JPS62187388A - Electronic musical apparatus with automatic performer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The invention will be explained in the following order.

Industrial Application Field Overview of the Invention Conventional Technology Problems to be Solved by the Invention Means for Solving the Problems Description of Embodiments Explanation of the configuration of the electronic musical instrument shown in FIG. 1 Explanation of the operation of the electronic musical instrument shown in FIG. 1 , Main processing (Fig. 8) 2. Key event processing (Fig. 9) 3. Panel event processing (Fig. 10) 4. ENT switch-on processing (Fig. 11) 5.1NC/
DEC switch-on processing (Fig. 11) 6. TGL switch-on processing (Fig. 15) 7. Note length switch-on processing (Fig. 16) 8. Code writing processing (Fig. 17)
9. Memory remaining amount display processing (Fig. 18) 10. PRE switch-on processing (Fig. 19) 11. Preset data writing processing (Fig. 20) 12. Preset exchange processing (Fig. 21) 13. 8EQ switch-on processing (Fig. 22) 14, run/stop processing (Fig. 23) 15, rhythm select processing (Fig. 24) 16, tempo interrupt processing (Fig. 25) 17, beat top processing (Fig. 26) 18. Sequencer succession processing (FIG. 27) 19. Preset succession processing (FIG. 28) 20. Note length change processing (FIG. 29) Variations of the embodiment Effects of the invention [Industrial application field] This invention Regarding an electronic musical instrument equipped with an automatic performance device that performs automatic performance based on performance data pre-stored by a performer in a storage means such as a memory, in particular, it is possible to store the performance data in real time, and the same The present invention relates to an electronic musical instrument with an automatic performance device that requires less storage capacity for performance data.

[Summary of the Invention] The present invention enables real-time recording of chord types and key operation timings by automatically detecting chord types and key operation timings in keyboard performance in an electronic musical instrument equipped with an automatic performance device. and multiple notes as 1
By storing the chord type data as one chord type data, the storage capacity for the performance data is reduced.

[Prior Art] Conventionally, when an automatic performance device for an electronic musical instrument is in a performance data storage mode, data is stored based on key name (pitch) data of keys pressed or released on a keyboard and change timing data of key operation status. There is a known device that sequentially stores performance data in a performance data memory in the order of performance, and when in automatic performance mode, sequentially reads out the performance data stored in the performance data memory and generates musical tones based on this performance data. (Japanese Unexamined Patent Publication No. 58-205192). Also known is a so-called chord sequencer that manually (step writes) chord types and note lengths (step write) using a keyboard, predetermined switches, or the like.

[Problems to be Solved by the Invention] However, the former method does not record the performance as it is, for example, sequentially stores the pitch of each key pressed or released and the timing data of the pressed or released keys. This has the disadvantage that the required storage capacity is large.

Furthermore, since the performer cannot be recorded in real time, there is an inconvenience that when the recorded performance data is played back, it may differ from the image of the performer.

In view of the above-mentioned problems with the conventional type, an object of the present invention is to provide an electronic device with an automatic performance device that can record performance data in real time based on keyboard performances, and that requires less storage capacity for the performance data. The goal is to provide musical instruments.

[Means for Solving the Problems] In order to achieve the above object, the present invention detects the key depression state in a keyboard performance as a chord type, and detects the timing of a change in the key depression state by comparing it with a tempo signal. , these chord types and key operation change timings are recorded in real time.

According to one example of this invention, the keyboard has accompaniment keys 5IlIC.

[Description of Examples J Hereinafter, the present invention will be explained in detail using the drawings.

(Explanation of the overall configuration of the electronic musical instrument shown in FIG. 1) FIG. 1 shows the hardware configuration of an electronic musical instrument according to an embodiment of the present invention. This electronic musical instrument has a central processing unit (C
PU) 11 and a bidirectional pass line 12 to this CPU 11.
Connected via ff! g (L7K) 13, Ft!
111 (LK) 14, Petal IP board (PK>Is, switch group 16, program memory 17, pattern memory 1
8, sequencer memory 19, conversion table memory 20,
Working memory 21, tempo generator 22, and for generating upper keyboard sound, lower keyboard sound generation, pedal keyboard sound generation,
Tone generators (TG) 23, 24, 25, 26, 2 for rhythmic chord sound generation and rhythmic sound generation
7 etc., and has a keyboard performance function as a normal electronic musical instrument, as well as accompaniment patterns stored in the pattern memory 18 and performance data (sequencer data; accompaniment sound data and operations stored in the sequencer memory 19). A function that automatically plays (plays) accompaniment such as rhythmic chords based on panel data representing the panel settings, an autorhythm function that automatically plays rhythms based on the rhythm pattern in the pattern memory 18, etc. We are prepared. Furthermore, the performance data is stored in the sequencer memory 1.
It also has the function of recording on 9.

In this performance data recording mode, chords (chords) are recorded using the lower keyboard 14 using the note length switch 37 shown in FIG. 2, which will be described later.
- 39 to write the note length, and the preset write switch 36 and preset switches 55 to 70 in FIG. 2 to write the preset number, which is the number of the panel memory in which the panel data is stored. , lower tj19114, the Bi position automatically detects and records the played chord type and its note length.

Note that this electronic musical instrument records accompaniment data by chord type (root note and chord type), and compared to conventional electronic musical instruments that record accompaniment data for each constituent note of a chord, it is easier to record accompaniment data for the same accompaniment data. This saves the capacity of the pattern memory 18.

Additionally, a mode is also available in which the accompaniment data and panel data are played back individually.

Furthermore, a sound source (LK-TG24) for forming musical tones by manual performance of the lower keyboard 14 and a sound source (RC-TG26) for forming automatic accompaniment sounds are provided separately.
This allows you to set the tone separately.

In FIG. 1, the CPU 11 is connected to each keyboard 13.
The key information output from the switch group 15 and switch and operator information from the switch group 16 are taken in, and predetermined sound information (start of sound,
23.24.25.2 to generate musical tone information such as sound stop, pitch, timbre, etc.
6.27, etc., and controls the entire operation of this electronic musical instrument.

The switches and operators constituting the switch group 16 are arranged on the operation panel (FIG. 2) of this electronic musical instrument.

FIG. 2 shows the appearance of the operation panel of the electronic musical instrument shown in FIG. In the figure, a multi-menu display 31 is composed of a liquid crystal (LCD) display and displays operating modes and the like. Menu changeover switches 32, 33, and 34 and toggle change switch 35 are switches for changing over the operating mode of this electronic device.

The preset write switch 36 is used in the recording mode to write a preset number in performance data to designate a panel memory (sixth factor) in which a desired panel state is stored. The note length switches 37, 38, and 39 are used to specify note lengths (1 measure, 1/2 measure, and 1/4 measure) in the step write mode. The tempo display 40 displays the bar number and beat number during performance or step writing. The sequencer switch 41 is used to select whether or not to reproduce the accompaniment based on the performance data in the pattern memory 18 and the panel status (sequencer mode). The run/stop switch 42 is used to start and stop the accompaniment and panel state playback, autorhythm performance, and real-time looping operation.

