JP4056902B2 - Automatic performance apparatus and automatic performance method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic performance apparatus and an automatic performance method applied to, for example, an electronic musical instrument, and more particularly to a technique for controlling the progress of automatic performance performed based on automatic performance data.
[0002]
[Prior art]
A conventional automatic performance apparatus stores a plurality of automatic performance data corresponding to each of a plurality of songs in a memory. Each automatic performance data is composed of a plurality of note data. Each note data is used to generate one note, and is composed of data designating a key number, step time, gate time, and velocity, as shown in FIG. 16, for example. The “key number” corresponds to, for example, a number assigned to each key of the keyboard device, and is used for designating a pitch (pitch). “Step time” is used to specify the timing (time) of the start of sound generation. “Gate time” is used to specify the length of the pronunciation (sound length). “Velocity” is used to specify the strength of the sound. Automatic performance data corresponding to one piece of music is composed of such note data arranged in order of step times.
[0003]
When one piece of music is selected in this automatic performance device and the start of automatic performance is instructed, the control unit of the automatic performance device reads the automatic performance data corresponding to the selected music from the memory, and this read automatic performance Pronunciation based on data. Thereby, the selected music is automatically played.
[0004]
Specifically, when the start of automatic performance is instructed, a count-up operation of a sequencer counter (SEQ_CNT described later) is started. The sequencer counter is incremented every step. One step is uniquely defined by the model such as 1/24, 1/48, 1/96, etc. of one beat. The actual time of one beat is determined according to the tempo. Therefore, the real time of one step, that is, the real time interval of the count-up of the sequencer counter is determined according to the tempo.
[0005]
One note data is read from the memory while the sequencer counter is operating. Then, the step time in the note data is compared with the contents of the sequencer counter. If they do not match, it is determined that the note data has not reached the sounding timing. Thereafter, the comparison operation is repeated at a predetermined cycle in the same manner. If the step time in the note data coincides with the contents of the sequencer counter during repeated execution of this comparison operation, it is determined that the note data has reached the tone generation timing, and the tone generation process based on the note data is performed. At this time, the gate time data in the note data is set to the gate time (Gate [Note] described later). As a result, generation of a sound having a pitch specified by the key number in the note data and a strength specified by the velocity is started. When the start of sound generation based on one piece of note data is completed, the next piece of note data is read from the memory, and the same processing as described above is repeated.
[0006]
On the other hand, the sound for which sound generation has started is muted when the time designated by the gate time in the note data has elapsed. That is, the gate time in which the gate time data is set in the sound generation process is subtracted by the gate time counter. Then, when the content of the gate time becomes zero or less, a mute process is performed to mute the sound being sounded. As described above, the sound generation process and the mute process are executed one after another, so that one piece of music is automatically played.
[0007]
By the way, in recent years, an automatic performance apparatus with a concert magic function (CM described later) applying the above-described automatic performance apparatus technology has been developed. Here, the “concert magic function” is a function for reading out note data from the memory at a timing instructed by the performer, for example, a key-pressed timing, and starting sound generation based on the note data. In this automatic performance device with a concert magic function, automatic performance data generally used in the conventional automatic performance device described above is used. However, the step time data in each note data constituting the automatic performance data is not used. Instead, the sound generation timing is given by the player from the outside.
[0008]
In an automatic performance device with a concert magic function, the keyboard device is simply used as a means for giving a sounding timing. That is, when any key of the keyboard device is pressed, a sound generation process based on the note data having the next step time data is performed, and the automatic performance proceeds.
[0009]
In short, an automatic performance device with a concert magic function can be said to be an automatic performance device in which the pitch and length are determined based on automatic performance data, and the sound generation timing and sound intensity are determined by instructions from the performer. . In the conventional automatic performance apparatus, since the automatic performance automatically proceeds, there is no room for the performer to intervene. On the other hand, in an automatic performance device with a concert magic function, since the player performs automatic performance by instructing the sound generation timing, the player can obtain a satisfaction as if he / she was playing. it can.
[0010]
Even in an automatic performance device with a concert magic function that provides such satisfaction, if the automatic performance progresses by the player instructing the sound generation timing, the progress of the automatic performance cannot be reversed. Therefore, if the performer mistakenly advances the automatic performance, the original performance cannot be restored, so that there is a problem that the performance is inferior.
[0011]
Therefore, the present applicant has proposed a configuration in which a reverse process for returning a concert magic performance in units of measures to an arbitrary position is performed each time a predetermined instruction is given by an operation such as pressing a reverse switch (patent) Reference 1). Thus, even if the performer mistakenly advances the automatic performance in the middle of the song, it can be restored, so that it is possible to perform a concert magic performance with excellent usability.
[0012]
[Patent Document 1]
JP 11-311989 A (page 9-11, FIG. 10 and FIG. 11)
[0013]
[Problems to be solved by the invention]
However, in the above configuration, each bar unit is simply returned to a predetermined position, and it is often not clear to the player how far it has returned. Therefore, when you next press the key, you will not know where the song will start (you will lose track of where you want to play if you are a performer), making it easier to use than you originally expected. The goodness was not drawn out.
