JP2008122841A - Automatic accompaniment generating apparatus and program for achieving automatic accompaniment generating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To free the hands of the user from the operator manipulation for the automatic accompaniment during generating automatic accompaniment data while controlling start/stoppage of automatic accompaniment data generation as it is aimed by a user. <P>SOLUTION: When the key pressing sounds "C3", "E3" and "G3" are input at time t0 after selection of automatic accompaniment pattern data and command of start of the production of the automatic accompaniment data, the generation of automatic accompaniment data is started from the note of the key pressing sounds and the sound production pattern data included in the selected automatic accompaniment pattern data. Even without the input of the keyboard pressing sounds at time t1, the generation of the automatic accompaniment data is continued. Further, in the case where the keyboard is released immediately after newly pressing a keyboard at time t2, the generation of the automatic accompaniment data is stopped. Thereafter, in the case where the user newly presses keyboards (for example, "C3", "E3" and "G3") at time t3, the generation of the automatic accompaniment data is resumed from the not of the pressed keyboard sounds and the sound production pattern data. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an automatic accompaniment generating apparatus and a program for realizing an automatic accompaniment generating method for generating automatic accompaniment data based on supplied automatic accompaniment pattern data and inputted performance sound.

  2. Description of the Related Art Conventionally, an automatic accompaniment generating apparatus that generates automatic accompaniment data based on supplied automatic accompaniment pattern data and input performance sound has been known.

  As such an automatic accompaniment device, for example, automatic accompaniment pattern data is stored in association with each accompaniment style, and when a user selects one accompaniment style, automatic accompaniment pattern data corresponding to the accompaniment style is read. In some cases, automatic accompaniment data is generated by converting the read automatic accompaniment pattern data so as to match a chord input by a user using a keyboard or the like. Here, the automatic accompaniment pattern data is a set of pitch data and timing data corresponding to each accompaniment sound, and automatic accompaniment data generation using this automatic accompaniment pattern data is, for example, an automatic accompaniment pattern After converting the pitch in the data according to a predetermined rule, the entire pitch after the conversion is shifted according to the root of the input chord. As a result, automatic accompaniment data having a pitch that matches the input chord is generated (see, for example, Patent Document 1).

On the other hand, there is a so-called arpeggiator that generates an arpeggio (dispersed chord) in response to a key press. The arpeggiator stores arpeggio pattern data consisting of multiple key numbers (simple numbers rather than note numbers corresponding to pitches) and their sounding timings, and the predetermined rules for the pitches of multiple pressed keys Numbers are assigned according to the order of the pitches (for example, in order of increasing pitches), and pitches that are assigned numbers corresponding to the key numbers in the arpeggio pattern data are generated at the time of their pronunciation, and arpeggios are generated based on the key press sounds. Is generated. There is also a type that generates arpeggio using arpeggio pattern data of a type (fixed note) in which a fixed pitch is specified in a part of the pattern (for example, see Patent Document 2).
Japanese Patent No. 3319390 JP 2001-22354 A

  However, in the above-described conventional automatic accompaniment device, automatic accompaniment data is generated while the user presses the sound of the pitch that is the basis for generating automatic accompaniment data, and generation of automatic accompaniment data stops when the key is released Therefore, at least one hand is occupied by the key depression for the automatic accompaniment while the automatic accompaniment sound is generated.

  In addition, the conventional arpeggiator has a hold function in which the arpeggio generation continues even if the user performs the key release for generating the arpeggio and then releases the key, and this hold function is effective. Once the user presses the key for generating the arpeggio even once, the arpeggio generation is not interrupted even if the user releases the key unless the hold function is disabled (FIG. 4 (described later)). b)). Therefore, in this case, the musical sound generated according to the arpeggio generation remains in a state of being played.

  The present invention has been made paying attention to this point. While controlling the start / stop of automatic accompaniment data generation as desired by the user, the user's hands are operated for automatic accompaniment during the generation of automatic accompaniment data. It is an object of the present invention to provide a program for realizing an automatic accompaniment generating apparatus and an automatic accompaniment generating method that can be released from a child operation.

