JP3407489B2 - Automatic performance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION The present invention relates to a pre-stored
Adjusted to the operator's operation based on the performance pattern data
The present invention relates to an automatic performance device for performing a performance. [0002] 2. Description of the Related Art Some conventional automatic performance devices include a code path.
And base parts (hereinafter referred to as “code base parts”).
) Etc. in the order of the song
Chord progression data stored in the
Based on the specified chord data
The sequential accompaniment pattern data is
To the sound suitable for chords of chords and chord data (note conversion)
Some perform automatic accompaniment. [0003] SUMMARY OF THE INVENTION Conventional automatic performance devices
Tie to supplement some accompaniment parts with automatic accompaniment
Is the pattern number that specifies the accompaniment pattern data.
You can easily change the arrangement of songs just by changing the number,
Also, changing the chord progression data or chord data is not enough.
Various code work can be realized, and even beginners can handle easily
There is an advantage that can be. However, like this
Automatic accompaniment devices perform in accordance with predetermined accompaniment pattern data.
Because you can only play, the accompaniment pattern is delicate in the middle of the song
I couldn't change it. So, in the middle of the song
To change the accompaniment pattern in
Accompaniment data created by the dynamic accompaniment device,
The accompaniment data is stored once, and the sequence
Part of the original accompaniment data, that is, note data
Editing can give subtle changes to the accompaniment
I was trying. However, once in this way
Chords for the created sequential accompaniment data
Change the progress of the music or change the accompaniment pattern
The notes that make up the sequential accompaniment data
You have to do the work of editing the data itself
Requires a high degree of musical knowledge and great effort
It was a very difficult task for beginners. [0004] The present invention provides sequential performance data.
Can be changed according to the chord specified by the user.
It is an object of the present invention to provide an automatic performance device capable of performing the following. [0005] [0006][Means for Solving the Problems] thisAutomatic performance according to the invention
The playing device has a pattern for storing pattern data related to accompaniment.
Chords for specifying chords for playback performance
Designating means and before being stored in the pattern storage means
The chord designating meansSpecified by
FirstBased on chords, read a series of performance data
Means for creating performance data to be created;
Performance data for storing the performance data created by the step
Data storage means and the performance data storage means.
The chord progression based on the series of performance data
Chord detection means, and the chord detection means
Chord progression specified by the chord designation meansSecond
ofConversion means for converting the performance data based on chords
WithThe performance data storage means is provided to the conversion means.
Therefore, the converted performance data is stored.
ToThings. In the present invention, the performance data supply means,
The performance data storage means stores sequential performance data in order.
The chord detection means supplies the performance data sequentially
Chords are extracted based on the performance data
The chord progression is detected. On the other hand, the chord designating means
Provides chords corresponding to user operations. Conversion means
The chord progression detected by the chord detection means and the chord
The performance based on the specified chord specified by the specifying means.
Convert performance data, that is, convert the pitch of performance data
You. As a result, part of the sequential performance data
If you want to change the minutes,
You do not need to edit the note data itself
And the user simply specifies the chord,
Data can be easily changed. [0008] BRIEF DESCRIPTION OF THE DRAWINGS FIG.
The embodiments described above will be described in detail. FIG. 1 relates to the present invention.
1 shows an embodiment of an electronic musical instrument to which an automatic performance device is applied.
It is a hardware block diagram. In this embodiment
Is a microprocessor unit (CPU) 1, a program
RAM memory (ROM) 2, working memory (RAM)
Various processes under the control of the microcomputer including
Is to be executed. In this embodiment, 1
Electronic musical instrument that performs automatic accompaniment processing etc.
An example is described. The CPU 1 controls the operation of the entire electronic musical instrument.
Control. For this CPU 1, data and
Program memory 2 and work memory via address bus 16
Memory 3, performance memory (RAM) 4, accompaniment pattern
Memory (ROM) 5, key press detection circuit 6, switch detection time
The path 7, the display circuit 8, and the sound source circuit 9 are connected. The program memory 2 is a system of the CPU 1
Related programs, note conversion tables, various parameters
Data and data.
