JP2002287748A - Electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic musical instrument which enables a player to play even a complicated piece of music on a keyboard with easy fingering in a accordance with automatic playing and doesn't give a sense of incongruity to the player even in the case that the player plays the keyboard while listening to automatic playing. SOLUTION: The electronic musical instrument is provided with a key transposing switch 43 which instructs a player to transpose of sounds produced by operating a keyboard 20 and is provided in an operation panel 21, an automatic playing means 10 which automatically plays a piece of music on the basis of automatic playing data, and a music transposing switch 44 which indicates transposition of sounds produced by the automatic playing means and is provided in the operation panel 21, and sounds produced by the automatic playing means are transposed in response to the indication of the music transposing switch to suppress transposition of sounds produced by operating the keyboard.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument capable of playing a keyboard while performing an automatic performance, and more particularly, to a technique for matching a key of a music played automatically and a key of a music played on a keyboard.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Laid-Open Publication No. Hei 3-25498 (Japanese Patent No. 2747552) discloses an electronic musical instrument capable of transposing (transposing) music (hereinafter referred to as "first prior art"). Technology ”). This electronic musical instrument generates an automatic performance sound based on the automatic performance data stored in advance and also generates a keyboard performance sound according to the keyboard operation of the player. In this electronic musical instrument, when a transpose is instructed, only the keyboard performance sound is transposed while the automatic performance sound remains unchanged. By transposing the keyboard performance sound, it is possible to simplify the song even when the finger operation, that is, the keyboard operation is complicated, and to match the automatic performance sound with the keyboard performance sound.

Further, Japanese Patent Application Laid-Open No. 7-44162 discloses an accompaniment device for playing an electronic musical instrument in time with an accompaniment (hereinafter, this is referred to as "second prior art").
The accompaniment apparatus includes an accompaniment generating means for generating an accompaniment, a display generating means for generating a performance support display such as a musical score for performing the electronic musical instrument in accordance with the accompaniment, and a performance support generated by the display generating means. A changer for changing the display, and a transmitter for transmitting control information for transposing the electronic musical instrument to the electronic musical instrument so that the performance sound matches the performance support display changed by the changer are provided.

According to this accompaniment apparatus, when an electronic musical instrument is played in time with an accompaniment, an easy-to-play support display such as a musical score is used even when the accompaniment is transposed. Transpose accordingly.

[0005]

However, in the first prior art described above, as a result of transposing a sound generated by a keyboard operation, a pitch generated in response to a key depression is originally applied to the key. Since the pitch is different from the assigned pitch (the pitch before transposing), there is a problem that when playing the melody while listening to the automatic performance sound, there is a sense of incongruity.

In the second prior art, the key of the musical score is changed so that the player can easily play the musical instrument.
Since the sound generated by the keyboard operation is transposed in accordance with the changed key, it has the same problem as the first prior art.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is possible to perform a keyboard performance in accordance with an automatic performance with a simple finger even for a complicated song, and to perform an automatic performance. It is an object of the present invention to provide an electronic musical instrument that does not cause a sense of incongruity even when playing a keyboard while listening.

[0008]

In order to achieve the above object, an electronic musical instrument according to a first aspect of the present invention includes transposing a keyboard and a sound generated by operating the keyboard. A key transpose switch for instructing, automatic performance means for automatically playing a music based on automatic performance data, a music transpose switch for instructing to transpose a sound generated by the automatic performance means, and a music transpose switch. Control means for transposing a sound generated by the automatic performance means in response to an instruction from a pause switch, and suppressing transposition of a sound generated by operating the keyboard.

In the electronic musical instrument according to the first aspect, the automatic performance and the keyboard performance can be transposed independently of each other, and when the transposition of the automatic performance is instructed, only the automatic performance is transposed. The transposition of the keyboard performance is suppressed. As a result, if the automatic performance is transposed so that the finger operation of the keyboard operation becomes easy, the sound based on the keyboard operation is generated at the original pitch, so that the automatic performance and the keyboard performance can be matched. It does not make you feel uncomfortable even when playing the keyboard while listening to the automatic performance.

The electronic musical instrument according to the first aspect further includes a display for displaying a musical score obtained by transposing a song automatically played by the automatic playing means in response to an instruction from the song transposing switch. Can be configured.

According to this configuration, the score of the result of the transposition of the automatic performance is displayed on the display, so that if the player operates the keyboard in accordance with the score displayed on the display, the player may feel uncomfortable. There is no.

Further, the electronic musical instrument according to the first aspect,
An easy play switch for transposing a song automatically played by the automatic playing means in C major with one touch can be further provided.

According to this configuration, the finger play can be easily transposed to the C major by one touch of the easy play switch, so that an electronic musical instrument that is easy for beginners to use can be provided.