[0014]
The present invention was devised in view of the above circumstances, and can perform a concert magic performance that is even more convenient when the performer mistakenly advances the automatic performance in the middle of the song and restores it to its original state. It is intended to provide an automatic performance device and an automatic performance method.
[0015]
[Means for Solving the Problems]
The automatic performance device according to the present invention is
Storage means for storing automatic performance data comprising a plurality of note data;
A key press detecting means for detecting that a key was pressed;
Each time it is detected by the key pressing detection means that the key is pressed, the note data is read from the storage means, and sound is generated based on the read note data, so that automatic performance is advanced. Playing means,
An instruction means for giving instructions while the automatic performance is in progress;
In response to an instruction from the instruction means, the progress of the automatic performance is returned, and the automatic performance means according to the automatic performance data is performed according to the automatic performance data without detecting the key press until a predetermined position, Reverse key press waiting means for waiting for key press detection when automatic performance progresses to
It has the basic feature of having
[0016]
According to the above configuration, when an instruction is given by the instruction means, the automatic performance data is returned to the predetermined position without detecting the key depression by returning the progress of the automatic performance by the reverse key depression waiting means. The automatic performance means according to the above is performed by the automatic performance means, and when the automatic performance has progressed to the position, the key press detection is waited. Since it can be confirmed, the melody is understood and the timing of the next key pressing can be performed more appropriately.
[0017]
When an instruction is given by the instruction means, the reverse key press waiting means returns the progress of the automatic performance to an arbitrary number of measures (for example, one measure) before the measure that has been played so far, and The performance means performs an automatic performance according to the automatic performance data, stops the progress of the automatic performance in front of the measure that was being performed, and sets the standby state for the next key press detection (display) However, if the performer mistakenly advances the automatic performance in the middle of the song, the player can quickly return to the original state (claim 2).
[0018]
The configurations of claims 3 and 4 are defined by re-taking the configuration of the apparatus of claims 1 and 2 as a method configuration.
[0019]
That is, the configuration of the automatic performance method of claim 3 corresponds to the configuration of claim 1, more specifically, automatic performance data composed of a plurality of note data is stored, and each time a key depression is detected, the automatic performance data is stored. An automatic performance method that reads out stored note data and produces a sound based on the data, thereby advancing the automatic performance. When a predetermined instruction is given during the automatic performance that progresses every time a key is detected. The automatic performance is returned in response to the instruction, and the automatic performance according to the automatic performance data is performed up to a predetermined position without detecting the key press, and the automatic performance proceeds to the position. It is characterized by being in a state of waiting for detection of a key press.
[0020]
Further, the configuration of the automatic performance method of claim 4 corresponds to the configuration of claim 2, and more specifically, when an instruction from the performer is given, an arbitrary performance can be selected from the measures that have been performed until then. The progress of the automatic performance is returned to a few bars before, and the automatic performance is performed according to the automatic performance data. It is characterized by setting to a standby state.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an automatic performance device according to an embodiment of the present invention will be described in detail with reference to the drawings. Although this automatic performance device can be configured as an independent device, an automatic performance device incorporated in an electronic musical instrument will be described below.
[0022]
FIG. 1 is a block diagram showing a configuration of an electronic musical instrument to which an automatic performance device according to an embodiment of the present invention is applied. The electronic musical instrument includes a central processing unit (hereinafter referred to as “CPU”) 10, a program memory 11, a work memory 12, an automatic performance data memory 13, a keyboard scan circuit 14, and a tone generation circuit that are connected to each other via a system bus 20. 15 and timer 16. An operation panel 101 and an external interface circuit 102 are connected to the CPU 10. An interrupt signal is supplied from the timer 16 to the CPU 10. A keyboard device 141 is connected to the keyboard scan circuit 14. Further, a key & tone assigner 151 is interposed between the musical sound generating circuit 15 and the system bus 20, an amplifier 152 is connected to the musical sound generating circuit 15, and a speaker 153 is connected to the amplifier 152. Yes.
[0023]
The CPU 10 controls the entire electronic musical instrument according to a control program stored in the program memory 11. The processing performed by the CPU 10 will be described in detail later with reference to a flowchart.
[0024]
For example, as shown in FIG. 2, the operation panel 101 is provided with a concert magic switch (hereinafter referred to as “CM switch”) 200, a help switch (HELP switch) 201 corresponding to an instruction unit of the present application configuration, and a song button 202. . Although not shown, the electronic musical instrument is provided with, for example, an automatic performance switch, a volume switch, a tone color selection switch, a reverberation effect selection switch, etc. in addition to these switches. In addition, the operation panel 101 is provided with an LCD screen 300 used as a display device for displaying various messages.
[0025]
The CM switch 200 is used to specify whether or not to use the concert magic function. The setting state of the CM switch 200 is stored in a CM flag described later. This CM flag is inverted every time the CM switch 200 is pressed. That is, when the electronic musical instrument is in the normal performance mode (CM flag = 0), when the CM switch 200 is pressed, the CM flag is set to “1” and the concert magic mode (hereinafter referred to as “CM mode”) is entered. . On the other hand, when the CM switch 200 is pressed in the CM mode (CM flag = 1), the CM flag is cleared to “0” and the normal performance mode is entered.
