JP2010243615A - Operation automatic execution system and electronic musical instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system which automatically executes an operation of an operation element without the need for manual operation. <P>SOLUTION: An electronic musical instrument 10 executes an event to a switch 12 or the like according to a message with reference to the message of MIDI data received by MIDI_I/F13. Also, the electronic musical instrument 10 operates at either operation mode of a normal operation mode that a musical sound is generated by a sound source 26 and an event execution mode that an event to a prescribed switch in the switch 12 is executed based on the MIDI data. At the event execution mode, a CPU 21 turns the prescribed switch into an on-state when the MIDI data are messages of a note-on event, and turns the prescribed switch into an off-state when the MIDI data are messages of a note-off event. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a system for automatically operating an electronic musical instrument and an electronic musical instrument in the system.

  Conventionally, specification tests in the process of product development and manufacturing of electronic musical instruments have been performed manually. That is, the operator operates the switches one by one to check the behavior of the electronic musical instrument, for example, whether the LED is turned on or off, or displayed on the display device screen. In addition, when a problem occurs in the specification test, it is necessary to confirm which operation sequence caused the problem. However, in the case of manual operation, it is difficult to reproduce the problem because the operation sequence is not remembered. In some cases. Moreover, as long as it is performed manually, a mistake may occur in the switch operation by the operator.

  In order to eliminate these manual errors and reduce manual operation, it is desirable to automatically execute the operation by some means.

  It is conceivable that a test tool for transmitting a control signal to the electronic musical instrument is attached to the personal computer, and necessary circuit elements are incorporated so that the electronic musical instrument performs a predetermined operation according to the control signal. However, in this case, it is necessary to incorporate a test-dedicated mechanism (interface or circuit) into the electronic musical instrument, which increases the circuit scale of the electronic musical instrument. Also, it is useless to incorporate circuit elements that are not necessary for normal operation.

  The same problem can occur in the specification test even in an electronic device having an operator other than an electronic musical instrument.

JP-A-10-39865

  For example, an electronic musical instrument can generate a predetermined musical tone or switch timbres by receiving a predefined message based on MIDI (Musical Instrument Digital Interface). Also, in Patent Document 1, when a predetermined MIDI data string is output by a key pressing operation of a specific pattern key on the keyboard, transposition in the karaoke performance and temporary performance are performed according to the key pressing operation pattern. A karaoke apparatus that can control stop or restart has been proposed.

  The present invention provides an operation execution system capable of automatically performing operation of an operator without requiring a special test tool on the output side of the control signal and without requiring manual operation on the reception side. The purpose is to do. It is another object of the present invention to provide an electronic musical instrument that can automatically perform operation of an operator even if it is not necessary to incorporate circuit elements that are normally unnecessary.

An object of the present invention is to provide an electronic device having a plurality of operators, a MIDI data reproducing device that sequentially outputs a plurality of MIDI data including messages based on MIDI according to a predetermined sequence to the electronic device, An automatic operation execution system equipped with
MIDI interface means for the electronic device to receive the MIDI data;
This is achieved by an automatic operation execution system comprising event execution means for referring to a message of MIDI data received by the MIDI interface and executing an event for a predetermined operator in accordance with the message.

In a preferred embodiment, the electronic device operates under any one of a normal operation mode in which the electronic device normally operates and an event execution mode in which an event for the predetermined operator is executed,
When the event execution means sets the operation mode to the event execution mode when the MIDI data is the first exclusive message indicating the start of the event execution mode, an event for the operator according to the message is sent. When the MIDI data is a second exclusive message indicating the end of the event execution mode, the operation mode is changed to the normal operation mode.

In a more preferred embodiment, the electronic device is an electronic musical instrument,
The event execution means turns on the predetermined operator when the MIDI data is a note-on event message, and the predetermined operation when the MIDI data is a note-off event message. Turn off the child.

In another preferred embodiment, a value in at least one of the channel of the note-on event message and the note number is associated with any one of a plurality of operators.
The event execution means refers to the value in the message of the note-on event, specifies an operator associated with the value, and turns the operator on.

  In another preferred embodiment, the MIDI data reproducing device is an SMF player that reads a standard MIDI file.