  In order to achieve the above object, an automatic accompaniment generator according to claim 1 is provided with a supply means for supplying automatic accompaniment pattern data, an input means for inputting performance sounds, a performance sound input by the input means, and the Based on the automatic accompaniment pattern data supplied by the supply means, a generation means for generating automatic accompaniment data, and when the performance sound is input by the input means, the input is under what performance sound input status. A determination means for determining whether or not the input is performed, a determination means for determining whether or not to stop generation of automatic accompaniment data by the generation means, based on a determination result by the determination means, and the determination means, Control means for controlling the generation means to stop the generation of the automatic accompaniment data when it is determined to stop the generation of the automatic accompaniment data. The features.

  The automatic accompaniment generation device according to claim 2 is the automatic accompaniment generation device according to claim 1, wherein the discriminating means generates a new performance while automatic accompaniment data is being generated and no performance sound is input. When it is determined that a sound has been input, the determining means determines to stop generating the automatic accompaniment data.

  The automatic accompaniment generation device according to claim 3 is the automatic accompaniment generation device according to claim 2, wherein the determination means determines that a new performance sound has been input while generation of automatic accompaniment data is stopped. The control means controls the generation means so as to start generation of automatic accompaniment data.

  In order to achieve the above object, the program according to claim 4 can be realized by the same technical idea as claim 1.

  According to the first or fourth aspect of the present invention, when the performance sound is input by the input means for inputting the performance sound, the input condition of the performance sound is the input of the performance sound. It is determined, and based on the determination result, it is determined whether or not to stop the generation of the automatic accompaniment data. When it is determined to stop the generation of the automatic accompaniment data, the generation of the automatic accompaniment data is stopped. The user can easily stop the generation of the automatic accompaniment data simply by inputting the performance sound from the input means without taking his eyes off the input means.

  According to the second aspect of the present invention, since automatic accompaniment data generation continues even if input of performance sound for generating automatic accompaniment data is stopped during generation of automatic accompaniment data, automatic accompaniment During data generation, both hands of the user can be released from the operation of the operator for automatic accompaniment.

  According to the third aspect of the present invention, when a new key is detected after the performance sound for generating the automatic accompaniment data is stopped during the generation of the automatic accompaniment data, When the generation of automatic accompaniment data is stopped and a new key press is detected, the generation of automatic accompaniment data is resumed, so that the start / stop of automatic accompaniment data generation can be controlled as desired by the user.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a schematic configuration of an automatic accompaniment generator according to an embodiment of the present invention.

  As shown in the figure, the automatic accompaniment generator according to the present embodiment includes an operator group 1 including performance operators such as a keyboard and setting operators such as various switches, and each operator of the operator group 1. A detection circuit 2 that detects an operation state, a CPU 3 that controls the entire apparatus, a ROM 4 that stores a control program executed by the CPU 3 and various table data, performance information input from the performance operator, and automatic accompaniment RAM 5 for temporarily storing pattern data, various input information, calculation results, etc., external storage device 6 for storing various application programs including the control program, various automatic accompaniment pattern data, various data, etc. For example, a display device 7 including a liquid crystal display (LCD) and a light emitting diode (LED), and an external MIDI (Musical Instr) a communication interface (I / F) 8 that connects an external device 100 such as a device digital interface) and transmits / receives data to / from the external device 100, performance sound input from the performance operator, and the RAM 5. A sound source circuit 9 for converting automatic accompaniment data generated based on the automatic accompaniment pattern data into a musical sound signal, an effect circuit 10 for imparting various effects to the musical sound signal from the sound source circuit 9, and the effect circuit 10 For example, a sound system 11 such as a DAC (Digital-to-Analog Converter), an amplifier, and a speaker.

