JP3909677B2 - Automatic performance device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic performance device, and more particularly to an automatic performance device capable of switching a plurality of stored performance patterns during automatic performance.
[0002]
[Prior art]
An automatic performance device that repeatedly reproduces performance information of a plurality of measures is known (for example, Japanese Patent Laid-Open No. 56-19098). This automatic performance device is often implemented as an automatic accompaniment device mounted on an electronic musical instrument. Performance information in which a plurality of measures are repeatedly reproduced is referred to as performance pattern information, and hereinafter simply referred to as “pattern information”. Pattern information is set for each part such as a drum and bass, and for each section such as an intro and ending, and is preset for an automatic performance device, and is set individually by a user.
[0003]
In the automatic performance apparatus described in the above publication, in order to avoid the monotonousness of the performance due to the repetition of the pattern information, it is determined in which step the performance is to be started from among the plurality of stored steps (corresponding to measures). It can be preset as a value.
[0004]
[Problems to be solved by the invention]
When the pattern information is switched in the middle of the performance, which measure of the pattern information after the switching is determined in advance for each automatic performance device, the user cannot arbitrarily select it. Either the performance is continued from the measure corresponding to the measure being played at the time of switching, or the performance is started from the first measure of the pattern information.
[0005]
On the other hand, a user who wants to realize various forms of performance has a desire to use these pattern information arbitrarily, but conventional automatic performance apparatuses cannot satisfy this requirement. It was.
[0006]
The present invention provides an automatic performance apparatus that solves the above-described problems and can arbitrarily select from which measure of the pattern information the performance after the switching is started when the pattern information is switched during the performance. The purpose is to do.
[0007]
[Means for Solving the Problems]
In order to solve the above problems and achieve the object, the present invention provides a storage means for storing a plurality of types of pattern information consisting of a plurality of measures, an automatic performance means for automatically performing according to the pattern information, and pattern information during automatic performance. In an automatic performance apparatus having pattern information switching means for switching between, when changing pattern information, setting means for setting from which measure of the pattern information after switching to start performance after switching, and at the time of pattern information switching, A first feature is that pattern information reading means for reading pattern information from the storage means to the automatic performance means according to the setting of the setting means is provided.
[0008]
Further, the present invention provides the pattern information editing means in which the setting means is provided on the pattern information, and information indicating from which measure of the changed pattern information the performance after switching is started is described on the pattern information. There is a second feature in that
[0009]
According to the above feature, when the pattern information is switched during the performance, it is determined according to the setting contents of the setting means from which measure the performance starts. Then, the pattern information is read according to the set contents, and the automatic performance is continued.
[0010]
In particular, according to the second feature, when pattern information is edited, the pattern information editing means can describe information indicating from which measure the pattern information is read.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 2 is a block diagram showing a hardware configuration of an electronic keyboard instrument capable of automatic performance according to an embodiment of the present invention. In the figure, a CPU 1, a program memory 2, a musical tone waveform memory 3, a RAM 4, a panel interface circuit 5, a keyboard interface circuit 6, an automatic performance data memory 7, a disk interface circuit 9, and a tone generator 10 are connected to the bus line 16. Is done.
[0012]
An operation panel display device 11 is connected to the panel interface circuit 5, a keyboard device 12 is connected to the keyboard interface circuit 6, and a floppy disk drive (FDD) 13 is connected to the disk interface circuit 9. A sound system 17 is connected to the sound source device 10 via a D / A converter 14, an analog signal processing device 15, and an amplifier 16. The sound source device 10 includes a plurality of music sound generation channels so that a plurality of music sounds can be generated simultaneously. Further, the CPU 1 is connected to an external device such as another electronic musical instrument via the MIDI interface circuit 8.
[0013]
The program memory 2 stores a program to be processed by the CPU 1, the musical sound waveform memory 3 stores musical sound waveform data, and the automatic performance data memory 7 stores automatic performance data, that is, sequence information and pattern information. These memories 2, 3 and 7 can be constituted by ROM. The RAM 4 is used as a registration storage area such as a work area for temporarily storing various data when the CPU 1 executes a program, and a tone color and an effect set by operation of the operation panel display device 11.
