JPH0673798U - Electronic musical instrument - Google Patents

Abstract

(57) [Abstract] [Purpose] Acquire an accompaniment pattern suitable for a specified rhythm without using an extra chord switch lever. [Structure] The accompaniment pattern ROM stores accompaniment patterns corresponding to 12 kinds of rhythms, and further 4 kinds are stored for each kind.
Seed accompaniment pattern [5] Is memorized. Of these, the accompaniment pattern corresponding to the shaded part is to emit chord sounds as continuous sounds,
Other than that, the chord sound is emitted as an intermittent sound. Therefore, the type of rhythm is specified, and the accompaniment pattern corresponding to the specified type Depending on the specified rhythm type, chord sounds may be generated as intermittent sounds,
It can be generated as a continuous sound.

Description

[Detailed description of the device]

[0001]

[Technical Field of Device]

 The present invention relates to an electronic musical instrument with automatic accompaniment.

[0002]

[Prior art]

 Conventionally, electronic musical instruments have been put into practical use in which the electronic musical instrument itself automatically accompanies the performance of the performer by using a memory stored in the electronic musical instrument so that even a beginner can easily perform. There is. For example, as shown in FIG. 1, a chord tone (chord) of the accompaniment tone is continuously emitted regardless of the rhythm tone (CONTINUOUS) mode, and the chord tone (chord) is changed to the rhythm tone. It was necessary to manually switch to the interlocking (RHYTHMIC) mode by the cord switching lever 1.

[0003]

[Problems of conventional technology]

 However, depending on the type of rhythm, it may not be necessary to continuously emit chord sounds, and in practice it is practical to put chord change lever 1 in CONTINUOUS mode to continuously emit chord sounds. It was not very necessary.

[0004]

[Purpose and points of idea]

 The present invention has been made based on the above circumstances, and its purpose is to obtain an accompaniment pattern suitable for a specified rhythm type without separately providing such an extra code switching lever or the like. Therefore, in the present invention, as one of a plurality of accompaniment patterns stored according to the type of rhythm, there are both an accompaniment pattern for continuously emitting chord notes and an accompaniment pattern for intermittently emitting chord notes. There are some types that have an accompaniment pattern that is intermittently emitted, and a type that has a rhythm suitable for a continuous tone is selected to automatically perform continuous emission of chord sounds. .

[0005]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. A keyboard 11 composed of a plurality of keyboards is arranged in front of the upper surface of the electronic musical instrument of the present invention, and a switch lever of the electronic musical instrument has a select lever 12 (Fig. 2) and an accompaniment pattern designating unit 13 (Fig. 3). The rhythm designating section 14 (FIG. 4) is arranged.

In the OFF mode, the select lever 12 plays a chord sound on the keyboard 11 (FIG. 5) when playing a normal chord without automatic accompaniment, and in the FINGERED mode. When performing automatic accompaniment by operating, in the ON mode, switching is performed when automatic accompaniment is performed with one finger, two fingers, or three or more fingers.

As shown in FIG. 3, in the accompaniment pattern designating section 13, a backing lever 13A and a base lever 13B are arranged in order. With these two levers 13A and 13B, two types of accompaniment patterns, backing and bass, can be output.

[Outer 1] Depending on the accompaniment pattern, the chord sound can be continuously emitted regardless of the rhythm sound, or the chord sound can be output intermittently in continuation with the rhythm sound. Various pronunciation modes can be switched

As shown in FIG. 4, the rhythm designating section 14 includes a rhythm key 14A composed of seven lower keys, a start / stop key 14B and a synchro key 14C on the right side thereof, an accompaniment knob 14D on the upper row, and a rhythm knob 14E. And tempo knob 14F. The rhythm key 14A switches the accompaniment rhythm pattern to 12 patterns such as rock, pops, disco, 16 beats, swing, bossa nova, samba, waltz, etc. The remaining 6 keys can be pressed or released by pressing or releasing the rightmost key. Each can be switched to two types. The start / stop key 14B is used to start and stop only the automatic accompaniment, and the synchro key 14C is used to start the automatic accompaniment along with the performance. The accompaniment knob 14D controls the volume of the accompaniment sound, the rhythm knob 14E controls the volume of the rhythm sound, and the tempo knob 14F controls the tempo of the tempo.