This operation panel further includes eight rhythm type selection switches 43 to 50 for automatic rhythms, switches 51 and 52 for selecting variations and fill-in patterns for each rhythm type, and switches 51 and 52 for selecting variations and fill-in patterns for each rhythm type, and switches for breaking automatic performance during performance. 16 preset switches 55 to 10 for specifying panel data, a memory switch 11 for storing and using panel data, and the like are provided.

Other operators 80 include a rhythm tone m setter, tone selection switches and tone ff1l constants for each of the above-mentioned keys 13, 14, and 15, a tempo setter for accompaniment/rhythm automatic performance,
There are also auto bass chords, albeggio chords, melody on chords, playback sound vibrato, tremolo and sustain stages, constant switches, etc.

FIG. 3 is an operational menu system diagram of the electronic musical instrument shown in FIG. 1. Since the present invention relates to automatic performance mode,
Here, the main classification is sequencer mode (MENU=1
), but it is also possible to set other modes. Menu changeover switches 32 to 34 in Fig. 2
Of these, each time the ENT switch 31 is pressed, the operation menu of the electronic musical instrument, which is the first cause, is changed to the main menu (MENL).
I-1) to the middle category menu (MENU-2 or 3)
), from medium classification to small classification (MENU-4 to 9)
), and the classification level changes from small classification to major classification (in the figure, the left side is the higher level). Also, when the INC switch 32 or the DEC switch 33 is pressed, the third
The operation menu changes within the same classification level in the diagram. The state of this switching is stored in the table shown in FIG.

In FIG. 12, the MENU column is the current operation menu, the T8LED column is the operation mode after pressing the ENT switch 34 once, and the TBRING and TBLD
EC indicates the operation menu after switching by pressing the INC switch 32 and DEC switch 33 once.

In Figure 3, MENU=2 is a play mode change for switching the playback mode one part at a time, MENU-4 turns on/off the automatic accompaniment (food sequencer), and turns on/off the preset sequencer (sets the panel status according to performance data). MENU-5, Turn on/off automatic performance (sequencer) repeat mode MEN [J-
ME to turn on/off LK enable, which is a mode that produces the sound of the 6,1 key l114 in real time.
Consists of NLJ-7. Also, MENU-3 is the recording mode, MENU-8 is the real-time writing mode, and MENU-8 is the real-time writing mode.
-9 is step write mode.

The multi-menu display section 31 in FIG.
), the remaining capacity of the sequencer memory and the types of chords input by pressing keys on the lower W1 keyboard 14 and the pedal keyboard 15 are displayed (see each frame in FIG. 3).

Referring to FIG. 1, a program memory 17 is comprised of a single-only memory (ROM), and stores a control program for CPLJll.

The pattern memory 18 is a ROM that stores accompaniment pattern data and rhythm pattern data. Rhythm patterns are prepared for each rhythm type (number), variation, and fill-in, and accompaniment patterns are prepared for each rhythm type, variation, fill-in, etc., and chord type.

The sequencer memory 19 is a random access memory (R
AM), and the user can write desired performance data using the write mode.

Alternatively, a part of the system may be constructed from a ROM to provide existing performance data such as settings.

This performance data consists of 3 words in 1 word as shown in Figure 4.
Byte-length fractional chord (Code 1) data, 2-byte-length normal chord (Code 2) data, 4-byte-length preset data, and each 1-byte-length non-code (rest) data and end mark are combined as appropriate. It is something that

In the chord (Chord 1 and Code 2) data, the first byte represents the chord type. As for the chord type data, as shown in the comparison chart in Figure 5, the upper 4 bits are the root (root note).
The lower 4 bits of data are code type data. The root is C, C#.

..., A#, B 12 note names as data 0-8 respectively
)-1 (in hexadecimal notation, hereinafter, rHJ is added to indicate that it is a number in hexadecimal notation), and the code types are major (M), six (6th>, ...). Each corresponds to data O''-FH (however, FH is a code not established).

The second byte of code 1 consists of a 4-bit identification mark CH indicating that the data type is bass note data, and 4-bit data 0''BH indicating the root note name for the bass note. The same root note name data as for chords (accompaniment) is used.FH as the root note name data for bass note indicates no bass (no bass note is produced).

The third byte of code 1 and the second byte of code 2 are the identification mark DH of note length data and note length data 1 to 3H.
It consists of The note length data is 1 beat for 1H, 2 beats for 2nd, and 3
H is 1 measure (4 beats).

The first byte of the preset data is an identification mark F1+-+ indicating the beginning of the preset data, and the lower 4 bits of the second byte are panel memories 1 to 16 (corresponding to preset switches 1 to 16) provided in the working memory 21. ) (corresponding to preset switches 1 to 16) O to FH1 The third byte is rhythm operator setting data, and the fourth byte is an identification mark F6+-+ indicating the end of the preset data. . In the third byte of rhythm controller setting data, MS8 is blank (not used)
The 2nd to 3rd bits are mode data (0: normal, 1: fill-in, 2nd break), the 4th and 5th bits are fill-in variation and variation setting flags, and the 6th to 8th 3 bits are rhythm. This is number data.

In FIG. 1, the conversion table 20 includes CPU 11
Various tables used when converting data when performing various arithmetic operations, such as the menu switching table shown in FIG. 12 described above, are stored.

The working memory 21 in FIG. 1 is for temporarily storing various data that may be difficult to generate when the CP Ll 11 executes the above-mentioned control program, and is composed of, for example, a random access memory (RAM), and includes a panel memory area,
Registers such as various registers, flags, and buffers are provided.

As shown in Figure 6, the panel memory area consists of 33 areas of the same format that store the status of each switch and operator on the operation panel (Figure 2), namely the current panel status buffer CURRENT and the normal preset. It consists of memory areas PRENi (i-1 to 16) and sequencer preset PRESi (1-1 to 16). Here, by using different areas PRENi and pREs+ in normal (sequencer off) mode (SEQ-0) and in sequencer mode (SEQ-1), the panel state when the sequencer is assembled can be recirculated. ing. This is because unless two sets are prepared, the original panel state cannot be reproduced when the preset is rewritten. On the other hand, if it is desired to change the contents of a preset in the sequencer, it is sufficient to turn on the sequencer mode using the switch 41 in FIG. 2 (setting SEQ=1) and rewrite the preset to the desired one.

The following registers are provided in the working memory 21. In the following, each register is shown by its contents (data, etc.) unless otherwise specified.