An electronic musical instrument according to a second aspect of the present invention has a keyboard, automatic performance means for automatically performing a tune based on automatic performance data, and a sound by operating the keyboard for the same purpose as described above. And a mode setting switch for setting a keyboard performance mode for generating a sound or an automatic performance mode for generating a sound by the automatic performance means, and is generated by operating the keyboard in accordance with the mode set by the mode setting switch. A transpose switch for instructing to transpose a sound or a sound generated by the automatic performance means, and when instructed to transpose a sound generated by the automatic performance means by the transpose switch, The sound generated by the automatic playing means is transposed, and the sound is generated by operating the keyboard. Control means for inhibiting the transposition of the sound, and a city.

In the electronic musical instrument according to the second aspect, since only one transpose switch needs to be prepared, the number of switches mounted on the electronic musical instrument can be reduced. As a result, the electronic musical instrument can be configured inexpensively and easily.

In the electronic musical instrument according to the second aspect, similarly to the electronic musical instrument according to the first aspect, it is instructed by the transpose switch to transpose the sound generated by the automatic performance means. In this case, the display device may further include a display for displaying a musical score obtained by transposing a song automatically played by the automatic playing means.

Further, the electronic musical instrument according to the second aspect,
Like the electronic musical instrument according to the first aspect, the electronic musical instrument may further include an easy play switch that transposes the music automatically played by the automatic playing means in C major with one touch.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electronic musical instrument according to an embodiment of the present invention will be described in detail with reference to the drawings.

(Embodiment 1) FIG. 1 is a block diagram showing the configuration of an electronic musical instrument according to Embodiment 1 of the present invention.
This electronic musical instrument includes a central processing unit (hereinafter, referred to as a “CPU”) 10, a program memory 11, a work memory 12, a key scan circuit 13, a panel scan circuit 14, an external storage device 15, The sound source device 16 is configured.

The CPU 10 controls the entire electronic musical instrument according to a control program stored in the program memory 11. The automatic performance means and the control means of the present invention are constituted by the CPU 10. The contents of the processing by the CPU 10 will be described later in detail with reference to a flowchart.

The program memory 11 can be composed of a read only memory (ROM). The program memory 11 stores a plurality of tone parameters respectively corresponding to a plurality of tone colors, various fixed data referred to by the CPU 10, and the like, in addition to the control program described above. Each tone color parameter is composed of, for example, a waveform address, frequency data, envelope data, a filter coefficient, and the like for determining the tone color.

The work memory 12 can be composed of a random access memory (RAM). This work memory 12
Temporarily stores various data used to control the electronic musical instrument. In the work memory 12, buffers, registers, counters, flags, and the like are defined. The main ones among them are as follows. Except for the following, each time it appears in the following description will be described.

(1) Automatic performance data buffer: Temporarily stores automatic performance data of a tune to be automatically performed. (2) Song number register: Stores the song number of the song to be played automatically. (3) Key transpose register: stores the transpose value of the keyboard. (4) Music transpose register: stores the transpose value of the automatic performance. (5) Automatic performance flag: stores whether the electronic musical instrument is performing automatically. (6) Record flag: indicates whether or not performance data generated by playing the keyboard 20 is stored in the work memory 12.

A keyboard 20 is connected to the key scan circuit 13. The keyboard 20 has, for example, 88 keys, and is used to instruct sound generation and mute. The key scan circuit 13 scans each key on the keyboard 20 in response to a command from the CPU 10. Then, key data is created based on a signal indicating the on / off state of each key obtained by this scan. For key data, each key is 1
It consists of a bit sequence corresponding to bits, and each bit is
“1” indicates that the key is being pressed, and “0” indicates that the key is being released. The created key data is sent to the CPU 10 via the system bus 30, and is used to determine whether a keyboard event has occurred.

The panel scan circuit 14 includes an operation panel 2
1 is connected. As shown in FIG. 2, the operation panel 21 includes a play / stop switch 40, a record switch 41, a music selection switch 42, a key transpose switch 43, a music transpose switch 44, and a display 45.

The play / stop switch 40 is used to instruct play and stop of the automatically played music. Each time the play / stop switch 40 is pressed, play and stop are reversed. The state of the play / stop switch 40 is stored in the automatic performance flag.

The record switch 41 is used to record performance data of a tune played on the keyboard 20 in the work memory 12. The performance data of the music recorded in the work memory 12 is stored in an external storage device 15 as automatic performance data.
, And can be selected later by the music selection switch 42.

The music selection switch 42 is used to select an automatic performance music. The music selection switch 42 includes an up switch and a down switch. The up switch increments the song number, more specifically the contents of the song selection register, and the down switch is used to decrement the song number.

The key transpose switch 43 is connected to the keyboard 2
It is used to transpose the keyboard performance sound generated by operating 0 in semitone units.
The key transpose switch 43 includes an up switch and a down switch. The up switch increments the key transpose value, more specifically the contents of the key transpose register, and the down switch is used to decrement the key transpose value.