  The above components 2 to 10 are connected to each other via the bus 12, the external device 100 is connected to the communication I / F 8, the effect circuit 10 is connected to the sound source circuit 9, and the sound system is connected to the effect circuit 10. 11 is connected.

  Examples of the external storage device 6 include a flexible disk drive (FDD), a hard disk drive (HDD), a CD-ROM drive, and a magneto-optical disk (MO) drive. As described above, the external storage device 6 can also store a control program to be executed by the CPU 3. If the control program is not stored in the ROM 4, the control program is stored in the external storage device 6. By reading it into the RAM 5, it is possible to cause the CPU 3 to perform the same operation as when the control program is stored in the ROM 4. In this way, control programs can be easily added and upgraded.

  In the illustrated example, the external device 100 is connected to the communication I / F 8. However, the present invention is not limited to this, and a server computer is connected via a communication network such as a LAN (Local Area Network), the Internet, or a telephone line. You may be made to do. In this case, if the above programs and various parameters are not stored in the external storage device 6, the communication I / F 8 is used for downloading the programs and parameters from the server computer. The automatic accompaniment generating apparatus serving as a client transmits a command for requesting downloading of a program and parameters to the server computer via the communication I / F 8 and the communication network. Upon receiving this command, the server computer distributes the requested program and parameters to the automatic accompaniment generator via the communication network, and the automatic accompaniment generator receives these programs and parameters via the communication I / F 8. Then, the download is completed by accumulating in the external storage device 6.

  Note that the automatic accompaniment generator according to the present embodiment is constructed on an electronic keyboard instrument, as can be seen from the above configuration, but is not limited to this, and on a general-purpose personal computer with a keyboard externally connected. You may build it. Further, the present invention is not limited to the keyboard instrument embodiment, and other embodiments such as a string instrument type, a wind instrument type, and a percussion instrument type may be used.

  The control process executed by the automatic accompaniment generator configured as described above will be described first with reference to FIGS. 2 to 4 and then in detail with reference to FIG.

The automatic accompaniment generating apparatus of this embodiment is mainly based on (A) performance information (pitch in this embodiment) input by the user's key pressing operation and automatic accompaniment pattern data selected by the user. Automatic accompaniment data generation processing for generating accompaniment data (B) Automatic accompaniment data generation start / stop processing for starting or stopping the automatic accompaniment data generation processing of (A) is performed in response to the user's key pressing operation.

  FIG. 2 is a block diagram showing a control configuration of the automatic accompaniment data generation process of (A), and FIG. 3 shows an example of the format of the pronunciation pattern data included in the automatic accompaniment pattern data, the pronunciation pattern data and the user It is a figure which shows the pronunciation data list produced | generated based on the pitch of the key pressing sound input by the key pressing operation.

  A plurality of types of automatic accompaniment pattern data are stored in advance in the external storage device 6, for example, and when the user selects one of them, the selected automatic accompaniment pattern data is read from the external storage device 6, It is stored in an automatic accompaniment pattern data storage area (not shown) secured at a predetermined position in the RAM 5. FIG. 2 shows a state in which automatic accompaniment data is generated based on automatic accompaniment pattern data N selected by the user from the automatic accompaniment pattern data group.

  Each automatic accompaniment pattern data includes pronunciation pattern data. As shown in FIG. 3, the sound generation pattern data is composed of a plurality of sets of data in which the sound generation timing (Timing), the gate time (Gate), the key number (Key), the octave (Oct), and the velocity (Vel) are set as one set of data. It is configured. Here, the sound generation timing is the timing at which the keying sound of the corresponding key number (that is, belonging to the same group) is generated by the number of clocks. In this embodiment, the time for one beat is 480 clocks. It is represented by The gate time represents the duration of sound generation (ie, the sound length) of the key-pressing sound that has been sounded at the sounding timing in terms of the number of clocks. The key number is determined when the user simultaneously presses a plurality of keys (the key press start timing may be simultaneous or may be shifted, in other words, there may be a period during which a plurality of keys are pressed simultaneously. ) Are numbered in ascending order of pitch. The octave indicates how much the keypad sound of the corresponding key number is shifted by an octave. The velocity indicates the value of velocity when the corresponding key number is pressed.