RUN: Run flag Rhythm running! II (Ilo>
TCL: Tempo clock 0~47 BAR: Number of measures 1~25'5 BEAT: Number of beats 1~4 CNT: Beat counter for sequencer 1~4 ROOT: Root note 0~11 (C, C#,..., B) PROoT: Root note for bass note O~11 TYPE: Chord type 0
~FH MODE: 0 Normal 1 Play mode change 2 Real time writing 3 Step writing MENLJ: Current position 1 of the multi menu in Figure 3~
9 FLAGi: i=1 code sequence 1=2
Preset sequence i = 3 Repeat i = 4 Flags for each mode of enabling lower & 1F board performance sounds On (=1) Off (=0) LEN: Sequencer note length data D1+~D3H LENGTH: Lower sequencer note length data LEN 4 bits 1 to 3 DT, DEC: Control variable for faith calculation (1, 2, 4) BR
ANCH: Sequencer data attribute symbol LONG:
Whether the sequencer code is a fractional code (-1) or not (-〇)
or SEQ: Sequencer on (=1)/off (-〇) CHD
CHG: Flag indicating that the code has changed (PREC) - Flag indicating that the IG nib reset has changed 5EQPNT: Sequencer address pointer REMA
IN: Remaining sequencer each city O~200 (X 10 bytes) F? RENO: Final preset number O~15 (1~16 on the switch) RHYNO: Rhythm number O~7 (1~8 on the switch) RHYBUF: Rhythm information buffer? (See Figure 7) 4th
The format of the tempo generator 22 is the same as the third byte of the preset data in the figure.The tempo generator 22 is, for example, a variable frequency oscillator, or a fixed frequency oscillator and a frequency divider with a variable division rate that creates a tempo clock by dividing the output of this oscillator. It is composed of instruments, etc., and generates a tempo clock with a period of 1/12 of one beat (quarter note). The cycle of the tempo clock is varied by a tempo setter (not shown) (volume, switch, etc.) arranged on the operation surface.

Tone generator for upper keyboard sound generation (LIK-TG) 2
3 forms a melody performance sound signal in accordance with the operation of the upper rIIM 13. Tone generator for lower keyboard sound generation (L
K-TG) 24 forms an accompaniment sound signal of sustained sounds in response to the performance of the lower keyboard 14. The tone generator (PK-TG) 25 for generating pedal III sound is connected to the pedal keyboard 15.
A bass sound signal is formed in accordance with the key depression sound, the performance data (Chord 1 and Code 2) sequentially read from the sequence memory 19 at the tempo determined by the tempo clock, and the accompaniment pattern sequentially read from the pattern memory 18. . The rhythmic chord generation tone generator (RC-TG) 2G cuts chords specified by the performance data using the accompaniment pattern and forms rhythmic chord sound signals. A tone generator for rhythm sound generation (RHY-TG) 27 forms a rhythm sound signal according to a rhythm pattern read out sequentially from the pattern memory 18 together with an accompaniment pattern.

The signals formed by each of these tone generators 23 to 27 are supplied to a sound system (not shown), where they are acoustically mixed and produced.

t [In this electronic musical instrument, the tone generator 24 for forming the performance sound signal of the lower keyboard 14 and the tone generator 26 for forming the automatic accompaniment sound signal are separately provided. This allows accompaniment tones produced by a keyboard and accompaniment tones produced by automatic performance to be produced simultaneously with independent tones, thereby enabling performances with more variety.

(Explanation of the operation of the electronic musical instrument shown in FIG. 1) Next, the operation of the electronic musical instrument shown in FIG. 1 will be explained with reference to the flowcharts shown in FIGS. 8 to 11 and 13 to 27.

1. Main Process Referring to FIG. 8, when the electronic musical instrument is powered on, the CPU 11 starts operating according to the control program stored in the program memory 17 (step 100).
. In step 101, the mode register MODE in the working memory 21 is cleared, and the menu number register ME is cleared.
After initializing the entire device by setting NLIE to 1 and displaying the initial menu (for example, MENU=1 in FIG. 3) on the menu display 31, step 1
The main routine operations consisting of steps 02 and 103 and steps 110 and 150 are executed.

That is, first, in step 102, the keyboard 13
It is determined whether the state of any of the keys has changed (key event has occurred) by inspecting the outputs of steps 1 to 15.

If there is a key event, the process proceeds to step 103 after executing the key event processing (step 110) in FIG. If there is no key event, the process branches directly to step 103. In step 103, each switch 31 on the operation panel
~71 and the controls to select one of the switches 31
~71 or it is determined whether the state of the operator has changed (a panel event has occurred).

If there is a panel event, execute the panel event processing (step 150) in FIG.
2, and repeat the above operations starting from step 102. If there is no panel event, the process returns directly to step 102.

2. Key Event Processing Referring to FIG. 9, in step 111 it is determined whether the key event is caused by the operation of the lower keyboard 14 or the pedal keyboard 15. If the result is "No", the upper keyboard 13 has been operated, and after executing key-on or key-off processing of the UK-TG 23 according to the event type in step 112, main processing (step 103 in FIG. 8) is performed.
Return to By the process of step 112, the upper keyboard 13
The melody sound is produced according to the key press operation (manual performance).

If it is determined in step 111 that the key event is caused by an operation on either the lower keyboard 14 or the pedal keyboard 15, it is determined in step 113 whether the current operation mode is recording mode or playback mode. . if,
If the mode is recording, proceed to step 114 and press the lower keyboard 1.
The chord type is detected from the key depression state of No. 4, and the root note is stored in the root note register ROOT, and the chord type is stored in the chord type register TYPE. Furthermore, the note being pressed on the pedal keyboard 15 is stored in the pedal root note register PROOT. In addition,
At this time, if there is no note being pressed on the pedal keyboard 15, the root note data in register ROOT is stored in register PROOT (steps 115, 116>.Next step 11
7, display the code type on the multi-menu display 31 (see the display example of MENU=9 in FIG. 3), step 11
8 to turn on the key of LK-TG24 and PK-TG25/
Key off processing, ie lower keyboard 14 and pedal keys! 1
Key processing for the key press sound of 115 is performed.

Furthermore, in step 119, it is determined whether the mode is real-time writing mode or step writing mode, and if it is step writing mode, it remains as is, and if it is real-time writing mode, the code change flag CI-IDcHG is set in step 120, and then the main Returning to the process (step 103 in FIG. 8).

When the determination in step 113 above is the playback mode,
The sequencer flag SEQ is checked in step 131, and if the sequencer is on (SEQ=1>), the food sequence flag FLAG+ is further checked in step 132. Then, if 5EQ=O (normal play mode) or 5EQ=1 Even if there is, if the mode is such that only the preset sequence is on and the chord sequence (automatic accompaniment) is not performed (FLAG+ = O), the process proceeds to step 134, where the chord type is detected from the key depression state of the lower I! board 14, Store the root note in the root note register ROOT, store the chord type in the chord type register TYPE, and select the pedal keyboard 1.
After storing the note being pressed in step 5 in the pedal root note register PROOT, in step 135 LK/TG24 and PK-
Performs key-on/key-off processing for TG25. That is, accompaniment tones according to the keys pressed on the lower keyboard 14 and bass tones based on the chord type of the lower keyboard 14 and the root note pressed on the pedal keyboard 15 are produced.

