JP2747177B2 - Automatic musical instrument for electronic musical instruments - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic performance apparatus for an electronic musical instrument that performs a performance based on an automatic performance pattern stored for each rhythm name.

[0002]

2. Description of the Related Art Conventionally, an electronic musical instrument such as an electronic keyboard capable of performing an automatic performance is provided with an automatic rhythm accompaniment that accompanies a rhythm such as rock and pop, and accompaniment with various chords (chords). Some have an automatic accompaniment function such as an automatic chord accompaniment.

In an electronic keyboard having this kind of automatic accompaniment function, various automatic performance patterns (automatic performance data) for each rhythm name are stored in a memory thereof, and a performance is performed based on the automatic performance data. Has been done. When performing automatic accompaniment, the automatic accompaniment sound of a specific measure is repeatedly performed based on the automatic performance data such as the rhythm and chord.

When performing automatic accompaniment, it is necessary to set the accompaniment speed (tempo).
By operating a tempo setting switch provided on the operation panel of the electronic keyboard, the tempo is set prior to the performance.

[0005]

However, in the case of an electronic keyboard or the like having such an automatic accompaniment function, when playing a song whose rhythm changes in the middle, or continuously playing songs having different rhythms. When performing a so-called medley performance, it is not always suitable.

That is, when the rhythm changes during the performance as described above, or when a medley performance is performed, the pattern of the performance changes when the rhythm changes. Because the tempo of the performance does not change (as it is), the listener may feel uncomfortable not only because of the change in the performance pattern but also because of the mismatch between the rhythm and the tempo.

As a countermeasure, when changing the rhythm, it is conceivable to specify the No. (type) of the rhythm to be changed, operate a switch for instructing the rhythm change, and further operate a switch for setting the tempo. It was practically difficult to operate such a complicated switch during the operation because it hindered concentration on the performance.

An object of the present invention is to provide an automatic musical instrument playing apparatus for an electronic musical instrument capable of easily performing a comfortable play even when the rhythm is changed.

[0009]

According to the present invention for achieving this object, as shown in FIG. 1, automatic performance data is stored on an automatic performance data storage means M1 based on automatic performance data for each rhythm name. In an automatic musical instrument of an electronic musical instrument for performing a performance, a tempo storage means M2 for storing a tempo of an automatic performance for each rhythm name, and a rhythm change for instructing a change from a current rhythm to another rhythm during the automatic performance. When a rhythm change is instructed by the instruction means M3 and the rhythm change instruction means M3, the rhythm pattern is replaced with the rhythm pattern up to that time.
Fill-in insertion means for inserting a fill-in pattern
M4, and a fill impeller by the fill in insertion means M4.
During the performance of the turn, the other
Change gradually toward the tempo of the
At the end of the performance of the turn, the tempo of the other rhythm
And tempo change means M5 to change all at once, the fill-in
After the performance of the fill-in pattern by the inserting means M4
In the automatic performance data storage means M1 on the basis of automatic performance data for other rhythms stored in, automatic electronic musical instrument characterized by the Turkey with rhythm changing means M6 for performing play other rhythms, the The performance device is the gist.

[0010]

Here, the electronic musical instrument includes, for example, an electronic keyboard. Examples of the rhythm name include rock, pop, and jazz. Further, the degree of tempo change at the time of rhythm change is, for example, a value obtained by dividing a tempo difference by a predetermined time, that is, a difference between the tempo before the change and the tempo after the change (△ TP).
Is divided by the time (ΔT) at which a fill-in pattern is inserted (for example, for one bar) (ΔTP / ΔT), and the tempo may be gradually changed as a change amount per unit time. Alternatively, as a simpler method, a change amount per predetermined unit time is determined from a map or the like according to a difference in tempo, and the tempo is gradually changed based on the change amount. The tempo may be switched to a tempo suitable for the performed rhythm.

