JPH06242778A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To provide the electronic musical instrument on which a player can visually recognize the interval and length of a musical sound being generated when playing a MIDI musical instrument. CONSTITUTION:When note-ON information is inputted from the external MIDI musical instrument to the electronic musical instrument, the note-ON information is detected at S7-2 (S is an abbreviation of a step) of MIDI input data read processing executed by a main loop and after flag-setting processing is performed at S7-3-S7-7, display processing is performed at S7-8 to display the interval of a musical sound corresponding to this note-ON information and an initial note, indicating the length of a sound of the least unit previously set with the value of a time base B, on a score on a display. Then, this display processing is repeatedly performed by timer interruption with time and the initial note which is displayed on the display is updated into a note having longer sound length and displayed.

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, and more particularly to MIDI (Musical Instrument Digital Interface).
The present invention relates to an electronic musical instrument capable of inputting standard information and displaying the performance information as a musical score or the like on a display device in real time.

[0002]

2. Description of the Related Art Conventionally, there is known an electronic musical instrument which displays a musical performance on a musical score such as a musical score by inputting MIDI information which is a unified standard of communication procedures of the electronic musical instrument. This electronic musical instrument is a MIDI that inputs MIDI information.
Equipped with an input terminal and a display such as a CRT or LCD for displaying a musical score. For example, if a performer plays a MIDI musical instrument such as a keyboard and inputs MIDI information to this electronic musical instrument, the musical performance of the performer is performed in real time. It is displayed as a score on the display.

By the way, this electronic musical instrument displays a musical performance input by MIDI information in the following manner. That is, in the MIDI information, when the note-on information indicating the pronunciation of a musical tone (in the case of a keyboard instrument, indicating that the keyboard is pressed) is input from the MIDI input terminal, it indicates the mute of the musical tone (of the keyboard instrument. In this case, the elapsed time (step time) is counted until the note-off information (indicating that the keyboard has been released) is input, and the note number (information indicating the pitch of a musical tone) included in this step time and the note-on / off information. ) And, the musical note whose length and pitch have been fixed is successively displayed in the score by superimposing it on the previously displayed staff.

[0004]

However, in the above-described conventional electronic musical instrument, since the musical tone is displayed as a musical note only after the note-off information indicating the mute of the musical tone is input as described above, For example, even if the keyboard is being sounded by continuing to hold down the key, the sound is not displayed on the score until the keyboard is released and the sound is stopped.
Therefore, there is a problem that the player cannot visually recognize the information such as the pitch and the length of the musical sound currently being produced.

The present invention solves the above-mentioned problems.
It is an object of the present invention to provide an electronic musical instrument that allows a performer to visually recognize the pitch and length of a musical sound currently being produced.

[0006]

The present invention for attaining this object includes a MIDI information input means M1 for inputting MIDI information from the outside, as shown in FIG.
In the electronic musical instrument for displaying the performance information transmitted by the MIDI information input from the DI information input means M1 on the display device M2, note-on indicating the pronunciation of a musical tone among the MIDI information input from the MIDI information input means M1. Note-on information detecting means M3 for detecting information, and the MI
Of the MIDI information input from the DI information input means M1, the note-off information detecting means M4 for detecting the note-off information indicating the muting of the musical tone, and the case where the note-on information is detected by the note-on information detecting means M3. Has
Before the input of the note-off information indicating the mute of the tone corresponding to the note-on information is detected by the note-off information detecting means M4, the pitch of the tone corresponding to the note-on information is displayed on the display device M2. The electronic musical instrument is characterized in that it is provided with a pitch display control means M5.

The invention of claim 2 is, as illustrated in FIG.
A MIDI information input means M11 for inputting MIDI information from the outside is provided, and the performance information transmitted by the MIDI information input from the MIDI information input means is displayed on the display device M1.
In the electronic musical instrument shown in FIG. 2, among the MIDI information input from the MIDI information inputting means M11, note-on information detecting means M13 for detecting input of note-on information indicating the pronunciation of a musical sound, and input of the note-on information. Is detected by the note-on information detecting means M13,
An initial note indicating the pitch of a tone corresponding to the note-on information and a preset minimum unit note length, and an initial note displayed on the display device prior to the input of the note-on information indicating the mute of the tone. Display control means M14 and clock means M for counting the elapsed time from the input of the note-on information.
15 and a note display update unit M16 for sequentially updating the initial notes into notes having a longer note length and displaying the notes on the display device in accordance with the increase of the elapsed time measured by the time measuring unit M15. The gist is an electronic musical instrument characterized by having it.

