JPH11143465A - Electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a player not to feel the difference between the sounding timing of sounding information and the display timing of display information by sending the display information in response to the timing information, and sending the sounding information corresponding to the display information after the display information is sent. SOLUTION: A CPU 1 sends chord musical sound data to a musical sound generation section 8 after sending code display data to a liquid crystal display section 5 among the playing information including the code musical sound data which are the sounding information proceeding according to timing information and code display data which are the display information corresponding to the code musical sound data. The CPU 1 sends the code musical sound data which are the sounding information to the musical sound generation section 8 with a delay. Since the display information is sent prior to the sounding information, the sounding timing and display timing are apparently felt as the same timing, thus a player feels no difference between them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electronic musical instrument for generating musical sounds.

[0002]

2. Description of the Related Art Some conventional electronic musical instruments are provided with display means such as a liquid crystal display device. The electronic musical instrument transmits sound information included in automatic performance information to a musical sound generating means and simultaneously responds to the sound information. Display information to be sent to the display means. For example, along with pronunciation in accordance with pronunciation information such as pitch data and chord data, display information such as corresponding note symbols and chord symbols is displayed to guide a performance operation in accordance with automatic performance.

[0003]

However, it takes time for display means such as a liquid crystal display device to receive and display the display information, and the display means is displayed with a delay from the tone generation of the musical tone information. Furthermore, the auditory sense responds immediately without being particularly conscious of the pronunciation, but the display cannot be seen unless it is consciously seen. In particular, when the keyboard is operated, since the eyes are not always facing the display unit, the response to the visual sense is further delayed. For this reason, the player feels that the timing between the sounding and the display is shifted, and there is a problem that an appropriate performance guide cannot be provided. An object of the present invention is to prevent a player from feeling a difference between a sounding timing of sounding information and a display timing of display information.

[0004]

SUMMARY OF THE INVENTION According to the present invention, there is provided a musical tone generating means for generating a musical tone upon receiving sounding information, out of performance information including sounding information progressing in accordance with timing information and display information corresponding to the sounding information. Display control means for sending display information to the display means in accordance with the timing information; and sound output for sending the sound information corresponding to the display information to the musical tone generating means after the display control means sends the display information to the display means. And control means. According to the present invention, the transmission of the display information is performed before the transmission of the sound information, so that the sound generation timing and the display timing seem to be the same.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of an electronic musical instrument according to the present invention will be described.
Third to third embodiments and modifications will be described with reference to the drawings. FIG. 1 is a block diagram showing a system configuration of the electronic musical instrument of each embodiment. The CPU 1 controls the entire electronic musical instrument and has a built-in ROM (not shown) storing a program and a RAM having an area of FCR2 composed of a flag, a counter and a register. The keyboard 1, the switch 4, and the liquid crystal display 5 are connected to the CPU 1.
Then, the data input from the switch unit 4 is temporarily stored in the RAM, and the performance conditions are set according to the program in the ROM. The sequence data of the performance information may be stored in the ROM or may be input from outside.

FIG. 2 is a diagram of a switch operation unit. There are various switch groups and LED groups indicating the states of the switches around a liquid crystal display (LCD) 5. Power switch 20a
Supplies power to the electronic musical instrument when turned on.
The ED 20b lights up. The rhythm switch 21a is operated when selecting a rhythm mode for setting a rhythm. When the rhythm mode is selected, the LED 21b lights up. The timbre switch 22a is operated when selecting a timbre mode for setting a timbre. LED2 when tone mode is selected
2b lights up. The rhythm mode has two modes, a normal mode and a finger mode. The normal switch 23a is operated when selecting the normal mode. When the normal mode is selected, the LED 23b lights up. The finger switch 24a is operated when selecting the finger mode. When the finger mode is selected, the LED 24b lights up.

The bank select switch 25 is composed of eight switches A to H and is selectively selected. The program select switch 26 is composed of eight switches 1 to 8 and is selectively selected. By selecting combinations of the bank select switch 25 and the program select switch 26, 64 tones and accompaniments can be selected. Therefore, in FIG. 1, the CPU 1 is connected to a timbre memory unit 6 and an accompaniment information memory unit 7. 3 and 4 show a timbre data memory map and an accompaniment data memory map in the timbre memory unit 6 and the accompaniment information memory unit 7, respectively. In the rhythm mode, one rhythm is selected by a combination of the switches 25 and 26, and the rhythm number (00 to 63) is displayed on the liquid crystal display unit 5. Similarly, in the tone color mode, one tone color is selected by a combination of the selection of the switch 25 and the switch 26, and the number (00 to 63) is displayed on the liquid crystal display unit 5 in the tone color.