[0026]
A help switch (HELP switch) 201 is used to give an instruction to the reverse key press standby unit 10b configured by the CPU 10 to execute the function of the reverse key press standby unit.
[0027]
The song button 202 is used by the performer to select a desired song from a plurality of songs for concert magic performance, and the button is appropriately rotated to select from the songs displayed on the LCD screen 300. You will be able to choose. The song number of the song selected by the song button 202 is stored in a song number register to be described later.
[0028]
The operation panel 101 includes a panel interface circuit (not shown). This panel interface circuit scans each switch on the operation panel 101 in accordance with a command from the CPU 10. Then, panel data is created based on a signal indicating the open / closed state of each switch obtained by this scan. Each bit of the panel data corresponds to each of the above switches. For example, “1” represents a switch-on state and “0” represents a switch-off state. This panel data is used to determine whether or not each switch on the operation panel 101 has been pressed (details will be described later).
[0029]
Further, the panel interface circuit sends the display data sent from the CPU 10 to the LCD screen 300 on the operation panel 101. As a result, a message according to the display data is displayed on the LCD screen 300.
[0030]
The external interface circuit 102 controls data transmission / reception between the CPU 10 and an external device. As the external interface circuit 102, for example, a general-purpose interface such as a MIDI interface, an RS232C interface, a SCSI interface, or a model-specific interface can be used according to the type of equipment connected to the outside. As the external device, for example, other electronic musical instruments, personal computers, sequencers, and the like can be used. In this embodiment, it is assumed that a MIDI interface circuit is used as the external interface circuit 102.
[0031]
Further, the timer 16 connected to the CPU 10 generates an interrupt signal at time intervals according to data set by the CPU 10. Therefore, the timer 16 can generate an interrupt signal at a time interval proportional to the tempo. This interrupt signal is supplied to the CPU 10 and used as a trigger for starting each interrupt processing routine described later.
[0032]
The program memory 11 is composed of, for example, a read only memory (hereinafter referred to as “ROM”). The program memory 11 stores various fixed data used by the CPU 10 in addition to the control program described above. The program memory 11 further stores a plurality of tone color parameters for designating tone colors. One tone color parameter is used for designating a tone color of a predetermined range of a predetermined instrument sound. Each tone color parameter is composed of, for example, a waveform address, frequency data, envelope data, filter coefficients, and the like.
[0033]
The work memory 12 is composed of, for example, a random access memory (hereinafter referred to as “RAM”). The work memory 12 is used for temporarily storing various data when the CPU 10 performs various processes. Specifically, the work memory 12 defines various registers, counters, flags, and the like for controlling the electronic musical instrument. The main registers, counters, flags, etc. are shown below. Other than the following, it will be described as it appears below.
[0034]
(1) Automatic performance flag: Stores whether the electronic musical instrument is in the automatic performance mode or the normal performance mode.
(2) Concert magic flag (hereinafter referred to as “CM flag”): Stores whether this electronic musical instrument is in the CM mode or the automatic performance mode.
(3) Song number register: Stores the song number of a song for concert magic performance.
(4) Address register (R_ADD): Holds an address (hereinafter referred to as “read address”) on the automatic performance data memory 13 where the currently executed note data is placed.
(5) Key-on counter: Counts the number of keys being pressed. This key-on counter is incremented when the key is pressed and decremented when the key is released. If the contents of this key-on counter are zero, it means that all keys have been released.
(6) Data read request flag: This flag is set when a key is pressed, and is used to instruct that the note data should be read from the automatic performance data memory 13.
(7) Sequencer counter (SEQ_CNT): A counter that is incremented each time a timer interrupt occurs.
(8) Gate time counter (Gate_CNT): This counter is incremented every step time. The contents of the gate time counter are used to determine whether or not the timing for reducing the gate time has arrived in the concert magic performance process described later. When the contents of the gate time counter change, it is recognized that it is the timing to decrease the gate time.
(9) Step buffer (step_buf): Holds the step time value of the read note data.
[0035]
A keyboard device 141 having a plurality of keys is connected to the keyboard scan circuit 14. In the normal performance mode, the keyboard device 141 is used for instructing sound generation by pressing a key and instructing mute by releasing a key. On the other hand, in the CM mode, it is used as a trigger for advancing concert magic performance (specifically, a trigger for reading out the next note data). The keyboard device 141 employs, for example, a two-contact system in which each key is provided with first and second key switches that are turned on at different pressing depths.
[0036]
The keyboard scan circuit 14 scans each key switch on the keyboard device 141 in accordance with a command from the CPU 10. Then, keyboard data is created on the basis of the signal indicating the open / closed state of each key switch obtained by this scan. The keyboard data is composed of a bit string in which each key is associated with 1 bit, and each bit represents, for example, “1” being pressed and “0” being released. At this time, for example, data “1” indicating that the key is being depressed is created when both the first and second key switches are turned on, and the key is being released otherwise. The data “0” representing is generated. The said structure is corresponded to the structure of the key press detection means of this invention.
[0037]
Also, after the first key switch (the first key switch provided in the key) is turned on by the key depression, the second key switch (also the second key switch provided in the key) is turned on. The time until is turned on is measured, and velocity data is created based on the measured time. These keyboard data and velocity data are sent to the CPU 10 via the system bus 20. The CPU 10 determines whether or not a key is pressed / released based on the keyboard data (details will be described later).
