JPH0590593U - Electronic musical instrument - Google Patents

Abstract

(57) [Abstract] [Purpose] To realize an electronic musical instrument that allows the player to insert a fill-in pattern (a double-handed hand) without resting his hand. [Structure] When a special combination (a combination in which a chord cannot be detected) is made by a key combination for designating a chord, the pattern to be played next is determined based on the content and switched.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electronic musical instrument having a function of performing automatic accompaniment based on a pattern stored in advance, and particularly to an electronic musical instrument capable of inserting a special performance such as fill-in performance.

[0002]

[Prior Art]

 Conventional electronic musical instruments with automatic accompaniment perform accompaniment by repeatedly playing a pattern (normal pattern) consisting of one measure or several measures. ) Has been put into practical use with a fill-in function that changes the accompaniment.

In order to instruct the timing of performing this fill-in performance, a conventional electronic musical instrument is provided with a specific operator such as a file-in switch, and when this operator is operated, a normal pattern is temporarily changed to a fill-in pattern. It is designed to switch.

[0004]

[Problems to be solved by the device]

 However, for example, in the case of a keyboard-type electronic musical instrument, the specific controls were generally provided on the operation panel slightly away from the keys, so in order to insert a fill-in pattern There is a drawback that the performance is interrupted because the player has to remove the released hand from the key and operate the specific operator. In addition, there is a drawback in that considerable skill is required to operate the operating elements without interrupting the performance.

An object of the present invention is to provide an electronic musical instrument in which a special performance pattern can be inserted without releasing a hand from a performance operator such as a keyboard.

[0006]

Means for Solving the Problems The present invention is a pitch designated pair detecting means for detecting a combination of a plurality of pitches designated simultaneously by a performance input operator, and the pitch designated pair detecting means. A chord is detected based on a combination of multiple pitches, and an automatic accompaniment that repeats a normal performance pattern based on the chord for automatic accompaniment and a specified combination is detected by the pitch-specified pair detection means. Special pattern instructing means for instructing the automatic accompaniment means to temporarily play the special performance pattern.

Here, to show some of the embodiments of the present invention, the specific combination detected by the pitch specified set detection means may be one in which no chord name is assigned.

Further, the specific combination may be further divided into several pieces, and a plurality of special patterns may be designated and divided.

Further, the special pattern may be a fill-in pattern or an ending pattern.

[0010]

[Action]

 In the electronic musical instrument of the present invention, a chord is detected based on a combination of pitches specified by the performance input operator, and automatic accompaniment based on the chord is performed. At this time, the automatic accompaniment means is instructed to temporarily play the special performance pattern when a specific combination is detected from the content of the pitch based on the content of the pitch. The special performance pattern may be, for example, a fill-in pattern. Further, the specific combination may be a combination in which a chord cannot be detected, for example. Combinations that cannot detect chords can be realized by simple operations such as the player opening his palm and pressing the keyboard.

[0011]

Embodiments An electronic musical instrument according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an electronic musical instrument which is an embodiment of the present invention. In this electronic musical instrument, the CPU 1 controls the entire operation, but the automatic accompaniment device 8 has a controller 11 having a CPU built-in, and the automatic accompaniment operation control is separately performed by this controller.

A ROM 3, a RAM 4, a keyboard 5, a switch group 6, a tone generator 7 and an automatic accompaniment device 8 are connected to the CPU 1 via a bus 2. The outputs of the tone generator 7 and the automatic accompaniment device 8 are mixed by the mixer 9 and then input to the sound system 10. The ROM 3 stores a program for operation control as shown in the flowchart described later. Various registers are set in the RAM 4. The keyboard 5 has about 61 keys (5 octaves). The switch group 6 includes a switch for selecting the type of rhythm, a switch for starting / stopping the automatic accompaniment, and the like.

The CPU 1 checks the events of the keyboard 5 and the switch group 6 and performs an operation control process using a register in the RAM 4 according to a program stored in the ROM 3 to give various instructions to the tone generator 7 and the automatic accompaniment device 8. Give a signal. The CPU 1 gives the tone generator 7 a key-on signal for instructing the start of sound generation, a key-on signal for instructing the end of sounding as well as a key code signal for instructing the pitch, etc. A start signal for instructing start, a stop signal for instructing end of automatic accompaniment, a rhythm designating signal for designating various rhythms, a pattern designating signal for designating any of the four types of patterns described later, a chord designating signal, etc. are given.