It is composed of a temporary memory (ROM). Working method
Memory 3 occurs when CPU 1 executes a program
Various types of data are temporarily stored, and random
The specified address area of the access memory (RAM) is
Respectively, and used as registers, flags, etc.
You. The performance memory 4 can be used freely by the user.
User memory area for random access
A predetermined address area of a memory (RAM) is allocated.
ing. Therefore, the user can create a newly created performance
Data can be stored. The performance memory 4
Is a hard disk device other than RAM or a floppy disk
Another storage device using a hard disk drive or the like may be used.
The accompaniment pattern memory 5 stores performance styles (for example, pop
Music, rock, jazz, waltz, etc.)
Accompaniment patterns for bass and drum parts
It stores data and is read-only memory
(ROM). [0011] The accompaniment pattern data includes a header and a sequence.
It consists of a sense data section. The style of the header is
The name and the like are stored. Sequence data part is initial
Setting data and each section (main, fill-in, in
Toro and ending) pattern data
ing. Initial setting data includes the tone and performance parameters of each channel.
It is composed of data such as the port name and initial tempo. Maine
The pattern data is the main accompaniment pattern that is played repeatedly.
It is. Fill-in pattern data is filled-in performance
This is an accompaniment pattern when playing. Intro pattern data
This is the accompaniment pattern for the intro performance. Ending par
Turn data is the accompaniment pattern for the ending performance.
You. The pattern data of each section includes a marker.
-, Delta time data and event data
It is. Markers indicate sections and section breaks
The main, fill-in, intro and en
This is data indicating the type of section such as reading.
Delta time data is the time between events
Is the data indicating Event data is stored in Note On /
Events such as off, pitch bend, volume control, etc.
Data indicating the type of event, and data
(For example, note number and velocity)
Have been. This delta time data and event data
If they are stored in pairs and indicate events of the same timing
Means that the delta time data is "0". The keyboard 10 selects the pitch of a musical tone to be pronounced.
Key for each key.
Switch and, if necessary, a pressure detector
And the like. Keyboard 10 plays music
The basic controls for playing, and other performance controls
Needless to say, this is fine. Key press detection circuit 6 is generated
To each key of the keyboard 10 which specifies the pitch of the musical tone to be played
It includes a key switch circuit provided correspondingly.
You. The key press detection circuit 6 detects a key press from the key release state of the keyboard 10.
Detects a change to the state, outputs a key-on event, and
A key-off event is detected by detecting a change from the key state to the key release state.
Output, and each key-on event and key
-A note number indicating the pitch of the key for the off event
Output. The key press detection circuit 6 also has a
Velocity data and key pressure
Output after touch data. The switch detection circuit 7 is a panel (not shown).
Provided corresponding to the switch group 11 provided on the
Switch on according to the operation status of switch group 11
Output an event. As the switch group 11, for example,
Style select switch, song select switch, operation mode
Mode selection switch, recording switch, clear switch,
A start / stop switch is provided. Other
Also, a part selection switch for selecting the accompaniment part
And accompaniment sections (intro, fill-in, main, d
Section selection switch for selecting
Select the tone, volume, pitch, effect, etc.
It has various controls for selecting, setting, and controlling.
Here, only what is necessary for the description of the embodiment will be described.
I do. Style selection switch and song selection switch
Switches are, for example, numbers from "0" to "9", "+", "-"
Symbol is attached, and these switches are operated to
Enter the desired style number or song number.
To select one style or song
is there. This style select switch or song select switch
The style name and song number selected by
2 is displayed above. The operation mode selection switch is, for example, “MO
DE ”is attached, and the operation mode is
The numbers are circulated in the order of "0", "1", "2".
A desired operation mode is selected. Here, the operation mode
The code number “0” is stored in the accompaniment pattern memory 5.
The accompaniment pattern data for each part
Convert to a sound suitable for sequentially specified chord data and play
Indicates a normal automatic accompaniment mode. Operation mode number
"1" is the sequence number stored in the performance memory 4.