Next, the circuit configuration of this embodiment will be described with reference to FIG. The command information of the rhythm pattern such as lock and disco selected by the rhythm key 14A of the rhythm designating section 14 is sent to the rhythm generating section 15 and the accompaniment pattern ROM 16. The rhythm generator 15 generates a rhythm tone signal based on the rhythm pattern command information and sends it to the sound system 17 to emit a percussion instrument sound of the selected rhythm.

On the other hand, with the backing lever 13A and the bass lever 13B of the accompaniment pattern designating section 13 described above.

The command information of each accompaniment pattern is sent to the accompaniment pattern ROM 16 by switching to [Outer 1]. The accompaniment pattern ROM 16 stores 4 types of chord patterns and 4 types of bass patterns, including the case where chords are continuous tones, corresponding to 12 types of rhythm patterns such as rock and disco. The accompaniment pattern data of the seed is stored. The accompaniment pattern ROM 16 is read based on both the command information of the rhythm pattern and the command information of each accompaniment pattern, and the accompaniment pattern data thus read out is sent to the scale assignment circuit 18. For example, the chord name data determined by the accompaniment chord designating section 19 is sent to the scale assigning circuit 18 by being pressed by a keyboard for two octaves assigned for accompaniment in the keyboard 11, for example. In this way, the scale assignment circuit 18 sends specific chord and base pitch data to the channel assigner 20 based on each accompaniment pattern data and chord name data.

On the other hand, a key code detection unit 21 is connected to the above-mentioned keyboard 11, detects which key of the keyboard 11 is being pressed, and pitch data (key code) indicating this pressed key. To the channel assigner 20. The channel assigner 20 allocates, for example, a time-division processing channel to the pitch data produced by the keyboard 11 and the pitch data produced by the accompaniment pattern data. Up to 4 channels (1 note of bass and 3 notes of chord) can be assigned to pitch data of 4 channels and accompaniment pattern data. Based on the pitch data from the channel assigner 20, the frequency data of the corresponding scale is read from the f-ROM (frequency ROM) 22 and sent to the waveform ROM 24 via the read control circuit 23.

To the waveform ROM 24 is connected a tone color designating section 25 consisting of a plurality of keys provided in the switch input section on the electronic musical instrument body case, and tone color command information such as piano sound and guitar sound is stored in the tone color designating section 25. From the f-ROM 22 and necessary waveform data are read from the waveform ROM 24 and sent to the multiplication unit 26. At the same time, the tone color command information from the tone color designation unit 25 is sent to the envelope generation unit 27, the envelope waveform of the piano sound, the guitar sound, etc., which matches the tone color command is determined, and the envelope waveform data is sent to the multiplication unit 26. And is multiplied with the waveform data from waveform R OM24. Then, the resulting data is sent to the sound system 17 and is emitted as an accompaniment sound and a performance sound.

A case of performing an automatic performance with the electronic musical instrument of this embodiment configured as described above will be described with reference to the explanatory view of FIG. 6 and the musical score of FIG. 7.

First, a desired accompaniment rhythm such as rock or disco is selected with the rhythm key 14A and pressed, and then the backing lever 13A and the bass lever 13B are operated to obtain the chord sound and the bass sound of the accompaniment desired. set. Then, when the start / stop key 14B of the rhythm designating section 14 is pressed, only the accompaniment is played, and when it is pressed again, the accompaniment stops. When the synchro key 14C next to it is pressed and the accompaniment keyboard of the keyboard 11 is pressed, the accompaniment starts at the same time. By pressing the start / stop key 14B and the synchro key 14C, generation of a rhythm sound from the rhythm generation section 15 and generation of an accompaniment sound based on accompaniment pattern data from the accompaniment pattern ROM 16 are controlled.