On the other hand, if 5EQ-1°FLAG+-1 (code sequence on) in steps 131 and 132,
Proceed to step 136 to turn on LK enable mode (
FLAG4 = 1)
If the enable mode is off (FLAG4=0), self-help performance is further run in step 137 (RUN=
1) Inspect whether or not. Then, if the LK enable is on, that is, the mode is in which the sound played by the lower keyboard is produced, or if the automatic performance is stopped even if the LK enable is off, the process proceeds to step 135 and the sound played by the lower keyboard 14 is played. pronounce it. Also, LK enable is off,
If the automatic performance is in progress, the process returns to the main process (step 103 in FIG. 8) without performing the sound generation process. That is, in this case, only the rhythmic chord is sounded as the accompaniment (lower tI! tone).

3. Panel event processing When a panel event is detected in step 103 of FIG. 8, the panel event processing of FIG. 10 is executed. That is, it is determined which switch 31 to 71 or operator 80 was operated in each of steps 151 to 160, and processing is executed according to the operated switch or operator.

4. ENT switch-on processing When the ENT switch 34 is turned on, the process moves from step 151 in FIG. 10 to step 200 in FIG. 11.

In step 201, it is checked whether automatic performance is in progress. If automatic performance is in progress, switching the performance mode during automatic performance may have an adverse effect on the performance, so the operation of the ENT switch 34 is ignored as an erroneous operation.

In other words, the main processing (8th
Return to step 102) in the figure.

On the other hand, if automatic performance is not in progress, the contents of the menu number register MENU are changed to the data TBLED of the menu switching table (FIG. 12) in step 202. This table is created so that the operation mode switching described above using FIG. 3 is performed, and the original menu MEN
If U is 1, the new menu is switched to menu 2 which is the value of TBLED by turning on the ENT switch 34, and the old menu 2 is switched to 4.3 and 8.4 to 9 to 1.

Subsequently, in steps 220 to 229 in FIG. 13, the contents of the sequencer flag SEQ and the mode number register MODE are changed according to the contents of the register MENU. That is, in steps 221 to 224, the new menu number ME
NL+ is checked, and if this new menu 1- is MENU=1 to 3, the contents of the register MODE are rewritten to 0 representing normal mode in step 225, and the flag SEQ is reset (indicating sequencer off). MENU-4~7
If so, in step 226 the register MODE is changed to 1 (play mode change) and the flag SEQ is set (sequencer on). If it is MENU-8, the register MODE is rewritten to 2 (real-time write mode) in step 227, and the flag SEQ is set. MEN
If U=9, register MODE is set to 3 in step 228.
(step write mode) and set flag SEQ (sequencer on). If MENU is other than 1 to 9, a value for another mode is set in step 229. When the rewriting of the register MODE and the setting/resetting of the flag SEQ are completed, the mode/display updating process of step 230 (FIG. 14) is executed.

Referring to FIG. 14, in step 231, a new menu is displayed on the menu display 31. In step 232, M
It is checked whether ODE=1, that is, the new menu is a play mode change (MENLI=4 to 7), and if it is one of the play mode changes, steps 233, 234
The on/off flag FLAGi (i
=MENLJ-3) (on/off) is displayed on the menu display 31.

If MODE'i1 is determined in step 232, the process proceeds to step 235 to check whether MODE-0 or not.

If MODE-0 (normal mode), the process directly returns to the main process (step 102 in FIG. 8).

If MODE is neither 0 nor 1, the new menu is in recording mode (MENLI=8 or 9), so clear the sequencer memory address pointer 5EQPNT (step 236) and set the preset change flag PR.
ECHG is set (step 237), and the contents of the panel memory for all preset numbers PRENO are block transferred from normal to preset (step 23B), and the main processing L'[! (Return to step 1o2 in FIG. 8).

5. INC/DEC switch-on processing When the INC switch 32 or DEC switch 33 is turned on, the process moves from step 152 in the M2O diagram to step 210 in FIG. 11. In this case, as in the case where the ENT switch 34 is on, switch operations during automatic performance are ignored, and when automatic performance is not in progress, the contents of the menu number register MENU are changed to the menu change table (when the INC switch 32 is on). 12), and when the DEC switch 33 is turned on, the data is changed to 78LDEC. This data M
Processing steps 221 to 238 after ENU change are ENT
Gold (same as when switch 34 is on).

6. TGL switch-on processing When the TGL switch 35 is turned on, the process moves from step 153 in FIG. 10 to step 250 in FIG. 15.

In step 251, the operation mode is determined.

Operation mode changes to play mode (MENU-4 to 7)
), the flag FLAGi is set in Stella 7252-254.
After toggle changing (inverting) the contents (on/off) of (i=MENU-3) and displaying the new on/off on the menu display 31, the main processing (step 10 in Fig. 8) is performed.
Return to 2).

On the other hand, if the operation mode is not a play mode change,
Since turning on this TGL switch 35 is meaningless or an erroneous operation, no processing is performed and the main process 3! + (8th
Return to step 102) in the figure.

7. Sign switch-on processing When any of the sign length switches 37 to 39 is turned on, the process moves from step 154 in FIG. 10 to step 260 in FIG. 16. In step 261, it is determined whether the operation mode is the step write mode (MODE-3). Since the note length switch is used only in the step write mode, if the step write mode is not present, no processing is performed and the process returns to the main process (step 102 in FIG. 8).

When it is confirmed in step 261 that the operation mode is the step write mode, it is determined in step 262 which note length switch has been turned on, and in step 263 the note length data corresponding to the note length switch turned on is stored in the code. Store in long data register LENGTI (beat count a calculation variable register D
After storing the control variables in T, the code data is written into the sequencer memory 19 by the code writing process in step 210 (FIG. 11), and the code data is written in the memory rA in step 280.
However, due to display processing (Fig. 18), the sequencer memory 19
The memory capacity information is displayed on the menu display 31 and the process proceeds to step 266. In step 266, the control variable DT is added to the contents of the beat number counter BEAT. In step 267, it is determined whether the number of beats BEAT exceeds 4 beats (1 bar). If it does not exceed one bar, leave it as is; if it does, subtract 4 from the beat number BEAT in step 268, increment the minor counter BAR, and then enter these new bar numbers and beat numbers in the menu in step 269. It is displayed on the display 31 and the main processing (step 10 in Fig. 8) is performed.
Return to 2).

8. Code writing process Referring to FIG. 11, in step 271, the code type TYP detected in step 114 of the above-mentioned key event process (FIG. 9) and stored in the code type register is read.
Inspect E. Code is established (TYPE'iF+)
If so, in step 272, the content ROOT of the root note register is stored in the upper 4 bits of the address specified by pointer 5EQPNT in the sequencer memory 19 (the first byte of code blind or code 2 in FIG. 3), and the lower 4 Write the code type TYPE to the bit. In step 273, pointer 5EQPNT is incremented. This specifies the next write position (second byte). In step 274, the root note ROOT and the base note PROOT are compared. If it is different, the data being written is a fractional chord (code 1 in Figure 3), so the upper 4 bits are the fractional chord identification mark CH and the lower 4 bits are the base tone root note PR00T as the second byte data. Write some 8-bit data (step 275), and then write pointer 5EQPN.
T is incremented (step 216), and as the third byte, the upper 4 bits are the note length identification mark DH, the lower 4 bits are the note length data, and the 8-pit data of ENGTI-1 is old (
step 277). In the following step 278, the pointer 5
EQPNT is incremented and set to the beginning of the next word, and then the process returns to the main process (step 102 in FIG. 8).