FIG. 3 shows a pronunciation data list generated using the pronunciation pattern data when three pitches “C3”, “E3”, and “G3” are simultaneously input by the user's key depression. According to the above rules, the key pressing sounds “C3”, “E3” and “G3” are given key numbers “1”, “2” and “3”, so the head of the pronunciation data list (“0000”) A note number (Note) of half a beat (from “0719”) is generated as follows. That is,
Timing “0000”: C4 (the pitch of the key pressing sound with the key number “1” (“C3”) shifted by “1” octave)
Timing “0240”: G3 (the pitch (“G3”) of the key pressing sound with the key number “3” shifted by “0” octave)
Timing “0480”: E3 (the pitch (“E3”) of the key-pressing sound with the key number “2” shifted by “0” octave)
Note numbers of other timings of other beats are generated in the same manner.

  In this embodiment, the pronunciation pattern data is one bar length (4/4 time in the example of FIG. 3), but the generation of the pronunciation data list is instructed by the user to stop. Since it does not stop until there is, the pronunciation data list is generated beyond one measure. When the generation of the pronunciation data list exceeds one measure without changing the key-press sound, the note numbers generated at the first measure are repeatedly generated as the note numbers after the second measure. Here, it is needless to say that the pronunciation pattern data may have any length, and is not limited to the one bar length.

  FIG. 4 is a diagram for explaining the automatic accompaniment data generation start / stop process (B). For convenience of explanation, FIG. 4 shows the control by the automatic accompaniment data generation process of the conventional automatic accompaniment generation apparatus. Examples are also given. Specifically, FIG. 4A shows an example of control by this (B) automatic accompaniment data generation start / stop process, and FIG. 4B shows a key depression similar to the control example of FIG. The example of control by the conventional automatic accompaniment production | generation apparatus when operation is made is shown.

  As described above, the (B) automatic accompaniment data generation start / stop process is a process for starting or stopping the (A) automatic accompaniment data generation process. It is determined whether or not the key is pressed and released under various circumstances, and (A) automatic accompaniment data generation processing is controlled based on the determination result. That is, (B) automatic accompaniment data generation start / stop processing mainly defines processing at the time when the user presses and releases a key (in FIG. 4, each time point in time t0 to t6 and its vicinity).

  As shown in FIG. 4 (a), after shifting to the automatic accompaniment data generation mode, automatic accompaniment pattern data is selected and an instruction to start generation of automatic accompaniment data is given. When "," "E3" and "G3" are input, the CPU 3 causes the automatic accompaniment data (pronunciation data list) based on the pitch of the key depression sound and the pronunciation pattern data included in the selected automatic accompaniment pattern data. ) Generation. Next, at time t1, even if the key depression sounds “C3”, “E3” and “G3” are no longer input, the CPU 3 continues to generate the automatic accompaniment data.

  Next, at time t2, if the user releases the key immediately after performing a new key press (for example, “C3”), the CPU 3 stops the generation of the automatic accompaniment data. Thereafter, when the user performs a new key depression (for example, “C3”, “E3”, and “G3”) at time t3, the CPU 3 performs automatic accompaniment based on the pitch of the key depression sound and the pronunciation pattern data. The data generation is resumed, and at time t4, the user changes the key press to, for example, the keys of “C3”, “F3”, and “A3” (that is, “E3” and “G3” are released, Immediately after that, when “F3” and “A3” are pressed, the CPU 3 changes to automatic accompaniment data generation based on the pitch of this key pressing sound, and at time t5, the key pressing sound “C3”, Even if “F3” and “A3” are no longer input, the generation of the automatic accompaniment data is continued. If the user releases the key immediately after the user performs a new key depression (for example, “C3”) at time t6, the CPU 3 stops the generation of the automatic accompaniment data.