Detect chord progression data from special accompaniment data
Chord progression data and the
Note conversion of the accompaniment data based on the chord data
This indicates the chord progress change mode in which the performance is changed. motion
The mode number "2" is stored in the performance memory 4.
Normally performing accompaniment based on sequential accompaniment data
Indicates the sequence accompaniment mode. The recording switch is, for example, a character "REC"
Are selected by the song selection switch.
Sequential recording as accompaniment data for the current song number
This switches the recording mode between sound and non-sound.
You. The clear switch has, for example, the letters "clear"
The song number corresponding to the selected song number is
The accompaniment data is deleted from the performance memory 4.
The start / stop switch is, for example, “start / stop
The word `` Top '' is attached and automatically
It controls the start or stop of playing. The display circuit 8 is provided on a panel (not shown).
This is for controlling the display contents of the LCD 12 which is turned off.
The tone generator circuit 9 generates a tone signal using a plurality of
Simultaneous occurrence is possible, and the data and address bus 16
Performance data (via MIDI standards)
Data), and a tone signal based on the performance data
Occurs. Tone signal generation method in the tone generator 9
Any suitable one may be used. For example, the music
The waveform data is changed according to the address data that changes according to the pitch.
Read the tone waveform sample value data stored in the memory sequentially
Memory read method or the above address data
Performs predetermined frequency modulation operation as angular parameter data
FM method for finding musical tone waveform sample value data
Or the above address data is used as phase angle parameter data.
To perform a predetermined amplitude modulation operation
Even if a well-known method such as the AM method for
Good. The tone signal generated from the tone generator 9 is
Sound system 13 composed of a
Pronounced through. Timer 14 counts time interval
To set the tempo for automatic accompaniment.
A lock pulse is generated and this tempo clock
The frequency of the pulse is the tempo switch in switch group 11.
(Not shown). Timer 14
Tempo clock pulse from the
Provided as an interrupt instruction.
Various processes of automatic accompaniment are executed according to the reason. The form of this implementation
Clock pulse is 9 per quarter note
It shall be generated six times. Next, an electronic music program executed by the CPU 1 will be described.
One example of the processing of the container is based on the flowcharts of FIGS.
Will be described. 2 and 3 show microcomputers
FIG. 4 is a diagram showing an example of a main routine that is processed. this
The main routine is executed sequentially in the following steps.
It is. Step 20: First, when the power is turned on, the CPU 1
A predetermined control program stored in the program memory 2
Perform the initial setting process according to the ram. In this initialization process
Is, for example, various registers and flags in the working memory 3.
To the initial values. Step 21: Scan the switch detection circuit 7
The style selection switch in the switch group 11
Determines whether there is an ON event due to operation (ON)
If there is an on-event (YES), step 22
Proceed to step 23 if no event (NO)
Jump. Step 22: YES is determined in the step 21
This means that the operator can change the style displayed on the LCD 12.
Operate the style selection switch while watching the
It means that you have selected a style number, so select it
Style number register STYL
To be stored. Step 23: Scan the switch detection circuit 7
Operation of the song selection switch in the switch group 11.
Judge whether there is an ON event by the work (ON),
If there is an ON event (YES), proceed to step 24
If no event (NO), go to step 25
Pump. Step 24: YES is determined in the above step 23
This means that the operator can display the song displayed on the LCD 12
While watching the number, operate the song select switch to
Means that you have selected a
Stored song number in the song number register SNG
You. Step 25: Scan the switch detection circuit 7
Operation mode selection switch in switch group 11
Determines if there is an ON event due to the operation (ON)
If there is an ON event (YES), step 26
Proceed to step 27 if there is no event (NO)
Jump. Step 26: YES is determined in the step 25
That means the operator operates the operation mode selection switch
Means that the desired operation mode number has been selected.
The selected operation mode number.
It is stored in the register MOD. Step 27: Scan the switch detection circuit 7
Operation of the recording switch in the switch group 11 (e.g.