It is another object of the present invention to generate musical tone data having a predetermined pitch based on a note-on event message of MIDI data, and to generate musical tone data for muting the musical tone data based on a note-off event message. Means,
MIDI interface means for receiving the MIDI data;
Event execution means for referring to a message of MIDI data received by the MIDI interface and executing an event for a predetermined operator in accordance with the message;
Based on the MIDI data, the operation is performed under any one of a normal operation mode in which a musical sound is generated by the musical sound data generation means and an event execution mode in which an event for the predetermined operator is executed. Achieved by the featured electronic musical instrument.

  In a preferred embodiment, the event execution means turns on the predetermined operator when the MIDI data is a note-on event message under the event execution mode, and the MIDI data If the message is a note-off event message, the predetermined operator is turned off.

  According to the present invention, there is no need for a special test tool on the output side of the control signal, and there is no need for manual operation on the receiving side. Can be provided. In addition, according to the present invention, it is possible to provide an electronic musical instrument that can automatically perform operation of an operator even when it is not necessary to incorporate circuit elements that are not normally required.

FIG. 1 is a diagram showing an outline of an automatic operation execution system including an electronic musical instrument and a personal computer according to the present embodiment. FIG. 2 is a block diagram showing the configuration of the electronic musical instrument according to this embodiment. FIG. 3 is a diagram showing an example of MIDI data in the present embodiment. FIG. 4 is a diagram illustrating an example of the data structure of the SMF stored in the storage device of the PC. FIG. 5 is a flowchart showing an example of data transmission processing executed in the SMF player provided in the PC. FIG. 6 is a flowchart schematically showing an example of processing executed in the electronic musical instrument according to this embodiment. FIG. 7 is a flowchart showing an example of the MIDI processing according to the present embodiment. FIG. 8 is a flowchart showing an example of switch operation execution processing according to the present exemplary embodiment. FIG. 9 is a flowchart illustrating an example of switch operation execution processing according to the present embodiment. FIG. 10 is a flowchart showing an example of switch operation execution processing according to the present exemplary embodiment. FIG. 11 is a diagram showing an example of a correspondence table between switch numbers and switch names in the present embodiment. FIG. 12 is a flowchart showing an example of numeric keypad processing according to the present embodiment. FIG. 13 is a flowchart showing an example of keyboard processing according to the present embodiment. FIG. 14 is a flowchart showing an example of song processing according to the present embodiment. FIG. 15 is a flowchart showing an example of the sound generation process according to the present embodiment.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a diagram showing an outline of an automatic operation execution system including an electronic musical instrument and a personal computer according to the present embodiment. As shown in FIG. 1, an electronic musical instrument 10 according to the present embodiment has a keyboard 11 including a plurality of (for example, 61) keys 16-1, 16-2,. Also, on the upper part of the keyboard 11, a plurality of switches (for example, switch 17, numeric keypad 18 and the like) for designating tone color, creation of guide data, presence / absence of guide, and various information relating to the music to be played are displayed. For example, it has the display part 14 which displays a timbre, a rhythm pattern, a chord name, etc.

  In the present embodiment, the automatic operation execution system includes a personal computer (PC) 15. The PC 15 is provided with an SMF (standard MIDI file) player 31, and can read and reproduce the SMF 33 stored in the storage device 32. The PC 15 and the electronic musical instrument 10 are connected by a cable 34, and MIDI data based on the SMF read by the SMF player 31 of the PC 15 is given to the electronic musical instrument 10. The cable 34 may be a cable having a 5-pin DIN connector conforming to the MIDI standard, or a USB cable.

  FIG. 2 is a block diagram showing the configuration of the electronic musical instrument according to this embodiment. As shown in FIG. 2, the electronic musical instrument 10 according to the present embodiment includes a CPU 21, a ROM 22, a RAM 23, a sound system 24, a keyboard 11, a switch unit 12, a MIDI interface (I / F) 13, and a liquid crystal display device. The display part 14 which has is provided.

  The CPU 21 controls the electronic musical instrument 10 as a whole, detects keys pressed on the keys of the keyboard 11 (see, for example, reference numerals 16-1 and 16-2 in FIG. 1) and operation of switches constituting the switch unit 12, and detects keys and switches. Various processes such as control of the sound system 24 according to the operation are executed. In the present embodiment, the CPU 21 executes a process based on the MIDI data given from the PC 15. The processing based on the MIDI data will be described in detail later.