When the tone code generator 7 receives a key code signal and a key code signal from the CPU 1, the tone generator 7 starts to generate a tone signal having a pitch corresponding to the given key code, and a tone signal of the tone signal currently being generated together with the key off signal. When the key code corresponding to high is given, the generation of the musical sound is terminated.

The automatic accompaniment apparatus 8 is provided with a controller 11, a memory 12, and an accompaniment tone generator 13. When the start signal and the pattern designation signal are input from the CPU 1 of the main body to the controller 11, the controller 11 reads the pattern data of the designated pattern from the memory 12 and inputs the pattern data to the accompaniment tone generator 13. As a result, the tone generator 13 forms a musical tone signal and an automatic accompaniment performance is performed. Also, when a stop signal is given from the CPU 1, the automatic accompaniment ends immediately. The memory 12 stores four types of patterns, that is, a normal pattern, a variation pattern, a fill-in pattern, and an ending pattern for a plurality of types of rhythms. Here, the normal pattern is a normal accompaniment pattern that is repeatedly played. The variation pattern is a slightly complicated pattern of the normal pattern and is also played repeatedly. The fill-in pattern is a pattern that is played at the time of fill-in (so-called hand). When this pattern is selected, this pattern is played once and then returns to the normal pattern. The ending pattern is the pattern that is played at the end of the song, and after playing this pattern once, the song (auto accompaniment) ends.

3 and 4 are flowcharts showing the operation of the electronic musical instrument. Figure 3 shows the main routine. When the power of the electronic musical instrument is turned on, the initial setting operation is first executed (n1). This operation is an operation such as resetting a register or setting preset data. After that, the key event, the start / stop switch on-event detection (n2, n3), and the other processing (n4) are repeatedly executed. When there is a key event, the key event operation is executed (n5), and when there is a start / stop event, automatic accompaniment start / stop processing is executed (n6).

FIG. 4 is a flowchart showing a key event processing operation. When a key event occurs, it is determined whether or not the key event is in the left range, which is the accompaniment range. If not, that is, in the case of the right range, the sounding / silence processing operation (n11) corresponding to the normal key-on / key-off signal is executed.

If it is in the left key range, a chord is detected based on the key combination newly generated by the key event (n12). This chord detection may be performed using a conventionally known method (for example, a chord table method). When a chord is detected, the root note of the chord is set in the RT register, and the chord type (minor, sevens, etc.) is set in the TP register (n14). These RT and TP data are output to the automatic accompaniment device as chord specifying signals (n15). The automatic accompaniment apparatus receiving this data adjusts the key code of the accompaniment pattern data read out based on this data so as to match the detected chord and automatically accompanies.

On the other hand, when a chord is not detected in the chord detection operation (n12), it is determined that the key combination is a special key combination and the accompaniment pattern is changed instead of the designation of the chord (n13), n16. Proceed to. At n16, the determination table shown in FIG. 2 is searched based on the lowest tone key and the second low tone key among the turned-on keys. As a result, the pattern to be played next is determined. The data designating the indexed pattern is output to the automatic accompaniment device (n17). Based on this data, the automatic accompaniment device starts accompaniment of a new pattern from the beginning of the next bar.

FIG. 2 is a diagram showing a determination table set in the ROM 3. This judgment table is for judging the change of the accompaniment pattern based on the key operation of the left hand. The chord specified by the left hand is detected by various conventionally known methods. However, when a key-on with a combination that does not apply to any of them is performed (for example, pressing the keyboard with the palm), the pattern is changed at n13 in FIG. This table is searched when it is determined to be an instruction. Then, the pattern to be played next is selected as follows depending on the combination of the lowest note and the second low note of the combination of white keys and black keys.

(1) When the lowest tone and the second low tone are both white keys: It is determined from the determination table that the instruction is a normal pattern performance instruction, and the automatic accompaniment apparatus 8 is given a normal pattern instruction signal. That is, if the normal pattern is being played in the automatic accompaniment device 8, the normal pattern is continuously played from the next bar without any change. If the variation pattern is being played, the normal pattern is played from the next bar, and the normal pattern is played continuously thereafter unless there is an instruction to play another pattern. If the fill-in pattern is being played, the normal pattern is started when the fill-in pattern is finished, and the normal pattern is played thereafter unless another pattern is instructed to play. If the ending pattern is playing, the automatic accompaniment ends when the ending pattern is played, and the normal pattern is not played.