[0010] Of the other switches in FIG. 2, a tempo switch 27 is a switch for increasing or decreasing the tempo, which is timing information. The start / stop switch 28 is a switch for starting or stopping accompaniment.

In FIG. 1, the musical sound generating section 8 includes a CPU 1
This is a tone generating means for generating a tone signal in response to sound information such as key information, accompaniment information, and timbre information. Tone generator 8
Is provided with a DCO 9 for controlling the pitch of a tone signal, a DCF 10 for controlling a tone, a DCA 11 for controlling a volume, and envelope generators 12, 13, and 14 for determining envelopes of the DCO 9, DCF 10, and DCA 11. . The tone signal output from the tone generator 8 is D /
At A15, the digital signal is converted to an analog signal. Then, the sound is sent to the sound system 16 to generate a sound.

Note that a waveform data memory 17 is connected to the tone generator 8. FIG. 5 shows the waveform data memory 17.
3 shows a waveform data memory map in FIG. Also, CPU
1 is connected to a timer clock circuit 18 and supplies a clock signal serving as a basis of timing information to the CPU 1.

Next, a first embodiment of the present invention will be described. FIG. 6 is a flowchart illustrating the operation of the CPU 1 in the first embodiment. In this flow, first, an initialization process is performed (step A1). In the initialization processing, the LED 20b is turned on.
In the switch selection mode, a rhythm selection standby state is set, and the LED 21b is turned on. The bank select switch 25 and the program select switch 26
The system enters a standby state in which a rhythm pattern can be specified. In the rhythm at this time, the bank A and the program 1 are set as initial states. Similarly, for the tone colors that can be produced by the keyboard 3, the bank A and the program 1 are set as initial states.
Therefore, the rhythm number “00” of the rhythm mode is displayed on the display unit 5. The rhythm mode at this time is the normal mode, and the LED 23b is turned on.

The start / stop switch 28
Is pressed, the accompaniment starts, and steps A2 to A
10 loops are repeatedly executed, and the chord tone data of the accompaniment information read out from the accompaniment information memory 7 in accordance with the chord progression is sent to the tone generator 8, and the chord display data of the accompaniment number, the accompaniment name and the accompaniment symbol are displayed on a liquid crystal display. Send it to the unit 5.

In this loop, when the rhythm selection switch is operated by the player, step A in FIG.
In 2, an accompaniment setting process corresponding to the operation is performed. When other switch operations are performed, step A3
Performs a setting process corresponding to the switch operation. Then, it is determined whether or not the chord is changed in the chord progression of the next performance information (step A4). When changing, the chord tone data is loaded from the accompaniment information memory 7 (step A5), and the chord display data of the accompaniment symbol corresponding to the chord tone data is loaded (step A).
6).

Next, a code display process for transmitting the code display data to the liquid crystal display unit 5 is performed (step A7). Then, a process of delaying the chord tone data is performed (step A8). In this case, the delay amount may be automatically set according to the tempo, or may be set by a player's operation. Next, the delayed chord tone data is transmitted to the tone generator 8.
(Step A9). Next, it is determined whether or not the power switch 20a has been turned off (step A10). If the power switch 20a has not been turned off, the process proceeds to step A2, and the above-described loop of each step process is continued. When the power switch 20a is turned off, a predetermined power-off process is performed (step A11).

Next, taking the actual chord progression as an example, the first
The operation of the embodiment will be described. FIG. 7 shows the contents displayed on the liquid crystal display unit 5 in the rhythm mode. In this example, the accompaniment number “00” and its accompaniment name “Club”
"Pop" is selected. In this case, when a certain code is changed to a code of Cm, FIG.
The display shown in is displayed. Next, when the code is changed to the Fm7 code, the display shown in FIG.

FIG. 8 is a diagram showing how the code changes in this example. FIG. 8A is a diagram showing the timing of the performance information, in which the code of Cm changes to the code of Fm7. FIG. 8 (2) shows that the code display data is
FIG. 9 is a diagram showing the timing of transmission of the data, and almost coincides with the timing of FIG. FIG. 8 (3) is a diagram showing the timing at which the chord tone data is transmitted to the tone generator 8. Data processing, D / A in tone generator 8
Since the signal processing in the sound system 15 and the sound system 16 is extremely fast as compared with the image display on the display unit 5, this timing can be regarded as coincident with the actual tone generation timing. FIG. 8D shows the display unit 5.
8 is a diagram showing the timing displayed in FIG. 8 and reacting to the visual sense of the player, and substantially coincides with the timing in FIG.