[0008]

According to the electronic musical instrument of the present invention having the above-mentioned structure, when note-on information indicating the pronunciation of a musical tone is input to the MIDI information input means M1 from an external MIDI instrument, the note-on information is detected. Detected by M3. When the note-on information is detected, the pitch display control means M5 detects the note-off information indicating the mute of the musical tone corresponding to the note-on information before the note-off information detection means M4 detects the input. The pitch of the musical tone corresponding to the note-on information is displayed on the display device M2.

That is, for example, when a MIDI musical instrument such as a keyboard musical instrument is played and MIDI information is input from the MIDI information input means M1 to display the musical score as a musical score, when a desired keyboard of the MIDI musical instrument is pressed to generate a sound, the pressed keyboard is pressed. Without waiting for the key to be released, the pitch of the tone is immediately CR
It is displayed on the display device M2 such as T.

Further, in the electronic musical instrument of the second aspect, when the note-on information indicating the pronunciation of a musical tone is input to the MIDI information input means M11, the note-on information is detected by the note-on information detecting means M13 and is initialized. By the note display control means M14, the initial note indicating the pitch of the musical tone corresponding to the note-on information and the preset length of the minimum unit of the tone is input before the input of the note-off information indicating the mute of the musical tone. It is displayed on the display device M12. Then, the time measuring means M15 counts the elapsed time from the input of the note-on information, and the note display updating means M16 according to the increase of the elapsed time measured by the time measuring means M15.
Causes the initial note to be sequentially updated to a note having a longer note length and displayed on the display device M2.

That is, when a MIDI musical instrument such as a keyboard musical instrument is played and the musical score is displayed on the display device M12, the minimum unit note length is preset to, for example, a sixteenth note and the performance is started. Then, when a desired key of the MIDI musical instrument is pressed to produce a sound, an initial note of a sixteenth note indicating the pitch of the musical tone is immediately displayed on the display device M12 without waiting for the key being pressed to be released. When the keyboard is kept pressed, the initial note of the 16th note displayed first is sequentially updated to a note having a longer note such as an eighth note or a quarter note as the elapsed time increases, and the display device is updated. M12
Is displayed in.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention described above will be described with reference to the drawings. FIG. 3 is a block diagram showing the main electrical configuration of the electronic musical instrument 1 of this embodiment. As shown in FIG. 3, the electronic musical instrument 1 has a MIDI input terminal 3 for inputting MIDI information from the MIDI musical instrument 2 and MI for other MIDI musical instruments.
A MIDI output terminal 5 for outputting DI information, a CRT display 7 for displaying a musical score of a performance by a MIDI musical instrument 2 (an electronic organ in this embodiment), a metronome sound or the like serving as a reference for the tempo of the performance depending on the case. An operation panel 11 provided with a speaker 9 for emitting a sound, a start switch 11a for starting a "score display state" described later, and other various switches (not shown) for inputting various set values and controlling actual operation. , An electronic control unit 13 and the like are provided.

The electronic control unit 13 includes a well-known CPU 15,
It is composed of a ROM 17, a RAM 19, a timer 21 and a bus 23 connecting them, and the like.
ROM17, RAM19, timer 21 is the bus line 2
Via the above MIDI input terminal 3, MIDI output terminal 5, display 7, speaker 9, operation panel 1
1 is mutually connected.

The MIDI information input to the electronic musical instrument 1 of this embodiment will be described below. MIDI for transmitting performance information such as pronunciation and mute of the MIDI musical instrument 2 to the electronic musical instrument 1.
As shown in Table 1 below, the information is usually structured as data with 1 unit of 3 bytes consisting of 1 byte status byte (1st byte) and 2 bytes data byte (2nd and 3rd bytes). There is.