The song transpose switch 44 is used to transpose the automatic performance sound in semitone units. The song transpose switch 44 is composed of an up switch and a down switch. The up switch increments the song transpose value, more specifically the contents of the song transpose register, and the down switch is used to decrement the song transpose value.

Although details are omitted for the electronic musical instrument,
In addition to the above, the volume switch for determining the volume, the tone switch for determining the tone, the rewind switch for reversing the progress of the automatic performance, the forward switch for fast-forwarding the automatic performance, and the keyboard 20 are played. Music performance data (stored in work memory 12)
Is stored in the external storage device 15 as automatic performance data.

The display 45 is composed of, for example, an LCD. The display 45 is used not only for displaying a musical score, but also for displaying the state of an electronic musical instrument, various messages, and the like.

The panel scan circuit 14 scans each switch of the operation panel 21 in response to a command from the CPU 10. Then, based on a signal indicating the on / off state of each switch obtained by this scan, panel data in which each switch corresponds to 1 bit is created. Each bit indicates ON when “1” and OFF when “0”. This panel data is sent to the CPU 1 via the system bus 30.
Sent to 0 and used to determine if a panel event has occurred.

The panel scan circuit 14 includes a CPU
The display data sent from 10 is sent to the display 45.
Thus, the musical score, the state of the electronic musical instrument, various messages, and the like are displayed on the display 45.

The external storage device 15 is composed of, for example, a floppy (registered trademark) disk device, and stores automatic performance data constituting automatic performance music. When the start of the automatic performance is instructed, the automatic performance data is read from the external storage device 15 and temporarily stored in the work memory 12. Next, an automatic performance sound is generated based on the automatic performance data stored in the work memory 12.

The external storage device 15 includes the operation panel 2
The performance data stored in the work memory 12 when the upper record switch 41 is pressed is also used as automatic performance data. Work memory 1
2 is stored in an external device in response to depression of a store switch (not shown).

The tone generator 16 generates a digital tone signal in response to an instruction from the CPU 10, and generates a digital tone signal.
AC) 25. The D / A converter 25 converts the received digital tone signal into an analog tone signal, and
Send to 6. Amplifier 26 amplifies the signal from D / A converter 25 and sends it to speaker 27. Thereby, a musical tone is generated from the speaker 27.

Next, the operation of the electronic musical instrument configured as described above will be described with reference to the flowcharts shown in FIGS.

(1-1) Main Processing FIG. 3 is a flowchart showing main processing of the electronic musical instrument according to the first embodiment of the present invention. This main processing routine is started when the power is turned on. When the power is turned on, first, an initial setting process is performed (step S1).
0). In this initial setting process, the internal hardware of the CPU 10 is set to an initial state, and buffers, registers, counters,
Initial values are set in flags and the like.

Next, a panel switch process is performed (step S11). In this panel switch processing, processing corresponding to the operation of each switch on the operation panel 21 is performed. The details of the panel switch processing will be described later.

Next, keyboard processing is performed (step S).
12). In this keyboard processing, sound generation processing is performed according to key depression,
Silence processing is performed in response to key release. In this keyboard processing, first, the presence or absence of a keyboard event is checked based on the key data received from the key scan circuit 13, and if it is determined that no keyboard event has occurred, the sequence proceeds to the next step S13 (automatic performance). Processing).

On the other hand, if it is determined that a keyboard event has occurred, then it is checked whether the event is a key press event, and if it is determined that the event is not a key press event, it is determined that the event is a key release event. The sound is silenced by being recognized and sending predetermined data to the sound source device 16.

On the other hand, if it is determined that the event is a key press event, the tone color parameter corresponding to the tone color specified at that time is read out from the program memory 11 and set in the tone generator 16, and Is set in the sound source device 16. As a result, a tone having a pitch corresponding to the pressed key is generated with the tone color specified by the set tone color parameter and the set volume.

In this case, the key transpose switch 43
If the key transposition is specified by the key transposition register, that is, if the content of the key transpose register is not zero, the key transpose value stored in the key transpose register is added to the note number corresponding to the number of the pressed key. Is added or subtracted to provide a sound. As a result, a key transposition function is realized in which a pressed key is transposed and sounded.

Next, automatic performance processing is performed (step S13). In this automatic performance processing, the work memory 12
The automatic performance sound is generated based on the automatic performance data stored in the automatic performance data buffer. At this time, if the music transposition is specified, the note number of the node data included in the automatic performance data is changed according to the music transposition value, as described in the panel switch processing described later. Therefore, if a musical sound is generated based on the automatic performance data stored in the automatic performance data buffer, a transposed automatic performance sound is generated.

Next, other processing is performed (step S14). This “other processing” includes volume change processing when a pedal (not shown) is pressed, and MID (not shown).
When the MIDI data is received by the I interface circuit, a tone generation process, a mute process, a tone change process, and the like are performed.