[0014]
The operation panel display device 11 includes various switches and volumes such as an LCD screen and a registration switch, and indicator lights such as LEDs. The switch is also provided with a switch for switching pattern information during automatic accompaniment. The operation panel display device 11 is disposed on, for example, a control panel provided adjacent to the keyboard device 12.
[0015]
The CPU 1 controls the tone generator 10 as a tone generator based on the program, the key information input from the keyboard device 12 and the timbre, tempo, rhythm, etc. input from the operation panel display device 11. A musical tone signal is generated based on the waveform data read out from. In the automatic performance mode, automatic performance data stored in the automatic performance data memory 7 is used in place of the key information input from the keyboard device 12. In particular, during automatic accompaniment, pattern information composed of a plurality of measures is read and used. The tone signal generated by the tone generator 10 is converted into an analog signal by the D / A converter 13. The analog signal is subjected to signal processing such as effect addition by the analog signal processing device 14 and then supplied to the sound system 17 via the amplifier 16.
[0016]
Next, the main part of the automatic performance process executed by the CPU 1 will be described. First, a description will be given of a function for creating / editing pattern information used for automatic performance. In this creation / editing process, the rhythm, time signature, number of measures, setting of the creation / editing target, and writing of the set data are performed. FIG. 3 is a diagram showing a main part of the operation panel display device 11. In FIG. 3, the LCD screen 20 has a plurality of display areas A1 to A8, and left buttons L1 to L4 and right buttons R1 to R4 are provided corresponding to the display areas A1 to A8. Are provided with function keys F1 to F7. In addition, a user switch 21, an execution switch 22, a home switch 23, an increment dial 24, and a plurality of rhythm switches 25 and variation switches 26 are provided. The rhythm switch 25 designates a rhythm such as 8 beats, 16 beats, waltz and swing. Specific functions of the buttons and switches will be described later.
[0017]
FIG. 4 is a flowchart showing the main part of the pattern information editing process. In FIG. 4, in step S100, it is determined whether or not rhythm selection is started. When the user switch 21 is pressed, the process proceeds from step S100 to step S101, and a pattern information rhythm setting screen is displayed on the LCD screen 20. On the rhythm setting screen, a plurality of existing rhythms (waltz, march, swing, etc.) are displayed in the respective areas A1 to A8 for each section. At the same time, the left buttons L1 to L4 and the right buttons R1 to R4 corresponding to each region are associated as rhythm selection switches corresponding to each rhythm.
[0018]
In step S102, it is determined whether one of the displayed rhythms has been selected, depending on whether the rhythm selection switch has been pressed. If the rhythm selection switch has been pressed, the process proceeds to step S103, and the rhythm assigned to the pressed rhythm selection switch is selected. In step S104, it is determined whether or not the home switch 23 has been pressed. If the home switch 23 has been pressed, the home screen is displayed in step S105. This completes the rhythm setting. Note that if there is no input within a predetermined time in steps S102 and S104, this flow ends as an error.
[0019]
The time signature and the number of measures are set in the same way as the rhythm. However, after displaying the setting screen for the time signature and the number of measures corresponding to step S101, the numerical value displayed on the LCD screen 20 is changed by turning the increment dial 24 instead of the buttons L1 to L4 and R1 to R4 to obtain a desired numerical value. When the message is displayed, the execution switch 22 is pressed for determination.
[0020]
The pattern information includes elements such as parts and sections, and the target is selected in creation / editing. FIG. 5 is a flowchart of creation / editing object selection. In FIG. 5, an APO edit screen is displayed in step S201. The APO edit screen displays a screen for inputting whether to newly create or use an existing rhythm (pattern selection) to edit. Since the characters “New creation” and “Pattern selection” are displayed at the bottom of the LCD screen 20, the user operates the function keys F1 to F7 at positions corresponding to the respective characters to select one. In step S202, when either “new creation” or “pattern selection” is selected, an input screen is displayed accordingly (steps S203 and S204). The creation / editing object selection operation will be specifically described below with reference to the pattern selection screen.