Of these, the first byte (status byte)
Includes a status indicating note-on information (that is, information indicating pronunciation), note-off information (information indicating mute), and the like,
A channel code indicating from which musical instrument (up to 16 types can be set) the individual MIDI information is set. In the second byte, a note number (pitch) indicating the type of pitch (that is, key type) is set, and in the third byte, velocity (volume) indicating the keystroke speed of the keyboards 2a to 2c is set. The data shown is set.

[0016]

[Table 1]

Further, the MIDI information includes data for controlling the operation of the musical instrument system in addition to the data for transmitting the performance information as described above, which includes, for example, a 1-byte format start (FAH). , Stop (FCH), timing clock (also called MIDI clock: F8H)
There is data such as.

Next, the operation of the electronic musical instrument 1 of this embodiment will be described. The electronic musical instrument 1 of this embodiment is a MIDI musical instrument 2
By inputting the performance by the above as MIDI information, the performance is displayed on the display 7 in real time as shown in FIG.

The operation will be described concretely. First, before starting the performance of the MIDI musical instrument 2 and displaying the score, the switch of the operation panel 11 is operated to measure the beat of the music to be played. (For example, 4/4 time signature, 6/8 time signature, etc.), performance tempo T, and time base B are input in advance.

Here, the value of the tempo T of the performance indicates how many times a quarter note is struck in one minute, as is generally used in a metronome or the like. For example, if T = 40, it is the speed of striking a quarter note 40 times in 1 minute. Also,
The time base B is, for example, 1, 2, 3, 4, 8, 1
It is selected from integer values such as 6, and represents how many quarter notes are to be decomposed. The decomposed notes are notes having a preset minimum unit note length. That is,
For example, if B = 4 is set, the minimum unit is a 16th note that is a quarter of a quarter note, and as shown in FIG. Will be displayed. Also, all performances of notes shorter than 16th notes are displayed on the score as 16th notes. B = 1
Is a quarter note unit, and B = 3 is an eighth note triplet unit.

After inputting various setting values in this manner, the start switch 11a (see FIG. 1) of the operation panel 11 is pressed to instruct the start of the "musical score display state", and at the same time, the performance of the MIDI musical instrument 2 is started. , For example, keyboard 2
When the keyboard 2d of the "do" sound of a is pressed, note-on information is input from the MIDI input terminal 3 and immediately (that is, without waiting for the key release of the keyboard 2d) as shown in FIG. 4 (a). This "do" sound is a 16th note 4 with the minimum unit length.
1 is displayed on the staff.

Then, the keyboard 2d of this "do" sound is set to 8
When the pressing is continued for a time corresponding to a quarter note, the display of the 16th note shown in FIG. 4A is updated to the eighth note 43 as shown in FIG. 4B. If you continue to press the keyboard,
As shown in (c) to (e), the display is sequentially updated to long notes such as quarter note 45, dotted quarter note 47, and half note 49.

Next, the control process performed by the electronic musical instrument 1 operating as described above will be described in detail with reference to the flowchart. FIG. 5 is a flowchart of the main loop showing an outline of the control processing of the electronic musical instrument 1. This main loop is divided into four major steps. That is,
In the initialization process of S1-1 (S is an abbreviation for step), basic initialization of the electronic control unit 13 such as clearing of the RAM 19 is performed, and the panel switch scan process of S1-2 described above. The operation of the switches of the operation panel 11 is detected, and control such as start and stop of the "musical score display state" and various settings such as the time base B, performance tempo T, and time signature are performed. And M of S1-3
In the IDI input data reading process, the MIDI input data once stored in the RAM 19 is read, note-on information is detected, and the display process of displaying the musical score as described above is performed. In the other processes of S1-4,
Other processing not included in S1-1 to 3 is performed. still,
Detailed control processing of the panel switch scan processing of S1-2 and the MIDI input data reading processing of S1-3 will be described later.

Then, during execution of the main loop, the first interrupt processing, the second interrupt processing, and the third interrupt processing shown in FIGS. 6 to 8 are executed. Of these, Figure 6
The first interrupt process shown in is the MIDI input terminal 3 (see FIG.
MIDI data serially input from
It is executed when it is stored in the serial input port built in U15. In S2-1, MIDI data is read from the serial input port, and in S2-2, this data is stored in the FIFO first memory of the RAM 19. Save and buffer processing once. The saved MIDI data is later read in the MIDI input data read processing (S1-3) of the main loop (see FIG. 5).