  The ROM 22 is a program for various processes to be executed by the CPU 21, such as on / off (key press) / off (key release) of keys on the keyboard, switch operation, tone generation according to key press, and processing based on MIDI data. Is stored. The ROM 22 has a waveform data area that stores waveform data for generating musical sounds such as piano, guitar, bass drum, snare drum, and cymbal, and a song that stores song data of musical sounds constituting an automatic accompaniment pattern. Has a data area. The RAM 23 stores a program read from the ROM 22 and data generated in the course of processing.

  The sound system 24 includes a sound source unit 26, an audio circuit 27, and a speaker 28. For example, when receiving a note-on event related to the depressed key from the CPU 21, the tone generator 26 reads predetermined waveform data from the waveform data area of the ROM 22, generates musical tone data of a predetermined pitch, and outputs it. The sound source unit 26 can also output waveform data, particularly waveform data of percussion instrument sounds such as a snare drum, bass drum, and cymbal, as musical sound data. The audio circuit 27 D / A converts and amplifies the musical sound data. Thereby, an acoustic signal is output from the speaker 28.

The electronic musical instrument 10 according to the present embodiment can generate a musical tone based on the key depression of the keyboard 11 under the normal mode. In the normal mode, when MIDI data is received via the MIDI I / F 13, an operation according to the MIDI data message, for example, data indicating a note-on, has a predetermined pitch. Musical tone data is generated and the musical tone is pronounced. If the data indicates note-off, a musical tone having a predetermined pitch is muted. On the other hand, in the present embodiment, the electronic musical instrument 10 may operate under the switch execution mode. In this switch execution mode, MIDI data can be used as a switch operation instruction of the electronic musical instrument 10 to turn on a predetermined switch. FIG. 3 is a diagram showing an example of MIDI data in the present embodiment. . In FIG. 3, the upper two (see reference numerals 301 and 302) are messages indicating normal note-on and note-off, respectively. For example, in MIDI data 301 indicating note-on, note-on (9 (H)) and channels 00 (H) to FF (H)) are specified by the first 1 byte (reference numeral 303), and the next 1-byte. Thus, the note number (pitch) is specified. The subsequent 1 byte indicates velocity. In MIDI data 302 indicating note-off, note-on (8 (H)) and channels (00 (H) to FF (H)) are specified by the first 1 byte (reference numeral 303), and the next 1 The note number (pitch) is specified by the byte. The subsequent 1 byte indicates velocity.

  In the present embodiment, when the electronic musical instrument 10 accepts MIDI data indicated by reference numeral 311 under a switch execution mode described later, the electronic musical instrument 10 turns on a predetermined switch. Therefore, the MIDI data 311 is a message indicating switch-on. The MIDI data 311 basically has a configuration similar to the MIDI data 301 indicating note-on. That is, the first 1 byte (see reference numeral 313) becomes “9 (H)” and the channel number (00 (H) in this embodiment) as in the case of the sign and note-on. Reference numeral 314) denotes a switch number, and a table indicating its assignment in the electronic musical instrument is stored in advance in, for example, the ROM 22. Fig. 11 shows an example of a correspondence table of switch numbers and switch names in the present embodiment. 11, keys constituting a so-called numeric keypad (see reference numeral 1101) including a “+ (plus)” key and a “− (minus)” key in the table 1100 are switch numbers 0, respectively. To other keys (for example, tone key 1102, song key 1103, etc.) are also assigned to predetermined switch numbers (for example, “ 2 ", it is associated with" 13 ").

  When the electronic musical instrument 10 accepts the MIDI data indicated by reference numeral 312, the electronic musical instrument 10 turns off a predetermined switch. Therefore, the MIDI data 312 is a message indicating switch-off. The MIDI data 312 basically has a configuration similar to the MIDI data 302 indicating note-off. That is, the first 1 byte (see reference numeral 315) becomes “8 (H)” and the channel number (00 (H) in this embodiment) as in the case of the sign and note-off. Reference numeral 314) is a switch number.

  In the present embodiment, the electronic musical instrument 10 is switched from the normal mode to the switch execution mode using an exclusive message indicated by reference numeral 321. This exclusive message is data in which the first byte is “F0 (H)” and the last byte (EOX) is “F7 (H)”.