  On the other hand, in the conventional automatic accompaniment generator, as shown in FIG. 4B, after the user performs a new key press ("C3") at time t2 or t6, the key release is immediately performed. If it is performed, the automatic accompaniment data is generated based on the pitch of the key depression sound, and the automatic accompaniment data generation is not stopped.

  As described above, in the automatic accompaniment generation apparatus according to the present embodiment, the user can easily control the start / stop of automatic accompaniment data generation by simply pressing and releasing the keyboard without taking his eyes off the keyboard. In addition, even if the key for generating the automatic accompaniment data is stopped during the generation of the automatic accompaniment data (the key is released), the generation of the automatic accompaniment data continues, so during the generation of the automatic accompaniment data, Both hands of the user can be released from the operator operation for automatic accompaniment. After that, generation of the automatic accompaniment data is stopped when a new key is detected, and automatic accompaniment data generation is resumed when a new key is detected. The start / stop of data generation can be controlled as desired by the user.

  Next, this control process will be described in detail.

  FIG. 5 is a flowchart showing a procedure of an automatic accompaniment data generation control process executed by the automatic accompaniment generation apparatus of the present embodiment, particularly the CPU 3. The automatic accompaniment data generation control process is activated when the user selects the automatic accompaniment data generation mode.

In this automatic accompaniment data generation control process,
(1) Initialization process (steps S1 to S3)
(2) (B) Automatic accompaniment data generation start / stop processing (steps S5 to S23)
(3) Completion processing of automatic accompaniment data generation control processing (step S4)
Each process is performed.

  In the initialization process (1), first, the CPU 3 presents a list of automatic accompaniment pattern data groups stored in the external storage device 6 to the user by, for example, displaying the list on the display device 7. When one of the automatic accompaniment pattern data is selected, the selected automatic accompaniment pattern data is read from the external storage device 6 into the automatic accompaniment pattern data storage area of the RAM 5 (step S1). Next, the CPU 3 clears a key-on buffer (not shown) secured at a predetermined position in the RAM 5 in order to store the pitch (key code) of the key pressing sound (step S2). A stop flag is set, which is set ("1") when an automatic accompaniment data generation stop is instructed by the user's key depression, and is reset ("0") when the key depression is released. (Step S3).

In the automatic accompaniment data generation start / stop process of (2), the CPU 3 detects the user's key release operation, and based on the operation status of the automatic accompaniment generation device at the time of detection, the automatic accompaniment is performed as follows. Control the start or stop of data. That is,
(21) When key pressing operation is performed while generation of automatic accompaniment data is stopped: generation of automatic accompaniment data is started. (22) Key release operation for all key pressing keys during generation of automatic accompaniment data. (When one or more keys that were being pressed were released almost simultaneously): No action (23) During automatic accompaniment data generation, there was a key release operation for part of the key pressed Case: Generation of automatic accompaniment data is started according to the contents of the changed key-on buffer (24) When the key-on buffer is empty and a key depression operation is performed during the generation of automatic accompaniment data: Generation is stopped The case (21) corresponds to the state at time t0 or time t3 in FIG. At this time, the key depression operation is detected, automatic accompaniment data is not generated, and the stop flag is in the reset (“0”) state, so the CPU 3 writes the pitch of the key depression sound in the key-on buffer ( Along with steps S5 → S6 → S7 → S8, generation of automatic accompaniment data is started based on the contents of the key-on buffer (step S9). For example, the automatic accompaniment pattern data including the pronunciation pattern data of FIG. 3 is read by the process of step S1, and the pitches of “C3”, “E3” and “G3” are changed to the key-on buffer by the user's key pressing operation. In step S9, the CPU 3 sets an automatic accompaniment data generation flag which is provided at a predetermined position in the RAM 5 and is set during generation of automatic accompaniment data and reset while the automatic accompaniment data is stopped. To do. In the present embodiment, the actual automatic accompaniment data generation process, that is, the (A) automatic accompaniment data generation process is performed in a timer interrupt process (not shown). In the timer interrupt process, the state of the automatic accompaniment data generation flag is constantly checked. When the automatic accompaniment data generation flag is set, the automatic accompaniment data generation process described with reference to FIG. 3 is performed. Nothing is done when the automatic accompaniment data generation flag is in the reset state. However, in this embodiment, when automatic accompaniment data is generated, that is, when a pronunciation data list is generated, not only the generated note number is registered in the pronunciation data list but also corresponding to the note number. A key-on event is also generated and supplied to the tone generator circuit 9 to generate a musical sound corresponding to the note number. Note that the key-on event generation process and the generated key-on event supply process to the tone generator circuit 9 may be performed immediately after the automatic accompaniment data generation process in the timer interrupt process. In this case, when the generation of the automatic accompaniment data is stopped, it is necessary to perform a process of muting the musical sound being generated. For example, a process for detecting when the automatic accompaniment data generation flag changes from the set state to the reset state is added to the timer interrupt process, and when the change time is detected, the mute process is performed. do it. Here, the mute process is specifically a process of generating a key-off event for a musical sound that is currently being generated and supplying it to the tone generator circuit 9.