) To determine if there is an on event.
If there is a vent (YES), proceed to step 28,
If no vent (NO), jump to step 29
You. Step 28: YES is determined in the step 27
This means that the operator operates the recording switch and
Since it means that the sound mode has been switched, the recording mode
Invert the contents of the flag REC. Step 29: Scan the switch detection circuit 7
Operation of clear switch in switch group 11
(ON) to determine if there is an ON event, and
If there is an event (YES), proceed to step 30
In the case of no event (NO), step 31 in FIG.
Jump to Step 30: YES is determined in the step 29.
That means that the operator operates the clear switch and
The performance data corresponding to the selected song number is stored in the performance memory.
4 means delete from song number
Range corresponding to the song number stored in the star SNG
Clear, that is, corresponding to the song number in the performance memory
Free up memory space. Step 31: Scan the switch detection circuit 7
Start / stop switch in switch group 11
Whether or not there is an ON event by operating the switch (ON).
Judge, if there is an ON event (YES), step
32 or less, and if there is no event (NO),
Jump to step 3C. Step 32: The running state flag RUN is inverted. sand
That is, when the start / stop switch is operated
If the running state Sorag RUN is "1", it
Is reset to “0”, and if it is “0”, “1”
Stand up. In this embodiment, the start / stop
Automatic performance starts and stops every time the switch is operated
It is supposed to be. Step 33: As a result of the reversal process of step 32,
It is determined whether or not the line status flag RUN is “1”, and “1”
If (YES), proceed to step 34, if "0"
Goes to step 39. In step 33, the running state flag RUN is set.
Is determined to be "1", so the current
The processing corresponding to the current operation mode is performed in steps 34 to
Step 38 is performed. Step 34: The operation mode number register MOD is
It is determined whether it is “0”, and if “0” (YES),
Proceed to step 36, if "1" or "2", step
Go 35. Step 35: The operation mode number register MOD is
It is determined whether it is “2”, and if “2” (YES),
Proceed to step 37, and if "1", proceed to step. Step 36: In step 34, the current operation mode is
Since it was determined to be "0", here the normal automatic accompaniment
Various initial settings are made. Step 37: If the current operation mode is
Since it was determined to be "2", here the normal sequence
Various initial settings for performing accompaniment are made. Step 38: In the step 35, the current operation mode is
Since it was determined to be "1", here the song number register
Star SNG, that is, the accompaniment of the stored song number
The data is read from the performance memory 4 and the accompaniment data
To detect the chord progression. And the detected code base
Write row data to a predetermined memory area of the working memory 3.
Get in. This chord progression detection method is a well-known chord detection method.
Detailed description is omitted here.
You. In step 33, the running state flag RUN is set.
Is determined to be "0", the processing for stopping the performance
The processing is performed in steps 39 to 3B. Step 39: The operation mode number register MOD is
It is determined whether it is “0”, and if “0” (YES),
Proceed to step 36, if "1" or "2", step
Go 35. Step 3A: In step 39, the current operation mode is
Since it was determined to be "0", here the normal automatic accompaniment
Perform processing to stop. Step 3B: In step 39, the current operation mode is
Since it was determined to be "1" or "2", the performance
To sequential accompaniment data stored in Mori 4
A process for stopping sequence based accompaniment is performed. Step 3C: Scan key press detection circuit 6
The key event caused by the operation of the keyboard 10
And if there is a key event (YES),
Proceed to step 3D, and if there is no key event (NO),
Jump to Step 3E. Step 3D: There is a key event in step 3C
(YES), corresponding to the key event
The key event processing shown in FIG. 4 is performed. Step 3E: Perform processing for other events
Yes, return. FIG. 4 is a key event of step 3D of FIG.
It is a figure showing the details of processing. This key event processing is
Are executed in order in steps such as Step 40: The operated place of the operated keyboard 10 is the left key range
Whether the note number corresponding to the key press is predetermined
Judge whether it is smaller than the split point of
If yes (YES), the operation is in the left key range, so step 42
If it is larger (NO), the operation is in the right key range, so
Proceed to step 41. That is, in this embodiment, the keyboard
10 is divided into a right key area and a left key area with a predetermined key as a boundary.