FIG. 4 is a diagram illustrating an example of the data configuration of the SMF 33 stored in the storage device 32 of the PC 15. As shown in FIG. 4, the SMF 33 includes a plurality of data records (see reference numerals 401 to 410), and the SMF player 31 sequentially reads the records. In the example of FIG. 4, the first record 401 is delta time “0”, that is, data indicating that the next record is to be read immediately. The next record 402 is “exclusive message 1”, and is data for switching the operation mode from the normal mode to the switch execution mode in the electronic musical instrument 10 as described above. Thereafter, records of delta time t ₀ (symbol 403), note-on # (number) 0 (symbol 404), delta time t ₁ (symbol 405), and note-off # 0 (symbol 406) are stored. According to these records, after waiting a time corresponding to the delta time t _0, and outputs the note-on # 0, further, after waiting for a time corresponding to delta time t _1, shown to output the note-off # 0 It is. The record 410 at the end of the SMF 33 is the exclusive message 2 and is data for switching the operation mode from the switch execution mode to the normal mode in the electronic musical instrument 10.

  FIG. 5 is a flowchart showing an example of data transmission processing executed in the SMF player 31 provided in the PC 15. As shown in FIG. 5, the SMF player 31 first performs initialization including clearing its own memory (not shown) (step 501), and reads the record of the SMF 33 (step 502). The SMF player 31 determines whether or not the read record is a delta time (step 503). If the record is a delta time (Yes in step 503), the SMF player 31 waits for a time corresponding to the delta time (step 504), Proceed to step 506.

  If it is determined No in step 503, the SMF player 31 outputs data included in the record (step 505). The SMF player 31 determines whether the processing has been completed up to the last record (step 506). If NO is determined in step 506, the process returns to step 502. In this way, MIDI data is transmitted from the SMF player 31 to the electronic musical instrument 10.

  FIG. 6 is a flowchart schematically showing an example of processing executed in the electronic musical instrument 10 according to the present embodiment. As shown in FIG. 6, when the power of the electronic musical instrument 10 is turned on, the CPU 21 executes initialization including clearing data in the RAM 23 and an image displayed on the screen of the display unit 14 (step 601). When the initialization is completed, the CPU 21 of the electronic musical instrument 10 executes MIDI processing (step 602). FIG. 7 is a flowchart showing an example of the MIDI processing according to the present embodiment. The CPU 21 determines whether MIDI data is input to the MIDI I / F 13 (step 701). If it is determined No in step 701, the process ends. If it is determined Yes in step 701, it is determined whether the received MIDI data is an exclusive message (step 702).

  When it is determined Yes in step 702, the CPU 21 determines whether the message number is “exclusive message 1 (see reference numeral 402 in FIG. 4)” or “exclusive message 2 (see reference numeral 410 in FIG. 4)”. It is judged whether it is. When determining that the message number = 1, the CPU 21 sets the operation mode to the switch execution mode (step 704). Information on the operation mode is stored in the RAM 23. When determining that the message number = 2, the CPU 21 sets the operation mode to the normal mode (step 705).

  If NO is determined in step 702, the CPU 21 determines whether the operation mode is the normal mode (step 706). If it is determined Yes in step 706, the CPU 21 executes processing corresponding to the message indicated in the MIDI data (step 707). For example, if the MIDI data is a note-on message, a process necessary for generating a channel included in the note-on message with a pitch according to the note number and a velocity included in the message is executed. In other words, the operation is the same as when the normal electronic musical instrument 10 receives MIDI data.

  On the other hand, when it is determined No in step 706, the CPU 21 executes a switch operation execution process (step 708). 8 to 10 are flowcharts showing an example of the switch operation execution process according to the present embodiment. The CPU 21 determines whether the MIDI data is a note-on event (step 801). As described above, in the MIDI data indicating switch-on (see reference numeral 311 in FIG. 3), the first one byte is the same as the note-on event of channel “0”. Therefore, the determination of Yes in step 801 means that MIDI data (message) indicating switch-on is accepted by the electronic musical instrument 10.

