JP3862988B2 - Electronic musical instruments - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic musical instrument that can be played based on automatic performance information.
[0002]
[Prior art]
Conventionally, some automatic musical instruments or accompaniment electronic musical instruments can perform synchronized performance between two or more parts. For example, when a performer plays a melody part based on automatic performance information (song data) in which both melody track (part) and accompaniment track (part) data are stored in advance, the accompaniment part is Some have functions such as a synchro start that starts simultaneously with the performance operation.
[0003]
As a more advanced configuration, no special operation is required, so that beginners can easily enjoy the performance.Every time the performance operation such as key pressing is performed, the corresponding musical sound in the automatic performance information is pronounced. Some have a function of advancing the performance of automatic performance information. An electronic keyboard instrument having such a semi-automatic performance function can be played simply by tapping an arbitrary keyboard in accordance with the timing of the melody, and anyone can enjoy the performance easily.
[0004]
[Problems to be solved by the invention]
However, among the latter configurations, those that have a configuration that can also generate musical sounds due to performance operations, and the former configuration can only be applied to automatic performance information in which the timings of the melody part and accompaniment part are completely the same. There are drawbacks to say. For example, in the latter configuration, when playing performance information starting from an accompaniment part and having a prelude, the performance of the accompaniment part is started by the first performance operation (such as a key pressing operation). There was a problem that the musical sound was generated and the musical sound other than the accompaniment was played, resulting in a strange performance. The same applies to a configuration in which synchronized performance can be performed between two or more parts based on the former automatic performance information.
[0005]
Furthermore, even when a single part is first started automatically, and a performance that is changed to a manual performance in the middle is required, a performance operation is required as a trigger for starting the automatic performance. If a direct musical sound is generated, it will be a strange performance.
[0006]
The present invention was devised in view of the above problems, and is an electronic musical instrument that can be played based on automatic performance information, and provides a configuration in which a predetermined performance operation is used as a trigger for starting performance, thereby providing a natural performance. It is something that can be done.
[0007]
[Means for Solving the Problems]
Keyboard Therefore construction of the present invention is an electronic musical instrument to advance the performance based on the automatic performance information in accordance with the timing and tempo keystroke, melody part and accompaniment part and is provided at least as automatic performance information, which has been depressed If the performance start timing of the accompaniment part of the automatic performance information is earlier than the performance timing of the melody part, only the musical sound of the accompaniment part is not generated. Is a basic feature.
[0008]
According to the above arrangement, since there is no occurrence of direct tone (such as the tone of the key that key depression sounds) is due to the first keystroke, the first key depression operation, the accompaniment part based on the automatic performance information It will act as a trigger to start playing. Therefore, musical sounds other than the performance based on the automatic performance information do not sound at the time of the first key pressing operation, and a natural performance can be performed. Of course, it is also possible to perform a performance that is changed to manual performance from the middle by generating at least a direct musical sound by the next key pressing operation (the musical sound of the key that has been pressed is sounded ).
[0009]
The second aspect of the invention prescribes that the first performance start timing of each part is different, and performance control means (refer to paragraph number 0041 described later) for detecting from which the performance start timing of which part comes first is provided. ing. That is, in the case of the configuration of claim 1, the performance control means automatically detects from which performance part the performance is to be started (see paragraph number 0041 described later), and only by the first performance operation, The automatic performance of the part whose performance is started first is performed without generating a direct musical sound due to the performance operation.
[0012]
With these configurations, the first key pressing operation can simply act as a trigger to start the performance of the accompaniment part based on the automatic performance information, so that no strange musical sounds are generated, so that a natural performance can be performed. Become.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an external configuration of an electronic organ 100 equipped with a performance control device configuration according to an embodiment of the present invention, FIG. 2 is a basic circuit diagram of the electronic organ, and FIG. 3 is a functional block of the present invention. FIG. The electronic organ 100 generates a corresponding musical sound in the music data provided as automatic performance information every time the key is pressed, according to the key pressing operation, and advances the performance of the music data. Features are provided.