[0012]

In the electronic musical instrument automatic playing apparatus of the present invention having the above-mentioned structure, when the rhythm change instruction means M2 instructs the change from the current rhythm to another rhythm, the file is reset.
Rhythm pattern by the insertion means M4
Instead, a fill-in pattern is inserted and fill-in
The performance of the turn is performed.

[0013] Then, the tempo changing means M5 outputs the tempo.
From the current tempo to the tempo of another rhythm gradually
And the performance of the fill-in pattern ends.
And the tempo of other rhythms is changed at once. In addition,
After the performance of the play-in pattern, the rhythm changing means M
6 allows other rhythms to be performed at an appropriate tempo.
Will be

That is, according to the present invention, when an instruction to change the rhythm is issued, the tempo of the performance is automatically switched in accordance with the rhythm when the rhythm is changed, instead of simply switching the rhythm . Moreover, in that case, by performing the switching of the tempo slowly over a period of time during a performance of the fill-in pattern, gradually there is no line to increase, down tempo, for example, in proportion to the time, yet the fill-in pattern
At the end of the performance, the tempo of the other rhythm is changed at once
Therefore, it is possible to correct a tempo error, thereby greatly reducing discomfort when changing the rhythm.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of the electronic musical instrument of the present invention will be described below. The electronic keyboard of the present embodiment, when changing the rhythm, gradually changes the tempo during the performance of the fill-in pattern in accordance with the change in the rhythm ,
At the end of the performance of the fill-in pattern,
And performs a modification, FIG. 2 shows an appearance of an electronic keyboard as an embodiment.

As shown in FIG. 2, the electronic keyboard 1
Has a keyboard 3 on which a number of keys 2 are arranged, and an operation panel 4 on which a number of switches 5 to 10 and a display 11 are provided. The switches 5 on the operation panel 4
Reference numeral 10 denotes a power switch 5, a number of rhythm setting switches 6 for setting the rhythm, a rhythm start switch 7 for instructing the start of the rhythm performance, a rhythm stop switch 8 for stopping the rhythm performance, and a change of the rhythm. , A pattern switch 10 for selecting an intro, basic, fill-in, or ending performance pattern, and a tempo setting switch 17 for setting a tempo.

The rhythm setting switch 6 is provided for each rhythm name such as rock or pop. The rhythm to be played is selected according to the on / off state of the switch 6. The rhythm change switch 9 is a switch that is pressed when changing the rhythm. When this switch is pressed, the rhythm is changed to the rhythm set by the rhythm setting switch 9 and the performance is performed.

The tempo setting switch 17 is a switch for manually setting the tempo in advance, and includes an up switch 17a for increasing the tempo value and a down switch 17b for decreasing the tempo value. When the tempo is automatically changed, the tempo setting switch 17 need not be used.

Next, FIG. 3 shows a block diagram of an electric configuration of the electronic keyboard 1. As shown in FIG. 3, a main control portion of the electronic keyboard 1 is a CPU 1 that performs various calculations.
2, a RAM 13 for temporarily storing data such as a tempo successively changing value @TTP described later, a program memory (ROM) 14 for storing a control program, and an automatic performance pattern such as a fill-in pattern stored for each rhythm and corresponding to the rhythm. An automatic performance data memory 15 also stores a tempo, a tone waveform memory 16 that stores a tone waveform, a keyboard interface 20, a panel interface 21, a tone generation circuit 22, and the like. These are connected via a data bus 23. The automatic performance data memory 15 stores a rhythm number for designating a rhythm type together with the automatic performance pattern.

The keyboard 3 is connected to the keyboard interface 20, the switches 6 to 10 of the operation panel 4 are connected to the panel interface 21, and the speaker 26 is connected to the tone generation circuit 22 via an amplifier 25. It is connected. Next, the data structure of an automatic performance pattern such as a fill-in pattern stored in the automatic performance data memory 15 will be described.