[0021]
FIG. 6 is a diagram of an LCD screen including an example of the pattern selection screen displayed in step S205. As shown in FIG. 6, the selection target is the part, section, track, sound, and bar mode. The parts are drums (2 types), chords (2 types), bass, and the like, and the sections are intro, ending, fill-in (2 types), etc. in addition to the displayed main set for each part. The track has major and minor distinctions for all parts and sections. Sound determines the tone of the pattern information. For example, in the case of a drum part, a kit is set.
[0022]
The bar mode is information that specifies from which measure the performance starts when the pattern information is switched during the automatic accompaniment. Set either “Continuous” or “Reset”. “Continuous” reads and plays the pattern information after switching from the beginning of the measure that was played when switching, and “Reset” reads and plays the pattern information from the beginning of the pattern information, that is, the first measure It is.
[0023]
When selecting a part, a desired one of the part name displays such as “Drum 1” is selected by operating the function keys F5 or F6 below the “Select” display. The selected part name changes its display form from that of other parts, for example, by reversing black and white. The section, sound, track, bar mode, and the like are selected by pressing the buttons L1 to L3 or R1 corresponding to the respective display areas, and then the desired data is selected by turning the increment dial 24. The bar mode is common to all parts and is not set for each part.
[0024]
After selecting and setting the editing target in the above procedure, the music data of the pattern information is input and the creation of the pattern information is finished.
[0025]
The data structure of the pattern information is shown in FIG. In FIG. 7, 20 types of pattern information can be set by combining the rhythm switch 25 and the variation switch 26, for example. Therefore, as shown in the figure, the pattern information 33 is composed of 20 styles Style1 to Style20, and the style size, the start address (relative address), and the data end address are further added.
[0026]
Each of the styles Style1 to Style20 includes ten phrases Phrase1 to Phrase10, and each of the phrases Phrase1 to Phrase10 includes seven tracks Track1 to Track7. Each track Track1 to Track7 is composed of a track header and track data, that is, rhythm, time signature, number of measures, and the like.
[0027]
Phrases correspond to major and minor sections such as intro, ending, basic, and two types of fill-in, and tracks correspond to two types of drums, bass, two types of chords, riffs, and other.
[0028]
The data structure of the track header is shown in FIG. The track header 32 is composed of 7 bytes, and a start bar bit (SB), that is, the bar mode is set in one bit of the head byte. The start bar bit “0” means continuous, and the start bar bit “1” means reset. In addition, tone color information, volume, reverb depth, etc. are described in the track header. Since the bar mode is common to each part, only one of the track storage areas, for example, the start bar bit of only the track header of one drum part is valid.
[0029]
FIG. 9 is a flowchart of the main routine process of the electronic keyboard instrument. In FIG. 6, in step S1, various registers and flags are initialized. After the initialization, first, in step S2, switch event processing, that is, the presence / absence of operation of the LCD screen, switch, and volume included in the operation panel display device 11, that is, presence / absence of a switch event is determined. Perform appropriate processing. In step S3, the presence or absence of a key operation of the keyboard device 12, that is, the presence or absence of a key event, is determined from the key information. If there is a key event, processing corresponding to the key event is performed.
[0030]
In step S4, MIDI processing, that is, MIDI information transmission / reception processing with an external device is performed. In step S5, automatic performance processing based on the pattern information is performed.
[0031]
In step S6, a display process, that is, a process for displaying a process result associated with each of the above processes on a display unit of the operation panel display device 11, that is, an LCD screen or a display lamp is performed. In step S7, other processing (including creation / editing of pattern information) is performed.