[0014]
As shown in FIG. 2, the electronic organ 100 is connected to a system bus 110 via a CPU (Central Processing Unit) 111, a RAM (Random Access Memory) 112, a ROM (Read Only Memory) 113, and a key scan circuit 114a. A connected keyboard unit 114, a panel operation unit 115 connected via a panel scan circuit 115a, a display unit 116 connected via a display control circuit 116a, an FDD unit 117 connected via an FDD control circuit 117a, A tone generation circuit 118 capable of simultaneously generating 64 channels by a sound source and a DSP effect addition circuit 119 are connected to each other, and various commands and data are transferred to these devices through the system bus 110. The DSP effect adding circuit 119 is electrically connected to a sound system 121 such as a D / A conversion circuit 120 for converting a tone with an effect such as reverb into an analog, an amplifier for amplifying the tone, and a speaker for generating sound externally. It is connected to the.
[0015]
The CPU 111 controls each unit of the electronic organ 100 including the configuration of the present invention in accordance with a control program stored in the program memory storage unit of the ROM 112, and also stores application programs stored in the program memory storage unit. This is a configuration in which the RAM 112 is used as a work area and data processing is performed using various fixed data stored in the ROM 113 as necessary.
[0016]
The RAM 112 stores apparatus status information and is used as a work area for the CPU 111. Various registers and flags for controlling the electronic organ 100 are defined in the RAM 112, and the RAM 112 is accessed by the CPU 111 via the system bus 110.
[0017]
As described above, the ROM 113 stores a program for controlling the entire electronic organ 100, and various fixed data (including demo data) used by the CPU 111. The ROM 113 constitutes a music data storage unit 10 to be described later (an FDD unit 117 to be described later may function as the music data storage unit 10 as necessary).
[0018]
The keyboard unit 114 is composed of the keyboard of the electronic organ 100, and includes a plurality of keyboards and a keyboard switch that opens and closes in conjunction with key depression and key release. The key scan circuit 114a interposed between the keyboard unit 114 and the system bus 110 checks the state of the keyboard switch, and generates touch data indicating the strength (speed) of the keyboard touch from a signal indicating ON / OFF thereof. At the same time, it outputs ON or OFF information and its keyboard number. The ON / OFF information, keyboard number, and touch data are sent to the CPU 111 via the system bus 110 as key press information (manual key).
[0019]
In the semi-automatic performance function, the data is sent from the keyboard unit 114 every time the key is pressed by the key pressing operation of the normal keyboard unit 114, and the music data (the automatic performance information selected as described later) ( The melody / accompaniment key) is first played at the basic tempo (default tempo) stored together as part of the song data selected in the song data storage unit 10, and thereafter (for example, from the second key depression). The tempo is detected in accordance with the tempo detected by the tempo detection unit 13 (the tempo set in the tempo timer of the tempo detection unit 13), and is played as a musical sound, and the performance is advanced. Therefore, the accompaniment part is automatically played for the notes of the melody part played by the semi-automatic performance function, and all the accompaniment notes existing between the notes of the melody are automatically played by one key press operation. become.
[0020]
In this embodiment, such a semi-automatic performance function is adopted as the following three modes. Namely, (1) Magical Tact Mode (Mode I): As shown in FIG. 4, the performance is advanced by pressing the keyboard at regular intervals (the timing of pressing the keyboard is shown at regular intervals in the drawing). The tempo and volume of the performance can be changed by the timing and strength of pressing the keyboard. (2) Magical melody mode (mode II): As shown in FIG. 5, accompaniment is accompanied by pressing the key in time with the timing of the melody (the timing for pressing the key in time with the melody part is shown in the drawing). In this mode, the tempo and volume of the performance can be changed by the timing and strength of the keyboard. (3) Magical melody & key mode (mode III): Like the above magical melody mode, this is a mode in which accompaniment is accompanied by pressing the key in time with the timing of the melody. Sounds at the same time. In the present embodiment, description will be made assuming that (3) Magical Melody & Key Mode (Mode III) is selected later.
[0021]
The panel operation unit 115 is provided with various switches such as a power switch and a tone color selection switch, a music selection touch panel, a mode selection touch panel, a volume variable device, and the like. The panel scan circuit 115a interposed between the panel operation unit 115 and the system bus 110 checks the set / reset state of each switch and touch panel provided in the panel operation unit 115, and turns on the panel switch. Data is detected and sent to the CPU 111.
[0022]
The display unit 116 is connected to the system bus 110 via a display control circuit 116a. Under the control of the CPU 111, various operation states of the panel operation unit 115, operation states of the electronic organ 100, music data selection to be described later are selected. This is a configuration for displaying the title of a song to be read out by the reading unit 11.