As described above, according to the first embodiment,
The CPU 1 constitutes sound control means and display control means,
The chord display data is transmitted to the display unit 5 as the display means, out of the performance information including the chord musical tone data which is sounding information progressing in accordance with the timing information and the chord display data which is display information corresponding to the chord musical tone data. After this, the chord tone data is sent to the tone generator 8 which is the tone generator. In this case, the chord tone data, which is the tone generation information, is transmitted to the tone generator 8 with a delay. As a result, by sending the display information before sending the sounding information, the sounding timing and the display timing seem to be the same in appearance. Therefore, it is possible to prevent the player from feeling the difference between the sounding timing of the sounding information and the display timing of the display information.

Next, a second embodiment of the present invention will be described. FIG. 9 is a flowchart illustrating the operation of the CPU 1 according to the second embodiment. In this flow, first, an initialization process is performed (step B1). The initialization process is the same as the first embodiment, and a description thereof will not be repeated. Also in this case, when the start / stop switch 28 is pressed, the accompaniment starts, the loop of steps B2 to B10 is repeatedly executed, and the chord musical tone data of the accompaniment information read out from the accompaniment information memory 7 in accordance with the chord progression is played. The code display data of the accompaniment number, accompaniment name, and accompaniment symbol is sent to the liquid crystal display unit 5.

In this loop, when the player performs a rhythm selection switch operation, an accompaniment setting process is performed in accordance with the operation (step B2). When another switch operation is performed, a setting process corresponding to the switch operation is performed in step B3. Then, it is determined whether or not the chord is changed in the chord progression of the next performance information (step B4). When the chord tone data is changed, the chord tone data related to the change is loaded (step B5), and the chord display data of the accompaniment symbol corresponding to the chord tone data currently being sounded is displayed. The chord display data of the accompaniment symbol is loaded (step B6). That is, two pieces of chord display data corresponding to the chord tone data to be generated next are displayed on the liquid crystal display unit 5 together with chord display data corresponding to the chord tone data currently being sounded.

Next, a code display process for transmitting the code display data to the liquid crystal display unit 5 is performed (step B7). Then, a code display data shift process for shifting the code display data is performed (step B8). Next, a chord tone generation process for sending chord tone data to the tone generator 8 is performed (step B9). Next, it is determined whether or not the power switch 20a has been turned off (step B10). If the power switch 20a has not been turned off, the process proceeds to step B2 to continue the loop of the above-described step processing. And power switch 2
When 0a is turned off, a predetermined power-off process is performed (step B11).

Next, taking the actual chord progression as an example, the second
The operation of the embodiment will be described. FIG. 10 shows the contents displayed on the display unit 5 in the rhythm mode. In this example, the accompaniment number “00” and its accompaniment name “Club”
"Pop" is selected. In this case, if the chord to be generated next is changed to Fm7 while the Cm chord is sounding, as shown in FIG.
At the same time, that is, the chord display data. In this case, the cursor is positioned on the currently sounding chord Cm and highlighted. When the sounding of the Fm7 chord starts, the accompaniment symbol of Fm7 is shifted right by the processing of step B8 in FIG.
As shown in (2), the accompaniment symbol of the chord Dm7 to be pronounced next is displayed on the left side.

As described above, according to the second embodiment,
The chord display data (accompaniment symbol), which is display information corresponding to the chord tone data that is generated next to the chord tone data that is the currently sounding pronunciation information, is sent to the liquid crystal display unit 5.
Therefore, since the accompaniment symbol of the chord to be sounded next is already displayed, it is possible to prevent the player from feeling the difference between the sounding timing of the sounding information and the display timing of the display information.

As a modification of the second embodiment, the left accompaniment symbol to be pronounced next may be blinked shortly before the chord changes. In this case, the timing at which the code changes can be easily recognized.

Next, a third embodiment of the present invention will be described. FIG. 11 is a flowchart illustrating the operation of the CPU 1 according to the third embodiment. In this flow,
First, an initialization process is performed (step C1). The initialization process is the same as the first embodiment, and a description thereof will not be repeated. In this case, start /
When the stop switch 28 is pressed, the accompaniment starts, and the loop of steps C2 to C10 is repeatedly executed.
The chord tone data of the accompaniment information read out from the accompaniment information memory 7 in accordance with the chord progression is sent to the tone generator 8, and the chord display data of the accompaniment number, the accompaniment name, and the accompaniment symbol are sent to the liquid crystal display 5. However, in this case, for the code display data of the accompaniment symbol, all the accompaniment symbols of a predetermined section of the performance information, in this embodiment, a section of one bar, are displayed on the liquid crystal display unit 5.