[0032]
FIG. 10 is a flowchart showing processing when pattern information is switched during automatic performance. In step S30, it is determined whether or not there is a pattern information switching instruction. When pattern information is instructed by the rhythm switch 25 and the variation switch 26, step S30 becomes affirmative and the process proceeds to step S31. In step S31, the start bar bit set in the track header of the drum 1 part in the track storage area is referred to. In step S32, the automatic performance start measure after switching the pattern information is determined depending on whether the start bar bit is “0” or “1”. When the start bar bit is “0”, the process proceeds to step S33, and the performance start pointer is set to the head of the measure being played at the time of pattern switching. On the other hand, if the start bar bit is “1”, the process proceeds to step S34, where the start pattern bit is set to the head of the designated pattern information. In step S35, the track data is read from the set performance start pointer, and the automatic performance is executed according to the data.
[0033]
FIG. 1 is a main functional block diagram for switching pattern information. The pattern information storage unit 27 stores pattern information associated with the rhythm switch 25. The pattern information reading unit 28 performs reading control including a pointer instruction in order to read pattern information from the pattern information storage unit 27 to the automatic performance unit 29. The pattern switching instruction section 30 detects a switching instruction based on an ON event of the rhythm switch 25 and the variation switch 26 generated during the performance, and generates a pattern information switching signal. This switching signal includes pattern information indicating information by a combination of the rhythm switch 25 and the variation switch 26. The switching signal is input to the pointer instruction unit 31. The pointer instruction unit 31 determines the start bar bit with reference to the track header of the instructed pattern information. If the start bar bit indicates “continuous”, the pattern instruction unit 31 supplies the pattern information reading unit 28 with an instruction to set the read pointer to the head of the measure that was played before switching. On the other hand, if the start bar bit indicates “reset”, an instruction to set the reading pointer to the head of the selected pattern information is supplied to the pattern information reading unit 28. The pattern information reading unit 28 sets a pointer in response to these instructions, and starts reading pattern information.
[0034]
【The invention's effect】
As is apparent from the above description, according to the first and second aspects of the invention, from which measure the pattern performance information after switching is read out is selected in response to the pattern information switching performed during the performance. be able to. Therefore, the pattern information can be read and automatically played in the switching mode desired by the user. In particular, the user can instruct pattern reading measures when editing pattern information.
[Brief description of the drawings]
FIG. 1 is a block diagram showing main functions of an automatic performance device according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration of an electronic keyboard instrument having an automatic performance function according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating an example of an operation panel display device.
FIG. 4 is a flowchart of a rhythm selection process.
FIG. 5 is a flowchart of an edit target selection process.
FIG. 6 is a diagram showing a display example of the operation panel display device during editing.
FIG. 7 is a diagram illustrating an example of a data structure of pattern information.
FIG. 8 is a diagram illustrating an example of a track header of pattern information.
FIG. 9 is a flowchart of a main routine process of the electronic keyboard instrument according to one embodiment of the present invention.
FIG. 10 is a flowchart showing a pattern switching processing routine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... CPU, 9 ... Disk interface, 11 ... Operation panel display device, 20 ... LCD screen, 25 ... Rhythm switch, 26 ... Variation switch, 27 ... Pattern information storage part, 28 ... Pattern information reading part, 29 ... Automatic performance part 30 ... Pattern switching instruction section

Claims (2)

Storage means for storing a plurality of types of pattern information including performance information consisting of a plurality of measures;
Automatic performance means for performing automatically according to the performance information ;
During automatic performance by the automatic performance means, pattern information switching for outputting a switching signal including pattern information instruction information in order to switch the pattern information during automatic performance to another pattern information stored in the storage means In an automatic performance device having means,
A setting means for setting in advance from which measure of the performance information included in the pattern information after switching when to start the performance after switching when switching the pattern information by the switching signal ;
An automatic performance apparatus comprising pattern information reading means for reading pattern information from the storage means to the automatic performance means in accordance with the setting of the setting means at the time of switching pattern information. The setting means is provided on the pattern information;
2. The automatic performance according to claim 1, further comprising pattern information editing means for describing, on the pattern information, information indicating from which measure of the pattern information after switching the performance after switching is to be started. apparatus.

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