On the other hand, the comparison result in step 274 is ROOT-PROO
If it is T, the data being written is a normal chord (code 2 in Figure 3), so steps 275 and 276 are skipped, and step 277 writes the above DH in the second byte.
and LENGTH data, and then step 2
After incrementing the pointer 5EQPNT and setting it to the beginning of the next word in step 78, the main processing (step 102 in FIG.
).

The test result in step 271 is code failure (TYPE-
FH), the data being written is rest data (no code in Figure 3), so steps 272 to 276 are skipped and the note length mark DH and note length are written in the first byte in step 277. After writing the data LENGTH, the pointer 5EQPNT is incremented in step 218, and then the process returns to the main process (step 102 in FIG. 8).

9. Memory Remaining Amount Display Process Referring to FIG. 18, in step 281, the integer part of the value obtained by dividing the contents of the address pointer 5EQPNT by 10 is calculated, and the value obtained by subtracting this integer from 200 is set as the memory remaining amount register REMAIN. Store in.

This is here 2000 as sequencer memory 19.
This is because a byte of memory is used and the remaining memory is approximately displayed in units of 10 bytes. and step 282
It is determined whether the remaining memory ωREMAIN has become O or not, and if it is not 0, the remaining memory is displayed on the menu display 31 in step 283, and then the process returns to the main process (step 102 in FIG. 8).

Further, when the remaining memory capacity becomes O, the mode number register MODE is cleared in step 284, the menu number register MENU is set to 1, and the run flag RUN is reset, and then the menu display 31 is displayed in step 285. After displaying the remaining memory capacity O, the process returns to the main process.

10. PRE switch-on processing When the preset write (PRE) switch 36 is turned on, the process moves from step 155 in FIG. 10 to step 300 in FIG. 19. In step 301, it is determined whether the operation mode is the step write mode (MODE-3). Since the PRE switch 36 is used only in the step write mode, if it is not the step write mode, no processing is performed and the process returns to the main process (step 102 in FIG. 8).

When it is confirmed in step 301 that the operation mode is the step write mode, the preset data write process (Fig. 20) in step 310 is executed, and the above-mentioned remaining memory capacity display process (Fig. 18) is executed. After execution, the process returns to the main process (step 102 in FIG. 8).

11.71J Higashi E±”-Nishoku IRffi@! Referring to FIG. 20, in step 311, an 8-bit identification mark FIH indicating the start of preset data is written at the address specified by pointer 5EQPNT in sequencer memory 19 (first byte of preset in FIG. 3). . Then, at steps 312, 314, and 316, pointer 5EQ
Step through the PNT sequentially.

Meanwhile, in step 313, the preset number PRENO is written in the second byte, and in step 315, the contents of the rhythm buffer; pRHYBUF are written in the third byte.
At step 7, an 8-bit identification mark F6s indicating the end of the preset data is written in the fourth byte. Further step 3
At step 18, the pointer 5EQPNT is incremented and set to the start address of the next word, and then the process returns to the main process (step 102 in FIG. 8).

12. Preset Exchange Processing When any of the preset switches 55 to 70 is turned on, the process moves from step 156 of factor 10 to step 330 of FIG. 21. In step 331, the number (1 to 16) of the switch turned on is stored in the preset number register PRENO. Further, in step 332, the number is stored in counter 1, and in step 333, the flag SE
Inspect Q. This is because the areas PREN: and PRESi of the panel memory (FIG. 6) are used differently in the normal mode (SEQ=O) and in the sequencer mode (SEQ-1).

That is, if 5EQ=1, the process advances to step 334 and checks whether the memory switch 71 is turned on. If the memory switch 11 is turned on, it is the panel state storage mode, so in step 335, the current panel state, which is the content of the memory area CURRENT, is transferred to the memory area pREs+ by 70 steps. If the switch 71 is not turned on, it is the panel status setting mode, so in step 336 the contents of the area PRESi are transferred to the area CUR.
The block is transferred to RENT, and in step 337 each switch and operator is set according to the contents of area CURRENT.

If the test result in step 333 is 5EQ=0, in steps 344 to 347, memory area PRESi
Exactly the same processing as in steps 334 to 337 above is performed, except that PRENi is used instead of .

After completing the processing in steps 335, 337, 345, or 347, it is then determined in step 348 whether the current operation mode is real-time write mode (MODE=2>). In step 349, the preset change flag PRE is set.
After setting CHG, otherwise step 349
The process returns to the main process (eighth cause step 102) without going through.

13.8 EQ Switch On Processing When the sequencer (SEQ) switch 41 is turned on, the process moves from step 151 in FIG. 10 to step 360 in FIG. 22. In step 361, the operation mode is determined. And the operation mode is other than normal mode (MO
DE', O), no processing is performed; on the other hand, in normal mode (MODE=O), after toggling (inverting) the contents of the sequencer flag SEQ (on/off) in step 362, the main processing (8th Figure step 102
).

14. Run/Stop Processing When the run/stop switch 42 is turned on, the process proceeds from step 158 in FIG. 10 to step 370 in FIG.
Move to. In step 371, the operation mode is determined. And the operation mode is normal! J (MODE=0)
Alternatively, if the mode is other than real-time running mode such as real-time writing (MODE=2), no processing is performed and the process returns to the main processing (step 102 in FIG. 8).

On the other hand, if the operation mode is real-time driving mode,
In step 372, the content (on/off) of the run flag RUN is toggled (inverted), and the flag R after this inversion is
Inspect LJN. Rhythm, etc. stops running (RLIN-
0), the process returns to the main process (step 102 in FIG. 8), and if running has started (RUN-1>), the process proceeds to step 374, where the tempo clock counter TCL is reset and the small section counter BAR1 is After setting the beat number counter BEAT and the sequencer beat counter CNT to 1, the process returns to the main process (step 102 in FIG. 8).

15. Rhythm Select Processing When any of the rhythm select switches 43 to 54 is turned on, the process moves from step 159 in FIG. 10 to step 380 in FIG. 24. In step 381, it is determined whether the current operation mode is real-time writing mode (MODE-2). If it is real-time writing mode, the preset change flag PRECHG is set in step 382, and if not, the process returns to step 381. directly,
Proceed to step 383.

In step 383 and subsequent steps, the type of switch that is turned on is checked, and the rhythm information buffer RHYB is set according to the check result.
Rewrite data in UF (7th cause).

That is, when the rhythm select switches 43 to 50 are turned on, the process proceeds from step 383 to step 384, where the selected rhythm number is stored in the register RHYNo, and in the subsequent step 385, the lower 3 of the buffer RHYBUF is stored.
After rewriting only the bits to the new rhythm number RHYNO, the process returns to the main process (step 102 in FIG. 8).

