beat), 16th to 23rd (represents the timing of the 3rd beat), 24th to 31st (represents the timing of the 4th beat)
Tempo clock data CL (representing the timing of beats)
Store the key code data of 5'' (=C) at address K.

Thus, when the CPU 5 specifies the normal pattern memory area FILNOO of the rhythm-specific memory section MEM1, the CPU 5 generates the patterns PTNI shown in FIGS. 7(C1) and (C2).
and PTN2 are generated by accessing them using the 0th to 31st tempo clock data CLK.

The rhythm pattern memory section 13B (FIG. 9) generates a rhythm pattern formed by temporally arranging bercassive sounds, and stores rhythm-specific memory sections MEM11 to MEM1n corresponding to the first to nth rhythm types. have

Each rhythm-specific memory section MEMII to MEM1n includes a normal pattern memory area FI LNO10 and the first to
Fourth fill-in pattern memory area FILNOII
~FILNO14, and each memory area FILNO
IO, and FILNOII to FILNO14 are used to store the O to 31st tempo clock data CL in the same way as one of the first to fourth channel memory area sections CHNI to CHN4 of the accompaniment pattern memory section 13A in FIG.
Data representing a percussive sound to be generated is stored for each address corresponding to K.

In this way, the CPU 5 sequentially specifies the addresses 0 to 31 using the tempo clock data CLK, so that when there is an address in which vercussive sound data is written, the percussive sound can be generated at that timing. There is.

When the CPU 5 enters the tempo processing program RT2, first, in step SP51, the automatic performance flag data RU held in the automatic performance flag data register REG4 is
It is determined whether N is logical "1" or not, and when a positive result is obtained (this means that the performer has specified automatic performance mode), the CPU 5 performs step 5P52.
Move to pattern change key number data register REG
Pattern change key number data N held in 8.

is not N0=O and the tempo clock data C held in the tempo clock data register REGII
It is determined whether LK is smaller than 24.

Here, when the pattern change key number data NO is not N0 = 0, this means that the pattern change key number data NO is set to N0 = 1 in step 5P42 (Fig. 5) of the automatic performance pattern judgment processing loop described above. This means that the player has executed an automatic performance pattern designation operation during aftertouch processing.

Furthermore, when the tempo clock data CLK is smaller than 24, this means that the timing at which the tempo interrupt signal S3 is generated is the timing at which the tempo clock data CLK in the range of the 1st to 3rd beats of one measure is obtained. This means that at this time, the player is in a good condition to immediately enter automatic performance.

On the other hand, when the tempo clock data CLK is equal to or larger than 24, this means that the timing to start automatic performance has entered the 4th beat. There is an inconvenience that a rhythm sound or performance sound that is short and gives an unnatural impression is generated before the start of the performance of a measure.・Therefore, when the CPU 5 obtains a positive result in step 5P52 (this means that the timing is between the 1st and 3rd beats), there is no problem as described above, so the process moves to step 5P53 and changes the pattern change key. The pattern change key number data No held in the number data register REG8 is written to the fill number data register REGIO as fill number data FTLNO. This fill number data FILNO is stored in the accompaniment pattern memory section 13A (FIG. 8) or Rhythm pattern memory section 13
Memory area F r LNOi (i
= 1 to 4) or FILNOli (i = 1 to 4), and thus, when the fill number data FI LNO is i = 1 to 4, the memory area FIL
NOi (i=1 to 4) or FILNOI i (
By specifying i=1 to 4), accompaniment pattern data or rhythm pattern data stored in the memory area can be read out.

In the next step 5P54, the CPU 5 sets the pattern change key number data register REG8 to N.

After writing =O data and resetting, step 5P5
Move on to 5.

In this way, the CPU 5 executes the accompaniment pattern data or rhythm pattern data succession processing specified by the pattern change key number data NO.
When a negative result is obtained in step 52 (this means that the performance state is unsuitable for playing with a fill-in pattern; in other words, it means that the performance state is such that it should be played at the beginning of a measure with a normal pattern). ),C
PU5 jumps steps 5P53 and 5P54 and moves to step 5P55.