In this embodiment, for example, as an automatic performance pattern (fill-in pattern) of a fill-in inserted during the performance, two fill-in patterns are stored for each rhythm name such as rock and pop. As shown in FIG. 4, the fill-in pattern stores a control program for specifically instructing sound generation.
[KEY No.] indicating the number of a sounding key (pitch data) and the timing of sounding (sounding timing data) as data indicating one sound consisting of 4 bytes [STEP
TIME], indicating the length of the sound (sound time data) [GATE
TIME], indicating the sound intensity (volume data) [VELOCIT
Y] is sequentially stored for each tone. After a plurality of sound data, 2-byte data (measure end data) indicating a break between measures is arranged, and at the end of the data, 2-byte data (pattern end data) indicating the end of the fill-in data is arranged. Have been.

Next, control processing performed by the electronic keyboard 1 of the present embodiment having the above-described configuration will be described in detail with reference to flowcharts of FIGS. 5 to 7 and a timing chart of FIG. 5 shows a main routine of control, FIG. 6 shows a panel process, FIG. 7 shows an automatic performance (auto play) process, and FIG. 8 shows a timing chart of a process operation when the rhythm is switched. I have.

In this processing, when changing the rhythm, the fill-in pattern is inserted and the tempo of the performance is changed in accordance with the changed rhythm. In particular, the tempo is gradually increased during the performance of the fill-in pattern. To set the tempo suitable for the next rhythm.

First, as shown in FIG.
When the power switch 5 is turned on, a normal initialization process is performed in step 100 (hereinafter, step is shown as S), and in S200, a panel process corresponding to the on / off of the switches 6 to 10 is performed. Then, in S300, automatic performance processing for actual sound generation is performed. Hereinafter, each process will be sequentially described.

First, the panel processing will be described. FIG.
As shown in FIG.
In order to detect the on / off state of the panel 10, a panel scan is performed in S202. Then, in S204, it is determined whether or not to start the rhythm performance. That is, it is determined whether the rhythm to be played is selected by the rhythm setting switch 6 and the rhythm start switch 7 is turned on. Here, if a positive determination is made, the process proceeds to S206, while if a negative determination is made, the process proceeds to S210.

In S206, the head address of the rhythm stored in the automatic performance data memory 15 is set in order to perform the rhythm selected by the rhythm setting switch 6, and in S208, the rhythm performance flag is set. This is set, and the process ends once. On the other hand, in S210, which proceeds after making a negative determination in S204, it is determined whether or not the rhythm performance has been stopped based on whether or not the rhythm stop switch 8 has been pressed. If an affirmative determination is made here, the process proceeds to S212, in which the rhythm performance flag is cleared, and this process is temporarily terminated. If a negative determination is made, the process proceeds to S214.

In S214, it is determined whether or not an instruction to change the rhythm has been issued. That is, it is determined whether the rhythm to be changed is selected by the rhythm setting switch 6 and the rhythm changing switch 9 is turned on. Here, if a positive determination is made, the process proceeds to S216, while if a negative determination is made, the present process is temporarily ended.

In S216, it is determined whether or not a rhythm performance is currently being performed based on the presence or absence of a rhythm performance flag. If the determination is affirmative, the process proceeds to S218. If the determination is negative, the process proceeds to S224. In S218, the difference between the current tempo and the next tempo (preset tempo) is compared to determine a tempo difference ΔTP, and in S220, the tempo difference ΔTP is divided by a predetermined value (for example, 96). Then, a value for sequentially changing the tempo (tempo sequentially changed value) 値 TTP is obtained. Here, the tempo successively changing value @TTP is the data reading timing (1/2 of a quarter note) described later.
In step 4), the tempo difference △ TP
Is divided by the predetermined value 96 (= 24 × 4) corresponding to one measure (for four quarter notes) of the fill-in pattern.

In the following 222, the start address of the fill-in pattern is set in order to insert the fill-in pattern (of the rhythm currently being played) during the performance of the rhythm.
At 224, the rhythm number is changed according to the pressed rhythm setting switch 6 (to change the rhythm).

In the following S228, a rhythm change flag for changing the rhythm is set, and the present process is ended once. That is, the processes of S202 to S226 are performed by turning on / off the rhythm setting switch 6, the rhythm start switch 7, the rhythm stop switch 8, the rhythm change switch 9, and the like. Is set or cleared, and the tempo sequential change value ΔTTP used for changing the rhythm tempo is set.