  If it is determined Yes in step 801, the CPU 21 refers to the number included in the note number area of the MIDI data. As described with reference to FIG. 3, in the MIDI data indicating the switch-on, the switch number is stored in the area storing the note number (note number area) at the second byte. Therefore, it is possible to identify which switch should be turned on by referring to the note number area. If the number in the note number area is any of “0” to “11” (Yes in step 802), the CPU 21 executes a numeric keypad process (step 803). If the number in the note number area is “12”, the CPU 21 executes tone switch (SW) on processing (step 805), and if the number in the note number area is “13” (Yes in step 806). ) CPU 21 executes the song SW on process (step 807).

  Similarly, if the number in the note number area is “14” (Yes in Step 808), “15” (Yes in Step 810), or “16” (Yes in Step 812), the CPU 21 determines that the rhythm SW On processing (step 809), tempo up SW on processing (step 811) or tempo down SW on processing (step 813) are executed.

  The number in the note number area is “17” (Yes in Step 901), “18” (Yes in Step 903), “19” (Yes in Step 905), or “20” (Yes in Step 907). If so, the CPU 21 executes a volume up SW on process (step 902), a volume down SW on process (step 904), a start SW on process (step 906), or a stop SW on process (step 908). .

  If it is determined No in step 801, the CPU 21 determines whether the MIDI data is a note-off event (step 901). As described above, in the MIDI data indicating the switch-off (see reference numeral 312 in FIG. 3), the first byte is the same as the note-off event of the channel “0”. Therefore, the determination of Yes in step 901 means that the electronic musical instrument 10 has received MIDI data (message) indicating switch-off. In the present embodiment, switches that are effectively switched off are tempo up SW, tempo down SW, volume up SW, and volume down SW. These switches are not only turned on for a short time but also when the on state continues, as long as the switches are on, tempo up / down and volume up / down processing is executed. In such a case, when the on state is changed to the off state, it is necessary to perform processing for canceling the tempo up / down and the volume up / down respectively.

  If it is determined as Yes in Step 1001, the number in the note number area is “15” (Yes in Step 1002), “16” (Yes in Step 1004), “17” (Yes in Step 1006), or , “18” (Yes in step 1008), the CPU 21 performs tempo up SW off processing (step 1003), tempo down SW off processing (step 1005), volume SW off processing (step 1007), or volume SW. An off process (step 1009) is executed.

  Processing related to switch on, which is performed in switch operation execution processing, that is, numeric keypad processing (step 803), tone SW on processing (step 805), song SW on processing (step 807), rhythm SW on processing (step 809), Tempo up SW on process (step 811), Tempo down SW on process (step 813), Volume up SW on process (step 902), Volume down SW on process (step 904), Start SW on process (step 906) and Stop SW on processing (step 908) and processing related to switch off, that is, tempo up SW off processing (step 1003), tempo down SW off processing (step 1005), volume up SW off processing (step 1007), volume down SW Off process (step 1009), respectively, processing pertaining to the on-switches in performance mode, and the process regarding off switch, i.e., is substantially similar to the processing executed in the switch process of FIG. 6 (step 603). That is, the CPU 21 executes the same processing as when the switch is actually turned on by the user or when the on-state switch is turned off.

In the following, processing relating to on / off of the switch will be briefly described. FIG. 12 is a flowchart showing an example of numeric keypad processing according to the present embodiment. As shown in FIG. 12, the CPU 21 determines whether the “+ (plus)” key or the “− (minus)” key is on (step 1201). This can be done by determining whether the number of the note number area is “10” or “11” in the MIDI data. When it is determined No at step 1201, CPU 21, for the number _{"n 1"} and the number of two digits composed of _{"n 0", "n} 1 _{n 0",} was one digit _{"n 0} ”Is shifted to the ten digit“ n ₁ ”(step 1202), and the number“ n ”of the note number area is set to“ n ₀ ”(step 1203).

Next, the CPU 11 determines a target to which the number input with the numeric keypad is to be set (step 1204). Step 1204 is determined depending on which tone SW on process (step 805 in FIG. 8), song SW on process (step 807), or rhythm SW on process (step 809) is executed most recently. The setting target mode is determined by these processes. If the setting object is a song, the CPU 21 sets the song number to a two-digit number “n ₁ n ₀ ” (step 1205). If the setting target is a timbre, the CPU 21 sets the timbre number to a two-digit number “n ₁ n ₀ ” (step 1206). If the setting target is a rhythm, the CPU 21 sets the rhythm number to a two-digit number “n ₁ n ₀ ” (step 1207). The numbers set in steps 1205 to 1207 are stored in the RAM 13.