[0038]
The automatic performance data memory 13 is composed of a ROM. The automatic performance data memory 13 stores a plurality of automatic performance data corresponding to a plurality of pieces of music for concert magic performance. These automatic performance data are commonly used for normal automatic performance, automatic performance using the concert magic function, and the like. Each automatic performance data is assigned a song number. As the automatic performance data for the concert magic performance, automatic performance data having the same music number as the music number stored in the music number register is selected. Each automatic performance data is composed of a set of note data as described in the section of the prior art.
[0039]
As described above, the CPU 10 reads out a predetermined program from the program memory 11 and controls each part of FIG. 1 while using the work memory 12, and in the configuration of this embodiment, the automatic performance part 10a of the present invention to be described later is used. And the reverse key pressing standby part 10b is comprised.
[0040]
The tone generation circuit 15 is based on the tone volume, key number, and velocity data received by the key & tone assigner 151 from the automatic performance unit 10a, which will be described later, for each channel assigned by the key & tone assigner 151. It is composed of a sound source having a waveform memory (not shown) from which predetermined tone color data is read out. The waveform memory stores waveform data corresponding to each timbre parameter. The waveform data is created, for example, by performing pulse code modulation (PCM) on a musical sound signal generated based on a natural musical instrument sound. This waveform memory can be constituted by a ROM, for example.
[0041]
The key & tone assigner 151 assigns at least one channel for sound generation when sounding, and supplies tone color parameters to the assigned channel. The channel receiving the tone color parameter sequentially reads out waveform data from the waveform memory by the tone generation circuit 15 and adds an envelope to the tone data to generate a tone signal. This musical sound signal is amplified by the amplifier 152 and then supplied to the speaker 153. Thereby, it is converted into an acoustic signal by the speaker 153 and emitted.
[0042]
In the above configuration, the configuration of the present invention is shown as a functional block configuration as shown in FIG.
[0043]
That is, the configuration of the present invention includes an automatic performance data memory 13 for storing automatic performance data composed of a plurality of note data, and a key depression detection unit composed of the keyboard scan circuit 14 for detecting that a key has been depressed. Each time it is detected that the key has been depressed by the key depression detecting section, the note data is read from the automatic performance data memory 13, and the key & tone assigner 151 and the musical tone are read based on the read note data. An automatic performance unit 10a that generates sound from the circuit configuration after the generation circuit 15 and advances the automatic performance, and a help switch (HELP SW) 201 on the operation panel 101 that gives instructions during the automatic performance are configured. In response to the instruction from the instruction unit and the instruction unit, the progress of the automatic performance is returned, and the automatic performance according to the automatic performance data is detected up to a predetermined position without detecting the key depression. There is provided a reverse key press standby unit 10b for causing the automatic performance unit 10a to perform a performance and waiting for detection of a key press when the automatic performance has progressed to that position. Among these, the automatic performance unit 10a and the reverse key pressing standby unit 10b are constituted by the CPU 10 as described above.
[0044]
In the configuration of the present embodiment, as shown in FIG. 4, for example, even if the performer mistakenly advances the automatic performance in the middle of playing the part of measure 4 with concert magic (a state where only a trigger by pressing a key is provided) When the switch (HELP SW) 201 is pressed, the display is changed to the previous bar display, the automatic performance is played from bar 3, and the key press detection unit of the keyboard scan circuit 14 at the head of bar 4 waits for a key press trigger. Will be set to the state.
[0045]
Next, in the above configuration, the operation of the electronic musical instrument will be described in detail with reference to the flowcharts shown in FIGS. Note that the processing shown in the flowchart is all performed by the CPU 10.
[0046]
(1) Main process: FIG. 5 is a flowchart showing the main process of the electronic musical instrument. This main processing routine is started by turning on the power. That is, when the power is turned on, first, the CPU 10, RAM (work memory 12) and other initialization processes are performed (steps S101 to S103). In these initialization processes, the internal hardware of the CPU 10 is set to an initial state, and initial values are set to registers, counters, flags, and the like defined in the work memory 12.
[0047]
When this initialization process is completed, a keyboard process is then performed (step S104). Although details will be described later in this keyboard process, when the electronic musical instrument is in the normal performance mode, a sound generation process corresponding to a key press and a mute process corresponding to a key release are performed. On the other hand, in the CM mode, the fact that the key has been pressed is stored in the data read request flag.
[0048]
Thereafter, panel switch processing is performed (step S105). Although details will be described later in this panel switch process, a process for realizing a function assigned to each switch on the operation panel 101 is performed.
[0049]
Then, automatic performance processing is performed (step S106). Details of this automatic performance processing will be described later.
[0050]
Next, “other main processing” is performed (step S107). In this processing, processing other than those described above, pedal ON / OFF processing, MIDI processing, and DSP processing are performed.
[0051]
Thereafter, the process returns to step S104, and the processes of steps S104 to S107 are repeated. In the course of this repeated execution, if there is an operation on the operation panel 101, an operation on the keyboard device 141, reception of MIDI data in the external interface circuit 102, etc., the electronic musical instrument and the automatic performance device are processed by performing the corresponding processing Various functions are realized.