The second interrupt process shown in FIG. 7 is executed when the data stored in the serial output port (also built in the CPU 15) is completely output. First, in S3-1. Then, it is determined whether or not the MIDI output mode is set. Here, the MIDI output mode is a mode in which MIDI data is output from the MIDI output terminal 3 and transmitted to another MIDI musical instrument. Then, if a negative determination is made in S3-1, the processing is terminated and the process returns to the main loop, but if an affirmative determination is made, that is, in the MIDI output mode, the process proceeds to S3-2,
Read the MIDI data from the FIFO second memory,
At 3-3, this MIDI data is set to the serial output port. That is, this process is a process for asynchronously serially outputting the buffered MIDI data.

Then, the third interrupt processing shown in FIG.
In the "internal clock mode", an interrupt is executed for each system clock signal inside the electronic control unit 13 (for example, a signal generated every 1 msec), and various counters are counted and as shown in FIG. This is a routine for measuring a gate time, which is a reference time when the note length is updated and displayed. In this routine, first in S4-1, it is detected whether or not the running flag (which is a flag that is turned on when the start switch 11a is pressed to be in the "musical score display state") is turned on, and the running flag is turned on. If there is (that is, if it is the "musical score display mode"), the process proceeds to S4-2 to perform the time counting process.

The timing process is shown in detail in FIG. First, on / off of the running flag is detected in S5-1, and if it is off, the process is temporarily terminated. If it is on, the counter value is incremented by 1 in S5-2 and S5-
In step 3, it is determined whether or not the value of this counter has reached a predetermined count value N.

The count value N is determined by the following equation based on the tempo T, the time base B, and the system clock cycle C (msec). 60 × 10 ³ (msec) / T = N × B × C (mse
c) In other words, the time C × N (msec) that elapses after the counter value is counted N times is the sound generation time 60 of the note having the minimum unit length determined by the time base B and the tempo T.
It is equal to × 10 ³ / T / B (msec), and based on this count value N, display processing or the like can be performed with a note of the minimum unit of note length as a reference. In order to obtain the tempo T with fine accuracy, it is desirable to reduce the value of the cycle C of the system clock and increase the value of the time base B.

In the electronic musical instrument 1 of this embodiment,
When the "external clock mode" is set, the above-mentioned timing processing does not use the system clock but the M in the MIDI information.
It is performed based on the timing of the IDI clock. Since this MIDI clock is a signal which is itself sent in a time base of 24 (that is, sent at a timing of 1/24 of a quarter note), the count value N
Is different from the above equation, N = 24 / B.

If it is determined in 5-3 that the counter value does not reach the predetermined count value N, the process is temporarily terminated, but if the counter value becomes N, S5-4.
In step S5-5, the counter value is cleared, and in step S5-5, the step counter is incremented by one. This step counter is
The step time, which indicates the passage of time from the start of the "musical score display mode", is counted. Next, in S5-6, it is determined whether or not the value of the step counter has reached the value of the time base B. If a negative determination is made, the process proceeds to S5-12, which is equal to the value of the time base B. In the case of S5-7
The value of the step counter is cleared at, and the beat counter is incremented by 1 at S5-8. Then, in S5-9, it is determined whether or not the beat counter value has reached a predetermined number of beats (for example, 4 in the case of 4/4 beat), and if a negative determination is made, the process proceeds to S5-12, When the number of beats is reached, the process proceeds to S5-10, the beat counter is cleared to zero, and the value of the bar counter is incremented by 1 in S5-11. The values of these step counter, beat counter, and bar counter define the position in the X-axis (horizontal axis) direction when a note is displayed on the display 7 in the display processing (see FIG. 13) described later. Is.

Then, in S5-12, a process of adding 1 to the gate time is performed. This gate time is S5-3
The counter is incremented by 1 each time it reaches N, and when note-on information is input, M will be described later.
It is cleared in the IDI input data read process (see FIG. 11). That is, this gate time represents the elapsed time from the note-on (start of sound generation) of a certain musical sound, and serves as a reference for the time for updating the displayed musical note as shown in FIG.