Thereafter, the sequence returns to step S11, and the same processing is repeated thereafter. In this way,
When events such as the keyboard 20, the operation panel 21, the pedal, and the MIDI input occur in the course of the repetitive execution of steps S11 to S14, processing corresponding thereto is performed.
Thus, various functions as an electronic musical instrument are exhibited.

(1-2) Panel Switch Process Next, the panel switch process will be described with reference to the flowcharts shown in FIGS. In the panel switch process, first, the presence or absence of a panel event is checked (step S20). This is the panel scan circuit 1
4 is performed by referring to the panel data obtained. If it is determined that there is no panel switch event, the sequence returns to the main processing.

On the other hand, if it is determined that there is an event of the panel switch, then it is checked whether or not the event is an ON event of the play / stop switch 40 (step S21). This is performed by checking whether the bit corresponding to the play / stop switch 40 in the panel data has changed from “0” to “1”. It should be noted that the presence / absence of an event of another switch described below can be checked in a similar manner.

If it is determined that the play / stop switch 40 has an ON event, then it is checked whether the automatic performance flag is set to "1", that is, whether the automatic performance is being performed. (Step S2
2). If it is determined that the automatic performance flag is set to "1", it is recognized that the play / stop 40 has been pressed during the automatic performance, and the automatic performance flag is cleared to "0" (step S1). S23) Then, a silencing process for silencing the generated automatic performance sound is performed (step S24). Thereby, the automatic performance is stopped.

On the other hand, if it is determined in step S22 that the automatic performance flag is set to "0", the play / stop 40 is executed in a normal state (a state in which the automatic performance is not being performed).
Is recognized, and the automatic performance flag is set to "1" (step S25). Thereby, the automatic performance is started. If it is determined in step S21 that there is no ON event of the play / stop switch 40, the sequence branches to step S26.

The above steps S22, S23 and S2
By the process of 5, the function of alternately inverting play and stop every time the play / stop switch 40 is pressed is realized.

Next, it is checked whether there is an ON event of the up switch constituting the music selection switch 42 (step S26). If it is determined that there is an ON event, the music number is incremented (step S27). Specifically, the content of the music number register provided in the work memory 12 is incremented by "+1". Then
A music selection process is performed (step S28). In this music selection processing, the automatic performance data corresponding to the music number stored in the music number register is read from the external storage device 15,
The data is stored in an automatic performance data buffer in the work memory 12. If it is determined in step S26 that there is no ON event of the up switch constituting the music selection switch 42, the processing in steps S27 and S28 is skipped.

Next, it is checked whether there is an ON event of the down switch constituting the music selection switch 42 (step S29). If it is determined that there is an on-event, the music number is decremented (step S30). Specifically, if the content of the song number register is "-
1 ". Next, music selection processing is performed (step S
31). This music selection processing is the same as the processing in step S28. If it is determined in step S29 that there is no ON event of the down switch constituting the music selection switch 42, the processing in steps S30 and S31 is skipped.

Next, it is checked whether or not there is an ON event of the record switch 41 (step S32).
Here, when it is determined that there is an ON event of the record switch 41, the record flag is inverted (step S33). Thus, whether the performance data generated by playing the keyboard 20 is stored in the work memory 12 changes each time the record switch 41 is pressed.

Next, it is checked whether there is an ON event of the up switch constituting the key transpose switch 43 (step S34). Here, when it is determined that there is an ON event, it is checked whether or not the key transpose value stored in the key transpose register is a predetermined upper limit (step S35). If it is determined that the value is not the upper limit value, the key transpose value is incremented (+1) (step S3).
6). On the other hand, if it is determined that it is the upper limit value, the process of step S36 is skipped. As a result, the key transpose value is controlled so as not to exceed the upper limit value. If it is determined in step S34 that there is no ON event of the up switch constituting the key transpose switch 43, the processing in steps S35 and S36 is skipped.

Next, it is checked whether there is an ON event of a down switch constituting the key transpose switch 43 (step S37). Here, when it is determined that there is an ON event, it is checked whether or not the key transpose value stored in the key transpose register is a predetermined lower limit (step S38). If it is determined that the value is not the lower limit value, the key transpose value is decremented (-1) (step S3).
9). On the other hand, if it is determined that it is the lower limit value, the process of step S39 is skipped. As a result, the key transpose value is controlled so as not to exceed the lower limit value. If it is determined in step S37 that there is no ON event of the down switch constituting the key transpose switch 43, the processing in steps S38 and S39 is skipped.

Next, it is checked whether there is an ON event of an up switch constituting the music transpose 44 (step S40). Here, when it is determined that there is an ON event, it is checked whether or not the song transpose value stored in the song transpose register is a predetermined upper limit (step S41). Here, if it is determined that it is not the upper limit value, the music transposition value is incremented (+1) (step S42). Next, the contents of the key transpose register are cleared to zero (step S43). Thereby, when the transposition for the automatic performance is performed, the transposition of the keyboard performance is forcibly suppressed.