Next, the auto play processing performed in S300 will be described. As shown in FIG. 7, in the auto play process, in S302, it is determined whether or not it is the data read timing based on whether or not it is the timing of 1/24 of the current quarter note. If an affirmative determination is made here, the process proceeds to S304. On the other hand, if a negative determination is made, the present process is temporarily terminated.

At S304, it is determined whether or not a rhythm change instruction has been issued, based on whether or not a rhythm change flag has been set. If the determination is affirmative, the process proceeds to S306. If the determination is negative, the process proceeds to S310. move on. In S306, it is determined whether or not the current tempo value is the same as the preset value of the tempo according to the changed rhythm. If the determination is affirmative, the process proceeds to S310; if the determination is negative, S308 is performed. Proceed to.

In S308, since the current tempo has not reached the tempo of the changed rhythm, a process of changing the tempo value is performed. That is, the S2 is added to the current tempo.
A process for adding the tempo sequential change value ΔTTP calculated in step 20 is performed. If the tempo after the change is smaller than the tempo before the change, the tempo sequential change value ΔTTP is subtracted.

That is, the processes of S302 to S308 are processes in which the current tempo is compared with the tempo of the changed rhythm, and the tempo is sequentially increased to gradually approach the tempo of the changed rhythm. . In subsequent S310, it is determined whether or not the timing stored in the STEP data (shown in FIG. 4) matches the value of the play counter for reading data.
Proceed to 12. On the other hand, if a negative determination is made, the process proceeds to S314,
The play counter is incremented, and the present process ends once.

In S312, the automatic performance data memory 15
The performance data (shown in FIG. 4) is sequentially read out, and the process proceeds to S320. In S320, it is determined whether or not the read data is the bar end data indicating the end of one bar. If it is determined that the data is not the end of one bar, the process proceeds to S322.
Proceed to.

In step S322, the tone generation circuit 22 and the like are driven based on the read performance data of one tone to perform normal tone generation processing. In the following S324, 4 is added to the read address to advance the address in order to read the data of the next musical tone, and in the following S326, the STEP data of the next musical tone is set, and the process returns to S306.

That is, the processes of S310 to S326 are processes for sequentially reading out the tone data and generating the tone. If it is determined in S320 that the end of one measure has been reached, it is determined in S328 whether or not to change the rhythm, based on whether or not a rhythm change flag has been set. If a positive determination is made in S3
The process advances to S30, and if a negative determination is made, the process advances to S332.

In step S330, the start address of the rhythm to be changed is set in order to perform the performance with the rhythm to be changed.
At S334, the rhythm change flag is cleared because the process for instructing the rhythm change has been completed. In the following S336, a preset tempo corresponding to the changed rhythm is set in order to completely match the tempo according to the changed rhythm, that is, to correct an error due to the sequential change of the tempo. Then, the play counter is cleared, and the process returns to S306.

On the other hand, in S332, in which a negative decision is made in S328, the rhythm is not changed. In order to perform with the same rhythm as the previous performance, the start address of the same rhythm as in the previous time is set. move on. In other words, the processes of S328 to S336 are processes for designating the type of rhythm to be performed according to the presence or absence of the rhythm change flag and for completely adjusting the tempo in accordance with the changed rhythm.

As described above, in the electronic keyboard 1 of this embodiment, as shown in FIG. 8, when the rhythm is selected and the rhythm change switch 9 is pressed when the performance is performed in the first rhythm. At the timing when the switch 9 is released (time t ₁ ), the performance by the fill-in pattern is executed. Thereafter, the performance of the fill-in pattern is stopped at the timing (time t ₂ ) at the beginning of the next bar of the fill-in pattern, and instead, the performance with the changed rhythm is performed.

At the same time, from the timing when the switch 9 is pressed (time t ₁ ), the current tempo is gradually changed by the tempo sequential change value ΔTTP (increased in the present embodiment), and the rhythm is increased. Change timing (time t
_{In 2} ), the tempo is changed to a tempo suitable for the new rhythm type.