[0052]
(2) Interrupt process: The interrupt process is performed by interrupting each process of the main process routine according to the interrupt signal. In the interrupt process of this embodiment, two interrupt processes are performed. Details of this interrupt processing are shown in the flowcharts of FIGS.
[0053]
The timer interrupt process every 2 msec shown in FIG. 6 is performed in response to an interrupt signal from the timer 16, first, the panel switch state is acquired (step S201), and the panel switch state is stored in the SW_NEW register. (Step S202). According to the panel switch state, the state is displayed on the panel LED screen 300 (step S203).
[0054]
Another automatic performance clock interrupt process is described with reference to FIG. That is, the content of the sequencer counter (SEQ_CNT) is incremented (step S301). Therefore, the sequencer counter (SEQ_CNT) is incremented at a time interval proportional to the tempo. Next, it is checked whether or not the automatic performance is being performed (step S302). If it is determined in step S302 that automatic performance is being performed (step S302; Y), the contents of the gate time counter (Gate_CNT) are incremented (step S303). Thereafter, the process returns from the clock interrupt processing routine to the interrupted position of the main processing routine. When it is determined in step S302 that automatic performance is not being performed (step S302; N), the process returns from this clock interrupt processing routine. With the above processing, the content of the gate time counter (Gate_CNT) is incremented every step time.
[0055]
(3) Keyboard processing: Next, details of the keyboard processing performed in step S104 of the main processing routine will be described with reference to the flowchart shown in FIG.
[0056]
In this keyboard process, first, keyboard data (hereinafter referred to as “new keyboard data”) is fetched from the keyboard scanning circuit 14, and a key-on event map is created. This key-on event map includes new keyboard data and keyboard data (hereinafter referred to as “old keyboard data”) that has been captured in the previous keyboard processing and is already stored in the old keyboard data register provided in the work memory 12. Created by taking exclusive OR.
[0057]
Based on this, it is checked whether or not there is a key-on event (step S401). This is done by checking whether the key-on event map created as described above is zero. Here, if it is determined that there is no key-on event, that is, the key-on event map is zero (step S401; N), the sequence is checked whether there is a key-off event (step S405). If there is a key-off event (step S405; Y), keyboard mute processing is performed (step S406), and the process returns to the main routine. If there is no key-off event (step S405; N), the process returns to the main routine as it is.
[0058]
On the other hand, if it is determined that there is a key-on event, that is, there is at least one bit that is “1” in the event map (step S401; Y), the state of the CM flag is checked to determine whether the mode is the CM mode. It is determined whether or not the concert magic is being performed (step S402).
[0059]
If it is determined that the mode is not the CM mode (step S402; N), it is recognized that the mode is the normal performance mode, and a normal keyboard sound generation process is performed (step S403).
[0060]
In this normal sound generation process, the key number of the key corresponding to the bit “1” in the key event map is calculated, and the velocity data corresponding to the key is read from the keyboard scan circuit 14. The timbre parameter corresponding to this key number is read from the program memory 11 and sent to the musical tone generation circuit 15 through the key & tone assigner 151 together with the velocity data. As a result, a sound corresponding to the key depression is generated from the speaker 153 with a strength corresponding to the key depression.
[0061]
On the other hand, if it is determined in step S402 that the mode is the CM mode (step S402; Y), the process proceeds to a concert magic song progression process (step S404) described later. In the CM mode, the sound being sounded is muted according to the gate time. The process for muting is performed in the concert magic performance process described later. Therefore, no processing is performed in the CM mode even if there is a key release event. Thereafter, the sequence proceeds to step S405.
[0062]
In the above description, for the sake of simplicity, the case where there is one key depression or key release has been described. However, when there are a plurality of key depressions or key releases, the processing in step S401 and subsequent steps is performed as a key event. What is necessary is just to comprise so that it may repeatedly perform.
[0063]
(4) Panel switch processing: Next, details of the panel processing performed in step S105 of the main processing routine will be described with reference to the flowchart of FIG. In this panel process, a process for realizing a function assigned to each switch on the operation panel 101 is executed.
[0064]
In this panel process, first, panel data (hereinafter referred to as “new panel data”) is fetched from the operation panel 101 into the new panel data register (SW_NEW), and this new panel data and the previous panel process are fetched in the work memory. The on-event map is created by taking the exclusive OR with the panel data (hereinafter referred to as “old panel data”) stored in the old panel data register (SW_OLD) provided in FIG. 12 (step S501). ).
[0065]
Next, on-event processing of a concert magic switch described later is performed from this on-event map (step S502).
[0066]
Further, a help switch on-event process described later is performed from the on-event map (step S503).
[0067]
Thereafter, other switch-on event processing is performed (step S504). Finally, the contents of the new panel data register (SW_NEW) are stored in the old panel data register (SW_OLD) as the contents of the old panel data register (SW_OLD). The contents of the old panel data register (SW_OLD) are referred to in the next panel switch process. Then, the sequence returns to step S106 of the main processing routine.
[0068]
(5) Concert magic switch-on event process: The concert magic switch-on event process shown in step S502 of FIG. 9 will be described with reference to FIG.