Next, a transpose process is performed (step S44). Details of this transpose process are shown in the flowchart of FIG.

In the transpose process, first, a process of changing note data is performed (step S60). That is, the automatic performance data of the automatic performance music specified by the contents of the music number register, that is, the note data included in the automatic performance data stored in the automatic performance data buffer is searched for, and is included in the searched note data. The song transpose value stored in the song transpose register is added to or subtracted from the note number. Thus, transposed automatic performance data is generated.

Next, musical score data is generated (step S61). That is, musical score data corresponding to the transposed automatic performance data stored in the automatic performance data buffer is generated. Next, a musical score display process is performed (step S62). That is, the CPU 10 sends the musical score data generated in step S61 to the operation panel 21 via the panel scan circuit 14. As a result, the transposed music score is displayed on the display 45 on the operation panel 21. Thereafter, the sequence returns to the panel switch processing routine.

By such a transpose process,
For example, as shown in FIG. 7, the pitch of a B flat minor song with two flat symbols is increased by a semitone, and as shown in FIG. 8, a C major song without sharp or flat symbols. Is transposed to Then, the musical score in C major is displayed on the display 45, and the pitch of the automatic performance sound is increased by a semitone. Therefore, if the player plays the melody according to the musical score displayed on the display 45, the automatic performance sound matches the melody sound, and furthermore, the player only has to play the keyboard 20 in C major, so that the fingering can be easily performed. Become.

In step S41 of the panel switch process,
If it is determined that it is the upper limit value, steps S42 to S
Step 44 is skipped. Thus, the music transpose value is controlled so as not to exceed the upper limit value. If it is determined in step S40 that there is no ON event of the up switch constituting the music transposition switch 44, the processing in steps S41 to S44 is skipped.

Next, it is checked whether there is an ON event of a down switch constituting the music transpose 44 (step S45). Here, when it is determined that there is an ON event, it is checked whether or not the song transpose value stored in the song transpose register is a predetermined lower limit (step S46). Here, if it is determined that the value is not the lower limit value, the music piece transpose value is decremented (-1) (step S47). Next, the contents of the key transpose register are cleared to zero (step S48). Thereby, when the transposition of the automatic performance sound is performed, the transposition of the keyboard performance sound is forcibly suppressed.

Next, a transpose process is performed (step S49). This transpose process is the same as the process in step S44 described above. If it is determined in step S46 that the value is the lower limit value, the processing in steps S47 to S49 is skipped. This allows
The music transpose value is controlled so as not to exceed the lower limit value. If it is determined in step S45 that there is no ON event of the down switch constituting the music transpose switch 44, the processing in steps S46 to S49 is skipped.

Next, other switch processing is performed (step S50). In this "other switch processing", the volume change processing according to the ON event of the volume switch, the tone color change processing according to the ON event of the tone switch, the processing of reversing the progress of the automatic performance according to the ON event of the rewind switch, A process for fast-forwarding an automatic performance in response to an ON event of a forward switch, and an external storage device as performance data of a song played on the keyboard 20 stored in the work memory 12 in response to an ON event of a store switch as automatic performance data. 15 are executed. Thereafter, the sequence returns to the main processing.

As described above, the electronic musical instrument according to the first embodiment of the present invention is configured so that the transpose of the keyboard performance and the automatic performance can be designated independently, and when the transpose is instructed, Transpose only the automatic performance and control not to transpose the keyboard performance,
Furthermore, the musical score after transposition is displayed on the display.
As a result, if the player transposes the automatic performance so that he / she can easily play it, and plays the melody according to the score displayed on the display 45, the automatic performance sound matches the melody sound, so that the fingering becomes easy. In addition, even when playing the keyboard while listening to the automatic performance sound, the user does not feel uncomfortable.

In the first embodiment, an up-down switch composed of an up switch and a down switch is used as the music selection switch 42, the key transposition switch 43, and the music transposition switch 44. However, the present invention is not limited to this. Not something. For example, various devices capable of increasing or decreasing a value, such as a numeric keypad, a dial, and a slider, can be used.

(Embodiment 2) An electronic musical instrument according to Embodiment 2 of the present invention controls both a key transpose and a music transpose with one transpose switch.
In the following, the same parts as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted or simplified, and different parts will be mainly described.

In the electronic musical instrument according to the second embodiment, a performance mode flag is added to the work memory 12.
The performance mode flag stores whether the electronic musical instrument is set to the normal performance mode or the automatic performance mode. Other buffers, registers, counters, flags, and the like are the same as those of the first embodiment.

FIG. 9 is a diagram showing a configuration of an operation panel of an electronic musical instrument according to Embodiment 2 of the present invention. The operation panel 21 'includes a play / stop switch 40, a record switch 41, a music selection switch 42, a transpose switch 46, a mode setting switch 47, and a display 45. Play / stop switch 40, record switch 41, music selection switch 42, and display 45
Are the same as those of the first embodiment described with reference to FIG.