[0023]
In the present embodiment, the FDD unit 117 is constituted by a floppy disk drive (floppy is a registered trademark), and is connected to the system bus 110 via an FDD control circuit 117a. As required, the music data of the performance music stored in the FDD is read and written under the control of the CPU 111. Of course, instead of such an FDD configuration, it is composed of a CD-ROM drive and various card-type storage devices (flash memory card, compact flash card (compact flash is a registered trademark), SD card, memory stick, MO, etc.). It goes without saying that it is also good.
[0024]
FIG. 3 is a functional block diagram of a configuration according to the present invention incorporated as a configuration for executing the semi-automatic performance function in the electronic organ 100. As shown in the figure, the semi-automatic performance function is divided into a melody part and an accompaniment part, and a performance that stores song data for automatic performance with basic tempo information. A song data storage unit 10 as information storage means, and a song data selection / reading unit 11 that selects song data stored in the song data storage unit 10 according to an instruction, reads the song data at a predetermined tempo, and outputs it. The music data selected from the music data storage unit 10 is received, the performance start timing of the melody part and the accompaniment part is judged, and the generation of the musical tone corresponding to the key pressing information of the first key pressing operation is controlled according to the result. However, the performance control unit 12 that performs both parts automatically in the semi-automatic performance mode and the pressing of the keyboard unit 114 scanned by the key scan circuit 114a. Tempo detection unit 13 for detecting tempo information from the information, song data (melody key and accompaniment key) read from song data storage unit 10 and key press information obtained by actually pressing keys on keyboard unit 114 ( And a key & tone assigner 14 which receives manual keys from the performance control unit 12 and assigns them to each part (a predetermined channel of the musical tone generating circuit 118).
[0025]
In addition, in this embodiment, the key touch circuit 114a also detects the strength of the keyboard touch and outputs it as part of the key press information. The performance control unit 12 determines the detected key press touch strength. This is reflected as velocity information of the accompaniment part in the song data.
[0026]
The music data storage unit 10 includes a ROM 113 (or FDD unit 117). A plurality of song data including a melody part, accompaniment part, and basic tempo information are stored as automatic performance information, and the music specified by the panel operation unit 115 via the performance control unit 12 and the song data selection / reading unit 11 is stored. Data is read out. Note that, as shown in FIGS. 10 and 11 to be described later, the stored music data includes the same or different performance start timings between the melody part and the accompaniment part.
[0027]
The song data selection / reading unit 11 comprises a CPU 111, and selects song data stored in the song data storage unit 10 in response to a song data selection instruction sent from a performance control unit 12 to be described later by a predetermined panel operation. In addition, in response to an instruction from the performance control unit 12, address information for reading out the song data at a basic tempo or at a tempo speed detected by a tempo detection unit 13 described later is generated, and a song data storage unit 10 is output.
[0028]
The performance control unit 12 is constituted by the CPU 111, receives the music data selected from the music data storage unit 10 as described above, determines the performance start timing of the melody part and accompaniment part, and from the melody part. If the performance start timing of the accompaniment part is early (in the case of song data with a prelude), no musical sound corresponding to the key pressing information of the first key pressing operation is generated, and the performance start trigger in the semi-automatic performance mode is used. It has a function to automatically play parts.
[0029]
The performance control unit 12 controls the panel operation information of the panel operation unit 115 and the display state of the display unit 116 via the panel scan circuit 115a and the display control circuit 116a, and the system operates in any mode (magical tact). The mode (mode I), the magical melody mode (mode II), the magical melody & key mode (mode III), etc.) are selected, and further, an instruction relating to the selection of music is sent to the music data selection reading unit 11.
[0030]
On the other hand, the tone and volume information instructed in the panel operation and music data is received and supplied to the key & tone assigner 14 as tone / volume information, and the key number and velocity data of the key depression information of the keyboard unit 114 are supplied to the key & tone assigner 14. And the parameter is supplied to the DSP effect adding circuit 119 based on the reverb parameter set by the panel operation.
[0031]
In addition, the performance control unit 12 automatically performs the accompaniment part according to the basic tempo at the initial stage of the performance in the semi-automatic performance mode, and then corrects the tempo information detected by the tempo detection unit 13 to be described later. It also has a function of automatically playing the accompaniment part in the performance mode.