This step 5P55 is a step of generating a rhythm sound, and the CPU 5 selects and selects a rhythm type from the rhythm pattern type selection operator 3C of the panel operation section 3 by the performer.
(FIG. 9) and select the fill number data FILNO of the fill number data register REG10.
to select the memory area FILNOI (i=0 to 4) of the rhythm pattern memory section 13B, and store the rhythm pattern data in the tempo clock data register R.
The tempo clock data CLK of the EGII is read out using it as an address signal, and this is sent to the musical tone signal generator (
TG) 8 as musical tone signal control information MtJS to generate rhythm sounds.

Subsequently, the CPU 5 executes processing for generating accompaniment sounds in step 5P56. That is, the rhythm-specific memory units MEMI to ME correspond to the accompaniment pattern type specified by the performer using the accompaniment pattern type selection operator 3B.
Mm (Fig. 8) and fill number data FIL of fill number data register REGIO.
NO and chord data C of chord data register REG14
Accompaniment sound is generated by reading accompaniment data from the accompaniment pattern memory section 13A using the HD and transferring it as musical tone signal control information MUS to a musical tone signal generation section (TO).

Next, the CPU 5 adds "+1" to the tempo clock data CLK of the tempo clock data register REGII in step 5P57, and then adds "+1" to the tempo clock data CLK in step 5P5B.
is smaller than 32.

If a negative result is obtained here, this means that the tempo clock data CLK has reached the end of one measure (Fig. 7)), the CPU 5 moves to step 5P59 and inputs the tempo clock data in the tempo clock data register REGII. After specifying the start timing of the next measure by resetting CLK to 0, the normal pattern memory area of the accompaniment pattern memory section 13A and rhythm pattern memory section 13B is set by rewriting the fill number data FILNO to 0 in step 5P60. FI
Return LNOO and FILNOIO to the selected and specified state.

The cpus thus ends the tempo processing program and returns to the main routine RTO from step 5P61.

Further, if a negative result is obtained in step 5P51 described above (this means that the performer has not selected and specified the automatic performance mode), the CPU 5 returns to step SP62.
Then, the process returns to the main routine RTO.

Furthermore, if a positive result is obtained in step 5P58 described above (this means that the tempo clock data CLK has not yet reached the end of one measure (Figure 7)).
, the CPU 5 returns to the main routine RTO from step 5P63 without executing the processes of step 5P59 and step SP60.

In the main routine RTO (Fig. 4), the CPU 5
If a new key-off event occurs while the automatic performance start processing loop and key-on event processing loop are being executed, this is determined by obtaining a positive result in step 5P12 described above, and key-off event processing is executed from step 5P71. do.

That is, the CPU 5 detects the key code that matches the key code of the key in which the key-off event occurred in step 5P71 by searching the key code data KCI-KC4 of the key code data register REG2, and searches the key code data that matches. The key-off channel data KOFF representing the sound generation channel number j having the key-off channel number j is written into the key-off channel data register REG13.

Subsequently, in step SP72, the CPU 5 sets the key-on data KONj corresponding to the sound generation channel number j represented by the key-off channel data KOFF to logic "0".
After writing the data ``, it is determined in step 5P73 whether the automatic performance flag data RUN is logical ``1'' or not.

If a negative result is obtained in this step 5P73 (
(This means that the performer has not designated the automatic performance mode), the CPU 5 moves to step 5P74, and in the time slot of the j-th sound generation channel where the key-off event has occurred, the musical tone signal generator (TG) 8 A key-off process for stopping the sound is executed and the process returns to step 5P13 described above.

On the other hand, if a positive result is obtained in step 5P73 (this means that the automatic performance mode has been designated by the performer), the CPU 5 performs step 5P73.
The process moves to step 5P13 without executing the process of P74. Thus, in the automatic performance mode, even if a key is released, the sound generation of that key is not stopped, thereby maintaining the chord generation state.

In the above configuration, the performer selects the automatic performance mode by operating the automatic performance start switch 3A, and selects the accompaniment pattern type selection operator 3B and the rhythm pattern type selection operator 3C to select the specified performance mode. The CPU 5 executes sound generation processing based on the accompaniment pattern type and rhythm pattern type.

That is, the CPU 5 specifies the automatic performance mode by writing the automatic performance flag data RUN of the logic rlJ into the automatic performance flag data register REG4 in the automatic performance start processing loop (steps SP2 to 5P5) of the main routine RTO, and also performs key-on event processing. In the loop (steps SP6 to SP5PII), each time the performer performs a performance operation on a new key, the key-on data KON j and key code buffer data KCBUF j of that key are loaded into the j-th empty channel into the register section 7, and the accompaniment pattern is Chord data CH used in
D is taken into the register section 7.