In the loop from step C2 to step C10, when the rhythm selection switch is operated by the player, an accompaniment setting process corresponding to the operation is performed (step C2). When another switch operation is performed, a setting process corresponding to the switch operation is performed in step C3. Then, it is determined whether or not the chord is changed in the chord progression of the next performance information (step C).
4). When the chord tone data is changed, the chord tone data relating to the change is loaded (step C5), and the chord display data of the accompaniment symbol corresponding to the chord tone data is loaded (step C6).

Next, a code display process for transmitting the code display data to the liquid crystal display unit 5 is performed (step C7). Then, a cursor display shift process of moving the cursor to the accompaniment symbol corresponding to the currently sounding chord musical tone data among the displayed accompaniment symbols of one measure is performed (step C).
8). Next, a chord tone generation process for sending chord tone data to the tone generator 8 is performed (step C9). Next, it is determined whether or not the power switch 20a has been turned off (step C10). If the power switch 20a has not been turned off, the process proceeds to step C2, and the above-described loop of each step process is continued. When the power switch 20a is turned off, a predetermined power-off process is performed (Step C11).

Next, taking the actual chord progression as an example, the third
The operation of the embodiment will be described. FIG. 12 shows the contents displayed on the liquid crystal display unit 5 in the rhythm mode. In FIG. 12A, the selected accompaniment number “0”
0 ", accompaniment name" Club Pop ", ongoing measure number" MEAS = 07 ", and a plurality of accompaniment symbols Cm, Fm7, Dm corresponding to the chord musical tone data of this measure.
7 are displayed at the same time. In this case, one bar has four beats, Cm has two beats, and Fm7 and Dm7 each have one beat. FIG. 12A shows the sounding timing of the first beat. Therefore, the cursor is positioned at the accompaniment symbol Cm corresponding to the currently sounding chord tone data.

Next, at the second beat, since the accompaniment symbol is Cm without change, the processing state of step C4 in FIG. 11 is maintained, and the display contents are as shown in FIG. 12 (2) and FIG. 12 (1).
Is the same as the display content. Next, at the third beat, since the accompaniment symbol changes from Cm to Fm7, the cursor shifts from Cm to Fm7 as shown in FIG.
Next, at the fourth beat, since the accompaniment symbol changes from Fm7 to Dm7, the cursor shifts from Fm7 to Dm7 as shown in FIG. 12 (4).

As described above, according to the third embodiment,
A plurality of chord display data (display information) corresponding to a plurality of chord tone data (pronunciation information) in a predetermined section of the performance information is sent to the liquid crystal display unit 5, and a chord display corresponding to the chord tone data currently sounding is displayed. The cursor is positioned on the data, and the code display data is highlighted and displayed. Therefore, since the accompaniment symbol of the chord to be sounded next is already displayed, it is possible to prevent the player from feeling the difference between the sounding timing of the sounding information and the display timing of the display information.

Next, in each of the above-described embodiments, the display switching timing is controlled when processing for sending display information is performed before sending sound information (this is referred to as "preceding display processing"). The parameters will be described.
There are the following four cases as the control parameters. 1, when the chord type difficulty is used as a control parameter, 2, when the time between chord change events is used as a control parameter, 3, when tempo is used as a control parameter, 4, when the pitch distance between chord roots is used as a control parameter.

First, a description will be given of a case depending on the degree of difficulty of the code type. FIG. 13 is a conceptual diagram of a chord difficulty level table in the accompaniment information memory unit 7, in which a chord management number is assigned to each chord and the chords are classified into difficulty groups. FIG. 14 is a flowchart in this case. In this process, the code management number is read in advance (step D1), and the code difficulty table of FIG. 13 is referred to (step D2). Next, a branching process is performed according to the degree of difficulty (step D3), and a preceding display time setting process corresponding to the branching is performed (step D4). Then, a preceding display process is performed (step D5). Thereafter, a process of shifting to the normal display is performed (step D6).

Therefore, the display switching timing is determined according to the difficulty level of the chord to be sounded next. If the chord has a high difficulty level, the chord display data corresponding to the chord tone data is advanced earlier. In this case, it is possible to prevent the player from further feeling the difference between the sounding timing of the sounding information and the display timing of the display information.

Next, a description will be given of a case depending on the time between code change events. FIG. 15 is a flowchart in this case. In this process, the delta time until the next event is measured simultaneously with the start of the sounding of the current chord (step E1). Next, a prefetch start time corresponding to the measured delta time is set (step E2). And
When the pre-reading start time has elapsed after the current chord starts to sound, pre-reading is started (step E3). Then, a preceding display process is performed (step E4). Thereafter, a process of shifting to the normal display is performed (step E5).