[0069]
It is checked from the on-event map created as described above whether there is a concert magic switch-on event (step S601). If there is no on event (step S601; N), the sequence returns to step S503.
[0070]
On the contrary, if there is a concert magic switch-on event (step S601; Y), the CM flag is referred to and it is checked whether or not the concert magic is currently being performed (step S602). If it is currently in concert magic (step S602; Y), the concert magic process is terminated (step S605), and the sequence returns to step S503.
[0071]
On the contrary, if the concert magic is not currently in progress (step S602; N), the music number register is referred to, the musical note data of the concert magic performance music is read from the music number, and the music initial setting is made (step S603). ). Thereafter, a state of concert magic is set (step S604), and the sequence returns to step S503.
[0072]
(6) Automatic performance processing: Next, the details of the automatic performance processing performed in step S106 of the main processing routine will be described with reference to the flowchart of FIG. In this automatic performance process, the automatic performance flag set by the panel switch process is referred to and it is checked whether or not the automatic performance is being performed (step S701). If the automatic performance is not in progress (step S701; N), the sequence returns to step S107 of the main processing routine.
[0073]
If the automatic performance is being performed (step S701; Y), an automatic performance mute process described later is performed (step S702).
[0074]
Then, note data is read from the address indicated by the address register (R_ADD) (step S703), and it is checked whether the data is a data end mark (step S704). If it is a data end mark (step S704; Y), the concert magic process is terminated (step S705), and the sequence returns to step S107 of the main process routine.
[0075]
If it is not a data end mark (step S704; N), it is checked whether the read data is a bar mark or a beat mark (step S706).
[0076]
If the read data is a bar mark or beat mark (step S706; Y), it is checked whether or not the value of the sequencer counter (SEQ_CNT) is 96 or more indicating one beat in the automatic performance device. (Step S707). When the value of the sequencer counter (SEQ_CNT) is smaller than 96 (step S707; N), the sequence returns to step S107 of the main processing routine.
[0077]
On the other hand, if the value of the sequencer counter (SEQ_CNT) is larger than 96 (step S707; Y), the value of the sequencer counter (SEQ_CNT) is set to 0 (step S708) to read the next note data (step S708). The value of the register (R_ADD) is incremented and stored (step S709). Then, it is checked whether or not the value of the address register (R_ADD) has become a stop address value (STOP_ADD) indicating the end of music (step S710).
[0078]
If the value of the address register (R_ADD) is not the stop address value (STOP_ADD) (step S710; N), the sequence returns to step S107 of the main processing routine.
[0079]
On the contrary, if the value of the address register (R_ADD) is the stop address value (STOP_ADD) (step S710; Y), the automatic performance process is stopped (terminated) (step S711). Then, the sequence returns to step S107 of the main processing routine.
[0080]
In step S706, if the read note data is not a bar mark or beat mark (step S706; N), it is checked whether the value of the sequencer counter (SEQ_CNT) is equal to or greater than the step time value of the note data. (Step S712).
[0081]
If the value of the sequencer counter (SEQ_CNT) is not greater than or equal to the step time value (step S712; N), the sequence returns to step S107 of the main processing routine.
[0082]
On the other hand, if the value of the sequencer counter (SEQ_CNT) is greater than or equal to the step time value (step S712; Y), processing such as sound generation is performed, and if the simultaneously read data is musical note data, it is currently sounding. The sound gate time (Gate [note]) is stored (step S713).
[0083]
Then, the value of the address register (R_ADD) is incremented, the value is stored (step S714), the process returns to step S703, and the above processing is repeated.
[0084]
(7) Automatic performance silence process: Details of the automatic performance silence process performed in step S702 of the automatic performance process routine will be described with reference to the flowchart of FIG.
[0085]
In this automatic performance mute processing, interrupt processing is first prohibited (step S801), and all gate times (Gate [note]) that are currently sounded are subtracted by the value of the gate time counter (Gate_CNT) (step S801). S802).
[0086]
Then, the value of the gate time counter (Gate_CNT) is set to 0 (step S803), and then interrupt processing is permitted (step S804).
[0087]
Thereafter, note data having a gate time (Gate [note]) value of 0 or less is muted (step S805).
[0088]
(8) Concert magic tune progression processing: The concert magic tune progression processing of step S404 performed in the keyboard processing of FIG. 8 will be described with reference to the flowchart of FIG.
[0089]
In this concert magic song progression process, the automatic performance process flag set by the panel switch process is referred to and it is checked whether or not automatic performance is in progress (step S901). If automatic performance is in progress (step S901; Y), the sequence returns to step S405 of the keyboard processing routine.
[0090]
If automatic performance is not in progress (step S901; N), a concert magic mute process described later is performed (step S902).
[0091]
Then, the value of note-on data (note_on) is set to 0, and the value of the step variable (step) is set to 0xff (step S903).
[0092]
Thereafter, note data is read from the address indicated by the address register (R_ADD) (step S904), and it is checked whether the data is a data end mark (step S905). If it is a data end mark (step S905; Y), the concert magic process is terminated (step S906), and the sequence returns to step S405 of the keyboard process routine.
[0093]
If it is not a data end mark (step S905; N), it is checked whether the read data is a bar mark or a beat mark (step S907).