  The case (22) corresponds to the state at time t1 or time t5 in FIG. At this time, the key release operation is detected, and automatic accompaniment data is being generated. Therefore, the CPU 3 deletes the pitch of the key release sound from the key-on buffer (steps S16 → S17 → S18). Here, since the key release is performed for all the key pressing sounds, the CPU 3 eventually empties the key-on buffer. Since the key-on buffer becomes empty in this way, the CPU 3 returns the process from step S19 to step S4. That is, the CPU 3 does not perform substantial control related to the generation of automatic accompaniment data (in this embodiment, the automatic accompaniment data generation flag is reset). A) It will be continued by automatic accompaniment data generation processing.

  The case (23) corresponds to a part of the state at time t4 in FIG. At this time, a key release operation is first detected and automatic accompaniment data is being generated, so the CPU 3 deletes the pitch of the key release sound from the key-on buffer (steps S16 → S17 → S18). Here, since the key release is performed for a part of the key pressing sound, the CPU 3 continues to generate automatic accompaniment data based on the changed contents of the key-on buffer (step S20). The processing so far is processing corresponding to the case of (23). The state at time t4 is that two of the three key pressing sounds “C3”, “E3”, and “G3” are released and then two new keys “F3” and “A3” are newly released. Since the sound is shown depressed, the CPU 3 performs the following process in addition to the above process corresponding to the case of (23) when trying to control the state at time t4. That is, the CPU 3 proceeds with the process from step S20 → S4 → S5 → S6 → S10 → S11, and additionally writes the pitches “F3” and “A3” of the new key pressing sound to the key-on buffer (step S11). Generation of automatic accompaniment data is continued based on the changed contents of the key-on buffer (step S12). In the state at this time t4, since the time from the release of the two subsequent sounds to the key depression is short, the process reaches step S12 soon before the process of step S20 is executed. That is, the automatic accompaniment data is not generated based on the key-on buffer storing only “C3”, but immediately after the automatic accompaniment data is generated based on the key-on buffer storing “C3”, “E3”, and “G3”. , The process proceeds to generation of automatic accompaniment data based on the key-on buffer in which “C3”, “F3”, and “A3” are stored.