[0032]
The tempo detection unit 13 includes a CPU 111 and a RAM 112, detects the tempo speed based on the operation (key press) interval of the keyboard unit 114, and reads the song data to the song data selection / read unit 11. Send the data.
[0033]
The key & tone assigner 14 is composed of a CPU 111 and has almost the same function as a normal key assigner. However, when assigning key pressing data or song data to a predetermined channel of the tone generation circuit 118, the channel The musical tone generation circuit 118 is also instructed about the tone color and volume to be read out.
[0034]
In the configuration of the embodiment as described above, when a person who wants to perform with the electronic organ 100 turns on the power, the electronic circuit of the electronic organ 100 is initialized as shown in the main processing routine of FIG. (Step S101). A panel scan is then performed (step S102), and event processing based on the panel scan result is performed (step S103).
[0035]
At that time, it is checked whether or not there is a start / stop event in the semi-automatic performance mode (step S104), and if there is such an event (step S104; Yes), a semi-automatic performance process (1) described later (for the semi-automatic performance mode) Initial processing) is executed (step S105). Conversely, if there is no such event (step S104; No), the process of step S105 is jumped.
[0036]
Thereafter, a key scan of the keyboard unit 114 is executed (step S106), and it is checked whether there is a key-on event (step S107).
[0037]
If there is no key-on event (step S107; No), it is checked whether there is a key-off event (step S108). If there is a key-off event (step S108; Yes), normal mute processing is performed (step S109), and the process returns to step S102. If there is no key-off event (step S108; No), the process directly returns to step S102.
[0038]
On the other hand, if there is a key-on event in step S107 (step S107; Yes), it is checked whether the STT (start / stop) flag is 1 and the RUN flag is set to 0 (step S110). If the STT flag is 1 and the RUN flag is set to 0 (step S110; Yes), a semi-automatic performance process {circle around (2)} (performance process when accompaniment part comes first) is executed (step S111). The process returns to step S102.
[0039]
On the other hand, if the STT flag is 1 and the RUN flag is not set to 0 in step S110 (step S110; No), it is checked whether both the STT flag and the RUN flag are set to 1 (step S112). .
[0040]
If both the STT flag and the RUN flag are set to 1 (step S112; Yes), a semi-automatic performance process (3) (subsequent key-on process) described later is executed (step S113), and the process returns to step S102. On the other hand, if neither the STT flag nor the RUN flag is set to 1 (step S112; No), normal sound generation processing is performed (step S114), and then the process returns to step S102.
[0041]
FIG. 7 is a flowchart showing a processing procedure of the semi-automatic performance process (1) in which the initial process of the semi-automatic performance mode is performed in step S105 of FIG. Here, the performance control unit 12 determines the performance start timing of the melody part and the accompaniment part. If the performance start timing of the accompaniment part is earlier, the first key (FSTKY) flag is set to 0 as will be described later. The performance control is performed as shown in FIG.
[0042]
Here, it is first checked whether or not it is a start-on event in the semi-automatic performance mode (step S201).
[0043]
If it is a start-on event of the semi-automatic performance mode (step S201; Yes), (1) the STT flag is set to 1 (set of a flag indicating the start of the semi-automatic performance processing mode), and (2) in the song data The first stored tone, volume, and tempo speed (basic tempo) data is read and set, (3) the bar beat register is cleared, and (4) the melody part and accompaniment part are read out first. (Step S202).
[0044]
Then, it is checked whether or not the first sound of the accompaniment part is pronounced earlier than the first sound of the melody part in the melody part and the accompaniment part set in the reading position in step S202 (4). (Step S203). This is because, as described above, in the semi-automatic performance mode in which accompaniment is accompanied by pressing the key in time with the timing of the melody, the magical melody & key mode (mode III) that also sounds the key actually pressed is simultaneously played. When the song data that starts from the accompaniment part and the prelude is selected is selected, when the accompaniment part performance is started by the first key press operation, a direct musical sound is generated by the above performance operation. This is a check for avoiding the problem that musical sounds other than the accompaniment sound.
[0045]
If the first sound of the accompaniment part is pronounced earlier than the first sound of the melody part (step S203; Yes), the FSTKY flag is set to 0 (step S204), and the main processing routine is entered. Return.
[0046]
On the other hand, if the first sound of the accompaniment part is not pronounced earlier than the first sound of the melody part (step S203; No), the FSTKY flag is set to 1 (step S205), and the main Return to the processing routine.