(2) When the lowest tone is the white key and the second low tone is the black key It is determined by the determination table that the variation pattern performance instruction is given, and the variation pattern instruction signal is given to the automatic accompaniment device 8. That is, if the automatic accompaniment device 8 is playing a normal pattern, the variation pattern is played from the next bar, and the variation pattern is played continuously thereafter unless another pattern is instructed to play. It Also, if the variation pattern is playing, the variation pattern continues to play from the next measure without any change. If the fill-in pattern is playing, the variation pattern starts playing when the fill-in pattern finishes, and the variation pattern continues to play unless there is an instruction to play another pattern. If the ending pattern is playing, the automatic accompaniment ends when the ending pattern is played, and the variation pattern is not played.

(3) When the lowest tone is the black key and the second low tone is the white key: It is determined by the determination table that the fill-in pattern performance instruction is given, and the fill-in pattern instruction signal is given to the automatic accompaniment device 8. That is, if the automatic accompaniment device 8 is playing the normal pattern, the fill-in pattern is played from the next bar, and when the fill-in pattern is played once, the normal pattern is played again. The normal pattern continues to be played unless there is an instruction to play another pattern. If the variation pattern is playing, the fill-in pattern will be played from the next measure, and once the fill-in pattern has finished playing once, the variation pattern will be played again. The variation pattern continues to play, unless Also, if the fill-in pattern is being played, the instruction of the fill-in pattern again will be invalid, and the instruction of the new pattern will not be given. Therefore, if the normal pattern was played when the fill-in pattern being played was instructed, the normal pattern is played, and if the variation pattern was played, the variation pattern is returned to and played. After that, the normal pattern or variation pattern continues to be played unless there is an instruction to play another pattern. If the ending pattern is being played, the automatic accompaniment ends when the ending pattern is finished playing, and the fill-in pattern is not played.

(4) When the lowest tone and the second low tone are both black keys: It is determined by the determination table that the ending pattern performance instruction is given, and the ending pattern instruction signal is given to the automatic performance device 8. That is, if the automatic accompaniment device 8 is playing a normal pattern, the ending pattern is played from the next bar, and thereafter, the ending pattern is played once regardless of whether or not there is a playing instruction of another pattern. The automatic accompaniment ends automatically when played as specified. Also, if the variation pattern is being played, the ending pattern will be played from the next measure, and thereafter, the ending pattern will be played once, regardless of whether or not there is an instruction to play another pattern. The automatic accompaniment ends automatically. Also, if the fill-in pattern is playing, the ending pattern is played when the fill-in pattern finishes, and after that, the ending pattern is played automatically once the ending pattern is played once, regardless of whether or not there is an instruction to play another pattern. Automatically ends. If the ending pattern is playing, the automatic accompaniment ends when the ending pattern is played, and the ending pattern playing instruction this time is ignored.

In the above embodiment, the specific combination is a combination in which a chord cannot be detected, but a combination for instructing a pattern change regardless of whether or not a chord can be detected may be determined in advance. In this case, it is desirable to use a specified combination of chords that are specified infrequently.

[0027]

[Effect of the device]

 As described above, according to the present invention, a special performance pattern such as a fill-in pattern can be specified as it is without releasing the hand from a performance operator (for example, a keyboard). The advantage is that you can easily enjoy changing and sophisticated performances.

[Brief description of drawings]

FIG. 1 is a block diagram of an electronic musical instrument that is an embodiment of the present invention.

FIG. 2 is a diagram showing a determination table of the electronic musical instrument.

FIG. 3 is a flowchart showing the operation of the electronic musical instrument.

FIG. 4 is a flowchart showing the operation of the electronic musical instrument.

Claims (1)

[Scope of utility model registration request] 1. A pitch-specified pair detecting means for detecting a combination of a plurality of pitches simultaneously specified by a performance input operator, and a combination of a plurality of pitches detected by the pitch-specified pair detecting means. An automatic accompaniment means for detecting a chord and repeating an ordinary performance pattern based on the chord to perform an automatic accompaniment; An electronic musical instrument comprising special pattern designating means for designating a pattern to be played temporarily.