  The case (24) corresponds to the state at time t2 or time t6 in FIG. At this time, a key depression operation is first detected and automatic accompaniment data is being generated, and the key-on buffer is empty. Therefore, the CPU 3 resets the automatic accompaniment data generation flag to generate automatic accompaniment data. Stop (steps S5 → S6 → S10 → S13), write the pitch of the key depression sound (“C3” in FIG. 4A) into the key-on buffer (step S14), and set the stop flag (“1”). (Step S15). Next, the key release operation is detected, the generation of automatic accompaniment data is stopped, and the stop flag is set. Therefore, the CPU 3 cancels the pitch of the key release sound from the key-on buffer ("C3" in FIG. 4A). ”) Is deleted (steps S16 → S17 → S21 → S22), and the stop flag is reset (step S23). The key pressing operation at time t2 and time t6 is performed using one key, but using a plurality of keys without pressing all of them simultaneously, for example, pressing a part of them. The key pressing operation may be performed by pressing the remaining key while pressing the key, releasing the key while pressing a part, and then releasing the key. In this case, the generation of automatic accompaniment data stops when a part of the keys is depressed for the first time (step S13). Then, although the pitch of the key depression sound is written in the key-on buffer (step S14), the stop flag is set (step S15), so even if the remaining key is depressed, the determination process in step S7 The processes of S8 and S9 are skipped and the process proceeds to step S16. That is, the contents of the key-on buffer are not rewritten, and the generation of the stopped automatic accompaniment data is not resumed. Thereafter, when the key is released from the pitch stored in the key-on buffer, the CPU 3 empties the key-on buffer (step S22) and resets the stop flag (step S23). As described above, the automatic accompaniment data generation control process can cope with the case where a plurality of keys are used and not all keys are pressed and released simultaneously.

  Note that the determination processing in steps S6 and S17, that is, the determination processing whether or not automatic accompaniment data is being generated is the key-on event corresponding to the note number registered in the pronunciation data list or whether the pronunciation data list is being generated. Whether the automatic accompaniment data is being supplied to the tone generator circuit 9 or the like, or by checking the state of the automatic accompaniment data generation flag, You may make it discriminate | determine indirectly.

  In the termination process of the automatic accompaniment data generation control process (3), the CPU 3 causes the user to perform a termination operation (for example, an operation for changing the automatic accompaniment data generation mode to another mode by operating a mode switch (not shown)). Is always checked (step S4), and when the user performs an end operation, the CPU 3 ends the automatic accompaniment data generation control process (step S4 → end).

  In the present embodiment, since the arpeggio pattern data is taken as an example of the automatic accompaniment pattern data, the automatic accompaniment data generated by using the arpeggio pattern data is actually arpeggio data. Is not the type of automatic accompaniment data generated. The reason for this is to simplify the explanation, and the present invention can be applied to generation of automatic accompaniment data of the type generated by the conventional automatic accompaniment device as well as generation of arpeggio data.

  In this embodiment, (A) the automatic accompaniment data generation process is performed during the timer interrupt process. However, the present invention is not limited to this, and it may be performed during the automatic accompaniment data generation control process of FIG. .

  Furthermore, in the present embodiment, the automatic accompaniment data generation control process of FIG. 5 is executed, so that the control process as shown in FIG. 4A is executed regardless of the user's intention. Not limited to this, the control process shown in FIG. 4A and the conventional control process shown in FIG. 4B can be freely selected by the user, and the control process selected by the user is executed. May be.

  In the present embodiment, any key pressing / releasing operation on the keyboard can be applied to the automatic accompaniment data generation control processing. However, the keyboard is divided into a plurality of key areas, and the divided key areas are divided into a plurality of key areas. The application may be limited only to the key pressing operation for keys in a part of the key range.

  Furthermore, a key for stopping the generation of automatic accompaniment data may be fixedly determined as a predetermined key in the keyboard (for example, the key at the end of the keyboard). In this case, when the predetermined key is pressed, generation of the automatic accompaniment data being generated is stopped. Subsequent resumption of generation of automatic accompaniment data may start with automatic accompaniment data generated based on the pitch of the key depression sound immediately before the stop, or based on the pitch of the key depression sound that triggered the resumption. You may make it start with the automatic accompaniment data produced | generated in this way. The predetermined key is preferably configured so that the user can freely change the position whose position is set in advance by factory setting or the like.