[0047]
On the other hand, if the event is not the start-on event of the semi-automatic performance mode in step S201 (step S201; No), it is checked whether the semi-automatic performance is being performed, that is, whether the RUN flag is 1 (step S206). If the RUN flag is not 1 (step S206; No), the process returns to the main processing routine.
[0048]
If the RUN flag is 1 (step S206; Yes), it is checked whether it is a start-off event in the semi-automatic performance mode (step S207).
[0049]
If it is not a start-off event of the semi-automatic performance mode (step S207; No), the process returns to the main processing routine.
[0050]
On the other hand, if it is a start-off event in the semi-automatic performance mode (step S207; Yes), (1) all sounds being sounded are muted, (2) the clock counter is stopped, and (3) the RUN flag is set to 0. (4) The STT flag is set to 0 (step S208). Thereafter, the process returns to the main processing routine.
[0051]
FIG. 8 is a flowchart showing the procedure of the semi-automatic performance process (2) in which the first key-on process in the semi-automatic performance mode is performed in step S111 of FIG. That is, when the performance of the accompaniment part is started by the first key pressing operation when the song data starting from the accompaniment part and having the prelude is selected, a direct musical sound is generated by the key pressing operation, This is for performing processing for avoiding the problem that musical sounds other than the accompaniment sound.
[0052]
First, (1) the clock counter is started, and (2) the RUN flag is set to 1 (step S301). Then, it is checked whether or not the FSTKY flag is 1 (step S302).
[0053]
If the FSTKY flag is not 1 (step S302; No), the performance of the accompaniment part is started by the first key depression operation in the semi-automatic performance processing of the music data starting from the accompaniment part and having the prelude. It is necessary to generate a direct musical sound by the operation and make it a content. Therefore, first, the FSTKY flag is set to 1 (step S303), and the process jumps to step S305 described later.
[0054]
If the FSTKY flag is 1 in step S302 (step S302; Yes), the magical melody & key mode (mode) in which the melody part and the accompaniment part start playing simultaneously and the musical tone is generated according to the key depression. The process of III) is executed. First, the manual key corresponding to (1) key-on is sounded, (2) the first sound of the melody part is read and pronounced, and (3) the reading position of the melody part is set to the next sound (step S304). ).
[0055]
Thereafter, the sound of the accompaniment part is sequentially read out at the basic tempo speed until the accompaniment part reading position corresponding to the reading position of the melody part (step S305). Thereafter, the process returns to the main processing routine.
[0056]
FIG. 9 is a flowchart showing a processing procedure of the semi-automatic performance process (3) in which the key-on process in the semi-automatic performance mode is performed in step S113 of FIG. Here, the address information for reading the song data in the song data storage unit 10 at the tempo speed detected by the tempo detection unit 13 is generated in the song data selection / reading unit 11 and is subject to the address information according to the address information. The song data is read from the song data storage unit 10 and output. Therefore, the accompaniment part is automatically played for the notes of the melody part played by the semi-automatic performance function, and all the accompaniment notes existing between the notes of the melody are automatically played by one key press operation. become.
[0057]
First, a manual key corresponding to (1) key-on is sounded, (2) a sound at the reading position of the melody part is sounded, and (3) the reading position of the melody part is advanced to the next sound (step S401). Up to this point, the melody part semi-automatic performance process is performed in the magical melody & key mode (mode III).
[0058]
Next, tempo detection processing by the tempo detection unit 13 is performed. That is, (1) the time from the previous key-on event to the current key-on event is obtained, and (2) the tempo speed desired by the performer is calculated from the required time and the previous note and set in the tempo timer (step S402). . However, instead of the above processing, an operation value between the previous tempo speed and the tempo speed calculated this time may be set in the tempo timer.
[0059]
Then, the sound of the accompaniment part is sequentially read out at the newly calculated (detected) tempo speed up to the accompaniment part read position corresponding to the read out position of the melody part, and sounded (automatically played). Thereafter, the process returns to the main processing routine.
[0060]
In the configuration of the above embodiment, as shown in FIG. 10, when music data having the same performance start timing of the melody part and the accompaniment part is played in the magical melody & key mode (mode III), the actual operation by the first key pressing operation is performed. In addition, as shown in FIG. 11, in the semi-automatic performance processing in the above-described mode of the music data starting from the accompaniment part and having the prelude, as shown in FIG. However, since the performance of the accompaniment part is started by the key pressing operation (the first key pressing operation is handled as a trigger for starting the performance of the accompaniment part), the problem that a musical tone other than the accompaniment sounds is avoided. .