If it is determined Yes in step 1201, the CPU 21 determines whether the “+ (plus)” key has been turned on (step 1208). If the determination in step 1208 is Yes, the CPU 21 increments the two-digit number “n ₁ n ₀ ” (step 1209). On the other hand, if the determination in step 1208 is No, the CPU 21 The two-digit number “n ₁ n ₀ ” is decremented (step 1210). After steps 1209 and 1210 are completed, the process proceeds to step 1204.

  In the tone SW on process (step 805 in FIG. 8), the song SW on process (step 805), and the rhythm SW on process (step 807), the setting target modes are set to tone, song, and rhythm, respectively. Is stored in the RAM 23.

  In the tempo up SW on process (step 811), the CPU 21 increments the tempo value, starts a tempo timer built therein, and sets the tempo up flag to “1”. A tempo value, a tempo up flag, and a tempo down flag described later are stored in the RAM 23. The tempo timer is referred to in an interrupt process (not shown) executed at predetermined intervals. If the tempo up flag is “1”, the tempo value is incremented.

  On the other hand, in the tempo down SW on process (step 813), the CPU 21 decrements the tempo value, starts a tempo timer built in itself, and sets the tempo down flag to “1”. The tempo timer is referred to in interrupt processing (not shown) executed at a predetermined interval. If the tempo down flag is “1”, the tempo value is decremented.

  In the tempo up SW off process (step 1003 in FIG. 10), the CPU 21 stops the tempo timer and resets the tempo up flag to “0”. In the tempo down SW off process (step 1005), the CPU 21 stops the tempo timer and resets the tempo down flag to “0”.

  In the volume up SW on process (step 902 in FIG. 9), the CPU 21 increments the volume value, starts a volume timer built in itself, and sets the volume up flag to “1”. A volume value, a volume up flag, and a volume down flag described later are stored in the RAM 23. The volume timer is referred to in an interrupt process (not shown) executed at predetermined intervals. If the volume up flag is “1”, the volume value is incremented.

  On the other hand, in the volume down SW on process (step 904), the CPU 21 decrements the volume value, starts a volume timer built in itself, and sets the volume down flag to “1”. The volume timer is referred to in an interrupt process (not shown) executed at a predetermined interval. If the volume down flag is “1”, the volume value is decremented.

  In the volume up SW off process (step 1007 in FIG. 10), the CPU 21 stops the volume timer and resets the volume up flag to “0”. In the volume down SW off process (step 1009), the CPU 21 stops the volume timer and resets the volume down flag to “0”.

The start SW on process (step 906 in FIG. 9) will be described below. In the start SW on process, the CPU 21 sets the start address in the ROM 23 of the automatic performance song data corresponding to the song number (the above-described two-digit number “n ₁ n ₀ ”) as the address AD. Also, the timer interrupt by the song timer is validated and the start flag is set to “1”. The timer value and address AD of the song timer are used in song processing (step 605). On the other hand, in the start SW off process (step 907), the CPU 21 invalidates the timer interrupt and resets the start flag to “0”.

  When the MIDI process (step 602 in FIG. 6) ends, the CPU 21 executes a switch process (step 603). In the switch process, an actual operation of the switch constituting the switch unit 12 is detected, and a process according to the detected switch operation is executed. Actually, the switch-on processing shown in FIGS. 8 to 10, that is, numeric keypad processing (step 803), tone SW on processing (step 805), song SW on processing (step 807), rhythm SW on processing (step) 809), tempo up SW on process (step 811), tempo down SW on process (step 813), volume up SW on process (step 902), volume down SW on process (step 904), start SW on process (step 906) ) And stop SW on processing (step 908), and processing related to switch off, that is, tempo up SW off processing (step 1003), tempo down SW off processing (step 1005), and volume up SW off processing (step 1007). , Volume down SW off process Either (step 1009) is performed.

  After the switch process (step 603), the keyboard process (step 604) is executed. FIG. 13 is a flowchart showing an example of keyboard processing according to the present embodiment. As shown in FIG. 13, the CPU 21 scans the keys of the keyboard 11 in a predetermined order (for example, from a key with a low pitch) (step 1301), and whether or not the state of the key to be processed has changed. Is determined (step 1302). When the key is turned on in step 1302, the CPU 21 generates a note-on event indicating that a musical tone having a pitch corresponding to the key is generated based on the key depression (step 1303). If the key to be processed is turned off, the CPU 21 generates a note-off event indicating that the musical tone having the pitch corresponding to the released key is muted (step 1304). The note-on event and note-off event are stored in the event area of the RAM 23.