Next, in S5-13, a display process (see FIG. 13) for displaying a note on the display 7 is performed, and the process is terminated. The display process will be described later in detail. As described above, the third interrupt process of FIG. 8 is always executed at regular time intervals, and in the "musical score display state", step time, gate time, etc. are measured.

Next, each step of the main loop of FIG. 5 will be described in detail. First, the panel switch scan processing of S1-2 will be described based on the flowchart of FIG. This panel switch scanning process is to detect the operation of the switches of the operation panel 11 as described above. First, in S6-1, whether or not there is a switch event (the switch event is the operation panel 11 Occurs when any switch is pressed), and if negative, the process ends.

On the other hand, if there is a switch event, S6-
If it is determined that the switch event is the above-mentioned "external clock mode", the process proceeds to step S6-3 to set the "external clock mode", and then step S6- At 6, the above-mentioned count value N is set. In the initial state, "internal clock mode"
Is.

On the other hand, if a negative determination is made in S6-2, it is the "internal clock mode", the flow proceeds to S6-4, it is determined whether or not it is an event of the setting switch of the time base B, and the determination is affirmative. If judged, time base B
Value is read and the process proceeds to S6-6 to set the count value N.

Next, if a negative determination is made in S6-4, S
Proceeding to 6-5, it is determined whether or not it is an event of the tempo T setting switch, and if a positive determination is made, the value of tempo T is read and the process proceeds to S6-6 to set the count value N. Next, if a negative determination is made in S6-5, the flow proceeds to S6-7 to determine whether or not it is an event of a beat setting switch. If an affirmative determination is made, the flow proceeds to S6-8 to obtain a beat. The value of is read and the process ends.

On the other hand, if a negative determination is made in S6-7, S
Going to 6-9, it is judged whether or not it is the event of the start switch 11a for instructing the start of the "musical score display state",
If an affirmative decision is made, the routine proceeds to S6-10, the running flag is set, and the routine proceeds to S6-11, where the counter, step counter, beat counter, which has been counted in the above-described timing processing (see FIG. 9), Performs all counter clear processing to clear all bar counter values to zero. And S6
The process proceeds to -12, and it is determined whether or not the mode is the "MIDI output mode". If a negative determination is made, the process ends, but "MID
If it is the “I output mode”, the process proceeds to S6-13 and the FIF
After the event data of the start switch 11a is set in the O second memory, the process is temporarily terminated. In addition, this S6
The data set in -13 is read by the above-mentioned second interrupt processing (see FIG. 7).

Next, if a negative determination is made in S6-9, the flow proceeds to S6-15 to determine whether or not the event is a stop switch instruction for ending the "musical score display state", and an affirmative determination is made. If so, stop processing for clearing the running flag is performed in S6-16, and S6-17, 18
Then, the same MIDI output data setting process as in S6-12 and S13 is performed.

Next, when a negative determination is made in S6-15, the processing proceeds to S6-19, it is determined whether or not it is an event of the switch set to the "MIDI output mode", and if a negative determination is made. The processing is ended as it is, but if an affirmative decision is made, the operation proceeds to S6-20 to set the "MIDI output mode" and then ends the processing once.

Next, the MIDI input data read processing of S1-3 in FIG. 3 will be described in detail with reference to FIG. In the MIDI input data read processing shown in FIG. 11, the MIDI input data once stored in the FIFO first memory is read, note-on information is detected, and
When the note-on information is detected, a display process (see FIG. 13) for displaying the musical tone corresponding to the note-on information as a musical note on the staff is performed.

In this MIDI input data read processing, first, in S7-1, the MIDI data saved in the FIFO first memory is read. And S7
-2, it is determined whether the read MIDI data is note-on information, and if it is note-on information, S7
-3 or later, the following note-on / display processing is performed.