Key event by playing operation is regarded as melody performance
The key event by playing the left key range is a chord performance
Treated as deemed. Step 41: The operated part is the keyboard 10
(NO) is determined in the step 40
Therefore, the key on / off processing corresponding to the key event
The process proceeds to step 3E in FIG. That is, the key
If the event is a key-on event, perform sound processing.
In the case of a key-off event, a mute process is performed. Step 42: The operated portion is the left key range of the keyboard 10.
(YES) in step 40,
Here, whether the operation mode number register MOD is "2"
And if "2" (YES), go to step 46.
Proceed to step 43 if “0” or “1” (NO)
move on. Step 43: At the step 42, the current
Since the operation mode was determined to be “0” or “1”,
Here, chord detection based on the key event
Perform processing. For example, multiple key-on events
Sort the resulting keycodes in ascending order of sound (sort
E), a chord is detected according to the sorted result. What
At this time, a chord having a key depression abbreviation is also detected. In addition,
-If the number of on-events is two or one,
The chord type may be detected based on the outputted chord.
It goes without saying that other chord detection methods may be used.
No. Step 44: The chord detection process of step 43 is performed.
Whether a chord (chord) has been established
It is determined whether or not the chord can be detected, and the chord (cord)
Is satisfied (YES), the flow advances to the next step 45.
If the chord (chord) is not established (NO), the step of FIG.
Proceed to Step 3E. That is, the number of key-on events is small.
Or chord structures corresponding to key code combinations
May not be able to detect chords
Because there is. Step 45: The chord detected in step 43
Is stored in the root register RT and detected in the same way.
Type of chord (chord) is stored in type register TP
Then, the process proceeds to step 3E in FIG. Step 46: At the step 42, the current
Since the operation mode was determined to be "2",
Performs key on / off processing based on key events. You
That is, if a chord is pressed,
Is produced. Step 47: Whether the recording mode flag REC is "1"
Is determined, and if “1” (YES), the process proceeds to step S48.
Proceeds to “0” (NO), and proceeds to step 3E in FIG.
No. Step 48: In step 47, the current recording mode is
"1", selected by the song selection switch
As the chord base part of the performance data of the song number,
The key on / off data is stored in the performance memory 4.
That is, in this embodiment, the operation mode is “2”.
Based on the sequential accompaniment data in the performance memory 4
When a new key press (key event) occurs during automatic accompaniment
If the key event data is
It is stored in the memory 4 and data is rewritten
You. FIG. 5 shows 96 timer divisions per quarter note.
FIG. 9 is a diagram illustrating an example of an interrupt process executed in the process.
This interrupt processing is executed in the following steps in order.
It is. Step 50: Whether the running state flag RUN is "1"
Is determined, and if “1” (YES), the flow proceeds to step 51.
If "0", return. Step 51: It is determined in step 50 that the vehicle is in the running state.
Therefore, here, the operation mode number register MOD
Is "0", and if "0" (YES),
Proceed to step 52, and if "1" or "2",
Proceed to step 54. Step 52: The operation mode in step 51
Since it was determined that this was a normal automatic accompaniment for mode "0",
Is stored in the style number register STYL.