Thus, in the automatic performance mode, when a key-on event occurs, the player does not immediately generate a musical tone, but waits for the aftertouch interrupt signal S2 and tempo interrupt signal S3 to be generated from the timer/tempo generator 12, and then performs the player's aftertouch. Automatic performance is performed according to the accompaniment pattern and rhythm pattern selected and specified by the operation.

That is, the CPU 5 uses the aftertouch interrupt signal S2 to execute the aftertouch amount evaluation processing loop (steps 5P21 to 5p30) of the aftertouch processing program RTI (FIG. 5).
), all pronunciation channels, i.e., the jth (
When key-on data KON j is logic "1" for j = 1 to 4), aftertouch data A is sent from the aftertouch detection circuit 11 for the key of key code data KCj.
After importing FTj into the register section 7, when the amount of aftertouch exceeds the touch threshold data MIN, the performer specifies and inputs an automatic performance pattern using the key having the j-th key code data KCj. At the same time, pattern change flag data FLG and pattern change channel data CH representing the specified contents are taken into the register section 7.

Then, the CPU 5 executes the automatic performance pattern determination processing loop (steps 5P41 to 5P41) of the aftertouch processing program RTI.
5P46), the key used by the performer to specify a pattern change is the key number from the treble side of the j (=CH)th key, based on the pitch of the keys being played at the same time. The corresponding j (=CH)
The determination is made by comparing the key code data KCj (j=cH) with the key code data KCj (j=1 to 4) stored in the key code data register REG2.

In this way, the performer presses the jth key from the treble side of the keys currently being played with a pressing force stronger than the touch threshold data MIN, thereby creating the automatic performance pattern corresponding to the jth key. This means that it can be specified.

In this state, when the tempo interrupt signal S3 is generated from the timer/tempo generator 12, the CPU 5 executes the tempo processing program RT2 (Fig. 6) to change the pattern change key number representing the key pressed strongly by the performer. A corresponding automatic performance pattern is selected based on the data number.

That is, the CPU 5 imports the pattern change key number data No into the fill number data register REGIO as the fill number data FILNO (step 5P53).
, the content of the file number data FILNO is i (
i = one of Q to 4), the i-th rhythm pattern is stored in the pattern memory area FILNO1i.
(i=one of 0 to 4) and generates a rhythm sound (step 5P55), and also reads the pattern memory area F I LNO of the accompaniment pattern memory section 13A.
Accompaniment pattern data is read out from i (i=one of 0 to 4) and generated (step 5P56).

Here, the tempo interrupt signal S3 generated from the timer/tempo generator 12 is generated at time intervals that are obtained by dividing the time of one bar of the currently playing song into 32, thereby causing the CPU 5
31 is ordered at the timing of the end of the 4th beat from the 0th tempo cross that occurs at the beginning of the 1st beat.
The tempo clock data CLK is sequentially incremented until the second tempo clock (step S
P57) For example, the accompaniment pattern memory section 1 stores sustain tones constituting a dispersed chord and percussive tones constituting a rhythm pattern at predetermined timings.
3A and the pattern data read out from the rhythm pattern memory section 13B.

In this state, if the performer wants to switch the automatic performance pattern, the performer should weaken the pressure on the previously pressed keys and increase the pressure on the other keys that are currently being pressed at the same time. Good.

At this time, the CPU 5 uses the aftertouch processing program RTI.
After the sound generation channel number j to which the switched key is assigned is taken in as pattern change channel data CH (step 5P27), the order from the highest tone side is detected as pattern change key number data NO (step 5P42). ~5P46), the i-th pattern memory area FILNOi (FIG. 8) and FILNoli (9th
Accompaniment sound after switching (step 5P5) based on the accompaniment pattern data and rhythm pattern data read from
6) and rhythm sounds (step 5P55) can be generated.

If the performer wishes to switch from the automatic performance mode to the normal performance mode, the performer must press the automatic performance start switch 3A.
All you have to do is press .