  After steps 1303 and 1304 are executed, or when it is determined in step 1302 that there is no change in the key state, the CPU 21 determines whether the processing has been completed for all keys (step 1305). If NO in step 1305, the process returns to step 1301. On the other hand, if it is determined Yes in step 1305, the process is terminated.

  After the keyboard processing (step 604), song processing (step 605) is executed. FIG. 14 is a flowchart showing an example of song processing according to the present embodiment. In the song processing, when the start flag is “1” (Yes in Step 1401), the CPU 21 refers to the song data according to the address AD (Step 1402), and sets the song timer value updated in the timer interrupt. Reference is made (step 1403), and it is determined whether there is a musical tone whose sounding time has arrived (step 1404). If it is determined Yes in step 1404, the CPU 21 generates a note-on event indicating that the musical tone having the pitch indicated by the song data is generated (step 1405). In step 1405, the address AD of the song data is advanced.

  If it is determined No in step 1404, it is determined whether there is a musical sound whose sound generation time has elapsed (step 1406). If it is determined Yes in step 1406, a note-off event indicating that the musical tone having the pitch indicated by the song data is muted is generated (step 1407).

  After the song process (step 605), the sound generation process (step 606) is executed. FIG. 15 is a flowchart showing an example of the sound generation process according to the present embodiment. The CPU 21 refers to the event area in the RAM 23 (step 1501) and determines whether there is an unprocessed event (step 1502). If it is determined NO in step 1502, the process ends. If it is determined Yes in step 1502, the CPU 21 determines whether the event is a note-on event (step 1503). If YES is determined in step 1503, the CPU 21 instructs the sound source unit 26 to generate a musical tone having a pitch indicated by the note-on event with a predetermined tone color (step 1504). In response to the instruction, the sound source unit 26 reads the waveform data of the specified tone color based on the specified pitch, and multiplies the read waveform data by the multiplication value based on the envelope. Musical sound data is generated and output to the audio circuit 27.

  If it is determined No in step 1503, that is, if the event is a note-off event, the CPU 21 instructs the sound source unit 26 to mute the musical tone having the pitch indicated by the note-off event (step 150). 1505). In response to the instruction, the sound source unit 26 multiplies the read waveform data by a gradually decreasing release envelope to generate musical sound data and outputs the musical sound data to the audio circuit 27.

  According to the present embodiment, when the MIDI I / F 13 of the electronic musical instrument accepts the MIDI data according to the predetermined sequence output from the SMF player 31, the CPU 21 refers to the message of the accepted MIDI data, An event (switch on / off) for a predetermined switch is executed. Therefore, an event for the switch can be executed according to a predetermined sequence without manual operation by the operator.

  In the present embodiment, the electronic musical instrument 10 operates in any one of a normal mode that operates normally and an event execution mode that executes an event for the switch. The CPU 11 stores MIDI data. When the event message is the first exclusive message indicating the start of the event execution mode, the operation mode is set to the event execution mode, the event is executed for the switch according to the message, and the MIDI data is terminated in the event execution mode. The operation mode is changed to the normal operation mode. Therefore, the operation mode can be switched without the operator.

  Further, in the embodiment, when the MIDI data is a note-on event message, the predetermined operator is turned on, and when the MIDI data is a note-off event message, A predetermined switch is turned off. Therefore, an event about a switch can be included in a normal MIDI message.

  In the above embodiment, in the note-on event message, the value of the note number area is associated with one of a plurality of switches, and the CPU 21 stores the note number area in the note-on event message. The switch associated with the value is identified with reference to the value of, and the event is executed. For example, if the value of the note number area is used, an event can be executed for 128 switches. If channel values are used, events can be executed for 16 switches, and if both channels and note numbers are used, events can be executed for 2048 switches. Further, if medical treatment is performed up to the velocity value, an event can be executed for 128 times (that is, 2048 × 128 = 262144) switches.