When the variation setting switch 51 is turned on, the process proceeds from step 387 to step 388, inverts the fifth bit 110 from the top of the rhythm information buffer RHYBLIF, and then returns to the main process (step 102 in FIG. 8).

When the fill-in variation setting switch 52 is turned on, the process advances from step 390 to step 391, inverts the fourth bit 110 from the top of the rhythm information buffer RHYBUF, and then starts the main process (step 10 in FIG. 8).
Return to 2).

When the fill-in switch 54 is turned on, step 39
3, proceed to step 394 and save the rhythm information buffer R1.
- After rewriting only the data of the upper three bits of IYBUF to 001a (binary representation) indicating fill-in, the process returns to the main process (step 102 in FIG. 8).

Shouting step 393 when the break switch 53 is turned on
Proceed to step 395 and save the rhythm information buffer RH.
After rewriting only the data in the top three pits of YBUF to 010B indicating a break, the process returns to the main process (step 102 in FIG. 8).

16. Tempo interrupt processing In the electronic musical instrument shown in FIG. 1, the following interrupt processing (
Step 500) is executed. In FIG. 25, in step 501, the run flag RUN is checked. if,
If RUN-0, the rhythm is currently stopped (therefore, automatic accompaniment and all-time writing of accompaniment data are also stopped), so the interrupt is canceled and the original routine is returned to.

On the other hand, if the result of the check in step 501 is RLJN-1, that is, the rhythm is currently running, the process proceeds to step 502, where the rhythm sound generation tone generator (RHY. TG) 27 is driven. In other words, rhythm sound generation processing is performed.

In the following step 503, the tempo clock count value TCL
It is checked whether the "remainder" obtained by dividing the value by 12 is 0. ``Remainder'' is 0 (if ``pull'', the process advances to step 504).

Since the period of the tempo clock is 1/12 of one beat, if the "remainder" is 0, the current timing is the beginning of one beat (beat top). In this case, step 600 (second
After executing the beat top processing shown in FIG. 6), the process advances to the next step 504.

In step 504, the operation mode is checked, and if it is normal mode (MODE-0), the flag SEQ is checked in step 505. Then, sequencer on (SEQ=
1), the code type TYPE is checked in step 506, and if the code is established (TYPE'qF+), the 7-lag FLAG+ is checked in step 501, and if the food sequence is on (FLAG+=1), the code type is checked in step 508. Check flag FLAG4.

If the LK enable is on (FLAG4 = 1), that is, in normal mode, sequencer on, code established, code sequencer on, and LK enable is on, the code type TY is set in step 509.
Based on PE and root note ROOT, LK-TG24 is generated tII1111, and in step 510, the tempo clock counter TCL, root note ROOT, PROOT, t
5 and rhythm information buff.

It controls the sound generation of the PK-TG 25 and RC-TG 26 based on the data RHYBUF of the controller. In other words, in this case, the LK-TG24 produces the accompaniment (chord) tones according to the keys pressed by the LK14, and the PK-TG25 and RC-TG26 produce the auto-bass tones and rhythmic sounds according to the performance data stored in the sequencer memory 19. pronounce chord sounds.

In the following step 511, the tempo clock counter TCL
is incremented, and in step 512 it is determined whether the count value of the counter TCL is an integral multiple of 12 or not.

If it is an integer multiple, it means that the next beat has come to the beginning, so the beat number counter BEAT is incremented in step 513. If it is not an integral multiple, the process of step 513 is skipped and the process proceeds to step 514. In step 514, it is determined whether the count value of counter TCL is smaller than 48 or not. 4
If it is less than 8, the interrupt is canceled and the original routine returns. On the other hand, if the count value of the counter TCL is 48 or more, the current measure has ended, so step 515
The counter TCL is cleared, the beat counter BEAT is set to 1, and the bar counter BAR is incremented. Furthermore, in step 516, the second and third bits from the top of the rhythm information buffer RHYBUF (FIG. 7) are cleared to set the rhythm mode to normal, and then the interrupt is canceled and the routine returns to the original routine.

In addition, in steps 504 to 508 described above, if the operation mode is not the normal mode (MODE?O), the sequencer is turned off (SEQ-0) even in the normal mode.
and LK enable off (FLAG4 = O
), the process of step 509 is not performed. That is, in this case, the manual performance sound of the basting board is not produced, but the auto bass sound and the rhythmic chord sound are produced. Further, if the code is not established (TYPE=FH) or if the code sequencer is off (FLAG+ -0), both steps 509 and 510 are skipped.

In other words, none of the manual performance sound, auto bass sound, and rhythmic chord sound of the bottom sewing board is produced.

11. Beat top processing In step 503 of FIG. 25, when the count value of the tempo clock counter TCL is an integral multiple of 12, that is, at the first tempo interruption of one beat, the following beat top processing is executed.

Referring to FIG. 26, in step 601, the bar number BAR
and the number of beats BEAT are displayed on the tempo display 40. The next step 602 is to check the operating mode. here,
If the current operation mode is normal mode (MODE-0), the flag SEQ is checked in the following step 603. Since this beat top processing is performed by the sequencer, if the sequencer is off (SEQ-0), nothing is done, the tempo interruption is canceled, and the process returns to the original routine.

If 5EQ=1 in step 603, the sequencer counter CNT is decremented in step 604, and then it is determined in step 605 whether the count value CNT has become 0. If not 0, cancel the tempo interrupt and return to the original routine; if 0, step 62
0 sequencer read processing (FIG. 21) is executed. This sequencer reading process will be described later.

If the test result in step 602 is in a mode other than normal mode (MO
DE? O), step 602 to step 61
Go to 1. This beet top treatment beam Zuran-like II (
(see step 501 in FIG. 25), that is, it is performed only in case of MODE-0 or MODE-2.
If it is not E-0, it is MODE-2 (real-time writing). At step 611°, the sequencer counter CN
T is incremented, and in step 612, the flag PRECHG is checked. The flag PRECHG is set when the operation mode is changed to real-time writing (MODE-2) (step 237 in Figure 14), when the preset switches 55 to 10 are operated (step 349 in Figure 21), and when the # and rhythm are set during real-time writing. It is set when the select switch is operated (step 382 in FIG. 24). PRECH
If G-1, proceed to step 613 and PRECHG-
If it is 0, the process advances to step 614.

Step 613 is the sequencer pointer 5EQPN T
Determine whether or not is cleared. SEQ P N
If it is TζO, the note length changing process in step 700 (second
9) and further executes the preset writing process described above (step 310 in FIG. 20), step 617
Proceed to. On the other hand, if 5EQPNT-0, step 70
The process of 0 is skipped and the preset write process is executed immediately, and then the process proceeds to step 611.

In step 614, the chord change flag CHDCHG is set.
Inspect. This flag is lower keyboard 14 or pedal W1
It is set when the chord type is changed depending on the state of the keys pressed on the keyboard 15 (step 120 in FIG. 9).