The mode setting switch 47 is used to set the electronic musical instrument to the normal performance mode or the automatic performance mode. Each time this mode setting switch 47 is pressed,
The normal performance mode and the automatic performance mode are reversed. The state of the mode setting switch 47 is stored in the performance mode flag.

The transpose switch 46 is used to transpose either the keyboard performance sound or the automatic performance sound in semitone units according to the state of the performance mode flag. The transpose switch 46 includes an up switch and a down switch.

The up switch increments the key transpose value stored in the key transpose register when the performance mode flag is set to the normal performance mode, and increases the key transposition value when the performance mode flag is set to the automatic performance mode. The song transpose value stored in the song transpose register is incremented. The down switch decrements the song transpose value stored in the key transpose register when the play mode flag is set to the normal play mode, and shifts the song transpose value when the play mode flag is set to the automatic play mode. Decrements the song transpose value stored in the register.

Next, the operation of the electronic musical instrument according to the second embodiment of the present invention configured as described above will be described with reference to flowcharts.

(2-1) Main Processing The main processing is the same as that of the first embodiment shown in the flowchart of FIG.

(2-2) Panel Switch Processing The panel switch processing in the electronic musical instrument according to the second embodiment of the present invention will be described with reference to the flowchart shown in FIG.

In this panel switch processing, FIG.
The respective processes of steps S20 to S33 of the panel event process of the first embodiment shown in FIG. Therefore, these descriptions are omitted.

When the processing for the record switch 41 is completed, it is checked whether or not there is an ON event of the mode setting switch 47 (step S70). Then, when it is determined that there is an ON event of the mode setting switch 47, the performance mode flag is inverted (step S71). On the other hand, if it is determined that there is no ON event of the mode setting switch 47, the process of step S71 is skipped. Thus, a function of inverting the normal performance mode and the automatic performance mode every time the mode setting switch 47 is pressed is realized.

Next, it is checked whether there is an ON event of the up switch constituting the transpose switch 46 (step S72). Here, if it is determined that there is an on-event, it is then checked whether or not the mode is the normal performance mode (step S73). This is performed by checking the performance mode flag. Here, if it is determined that the mode is the normal performance mode, then it is checked whether or not the key transpose value stored in the key transpose register is a predetermined upper limit (step S74). If it is determined that the value is not the upper limit value, the key transpose value is incremented (+
1) is performed (step S75). On the other hand, if it is determined that it is the upper limit value, the process of step S75 is skipped. As a result, the key transpose value is controlled so as not to exceed the upper limit value.

If it is determined in step S73 that the mode is not the normal performance mode, that is, the automatic performance mode, then it is determined whether or not the music transpose value stored in the music transpose register is a predetermined upper limit value. Is checked (step S76). Here, if it is determined that it is not the upper limit value, the music piece transpose value is incremented (+1) (step S77). Next, a transpose process is performed (step S78). This transpose process is the same as that described with reference to FIG. Thereafter, the sequence branches to step S79.

On the other hand, if it is determined in step S76 that the value is the upper limit, the processing in steps S77 and S78 is skipped, and the sequence branches to step S79.
Thus, the music transpose value is controlled so as not to exceed the upper limit value.

If it is determined in step S72 that there is no ON event of the up switch constituting the transpose switch 46, the processing in steps S73 to S78 is skipped, and the sequence branches to step S79.

In step S79, it is checked whether there is an ON event of the down switch constituting the transpose switch 46 (step S79). here,
If it is determined that there is an on-event, it is then checked whether or not the mode is the normal performance mode (step S8).
0). This is performed by checking the performance mode flag. Here, if it is determined that the mode is the normal performance mode, then it is checked whether or not the key transpose value stored in the key transpose register is a predetermined lower limit (step S81). If it is determined that the value is not the lower limit value, the key transpose value is decremented (-1) (step S82). On the other hand, if it is determined that it is the lower limit value, the process of step S82 is skipped. As a result, the key transpose value is controlled so as not to exceed the lower limit value.

If it is determined in step S80 that the music is not in the normal performance mode, that is, in the automatic performance mode, then it is determined whether or not the music transpose value stored in the music transpose register is a predetermined lower limit. Is checked (step S83). If it is determined that the value is not the lower limit value, the music transpose value is decremented (-1) (step S84). Next, a transpose process is performed (step S85). This transpose process is the same as the process performed in step S78. Thereafter, the sequence branches to step S86.

On the other hand, if it is determined in step S83 that the value is the lower limit, the processes in steps S84 and S85 are skipped, and the sequence branches to step S86.
As a result, the music transpose value is controlled so as not to exceed the lower limit value.

If it is determined in step S79 that there is no ON event of the down switch constituting the transpose switch 46, the processing in steps S80 to S85 is skipped, and the sequence branches to step S86.

In step S86, processing for other switches is performed. The content of this process is the same as the process of step S50 of the panel event process of the first embodiment. Thereafter, the sequence returns to the main processing.