[0094]
If the read data is a bar mark or beat mark (step S907; Y), the value of the step variable (step) is set to 0xff (step S908), and the gate time counter (Gate_CNT) is set to 1. A value obtained by subtracting the count value of the step buffer (step_buf) from the beat value 96 is set (step S909). Then, the count value of the step buffer (step_buf) is set to 0 (step S910), the value of the address register (R_ADD) is incremented, and the value is stored (step S911). Thereafter, the process returns to step S904.
[0095]
If the read data is not a bar mark or a beat mark in step S907 (step S907; N), it is checked whether the read data is note-on data (step S912). If it is not note-on data (step S912; N), the value of the address register (R_ADD) is incremented and the value is stored (step S920). Thereafter, the process returns to step S904.
[0096]
On the other hand, if the read data is note-on data (step S912; Y), in order to determine whether the read data is note-on data constituting a chord, note-on data (note_on) It is checked whether or not the value is 0 (step S913), and it is first determined whether or not it is the first sound.
[0097]
If the value of note-on data (note_on) is 0 (step S913; Y), the value of note-on data (note_on) is 1 and the actual step time is the same as the step variable (step). Is set to the value of the step buffer (step_buf), and the value of the gate time counter (Gate_CNT) is set to 0 (step S914).
[0098]
Thereafter, the gate time defined in the note data as the automatic performance data is set to the gate time value (Gate [note]) of each note-on data (step S915), and sound generation processing is performed (step S916). Thereafter, the value of the address register (R_ADD) is incremented, the value is stored (step S917), and the process returns to step S904.
[0099]
If the value of note-on data (note_on) is not 0 in step S913 (step S913; N), the value of the step variable (step) is the step of the note data in order to determine whether the chord has the same step time. It is checked whether or not it matches the time (step S918).
[0100]
If the value of the step variable (step) coincides with the step time (step S918; Y), the process proceeds to step S915. On the other hand, if they do not match (step S918; N), since it corresponds to a sound other than a chord, the value of the gate time counter (Gate_CNT) is set to the value of (step time−step_buf) (step S919), and the sequence Returns to step S405 of the keyboard processing routine.
[0101]
(9) Concert magic muting process: The concert magic muting process of step S902 performed in the concert magic music progression process of FIG. 13 will be described with reference to the flowchart of FIG.
[0102]
In this concert magic muting process, the gate time (Gate [note]) of all note data currently being sounded is subtracted by the value of the gate time counter (Gate_CNT) (step S1001).
[0103]
Then, note data whose gate time (Gate [note]) is 0 or less is muted (step S1002).
[0104]
(10) Help switch-on event processing: The help switch-on event processing shown in step S503 of FIG. 9 will be described with reference to FIG.
[0105]
It is checked whether or not there is a help switch on event from the on event map created as described above (step S1101). If there is no on event (step S1101; N), the sequence returns to step S504.
[0106]
On the contrary, if there is a help switch-on event (step S1101; Y), the CM flag is referred to and it is checked whether or not the concert magic is currently being performed (step S1102). If it is not currently in concert magic (step S1102; N), the sequence returns to step S504. If the concert magic is currently being performed (step S1102; Y), it is checked whether or not automatic performance is being performed (step S1103). If the automatic performance is being performed (step S1103; Y), the sequence returns to step S504.
[0107]
On the other hand, if the automatic performance is not in progress (step S1103; N), the following processing is performed by the reverse key pressing standby unit 10b of the above-described configuration of the present invention.
[0108]
First, all the currently sounding sounds are muted (step S1104). Thereafter, the bar counter (Bar_CNT), the gate time counter (Gate_CNT), the step buffer (step_buf), and the gate time (Gate [Note]) of the currently executed note data are all set to 0 (step S1105).
[0109]
It is checked whether the address indicated by the currently read address register (R_ADD) is greater than the top address (SongTopAdd) of the song (step S1106). If it is not larger than the head address (SongTopAdd) of the song (step S1106; N), the sequence returns to step S504.
[0110]
On the contrary, if it is larger than the head address (SongTopAdd) of the song (step S1106; Y), the address indicated by the address register (R_ADD) is subtracted (step S1107).
[0111]
The data indicated by the address in the address register (R_ADD) is used to determine whether the subtracted result hits the first bar of the currently playing bar (the first bar of bar 4 in the example of FIG. 4). Is checked (step S1108). If the data indicated by the address in the address register (R_ADD) is not a bar (the previous performance sound or accompaniment sound in the example shown in FIG. 4) (step S1108; N), the process returns to step S1106 to return to the beginning of the currently playing measure. The above process is repeated until a bar arrives.
[0112]
On the contrary, if the data indicated by the address of the address register (R_ADD) is a bar (step S1108; Y), the bar counter (Bar_CNT) is incremented (step S1109), and whether the bar counter (Bar_CNT) is 1 or not. Is checked (step S1110).
[0113]
If the bar counter (Bar_CNT) is 1 (step S1110; Y), the value of the address register (R_ADD) is set to the stop address value (STOP_ADD) (step S1111), and automatically in steps S710 and S711 of FIG. The performance is set so that the performance is stopped and put into a standby state, and the process returns to step S1106, and the above processing is repeated, so that the bar 1 bar before (further 3 in the example of FIG. 4). To the first bar).