That is, first, in S7-3, it is judged whether or not the running flag is ON, and if a negative judgment is made, the process is once ended, but if an affirmative judgment is made (that is, the "musical score display state"). If so, the process proceeds to S7-4, and a key map is selected from the MIDI channel information of the note-on information. That is, as shown in Table 1 above, the note-on information is a signal of a 3-byte format such as "90H / 40H / 7FH", and "9" of the first byte "90H" is a note-on. Information, and "0" indicates the MIDI channel (0 channel). And
In this embodiment, the upper keyboard 2a of the electronic organ 2 is 0.
For the channels, the lower keyboard 2b corresponds to one channel, and the foot keyboard corresponds to two channels, and a key map is prepared on the RAM for each of these channels. In the above example, channel 0 (that is, the upper keyboard 2a). The keymap corresponding to is selected.

Next, in S7-5, the note number of the second byte of the note-on information ("40 in the above example"
H ”), the flag is set to the key on which the note is on. That is, the key map is a memory that manages the pronunciation status of each note by sequentially addressing note numbers having values of 00H to 7FH, so that, for example, in the above note-on information, the second byte "40H" is used. , Get the pointer on the keymap of channel 0 from "40H"
A flag indicating the pronunciation is set in the buffer corresponding to.

Next, in S7-6, the values of the step counter, beat counter, and bar counter counted in the timekeeping process shown in FIG. 9 are referenced, and these are entered in the key map. That is, as shown in FIG. 12, when note-on "40H" occurs when the value of the step counter is "3", the value of the beat counter is "1", and the value of the bar counter is "0", the key map These values are written in the note number "40H" of.

When the processing of S7-6 is completed, S
Proceeding to 7-7, the gate time counted in S5-12 of the timing processing (see FIG. 9) is cleared to zero. Then, the process proceeds to S7-8, and a display process of displaying a note (note) corresponding to the note-on information on the display 7 is performed.

In this display processing, as shown in the flowchart of FIG. 13, first in S8-1, it is judged whether or not the note-on flag of the key map is set, and if the judgment is negative, the processing is once executed. If the flag is set, the process goes to S8-2 to select a part from the MIDI channel. Here, the part means a part of a musical score that is divided into upper and lower parts such as a high pitch part and a low pitch part in a general musical score, and a musical instrument, and as shown in FIG. 14A, for each MIDI channel (that is, the keyboard 2a Every 2 to 2c) are filled with parts 51a to 51c. It should be noted that parts may be assigned and allocated for each musical instrument (or timbre). In this case, the part corresponds to the program number of the MIDI message.

Next, in S8-3, the Y coordinate on the display 7 is obtained from the note number of the MIDI message. That is, since the note number is information indicating the pitch (pitch of the pitch), as shown in FIG. 14B, the quarter note 5 displayed on the staff according to the note number.
The upper and lower positions (Y coordinate) of 3,55 are determined.

Then, in S8-4, the above-mentioned MID
The X coordinate on the display 7 is obtained from the values of the step counter, beat counter, and bar counter set in S7-6 of the I input data reading process (see FIG. 11). That is, since the values of these counters indicate the timing of sound generation and the position (X coordinate) in the traveling direction of the music, that is, in the left-right direction, the step times are 0, 1 as shown in FIG. 14C, for example. , As the number increases by 2, the 16th note 55
Is displayed on the right side of the staff.

Next, the procedure proceeds to S8-8, and the timing processing (FIG. 9) is performed.
The type of the note (font or pattern) is determined by referring to the value of the gate time measured in (See Reference). That is, the gate time indicates the elapsed time after the input of the note-on information is detected, that is, the length of the sound being produced. As shown in FIG. 14D, the gate time is 0. If there is, a note having the minimum unit note length (16th note 57 if the time base B = 4) is selected as the font and displayed on the display 7. When the sounding time has elapsed and the gate time has become 1, the eighth note 59, which is twice as long as the 16th note, is selected and displayed as the font.

After obtaining the coordinates and fonts as described above, the process proceeds to S8-6 to output and display the musical notes on the display device (display 7), and the processing is terminated. still,
The display process shown in FIG. 13 is also performed in S5-13 of the timekeeping process shown in FIG. That is, the counter is counted N times in S5-2 and is performed every time the gate time is incremented by one.