Therefore, the display switching timing is determined according to the delta time until the next event.
It is possible to prevent the player from further feeling the difference between the sounding timing of the sounding information and the display timing of the display information.

Next, the case based on the tempo will be described. FIG. 16 is a flowchart in this case. In this process, the average tempo value is calculated (step F).
1) The delta time is calculated, and a prefetch start time corresponding to the delta time is set (step F2).
At this time, assuming that the look-ahead time change coefficient is A, the delta time is represented by the following equation. Delta time = A × (recent average tempo value) × (standard look-ahead delta time) Here, the average tempo value is obtained by measuring a fixed interval tempo,
This is the average of the last five measured values. Next, when the pre-reading start time has elapsed after the current chord starts to sound, pre-reading is started (step F3). Then, a preceding display process is performed (step F4). Thereafter, a process of shifting to the normal display is performed (step F5).

Therefore, as in the case of the time between chord change events, the display switching timing is determined in accordance with the delta time until the next event. The difference from the display timing can be further prevented from being felt.

Next, a description will be given of a case where the pitch distance (pitch difference) between chord roots. FIG. 17 is a flowchart in this case. In this process, the root sound of the current chord is detected (step G1), and the root sound of the next chord is detected (step G2). And
Set the delta time according to the pitch distance between routes,
A prefetch start time corresponding to the delta time is set (step G3). Next, when the pre-reading start time is reached after the current chord starts to sound, pre-reading is started (step G).
4). Then, a preceding display process is performed (step G5).
Thereafter, processing for shifting to normal display is performed (step G).
6).

Therefore, as in the case of the time between chord change events, the display switching timing is determined according to the delta time until the next event. The difference from the display timing can be further prevented from being felt.

[0039]

According to the present invention, the transmission of the display information is performed before the transmission of the sounding information, so that the sounding timing and the display timing seem to be the same. Therefore, it is possible to prevent the player from feeling the difference between the sounding timing of the sounding information and the display timing of the display information.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a system configuration of an electronic musical instrument according to each embodiment.

FIG. 2 illustrates a switch unit and a liquid crystal display unit.

FIG. 3 is a diagram showing a timbre data memory map.

FIG. 4 is a diagram showing an accompaniment data memory map.

FIG. 5 is a diagram showing a waveform data memory map.

FIG. 6 is a flowchart showing the operation of the CPU according to the first embodiment.

FIG. 7 is a view showing contents displayed in a rhythm mode in the first embodiment.

FIG. 8 is a view showing a state of a code change in the first embodiment.

FIG. 9 is a flowchart illustrating an operation of a CPU according to the second embodiment.

FIG. 10 is a view showing contents displayed in a rhythm mode in the second embodiment.

FIG. 11 is a flowchart illustrating an operation of a CPU according to the third embodiment.

FIG. 12 is a view showing contents displayed in a rhythm mode in a third embodiment.

FIG. 13 is a conceptual diagram of a code difficulty table in a display switching process in each embodiment.

FIG. 14 is a flowchart of a display switching process based on the code difficulty level.

FIG. 15 is a flowchart of display switching processing based on the time between code change events.

FIG. 16 is a flowchart of a display switching process based on a tempo.

FIG. 17 is a flowchart of a display switching process based on a pitch distance between a chord and a root.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 3 Keyboard part 4 Switch part 5 Liquid crystal display part 7 Accompaniment information memory part 8 Music tone generation part

Claims (4)

[Claims] A musical tone generating means for generating a musical tone in response to the pronunciation information among performance information including pronunciation information proceeding according to timing information and display information corresponding to the pronunciation information; Display control means for transmitting the display information to display means, and after the display control means transmits the display information to the display means, sounding control for transmitting sound information corresponding to the display information to the musical tone generating means. Means, and an electronic musical instrument comprising: 2. The electronic musical instrument according to claim 1, wherein the sound generation control unit delays the sound generation information and sends the information to the musical sound generation unit. 3. The electronic musical instrument according to claim 1, wherein the display control means sends display information corresponding to pronunciation information to be pronounced next to currently-produced pronunciation information to the display means. 4. The display control means sends display information corresponding to a plurality of pieces of sound information in a predetermined section of the performance information to the display means, and emphasizes display information corresponding to currently sounding sound information. The electronic musical instrument according to claim 1, wherein the electronic musical instrument is displayed.