As described above, the electronic musical instrument according to the second embodiment of the present invention is configured such that one transpose switch 46 controls both the key transpose and the music transpose. In addition to the effects of the electronic musical instrument according to the first embodiment, the number of switches can be reduced.

In the second embodiment, an up-down switch composed of an up switch and a down switch is used as the music selection switch 42 and the transpose switch 46, but the present invention is not limited to this. For example, various devices capable of increasing or decreasing a value, such as a numeric keypad, a dial, and a slider, can be used.

(Embodiment 3) An electronic musical instrument according to Embodiment 3 of the present invention is provided with an easy play switch for performing one-touch transposition in C major in the electronic musical instrument according to Embodiment 2. . In the following, a second embodiment will be described.
The same parts as those in the second embodiment are denoted by the same reference numerals as those in the second embodiment, and the description thereof will be omitted or simplified, and different parts will be mainly described.

FIG. 11 is a diagram showing a configuration of an operation panel of an electronic musical instrument according to Embodiment 3 of the present invention. The operation panel 21 "includes a play / stop switch 40, a record switch 41, a music selection switch 42, a transpose switch 46, a mode setting switch 47, an easy play switch 48, and a display 45.

The play / stop switch 40, the record switch 41, the music selection switch 42, the transpose switch 46, the mode setting switch 47 and the display 45
This is the same as that of the second embodiment described with reference to FIG.

The easy play switch 48 is used to transpose an automatic performance in one major touch in C major.

Next, the operation of the electronic musical instrument according to the second embodiment of the present invention configured as described above will be described with reference to flowcharts.

(3-1) Main Processing The main processing is the same as that of the first embodiment shown in the flowchart of FIG.

(3-2) Panel Switch Processing Panel switch processing in the electronic musical instrument according to Embodiment 3 of the present invention will be described with reference to the flowchart shown in FIG. The flowchart shown in FIG. 12 is a part inserted immediately before step S86 in the flowchart shown in FIG. Therefore, the panel switch processing according to the third embodiment of the present invention is performed in accordance with FIGS.
Is performed according to the flowchart shown in FIG.

When the processing for the event of the down switch constituting the transpose switch 46 is completed, it is checked whether or not there is an ON event of the easy play switch 48 (step S90). here,
When it is determined that there is an ON event of the easy play switch 48, it is then checked whether or not the mode is the normal performance mode (step S91).

If it is determined that the automatic performance mode is not the normal performance mode, that is, the automatic performance mode, the tune for transposing the automatic performance data currently stored in the automatic performance data buffer of the work memory 12 into C major. A transpose value is calculated (Step S92). The calculation of the music transpose value is performed using a known technique based on the automatic performance data stored in the work memory 12.

Next, a transpose process is performed (step S93). This transpose process is performed as shown in FIG.
Is the same as the processing described with reference to FIG. Thereafter, the sequence proceeds to step S86. Thereby, the display 45
The musical score in C major is displayed, and the automatic performance data stored in the automatic performance data buffer is converted into automatic performance data corresponding to C major.

As described above, according to the electronic musical instrument according to the third embodiment of the present invention, the easy play switch 4
When the button 8 is pressed, the musical score in C major is displayed on the display 45, and the automatic performance data stored in the automatic performance data buffer is converted into the automatic performance data in C major. Therefore, in addition to the effect of the electronic musical instrument according to the above-described second embodiment, it is possible to transpose to the C major in which the finger operation is simple with only one touch of the easy play switch 48.
This has the effect of being an electronic musical instrument that is easy for beginners to use.

In the third embodiment, an independent switch is provided as the easy play switch 48. However, for example, by pressing the up switch and the down switch constituting the transpose switch 48 simultaneously, the easy play switch 48 is provided. It can be configured to exhibit the same function as the play switch 48. In this case, there is an advantage that the number of switches can be reduced.

In the third embodiment, an up-down switch including an up switch and a down switch is used as the music selection switch 42 and the transpose switch 46, but the present invention is not limited to this. For example, various devices capable of increasing or decreasing a value, such as a numeric keypad, a dial, and a slider, can be used.

The electronic musical instrument according to the first embodiment described above can be modified to a configuration in which the easy play switch 48 according to the third embodiment is added. In this case, immediately before step S50 in the flowchart shown in FIG.
Is inserted. Therefore, the panel switch processing according to the third embodiment of the present invention is performed by using
And the flowchart shown in FIG.

That is, when the processing for the event of the down switch constituting the music transpose switch 44 is completed, it is checked whether or not there is an ON event of the easy play switch 48 (step S90).
Here, if it is determined that the easy play switch 48 has an ON event, then the current work memory 1
A music transpose value for transposing the automatic performance data stored in the second automatic performance data buffer in C major is calculated (step S92).