[0114]
In the meantime, since the bar counter (Bar_CNT) has become larger than 1 by the increment of step S1109, in step S1110, since the bar counter (Bar_CNT) is not 1 (step S1110; N), an automatic performance state is set ( In step S1012), the sequence returns to step S504. As described above, this automatic performance is performed at the top bar of the bar where the help switch (HELP SW) is pressed in step S710 and step S711 of FIG. 11 (in the example of FIG. 4, the top bar of bar 4). Then, the performance is stopped and a standby state is entered.
[0115]
It should be noted that the LCD screen 300 may be displayed so that it can be seen that it has stopped, for example, by placing a pointer at the head of measure 4 in FIG.
[0116]
In this way, when the help switch (HELP SW) is pressed during the progress of the concert magic song, the player returns to the previous bar of the currently playing bar, and automatically plays in one bar from there. Since it is waiting for a key-on event at the beginning of the next measure, the player can quickly confirm how far he has returned by listening to the automatic performance sound. Key timing can also be performed more appropriately.
[0117]
The automatic performance device of the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the scope of the present invention.
[0118]
【The invention's effect】
As described above in detail, according to the present invention, even if the performer mistakenly advances the automatic performance in the middle of the song, the instruction is given by the instruction means. The automatic performance means according to the automatic performance data is performed according to the automatic performance data without detecting the key depression until a predetermined position, and when the automatic performance proceeds to the position, Since it is set in a state to wait for detection, the player can check how far it has returned in the karaoke performance state, and the timing of the next key press can be performed more appropriately, so it is easy to use Thus, an automatic performance apparatus and an automatic performance method can be provided.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an electronic musical instrument to which an automatic performance device according to an embodiment of the present invention is applied.
2 is a schematic plan view showing a configuration of an operation panel 101. FIG.
FIG. 3 is a block diagram showing functional blocks in the configuration of an embodiment of the present invention.
FIG. 4 is an explanatory diagram showing a state when the configuration of the present embodiment is applied to performance by concert magic of actual automatic performance data.
FIG. 5 is a flowchart showing main processing of the electronic musical instrument.
FIG. 6 is a flowchart showing timer interrupt processing every 2 msec.
FIG. 7 is a flowchart showing an automatic performance clock interrupt process.
FIG. 8 is a flowchart showing keyboard processing.
FIG. 9 is a flowchart showing a panel switch process.
FIG. 10 is a flowchart showing concert magic switch-on event processing.
FIG. 11 is a flowchart showing an automatic performance process.
FIG. 12 is a flowchart showing automatic performance mute processing.
FIG. 13 is a flowchart showing concert magic song progression processing.
FIG. 14 is a flowchart showing concert magic mute processing.
FIG. 15 is a flowchart showing help switch-on event processing;
FIG. 16 is an explanatory diagram illustrating a format of note data.
[Explanation of symbols]
10 CPU
10a Automatic performance section
10b Reverse key press standby section
11 Program memory
12 Work memory
13 Automatic performance data memory
14 Keyboard scan circuit
15 Musical sound generation circuit
16 timer
20 System bus
101 Operation panel
102 External interface circuit
141 Keyboard device
151 Key & Tone Assigner
152 amplifier
153 Speaker
200 CM switch
201 Help switch
202 song button
300 LCD screen

Claims (4)

Storage means for storing automatic performance data comprising a plurality of note data;
A key press detecting means for detecting that a key was pressed;
Each time it is detected by the key pressing detection means that the key is pressed, the note data is read from the storage means, and sound is generated based on the read note data, so that automatic performance is advanced. Playing means,
An instruction means for giving instructions while the automatic performance is in progress;
In response to an instruction from the instruction means, the progress of the automatic performance is returned, and the automatic performance means according to the automatic performance data is performed according to the automatic performance data without detecting the key press until a predetermined position, An automatic performance apparatus comprising reverse key-waiting waiting means for waiting for detection of a key depression when the automatic performance has progressed to the point. When the instruction by the instruction means is given, the reverse key pressing waiting means returns the progress of the automatic performance to an arbitrary number of measures before the measure that has been played, and the automatic performance means automatically The automatic performance according to the performance data is performed, the progress of the automatic performance is stopped before the measure that was being performed, and a standby state for detecting the next key press is set. Automatic performance device. An automatic performance method for storing automatic performance data composed of a plurality of note data, reading the stored note data every time a key depression is detected, generating a sound based on the note data, and advancing the automatic performance. When a predetermined instruction is given during the automatic performance that proceeds every time the key is detected, the automatic performance is returned in accordance with the instruction, and the automatic performance is not detected until the predetermined position is detected. An automatic performance method characterized in that an automatic performance is performed in accordance with performance data, and a state of waiting for key press detection is made when automatic performance progresses to the position. When an instruction is given by the performer, the progress of the automatic performance is returned to an arbitrary number of measures before the measure that was being played, and the automatic performance is performed according to the automatic performance data. 4. The automatic performance method according to claim 3, wherein the advancement of the automatic performance is stopped in front of the measure that is, and a standby state for detecting the next key depression is set.

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