Drum according to style number and timing clock
Read the part data from the accompaniment pattern memory 5
Reproduce. That is, the drum pattern corresponding to the style number
Data is read out sequentially according to the clock timing
And play. Step 53: Store in style number register STYL
According to the style number and timing clock
Pattern data in the base chord part
And read the data sequentially from the root register
Note based on RT and value stored in type register TP
Convert and play. Step 54: The operation mode in the step 51
Determined to be a sequence accompaniment for mode "1" or "2"
So here, the performance notes according to the timing clock
The value stored in the song number register SNG (song number
) From the drum part corresponding to
Put out and play. Step 55: Performance memory according to the timing clock
4 stored in the song number register SNG (song number
Accompaniment data in order from the chord base part corresponding to
Is read. Step 56: Operation mode number register
It is determined whether the MOD is “1” or not and “1” (YES)
If yes, go to step 57; if "2", go to step 5
Go to 9. Step 57: The operation mode is "1" in step 56
(YES), so here, the step
Code progress data detected by the process of step 38
Read the chord (chord) corresponding to the timing clock from
Source, chord (chord) root source
The chord (chord) type
Stored in the type register STP. Step 58: By the above step 55
Saw the note number of the read chord base part
Root register SRT, source type register STP and
Note conversion is performed according to the
Play back the data. Note that the source root register SR
T, source type register STP and type register T
For the method of note conversion based on P,
It is described in Japanese Patent Application Laid-Open No.
The detailed description is omitted here. Step 59: The operation mode is "2" in step 56.
(YES), so here the performance memory
4 to sequentially read the sequential accompaniment data
In order to perform the usual sequence accompaniment, the
Performs processing that simply reproduces the output data, and
Proceed to Step 5C. Step 5A: Recording Mode Flag REC
It is determined whether it is “1”, and if “1” (YES),
Proceed to step 5B, and if “0” (NO), step 5
Go to C. Step 5B: In step 5A, the current recording mode is
Since it was determined to be “1”, here the song selection switch
Performance data of the song number SNG selected by the switch
The playback data of the drum part and chord base part
(Reproduced by the processing of step 53 or step 58)
Stored in the performance memory 4 respectively.
You. That is, in this embodiment, the operation mode is
The playback data for "0" or "1" is stored in the performance memory 4.
Newly recorded as sequential accompaniment data
You. Step 5C: Timing preparation for the next interrupt processing
Advance the counter and return. In the above embodiment, the sound source circuit and
I explained about an electronic musical instrument with a built-in automatic performance device,
Sequencer module for automatic performance processing and tone generator circuit
And the sound source module consisting of
The exchange of data between modules is based on the well-known MIDI standard
What is equally applicable to what is configured to do
Needless to say. In the above embodiment, the step
As shown in step 48, real-time
Recording, or interrupt timing as in step 5B.
Recording in real time
However, it may be recorded in a non-real way. [0041] According to the present invention, a sequential performance
Easy to play a part of performance data according to chord specified by user
There is an effect that can be changed to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a hardware block diagram showing an embodiment of an electronic musical instrument to which an automatic performance device according to the present invention is applied. FIG. 2 is a diagram illustrating a first half of an example of a main routine processed by a microcomputer. FIG. 3 is a diagram illustrating a latter half of an example of a main routine processed by the microcomputer. FIG. 4 is a diagram showing details of a key event process in the main routine of FIG. 3; FIG. 5 is a diagram illustrating an example of interrupt processing executed by 96 timer interrupts per quarter note; [Description of Signs] 1 ... CPU, 2 ... Program Memory, 3 ... Working Memory, 4 ... Performance Memory, 5 ... Accompaniment Pattern Memory, 6 ...
Key press detection circuit, 7: switch detection circuit, 8: display circuit,
9 ... tone generator circuit, 10 ... keyboard, 11 ... switch group, 12 ...
LCD, 13: Sound system, 14: Timer, 16
... Data and address bus

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G10H 1/00-7/00

Claims (1)

(57) [Claims 1] Pattern storage means for storing pattern data relating to accompaniment, chord specification means for specifying a chord for reproduction performance, and said pattern storage means being stored in said pattern storage means. Performance data creation means for reading pattern data based on the first chord specified by the chord designation means and creating a series of performance data; and performance data for storing the performance data created by the performance data creation means Storage means; chord detection means for detecting chord progression based on the series of performance data stored in the performance data storage means; chord progression detected by the chord detection means and designated by the chord designation means. and the second based on the chord; and a converting means for converting the music data, the Starring
The performance data storage means stores the performance converted by the conversion means.
An automatic performance device for storing performance data .