Next, the contents of the key transpose register are cleared to zero (step S43). As a result, when transposing for automatic performance,
Transposition of keyboard performance is forcibly suppressed. Next, a transpose process is performed (step S9).
3). Thereafter, the sequence proceeds to step S50. As a result, the musical score in C major is displayed on the display 45, and the automatic performance data stored in the automatic performance data buffer is converted into automatic performance data corresponding to C major.

In this case as well, the same function as the easy play switch 48 is exerted by simultaneously pressing the up switch and the down switch constituting the key transpose switch 43 or the song transpose switch 44, for example. can do.

Further, in the electronic musical instruments according to the first to third embodiments, the score is displayed on the display 45. However, the lyrics of the automatically played music are displayed simultaneously with the score. You can also. In this case, the electronic musical instrument can be used as a karaoke device.

[0109]

As described in detail above, according to the present invention,
Provide an electronic musical instrument that can play a keyboard with automatic performance even with complex songs using simple fingers, and does not cause discomfort even when playing the keyboard while listening to the automatic performance it can.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an electronic musical instrument according to Embodiment 1 of the present invention.

FIG. 2 is a diagram showing an example of an operation panel mounted on the electronic musical instrument according to Embodiment 1 of the present invention.

FIG. 3 is a flowchart showing main processing of the electronic musical instrument according to Embodiment 1 of the present invention.

FIG. 4 is a flowchart showing panel switch processing (1) of the electronic musical instrument according to the first embodiment of the present invention.

FIG. 5 is a flowchart showing panel switch processing (part 2) of the electronic musical instrument according to Embodiment 1 of the present invention.

FIG. 6 is a flowchart showing details of transposition processing executed in panel switch processing of the electronic musical instrument according to Embodiment 1 of the present invention.

FIG. 7 is a diagram for explaining an operation of the electronic musical instrument according to the first embodiment of the present invention.

FIG. 8 is a diagram for explaining an operation of the electronic musical instrument according to the first embodiment of the present invention.

FIG. 9 is a diagram showing an example of an operation panel mounted on the electronic musical instrument according to Embodiment 2 of the present invention.

FIG. 10 is a flowchart showing panel switch processing of the electronic musical instrument according to Embodiment 2 of the present invention.

FIG. 11 is a diagram showing an example of an operation panel mounted on an electronic musical instrument according to Embodiment 3 of the present invention.

FIG. 12 is a flowchart showing a part of panel switch processing of the electronic musical instrument according to Embodiment 3 of the present invention.

FIG. 13 is a flowchart showing a modification of the panel switch processing of the electronic musical instrument according to the first embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 CPU 11 Program memory 12 Work memory 13 Key scan circuit 14 Panel scan circuit 15 External storage device 16 Music signal generator 20 Keyboard 21 Operation panel 25 D / A converter 26 Amplifier 27 Speaker 30 System bus 40 Play / stop switch 41 Record Switch 42 Song selection switch 43 Key transpose switch 44 Song transpose switch 45 Display 46 Transpose switch 47 Mode setting switch 48 Easy play switch

Continued on the front page F-term (reference) 5D082 AA03 AA26 5D378 CC13 FF07 FF24 KK17 MM52 MM58 MM63 MM68 MM92 SD04 TT02 TT19 TT23 TT24

Claims (6)

[Claims] 1. A keyboard, a key transpose switch for instructing to transpose a sound generated by operating the keyboard, an automatic performance means for automatically performing a tune based on automatic performance data, A song transpose switch for instructing to transpose a sound generated by the automatic performance means, and in response to an instruction from the song transpose switch,
Control means for transposing a sound generated by the automatic performance means and suppressing transposition of a sound generated by operating the keyboard. 2. The electronic musical instrument according to claim 1, further comprising: a display for displaying a musical score obtained by transposing a song automatically played by said automatic playing means in response to an instruction from said song transposing switch. . 3. The electronic musical instrument according to claim 1, further comprising: an easy play switch for transposing a song automatically played by said automatic playing means in C major with one touch. 4. A keyboard, automatic performance means for automatically playing a tune based on automatic performance data, and a keyboard performance mode for generating a sound by operating the keyboard or an automatic performance mode for generating a sound by the automatic performance means. A mode setting switch to be set; and a transformer for instructing to transpose a sound generated by operating the keyboard or a sound generated by the automatic performance means in accordance with the mode set by the mode setting switch. When a pause switch and an instruction to transpose the sound generated by the automatic performance means are issued by the transpose switch, transposing the sound generated by the automatic performance means and operating the keyboard. Control means for suppressing the transposition of the sound generated by the Musical instruments. 5. A display for displaying a score obtained by transposing a tune automatically played by the automatic performance means when an instruction to transpose a sound generated by the automatic performance means is given by the transpose switch. The electronic musical instrument according to claim 4, further comprising a device. 6. The electronic musical instrument according to claim 4, further comprising an easy play switch for transposing a music automatically played by said automatic playing means in C major with one touch.