If it is CHDCHG-0, the tempo interruption is canceled and the routine returns to the original routine; if it is CHDCHG-1, the note length changing process of step 700 (FIG. 29) is executed, and then the process proceeds to step 617.

After storing 1 in the note length register LENGTH in step 617, the above-mentioned code writing process (Fig. 17) a3 and memory remaining ff1 display process (Fig. 18) are executed, and then in step 619, the sequencer counter CN After clearing the preset change flag PRECHG and the chord change flag CHDCHG, the tempo interruption is canceled and the original routine returns.

18. Sequencer readout process In normal mode, when the beat top is reached during rhythm running in the sequencer on state, the beat top process is performed, and when the sequencer counter CNT becomes O during this beat top process, this sequencer readout process is executed. do.

Referring to FIG. 27, in step 621, the upper 4 bits of the data [5EQPNT] in the sequencer memory 19 indicated by the sequencer pointer 5EQPNT are transferred to the register B.
Store in RANCH. Next, in step 622, it is determined whether this 4-bit data BRANCH is root note (0 to BH) data.

If the data BRANCH is the root note (0=BH), the data [5EQPNT] is chord type data, so in step 623, the upper 4 bits are stored in the root note register ROOT.
At step 624, the lower four hits are stored in the code type register TYPE. Further, in step 625, the pointer 5EQPNT is incremented, and in step 626, the next data [
5EQPNT] is a CH. If it is not CH, this data is the second byte of the normal chord data (code 2 in Figure 3), so the root note ROOT is stored in the bass note root note register PROOT (step 627).
), the process proceeds to step 650. On the other hand, if it is CH, this data is the second byte of the fractional chord data (code 1 in Figure 3), so the lower 4 bits of this data are stored in the register PROOT (step 628), followed by step 629. After further incrementing the pointer 5EQPNT, the process proceeds to step 650.

In step 622, the data BRANCH is set to the root note (0 to B+
-1), the process advances to step 640, where the data BRANCH is marked with a note length identification mark (D).
4) Check whether or not. If it is D I4, data F is stored in the code type register TYPE in step 641.
After storing s (chord not established, no sound produced), the process proceeds to step 650.

In step 650, the note length data stored in the second byte of normal chords, the third byte of fractional chords, and the lower 4 bits of rest data (1-byte data) is inspected, and in step 651, the note length data is The beat number data corresponding to the number of beats is stored in the sequencer beat number counter CN. Subsequently, in step 652, the pointer 5EQPNT is further incremented and set to the start address of the next word, and then the tempo interrupt is canceled and the process returns to the original routine.

As a result of the determination in step 622 and step 640,
If the data 8RANCH is neither a root note (0 to BH) nor a note length identification mark (DH), the process advances to step 660 and the 8-bit data [5EQ
PNT] is FFH (end mark), and if it is not FFH, in step 661 further FlH (
preset start mark).

If the data [5EQPNT] is FFH (end mark), the process advances from step 660 to step 662 and the FLA
Inspect G3. FLAG3 = 1 (repeat on)
If so, the pointer 5EQPNT is cleared in step 663, and then the process returns to step 621 to repeat the successive acquisition from the data at the first address of the memory 19. Further, when it is determined in step 662 that FLAG3-0 (repeat off), the run flag RUN is reset in step 664, the tempo interruption is canceled, and the routine returns to the original routine.

If the data [5EQPNT] is FlH (preset data start mark), steps 661 to 662
Proceed to and inspect FLAG2. If FLAG2-1 (preset sequence on), after executing the preset readout process in step 610 (FIG. 28), FLAG2
-0 (preset sequence off), there is no need to read out this 4-byte preset data, so in step 667 the pointer 5EQPNT is advanced by 4 (empty feed), and then the process returns to step 621 to read the next data from memory 19. Read word data.

Note that the data BRANCH is neither a root note (0-BH) nor a note length identification mark (D+-+), and the data [5E
QPNT] is neither FFH nor FiH, after performing predetermined processing such as error display or data interpolation in step 668, the process returns to step 621 and the next data is read from the memory 19.

19. Preset and output processing When it is determined in step 665 that the preset sequence is on (FLAG2-1), this preset successive output processing is executed.

Referring to FIG. 28, in step 611, the pointer 5EQ is
After storing the next data of the address in the sequencer memory 19 where PNT is designated, that is, the second byte data of the preset data [5EQPNT+11] in the preset number register PRENO, execute the aforementioned preset exchange process (Fig. 21). . Next, in step 614, the third byte data [5EQPNT+2] of the preset data is stored in the rhythm information buffer RHYBU.
F (FIG. 7), and in step 677 pointer 5E is stored.
After advancing QPNT by four and setting it to the start address of the next word, the tempo interrupt is canceled and the original routine returns.

In the beat top processing (Fig. 26) during real-time writing (MODE=2), the sequencer? When the reset switches 55 to 70 are operated (step 613
) and when the chord being input changes due to rJ1 board 14.15 (step 614), this note length changing process is executed. During real-time writing, the note length of the previous chord can be determined only after a chord change is detected, so for example, if one chord is pressed and then released, the chord type will be determined at the time of key press, and the note length will be determined at the time of key press. It will be written when the key is released.

Referring to FIG. 29, in steps 701 to 703, the count value of the sequencer counter CNT is checked.

Then, if the count value CNT is 4 or more, step 705
Then, the note length data D3H and register DEC are stored in register LEN.
After storing the control variable 4 in , the process proceeds to step 708. Further, if 2≦CNT<4, the note length data D2H is stored in the register LEN in step 107.

After storing control variable 2 in register DEC, step 7
Proceed to 08.

In step 708, the note length data part [
5EQPNT-1] is the note length data (
D3H or 02H).

In step 709, it is determined whether the previous chord was a fractional chord. Since the chord data is 2 (normal chord) or 3 (fractional chord) bytes, the code type of the previous chord data is the 3 previous data if it is a fractional chord [5EQPNT-3
], and if it is not a fractional chord, the two previous data C3EQ
It is PNT-21.

In steps 710, 711 and 720, the chord type data of the immediately preceding chord [5EQPNT-3 (or 2)]
(And if it is a fractional chord, the base note root note data [5E
QPNT-2]) is stored (copied) as the data of the chord currently being pressed as [5EQPNT] (and if it is a fractional chord, the base tone root tone data [5EQPNT+1]). In steps 712 and 122, DlH is stored as note length data [5EQPNT+1] of the chord currently being pressed ([5EQPNT+2] if it is a fractional chord) (temporary entry is rewritten when step 706 is executed). Then, in steps 713 and 723, the pointer 5EQPNT is advanced by 2 (normal chord) or 3 (fractional chord) and set to the start address of the next chord data, in step 714, the fractional chord flag LONG is set, and in step 724, LONG is reset. After that, in step 726, the counter CNT is counted down by the control variable DEC, and the process returns to step 701.