[0061]
In the above embodiment, in the initial stage of the semi-automatic performance processing in the magical melody & key mode (mode III), the accompaniment part is automatically played at the basic tempo specified in the song data, and then the key depression timing is received. The detected tempo information is corrected and the accompaniment part is automatically played in the semi-automatic performance mode. Therefore, the melody part is played with the semi-automatic performance function, and the accompaniment part is automatically played for the notes of the melody part. Therefore, all the accompaniment notes existing between the notes of the melody are automatically played by one key pressing operation.
[0062]
The electronic musical instrument of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. For example, if the strength of the key pressing touch is detected together and the strength of the key pressing touch is reflected as velocity information on the accompaniment part in the music data, the strength of the key pressing touch of the operator can be reduced. The automatic performance is reflected on the accompaniment information in the music data, and the performance can be performed with the sharpness of the music intended by the operator playing the keyboard.
[0063]
【The invention's effect】
As described above, according to the electronic musical instrument according to claim 1 and claim 2, wherein the present invention, as described, does not generate direct tone by first keystroke, the first key depression is based on automatic performance information Since it acts as a trigger for starting the performance of the accompaniment part, it is possible to produce an excellent effect that a musical tone other than the performance based on the automatic performance information is not generated and a natural performance can be performed.
[0064]
Further, even in a configuration in which synchronized performance can be performed between two or more parts based on automatic performance information, when performance is performed based on the above automatic performance information having different performance start timings between these parts, according to these configurations, the first keystroke, by acting as a trigger for playing the beginning of the accompaniment part based on automatic performance information, only the first key depression, without causing immediate tone by said key depression, played earlier Since the accompaniment part is automatically played, no strange musical sound is generated and a natural performance can be performed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an external configuration of an electronic organ 100 equipped with a performance control device configuration according to an embodiment of the present invention.
2 is a basic circuit diagram of the electronic organ 100. FIG.
FIG. 3 is a block diagram showing functional blocks of the present invention.
FIG. 4 is an explanatory diagram showing a display example of music data in the magical tact mode (mode I).
FIG. 5 is an explanatory diagram showing a display example of song data in the magical melody mode (mode II).
6 is a flowchart of a main processing routine of the electronic organ 100. FIG.
FIG. 7 is a flowchart showing a processing procedure of a semi-automatic performance process (1) in which an initial process in a semi-automatic performance mode is performed in step S105.
FIG. 8 is a flowchart showing a processing procedure of a semi-automatic performance process (2) in which the first key-on process in the semi-automatic performance mode is performed in step S111.
FIG. 9 is a flowchart showing a processing procedure of a semi-automatic performance process (3) in which a subsequent key-on process in the semi-automatic performance mode is performed in step S113.
FIG. 10 is an explanatory diagram showing an actual musical tone generated by the first key pressing operation when song data having the same performance start timing of the melody part and the accompaniment part is played in the magical melody & key mode.
FIG. 11 is an explanatory diagram showing a state of actual musical sound generated by the first key pressing operation when song data starting from an accompaniment part and having a prelude is played in the magical melody & key mode.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Song data storage part 11 Song data selection reading part 12 Performance control part 13 Tempo detection part 14 Key & tone assigner 100 Electronic organ 110 System bus 111 CPU
112 RAM
113 ROM
114 Keyboard section 114a Key scan circuit 115 Panel operation section 115a Panel scan circuit 116 Display section 116a Display control circuit 117 FDD section 117a FDD control circuit 118 Music sound generation circuit 119 DSP effect addition circuit 120 D / A conversion circuit 121 Sound system

Claims (2)

In an electronic musical instrument that advances performance based on automatic performance information according to the timing and tempo of key pressing operation,
At least a melody part and an accompaniment part are provided as automatic performance information,
In this mode, the musical tone of the pressed keyboard is generated at the same time, and if the performance start timing of the accompaniment part of the automatic performance information is ahead of the performance timing of the melody part, the musical tone due to the first key pressing operation is not generated. An electronic musical instrument characterized by producing only the musical sound of the accompaniment part .   2. The electronic musical instrument according to claim 1, further comprising performance control means for detecting, from the automatic performance information, which part has the first performance start timing different and which part starts first.

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