That is, in the present embodiment, when the rhythm is changed, simply pressing the rhythm change switch 9 automatically performs the performance according to the fill-in pattern, and then the sound is suitable for the changed rhythm. The rhythm is played at the set tempo, but when the fill-in pattern is played, the tempo changes gradually to match the changed tempo. Even in the case of, there is a remarkable feature that an excellent performance can be performed with little discomfort.

In order to change the rhythm, it is only necessary to press the rhythm change switch 9, so that the operation is extremely simple, so that the user can concentrate on the performance.
In that respect, there is an advantage that you can perform excellently. In particular, it is very difficult for a beginner to perform complicated switch operations at the same time as playing, but using this apparatus makes it easy to play.

It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be implemented in various modes within the scope of the present invention. For example, one or more values are stored in advance as the tempo sequential change value △ TTP,
It may be set appropriately according to the difference in tempo. If the tempo is changed successively, the tempo may be slightly different from the tempo suitable for the changed rhythm at the time the rhythm is changed. Switch.

[0045]

As described in detail above, in the electronic musical instrument automatic performance apparatus of the present invention, when a change from the current rhythm to another rhythm is instructed during the automatic performance by the rhythm change instructing means, the tempo is changed. The means can gradually change the performance tempo to another rhythm tempo, and the rhythm changing means can perform another rhythm at the changed appropriate tempo.

That is, when a change of rhythm is instructed, the performance is not simply switched, but is gradually changed to an appropriate tempo according to the rhythm, and the performance is performed. There is a feature that the feeling of strangeness due to the switching can be reduced and the operation is extremely simple.

In particular, in the present invention, when changing the rhythm,
Insert the fill-in patterns, change the tempo gradually during the performance of the fill-in pattern, moreover fill-in
Change to the rhythm tempo at once at the end of the pattern performance
Therefore, there is an advantage that the tempo error can be corrected, and the sense of incongruity when the rhythm is changed is further reduced.

[Brief description of the drawings]

FIG. 1 is an illustration of a basic configuration of the invention of claim 1;

FIG. 2 is a plan view showing the appearance of the electronic keyboard of the embodiment.

FIG. 3 is a block diagram of an electronic keyboard system.

FIG. 4 is an explanatory diagram showing a data structure of an automatic performance pattern.

FIG. 5 is a flowchart showing a main routine of automatic performance.

FIG. 6 is a flowchart showing panel processing.

FIG. 7 is a flowchart showing an auto play process.

FIG. 8 is a timing chart showing the timing of each process.

[Explanation of symbols]

M1 automatic performance data storage means M2 tempo storage means M3 rhythm change instructing means M4 fill-in insertion means M5 tempo change means M6 rhythm change means 1 electronic keyboard 4 operation panel 6 rhythm setting switch 7 rhythm start Switch 8: Rhythm stop switch 9: Rhythm change switch 10: Pattern switch 17: Tempo setting switch

Claims (1)

(57) [Claims] An automatic performance device for an electronic musical instrument that performs automatic performance based on automatic performance data for each rhythm name stored in automatic performance data storage means, wherein a tempo for storing a tempo of the automatic performance for each rhythm name is provided. storage means, in the automatic performance, and rhythm change instruction means for instructing a change from the current rhythm to another rhythm, when a change of the rhythm dictated by the rhythm change instruction means, the rhythm pattern so far Filui on behalf
Fill-in inserting means for inserting a fill -in pattern, and playing of a fill-in pattern by the fill-in inserting means.
During that time, the tempo of the other
Change gradually toward the fill-in pattern
At the same time as the tempo of the other rhythm
And tempo change means that, Starring of the fill-in pattern by the fill-in insertion means
After Kanade completion, on the basis of the automatic performance data storage means automatic performance data for other rhythms stored in, automatic electronic musical instrument characterized by the Turkey with a rhythm changing means for playing other rhythms, the Performance equipment.