If the count value CNT of the sequencer counter is smaller than 1 in steps 701 to 703, step 7
Proceed from step 03 to step 730 and set pointer 5EQPNT.
Steps 730 to 732) return the cursor to the first address of the previous chord data, and write an end mark FFH there (step 733), then cancel this tempo interruption and return to the original routine.

In addition, in steps 701 to 703 above, 1≦CNT
If <2, the end mark FFH is written to the current address 5EQPNT (step 133), and then this tempo interruption is canceled and the process returns to the original routine.

In this electronic musical instrument, the automatic accompaniment is played with a first tone based on a chord such as a rhythmic chord and controlled by timing 11J, while a second tone is played based on the key operation of the pressed key. It is possible to play with different tones, allowing for a variety of performances. Furthermore, by switching modes, it is possible to perform automatic performance in addition to real-time performance as in the past.

FIG. 30 shows a pattern (a) and an operating procedure (b) for step writing in the electronic musical instrument of FIG. The preset number can be set by specifying the preset number using the preset switches 55 to 10 and then turning on the PRE switch '6. A chord can be set by specifying the chord type by pressing keys on the lower keyboard 14 and the pedal keyboard 15, and then specifying the note length using the note length switches 31-39. Also, for rests without chords, it is only necessary to input the note length data without inputting the type of 9d. The type of chord input from the lower RAM can be specified by pressing all of the notes that make up the chord (so-called fingered mode), but only the root note (major) can be specified.
Alternatively, it is also possible to specify a combination of the root note and another white key or black key (so-called single finger mode).

[Modifications of Embodiments] The above are embodiments of the present invention, but the present invention is not limited to the above-described embodiments and can be implemented with appropriate modifications. For example, (2) in the above description, the normal 4th rhythmic chord is used, but other types of accompaniment may be performed, and it may be possible to switch to a mode in which the accompaniment tone and the pressed key tone are the same. Also, various other combinations are possible.

■Iterate on the sequencer (D, S, , &, *, its (1!
! ) etc. may be stored to control the progress.

■The time signature is not limited to 4 time signatures, but may be other time signatures. In that case, the note length (1, 1/2, 1/4 measure) may not be an integer number of beats, but it is sufficient to round it up to an integer number of beats.

■Although we have given an example of rhythmic chords as automatic accompaniment, it is also possible to use dispersed chords such as arpeggios, including double notes.

■If the resolution of the sequencer is less than a beat, it can be done in finer units.

■Although only one sequencer is shown here, it is easy to provide multiple sequencers.

■Although only the sequencer has been mentioned as the content of the multi-menu, it is easy to add other modes such as creating rhythm patterns and changing timbres.

■It is also easy to make the sequencer editable.

(2) In the above embodiment, two blocks are provided as the panel memory, one for normal and one for preset, but it is also possible to reduce the memory capacity by making these into one block.

[Effects of the Invention] As described above, according to the present invention, while recording is performed in real time based on the Ill performance, key press states are recorded not as individual key names but as chord types, so it is easy to store. The capacity of the device is small. In particular, since most of the performances on the accompaniment keyboard involve chord performances, the reduction in storage capacity is significant.

[Brief explanation of drawings]

Fig. 1 is a hardware configuration diagram of an electronic musical instrument according to an embodiment of the present invention, Fig. 2 is an external view of the operation panel, Fig. 3 is an operation menu system diagram, and Fig. 4 is a sequencer data format diagram. , Figure 5 is a comparison chart of chord type versus note name data/chord type data, Figure 6 is a diagram of panel memory format, Figure 7 is a diagram of rhythm information buffer format 8, Figure 8 is a flowchart of main processing. , FIG. 9 is a flowchart of key event processing, FIG. 10 is a flowchart of panel event processing, and FIG. 11 is a flowchart of menu switching processing.
13 is a flowchart of mode change processing, FIG. 14 is a flowchart of mode/display update processing, FIG. 15 is a flowchart of toggle switch on processing, and FIG. 16 is a flowchart of toggle switch on processing. The 11th factor is the flowchart of the note length switch-on process, and the 18th factor is the flowchart of the code writing process.
The figure shows a flowchart of the remaining memory capacity display process. The 19th cause is a flowchart of the preset loop switch-on process.
Figure 21 is a flowchart of 7. briset exchange processing, Figure M22 is a flowchart of sequencer switch-on processing, Figure 23 is a flowchart of run/stop processing, and Figure 24 is a flowchart of rhythm select processing. Flowchart, Fig. 25 is a flowchart of tempo interrupt processing, Fig. 26
The figure is a flowchart of beat top processing, Fig. 2γ is a flowchart of sequencer continuous processing, Fig. 28 is a flowchart of preset continuous processing, Fig. 29 is a flowchart of note length change processing, and Fig. 30 is a performance data FIG. 11A is a diagram showing an example of the above, and FIG. 11...CPtJ, 13.14.15...tIl board, 16...Switch group 17...Program memory,
18... Pattern memory, 20... Conversion table memory, 21... Working memory, 23, 24.25
．． 26.27...Tone generator. Patent applicant Nippon Gakki Mfg. Co., Ltd. Representative Patent attorney Tatsuo Ito Attorney Patent attorney Tetsuya Ito Figure 6 Rhythm +1 Netomo〈Sofa Figure 7 Engraving of the drawing (no changes to the white paper) No71 Riyu Figure 11 Figure 11 Figure 11 RET To the bookmark Figure 17 Figure 19 Sequence Q Sui, +, Onme and multiple tubes 22 Figure Er Figure 23 Figure 24 Figure 1 City Hall Secretary Ugadoribu-dono 1 ．． Indication of the case 1986 Patent Application No. 289222, Name of the invention Electronic musical instrument with automatic performance device 3, Person making the amendment Relationship to the case Patent applicant Location 10-1 Nakazawa-cho, Hamamatsu City, Shizuoka Prefecture Name (40
7) Hiki Musical Instruments Manufacturing Co., Ltd. Representative: Hiroshi Kawakami 4, Agent: 105 Address: Toranomon Electric Building, 2-8-1 Toranomon, Minato-ku, Tokyo Telephone: (501) 93706 Subject of amendment: 7. Details of the correction No. 8.10.11.16.19.Insert the seedlings according to the attached figures 26-28.

Claims (1)

[Scope of Claims] 1. A keyboard, chord detection means for detecting the type of chord based on the pressed state of the keys on the keyboard, tempo signal generation means for generating a tempo signal that is the basis of the performance tempo, and the pressed keys. A key operation timing detection means for detecting the timing at which the state or chord type changes based on the tempo signal, and a rewritable performance data storage means for storing performance data including the chord type data and key operation timing data. An electronic musical instrument with an automatic performance device, characterized in that the key depression state is stored as a chord. 2. The electronic musical instrument with an automatic performance device according to claim 1, wherein the keyboard is an accompaniment keyboard. 3. The key operation timing detecting means measures the period from when the key press state changes to one key press state until it changes to another key press state by the number of the tempo signals; An electronic musical instrument with an automatic performance device according to claim 1 or 2, which detects the note length of a chord.