  In this embodiment, the pitch of the key depression sound for stopping the generation of the automatic accompaniment data is close to the pitch of the key depression sound based on the automatic accompaniment data (the former pitch is “C3 ”, But the latter pitch is“ C3 ”,“ E3 ”and“ G3 ”). However, the present invention is not limited to this, and as a key pressing sound for stopping the generation of automatic accompaniment data, You may use the thing of the pitch which is unrelated to the keystroke sound which becomes the basis of accompaniment data.

  In this embodiment, a plurality of types of automatic accompaniment pattern data are stored in advance in the external storage device 6. However, the present invention is not limited to this, and a plurality of types of automatic accompaniment pattern data may be stored in the ROM 4 in advance. What is above may be acquired via the communication I / F 8.

  A program in which a storage medium that records a program code of software that realizes the functions of the above-described embodiments is supplied to a system or apparatus, and a computer (or CPU or MPU) of the system or apparatus is stored in the storage medium. It goes without saying that the object of the present invention can also be achieved by reading and executing the code.

  In this case, the program code itself read from the storage medium realizes the novel function of the present invention, and the program code and the storage medium storing the program code constitute the present invention.

  As a storage medium for supplying the program code, for example, a flexible disk, hard disk, magneto-optical disk, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW, magnetic A tape, a non-volatile memory card, a ROM, or the like can be used. Further, the program code may be supplied from a server computer via a communication network.

  Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also the OS running on the computer based on the instruction of the program code performs the actual processing. It goes without saying that a case where the functions of the above-described embodiment are realized by performing part or all of the above and the processing thereof is included.

  Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.

It is a block diagram which shows schematic structure of the automatic accompaniment production | generation apparatus which concerns on one embodiment of this invention. It is a block diagram which shows the control structure of an automatic accompaniment data generation process. It is a figure which shows an example of the format of the pronunciation pattern data contained in automatic accompaniment pattern data, and the pronunciation data list produced | generated based on the pitch pattern data and the pitch of the keystroke sound input by the user's keystroke operation. It is a figure for demonstrating automatic accompaniment data generation start / stop processing. It is a flowchart which shows the procedure of the automatic accompaniment production | generation apparatus of FIG. 1, especially the automatic accompaniment data production | generation control processing which CPU performs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Operator group (input means), 3 ... CPU (supply means, production | generation means, discrimination means, determination means, control means), 4 ... ROM (supply means), 6 ... External storage device (supply means), 8 ... Communication I / F (supply means)

Claims (4)

Supply means for supplying automatic accompaniment pattern data;
Input means for inputting performance sound;
Generating means for generating automatic accompaniment data based on the performance sound input by the input means and the automatic accompaniment pattern data supplied by the supply means;
Discriminating means for discriminating under what input condition of the performance sound when the performance sound is input by the input means;
Determining means for determining whether or not to stop the generation of automatic accompaniment data by the generating means, based on the determination result by the determining means;
An automatic accompaniment generating apparatus, comprising: a control unit that controls the generation unit to stop the generation of the automatic accompaniment data when the determination unit determines to stop the generation of the automatic accompaniment data. .   When the determination means determines that a new performance sound has been input while the automatic accompaniment data is being generated and no performance sound has been input, the determination means determines that the automatic accompaniment data 2. The automatic accompaniment generating apparatus according to claim 1, wherein it is determined to stop generating data.   When it is determined by the determining means that a new performance sound has been input while the generation of automatic accompaniment data is stopped, the control means causes the generating means to start generating automatic accompaniment data. The automatic accompaniment generator according to claim 2, wherein the automatic accompaniment generator is controlled. A supply module for supplying automatic accompaniment pattern data;
A generating module for generating automatic accompaniment data based on the performance sound input by the input means for inputting the performance sound and the automatic accompaniment pattern data supplied by the supply module;
When a performance sound is input by the input means, a determination module for determining under what input state of the performance sound the input is,
A determination module for determining whether to stop the generation of automatic accompaniment data by the generation module, based on a determination result by the determination module;
A program for causing a computer to execute a control module that controls the generation module to stop generation of the automatic accompaniment data when the determination module determines to stop generation of the automatic accompaniment data.

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