Here, returning to FIG. 11, when the negative determination is made in S7-2, that is, when the MIDI information is not the note-on information, the process proceeds to S7-9, and it is determined whether or not it is the note-off information. . If it is the note-off information, S
In 7-10, determine whether the running flag is on,
If a negative decision is made, the processing is once ended, but if a positive decision is made, the processing advances to S7-11, where a key map is selected from the MIDI channel in the same manner as in S7-4, and S7-12.
Then, the process proceeds to step S6 after clearing the flag of the key turned off from the note number of the note-off information.

If a negative determination is made in S7-9, the flow proceeds to S7-13 to determine whether the "external clock mode" is set, and if the negative determination is made, the processing is once terminated. Is in "external clock mode",
In step S714 and subsequent steps, timing processing and start processing based on the MIDI message signal are performed. That is, it is determined in S7-14 whether the MIDI data is the MIDI clock, and if an affirmative determination is made, S7-1.
After performing the above-described timing processing (see FIG. 9) at 5, the processing is temporarily terminated. That is, in the external clock mode, unlike the internal clock mode, M
Timing processing is performed by the IDI clock. And
When a negative determination is made in S7-14, the process proceeds to S7-16 to determine whether or not the MIDI data is start (FAH). If an affirmative determination is made, the process proceeds to S7-17 to set the running flag. Then, in step S7-18, all counters clearing processing for clearing all counters in the above-described time counting processing (see FIG. 9) is performed, and the processing ends.

Next, if a negative determination is made in S7-16, the flow proceeds to S7-19 to determine whether or not the MIDI data is stop (FCH), and if a negative determination is made,
The process is ended once, but if an affirmative decision is made, S7-20
At, the stop process for clearing the running flag is performed, and the process ends.

The control processing of the electronic musical instrument 1 of the present embodiment has been described in detail above with reference to the flow charts of FIGS. 5 to 14. Here, the operation of the electronic musical instrument 1 will be described with reference to these flow charts and FIG. I will explain together. First, M
Before the performance of the IDI musical instrument 2, set values such as the time base B (here, B = 4) and the tempo T are set on the operation panel 11.
When further input, these values are read and set in the panel switch scan process (see FIG. 10) of the main loop of FIG.

Next, when the start switch 11a of the operation panel 11 is pressed and the MIDI musical instrument 2 is started to be played, and the keyboard 2d of the "do" sound is pressed, this note-on information is once displayed as the first note in FIG. FIFO 1 by interrupt processing
After being saved in the memory, it is read in S711 of the MIDI input data reading process of FIG. 11, and this note-on information is detected in S7-2. Then, the process proceeds to S7-3 and subsequent steps, the note-on / display process is performed, and after the gate time is cleared to zero in S7-7, the process proceeds to S7-8, and the display process of FIG. 13 is performed. Here, since the gate time value is “0” and the time base B = 4, as shown in FIG. 4A, the sixteenth note 41 indicating the sound “do” is displayed on the display 7 in the notation. Displayed above. That is, before the note 2d of the "do" sound is released and the note-on information is input, the "do" sound is immediately displayed on the score.

Then, when the keyboard 2d of this "do" sound is kept pressed and the time corresponding to the eighth note elapses, the timing of S4-2 of the third interrupt processing of FIG. In the process (see FIG. 9), the clocked gate time is incremented by 1 (see S5-13), and the display process of S5-13 (see FIG. 13) is executed. Here, since the value of the gate time has increased to “1”, in S8-5 of the display processing of FIG. 13, the eighth note with a longer note is selected as the font, and is shown in FIG. The 16th note is updated to the 8th note and displayed on the display 7 as shown in FIG.

When the keyboard 2d of the "do" sound is kept pressed, the gate times of the clocking process of FIG. 9 are sequentially added, and the display process of S5-13 is performed each time.
As shown in (c) to (e), the display is sequentially updated to long notes such as quarter note 45, dotted quarter note 47, and half note 49.

As described above, according to the electronic musical instrument 1 of this embodiment, when the note-on information indicating the pronunciation of the musical tone of the MIDI musical instrument 2 is input, the note-on information is detected and corresponds to this note-on information. Initial notes indicating the pitch of a musical tone and the length of the minimum unit preset by the value of the time base B are displayed on the display 7 before the input of the note-off information indicating the mute of the musical tone. And according to the increase of the elapsed time from the input of this note-on information,
The initial note is sequentially updated to a note having a long note length and displayed on the display 7.