At this time, the CPU 5 can determine that the normal performance mode has been designated by switching the automatic performance flag data RUN from logic "1" to logic "0" (step 5P3), and thus if there is a new key-on event, Generates a musical tone corresponding to the pressed key, and
When the performer performs an aftertouch operation in the aftertouch processing program RTI (FIG. 5), an aftertouch effect corresponding to the amount of aftertouch is applied to the musical tone (step 5P30).

According to the above configuration, when a performer wants to play the electronic musical instrument l in automatic performance mode, the performer only needs to perform a simple operation such as increasing the pressure on one of the keys that are being pressed at the same time. This allows the player to easily switch the desired automatic performance pattern. In this way, it is possible to eliminate the need to provide a special operator for switching automatic performance patterns as in the conventional case, and to this extent, the performance operation of the electronic musical instrument can be further simplified.

[2] Other Embodiments (1) In the above embodiments, the automatic performance pattern was described as an example in which one bar had four beats, but the present invention can be similarly applied to other beats. obtain.

(2) In the above, this invention is applied to the case where multiple keys are played at the same time (usually in the case of keys in the accompaniment keyboard range), but the present invention is not limited to this. It is also possible to switch automatic performance patterns.

(3) In the above-described embodiment, the automatic performance pattern is switched by an aftertouch operation, but instead of this, the automatic performance pattern may be switched based on an initial touch operation.

In this case, the performer's input operation may be determined based on the pressing speed or the pressing depth of the key.

(4) In the above embodiment, one value is selected as the touch threshold data MIN, and the player The automatic performance pattern switching operation is determined, but the threshold value is not limited to one, but multiple threshold values are provided, and the pressing force of the performer falls within the range divided by the multiple threshold values. The player's operation input data may be determined depending on the performance.

(5) In the above-described embodiment, in the automatic performance pattern determination processing loop (steps 5P41 to 5P46) of the aftertouch processing program RTI (FIG. 5), when determining the pattern change channel data CH, the order from the highest note side is determined. However, instead of this, it may be determined based on the order starting from the lowest note. Alternatively, the same effect as described above can be obtained even if the performer is allowed to set the order from the high-pitched tone side or the low-tone side.

(6) In the above-described embodiment, an embodiment was described in which the automatic performance rhythm pattern was switched based on the data inputted by the player through touch operations on the keys, but the present invention is not limited to this. For example, in a so-called preset type electronic musical instrument in which the data of panel operators can be preset in the memory in the panel operation unit 3, it is applied when changing the preset value, or changing the designation of the tone as necessary. In short, the present invention can be widely applied when switching the "musical tone generation conditions" for specifying musical tones.

〔Effect of the invention〕

As described above, according to the present invention, by making it possible to switch the musical tone generation conditions by a touch operation on a key, it is possible to eliminate the need to provide a dedicated operator for switching the musical tone generation conditions. Accordingly, it is possible to implement an electronic musical instrument that can simplify the overall configuration and further facilitate the performance operations of the player.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the electronic musical instrument according to the present invention, FIG. 2 is a route map showing the detailed configuration of the register section 7, and FIG. 3 is a diagram showing the relationship between keys and key codes.
4, 5, and 6 are flowcharts showing the main routine, aftertouch processing program, and tempo processing program of the CPU 5, respectively; FIG. 7 is a route map for explaining automatic performance patterns; and FIGS. 8 and 9. The figure is a route map showing the detailed configuration of an accompaniment pattern memory section 13A and a rhythm pattern memory section 13B that constitute the automatic performance pattern memory 13. 1...Electronic musical instrument, 2...Keyboard section, 5.
...CPU, 7...Register section, 8...
...Music signal generator (TO), 9...Sound system, 11...Aftertouch detection circuit, 12...Timer/tempo generator, 13...・
. . . Automatic performance pattern memory, 13A . . . Accompaniment pattern memory section, 13B . . . Rhythm pattern memory section.

Claims (2)

[Claims] (1) In an electronic musical instrument in which a corresponding pitch can be specified by pressing a key as a pitch specifying means, and touch response operations can be performed for each key pressed. . An electronic musical instrument characterized in that, based on the touch response detection information obtained from the pressed key, when the touch response detection information reaches a predetermined level, a musical tone generation condition is switched. (2) The electronic musical instrument according to claim 1, wherein the musical tone generation condition is an automatic performance pattern.