  In the above embodiment, the MIDI data is stored in the storage device 32 in the form of a standard MIDI file (SMF), and is given to the electronic musical instrument 10 from the SMF player 31 that reproduces the SMF. Therefore, the MIDI data output side does not need to be a special test tool.

  In the present embodiment, in the normal mode, a tone is generated in the tone generator unit 26 based on a MIDI data message. On the other hand, in the event execution mode, an event for the switch is executed using the same MIDI message. Therefore, either the tone generation or the switch test can be executed by simply switching the operation mode.

  Further, in the present embodiment, when the MIDI data is a note-on event message under the event execution mode, a predetermined switch is turned on, and the MIDI data is a note-off event message. In this case, a predetermined switch is turned off. In this way, event control of the switch is realized by simply using the note-on message and the note-off message.

  The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

  In the above embodiment, the present invention is applied to an electronic musical instrument, and the output from the SMF player is received by the electronic musical instrument. However, the present invention is not limited to this, and the present invention is applied to other electronic devices. You may do it. In this case, it is necessary to provide a MIDI I / F, and it is necessary to store a processing program for executing an event in accordance with MIDI data in the ROM 22.

  In this embodiment, the SMF player is used on the output side of MIDI data. However, the present invention is not limited to this, and any other playback device can be used as long as it can output MIDI data according to a predetermined sequence. May be used. Also, by using SMF, MIDI data is output at a timing based on a predetermined sequence and delta time, but the sequence format of MIDI data is not limited to SMF.

  Furthermore, in the above-described embodiment, the on / off state of the switch is described as an event. However, the present invention is not limited to this, and the present invention is also applied to an operation element other than a switch, for example, an event such as movement of a slider, a volume, and the like. Can be applied.

10 Electronic Musical Instrument 11 Keyboard 12 Switch 13 MIDI / I / F
14 Display 16 Key 15 PC
21 CPU
22 ROM
23 RAM
24 sound system 26 sound source unit 27 audio circuit 28 speaker 31 SMF player 32 storage device 33 SMF

Claims (7)

Automatic operation execution comprising: an electronic device having a plurality of operators; and a MIDI data reproducing device for sequentially outputting a plurality of MIDI data including messages based on MIDI according to a predetermined sequence to the electronic device A system,
MIDI interface means for the electronic device to receive the MIDI data;
An automatic operation execution system comprising event execution means for referring to a message of MIDI data received by the MIDI interface and executing an event for a predetermined operator in accordance with the message. The electronic device operates under any one of a normal operation mode in which the electronic device operates normally and an event execution mode in which an event for the predetermined operator is executed,
When the event execution means sets the operation mode to the event execution mode when the MIDI data is the first exclusive message indicating the start of the event execution mode, an event for the operator according to the message is sent. 2. The operation automatic according to claim 1, wherein the operation mode is set to a normal operation mode when the MIDI data is a second exclusive message indicating the end of the event execution mode. Execution system. The electronic device is an electronic musical instrument;
The event execution means turns on the predetermined operator when the MIDI data is a note-on event message, and the predetermined operation when the MIDI data is a note-off event message. 3. The automatic operation execution system according to claim 2, wherein the child is turned off. A value in at least one of the channel of the message of the note-on event and the note number is associated with any one of a plurality of operators.
The event execution means refers to the value in the message of the note-on event, specifies an operator associated with the value, and turns the operator on. 3. The operation automatic execution system according to 3.   5. The automatic operation execution system according to claim 1, wherein the MIDI data reproducing apparatus is an SMF player that reads a standard MIDI file. Musical tone data generating means for generating musical tone data having a predetermined pitch based on a note-on event message of MIDI data, and for muting the musical tone data based on a message of a note-off event;
MIDI interface means for receiving the MIDI data;
Event execution means for referring to a message of MIDI data received by the MIDI interface and executing an event for a predetermined operator in accordance with the message;
Based on the MIDI data, the operation is performed under any one of a normal operation mode in which a musical sound is generated by the musical sound data generation means and an event execution mode in which an event for the predetermined operator is executed. A featured electronic musical instrument.   In the event execution mode, when the MIDI data is a note-on event message, the event execution means turns on the predetermined operator, and the MIDI data is a note-off event message. 7. The electronic musical instrument according to claim 6, wherein the predetermined operation element is turned off in some cases.

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