Therefore, by using the electronic musical instrument 1 of this embodiment, the performer can confirm the pitch and the length of the musical tone that is currently sounded on the score, which is effective for learning the correct performance. is there. As described above, the embodiments of the present invention have been described in detail, but the present invention is not limited to the above embodiments and can be implemented in various modes without departing from the scope of the invention.

[0060]

As described above, according to the electronic musical instrument of claim 1 of the present invention, when the note-on information is input, the note-off information indicating the mute of the musical tone corresponding to the note-on information is input. Before being detected, the pitch of the musical tone corresponding to this note-on information is displayed on the display device, allowing the performer to visually recognize the pitch of the musical tone currently being pronounced, and to learn the correct playing technique. It has a remarkable effect.

According to the electronic musical instrument of claim 2 of the present invention, when the note-on information is input, the pitch of the musical tone corresponding to the note-on information and the preset length of the minimum unit are The initial note indicating is displayed on the display device before the note-on information indicating the mute of this musical tone is input, and as the elapsed time increases, the initial note is updated to a note with a longer note length. Since it is displayed, the performer can visually recognize the pitch and the length of the musical tone that is currently being pronounced, which has a remarkable effect on the acquisition of correct playing technique.

[Brief description of drawings]

FIG. 1 is an exemplary diagram of a basic configuration of the invention of claim 1.

FIG. 2 is an exemplary diagram of a basic configuration of the invention of claim 2;

FIG. 3 is a block diagram showing a schematic configuration of an electronic musical instrument of the embodiment.

FIG. 4 is an explanatory diagram showing an operation of displaying a musical score of the electronic musical instrument of the embodiment.

FIG. 5 is a flowchart showing a main loop of the embodiment.

FIG. 6 is a flowchart showing first interrupt processing.

FIG. 7 is a flowchart showing second interrupt processing.

FIG. 8 is a flowchart showing a third interrupt process.

FIG. 9 is a flowchart showing a timing process.

FIG. 10 is a flowchart showing a panel switch scan process.

FIG. 11 is a flowchart showing a MIDI input data reading process.

FIG. 12 is an explanatory diagram showing a method of writing various counter values in a key map.

FIG. 13 is a flowchart showing a display process.

FIG. 14 is an explanatory diagram showing the operation of display processing.

[Explanation of symbols]

 M1, M11 ... MIDI information input means M2, M12 ... Display device M3, M13 ... Note-on information detection means M4 ... Note-off information detection means M5 ... Pitch display means M14 ... Initial stage Musical note display control means M15 ... Clock measuring means M16 ... Musical note display updating means 1 ... Electronic musical instrument 2 ... MIDI musical instrument 3 ... MIDI input terminal 7 ... Display 41-49, 53-59. ··note

Claims (2)

[Claims] 1. A MID for inputting MIDI information from outside
An electronic musical instrument comprising I information input means for displaying performance information transmitted by the MIDI information input by the MIDI information input means on a display device. Note-on information detecting means for detecting note-on information indicating pronunciation, note-off information detecting means for detecting note-off information indicating mute of a musical tone in the MIDI information input from the MIDI information input means, When the on-information is detected by the note-on information detecting means, the input of the note-off information indicating the mute of the musical sound corresponding to the note-on information is detected by the note-off information detecting means. A pitch display control means for displaying the pitch of a musical tone corresponding to the note-on information on the display device. An electronic musical instrument. 2. A MID for inputting MIDI information from outside
An electronic musical instrument comprising I information input means for displaying performance information transmitted by the MIDI information input by the MIDI information input means on a display device. Note-on information detecting means for detecting input of note-on information indicating pronunciation, and a tone pitch corresponding to the note-on information when the input of the note-on information is detected by the note-on information detecting means. Initial note display control means for displaying an initial note indicating a preset minimum unit note length on a display device prior to input of note-on information indicating mute of the musical tone, and input of the note-on information Time counting means for counting the elapsed time from, and the initial notes are sequentially sounded in accordance with the increase of the elapsed time measured by the time measuring means. Electronic musical instrument characterized by comprising a note display updating means for displaying on said display device to update the long notes.