To determine the accompaniment pattern by the rhythm key 14A and the two levers 13A and 13B, for example, if the rhythm key 14A is bossa nova, the rhythm sound is first determined, and the rhythm sound is displayed as shown in FIG. The percussion instrument sounds and the backing lever 13A and the base lever 13B

Each of the accompaniment sounds corresponding to the score shown in FIG. The musical score in the drawing is when the specified accompaniment code is "C major". For example, lever 13 A

[Outside 2] When set to, the chord sound of the accompaniment is continuously emitted as shown in the score. That is, there are 16 combinations of bass chords in one rhythm. In this way, swing the rhythm key 14A to move the lever 13A.

[Outside 3] If set to, the chord sound will be persistent as well,

[Outside 4] If set to, chord sounds in a sounding mode corresponding to each pattern linked with the rhythm will be obtained. In this way, the chord sound can be played continuously, or can be another chord. The case where the chord sound is continuously emitted is the shaded portion in the explanatory diagram of FIG.

The rhythm pattern selected as described above is emitted from the sound system 17 as a rhythm sound by the rhythm generation unit 15. The rhythm pattern and the selected accompaniment pattern are the accompaniment pattern ROM 16 And each accompaniment pattern data is read. Based on the accompaniment pattern data and the scale data specified by the accompaniment code of the keyboard 11, the scale assignment circuit 18 sends the accompaniment pitch data of the bass and chord corresponding to each timing to the channel assigner 20, and the keyboard 11 sends the data. The pitch data of the performance is sent to the channel assigner 20. The channel assigner 20 assigns channels to the accompaniment data and the performance data, and based on these data and the tone color command, the frequency of the accompaniment sound and the performance sound, the waveform and the envelope waveform data are determined. Accompaniment sounds and performance sounds are emitted along with the rhythm sounds.

If the rhythm key 14A or the two levers 13A and 13B are switched to another while the accompaniment sound is being emitted, the pattern of the accompaniment sound will be changed immediately at that point.

[0018]

[Effect of device]

 As described above, the present invention stores accompaniment pattern data for emitting chord sounds as continuous tones and a plurality of accompaniment pattern data for emitting chord sounds as intermittent tones according to the type of rhythm. , It is possible to properly switch the pronunciation mode of the accompaniment chord sound to continuous tone or intermittent tone by specifying the rhythm type by distinguishing between those that store only the accompaniment pattern of the intermittent tone. At the same time, the chord sound continuous emission pattern was placed only where it was needed according to the rhythm.Therefore, an extra chord changeover lever like the conventional one for specially performing the accompaniment sound continuous emission was used. It is possible to obtain a wide variety of effective automatic accompaniment sounds without using them.

[Brief description of drawings]

FIG. 1 is an enlarged view of a conventional cord switching lever.

FIG. 2 is an enlarged view of an elect lever.

FIG. 3 is an enlarged view of an accompaniment pattern designating section.

[Figure 4] Enlarged view of the rhythm designator

FIG. 5 is a circuit configuration diagram of a main part.

FIG. 6 is an explanatory diagram showing an automatic accompaniment selection pattern.

FIG. 7A shows an example of a rhythm pattern, and FIG.
Is a diagram showing the variation of the accompaniment pattern accompanying the rhythm in the score

[Explanation of symbols]

 11 keyboard 13 accompaniment pattern designator 14 rhythm designator 16 accompaniment pattern ROM

Claims (1)

[Scope of utility model registration request] 1. An accompaniment pattern data for emitting a chord sound as a continuous tone and an accompaniment pattern data for emitting a chord sound as an intermittent tone corresponding to at least one kind of rhythm, and another type. Storage means for storing a plurality of types of accompaniment pattern data for emitting the chord sound as an intermittent sound corresponding to the rhythm, a rhythm type designating means for designating the type of rhythm, and an accompaniment pattern stored in the storage means. Among these, accompaniment pattern data selecting means for selecting any one accompaniment pattern data from a plurality of accompaniment pattern data corresponding to the rhythm type designated by the rhythm type designating means, and this accompaniment pattern data selecting means The accompaniment pattern data selected and designated by is read from the storage means,
An electronic musical instrument comprising: an accompaniment sound generation instructing means for instructing generation of an automatic accompaniment sound in a mode according to the read accompaniment pattern data.