JPH0450599B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an electronic musical instrument in which a performance device and an accompaniment device are separate and independent, and particularly to one in which the performance device and the accompaniment device are mutually controlled.

[Prior art]

In recent years, various instruments have been developed that automatically generate rhythm tones, and that automatically generate bass, chords, arpeggios, etc. in conjunction with the rhythm tones, so that even beginners can perform with ease. Such an accompaniment device has conventionally been built into the main body of an electronic musical instrument.

[Problems with conventional technology]

Therefore, recently, improvements have been made to the accompaniment device part, such as being able to play chords with one finger or adding accompaniment sounds just by playing a melody. However, the purchaser had to replace the performance device at any time, and could not purchase only the accompaniment device or only the performance device separately.

[Purpose of the invention]

The present invention was made against the background of the above circumstances, and it is possible to upgrade by replacing either the performance device or the accompaniment device, and to make the replaced device compatible with the other device. purpose.

[Key points of the invention]

In order to achieve the above object, the present invention makes a performance device and an accompaniment device separate and independent, supplies a signal indicating the accompaniment form from the accompaniment device to the performance device to specify the accompaniment form, and performs the performance by the performance of the performance device. They are characterized in that they mutually control each other so as to supply signals to the accompaniment device and generate accompaniment sounds.

[First Embodiment] Structure The following is a description of the first embodiment of the present invention in FIGS. 1 to 4.
This will be explained in detail with reference to the drawings.

1 in Figure 1 is a performance device, and on the front side of the top surface is a musical scale C ₂ to C ₇ (numbers such as ₂ indicate the number of octaves) 61
A keyboard 2 is provided, and above the keyboard 2 are provided a tone selection switch 3 for selecting and specifying tones such as piano, violin, guitar, etc., and an effect switch 4 for adding effects such as vibrato and sustain. It is being This performance device 1 has an amplifier 5.
The built-in speaker 6 is connected to the keyboard 2 above.
It is possible to emit melody performance sounds and the like that are output by key operations. The amplifier 5 and speaker 6 may be built into the performance device 1.

An accompaniment device 8 is connected to the performance device 1 via a connection cable 7, and an accompaniment mode designation switch 9, a chord switch (not shown), and the like are provided on the accompaniment device 8. The accompaniment mode designation switch 9 can be switched to off mode, finger guard mode, and one finger mode. In off mode, automatic accompaniment is not performed and normal manual performance can be performed using the entire keyboard 2, and in finger guard mode. In this case, a specific key in the bass part of keyboard 2 becomes an accompaniment key, and when you press a chord with your left hand, automatic accompaniment is performed.In one-finger mode, when you press one key on the accompaniment keyboard, you can play maj, two keys are mm, and three keys are pressed. Well then
A chord is specified, such as the 7th, and automatic accompaniment is provided. On the other hand, the chord switch can be switched to continuous mode, rhythmic mode, and arpeggio mode. In continuous mode, only the bass sound of the automatic accompaniment mentioned above is linked to the rhythm, and in rhythmic mode, both the chord and bass sound of automatic accompaniment are linked. In conjunction with the rhythm, the arpeggio mode adds an arpeggio to the accompaniment of the rhythmic mode. A speaker 11 with a built-in amplifier 10 is connected to the accompaniment device 8, so that the rhythm sound and accompaniment sound can be emitted. The amplifier 10 and the speaker 11 may be built into the accompaniment device 8.

Next, referring to FIG. 2, the performance device 1 and the accompaniment device 8 will be described.
The circuit configuration of will be explained. The accompaniment form detector 12 detects the switching of each mode of the accompaniment form designating switch 9 of the accompaniment device 8, and the mode switching information is given to the chord discriminator 13 and the sound region generation device 14. This sound generation area generating device 14 generates sound generation area information such as a musical scale when the mode switching information is finger guard mode or one finger mode.
The data of G ₃ # is input to the command generator 15. This sound generation area information is for dividing the lower pitch side of the scale G ₃ # of the keyboard 2 for accompaniment purposes.

On the other hand, the receiving circuit 16 receives key press information sent from the performance device 1 as described later, and provides it to the command decoder 17. The command decoder 17 decodes the key press information and generates a key press pattern generator 18. It is given to This key press pattern generator 18 creates key press pattern information from one or more key press information and supplies it to the code discriminator 13.

The chord discriminator 13 is configured of a ROM, for example, and has a finger mode area and a one finger mode area, and the accompaniment form detector 1
When the mode switching information from 2 is finger mode or one finger mode, each area is specified (it does not function in off mode), and code information is created based on the key press pattern information from the key press pattern generator 18. Then, they are applied to an obbligard pattern generator 19, a chord pattern generator 20, a base pattern generator 21, and an arpeggio pattern generator 22, respectively. Of these, chord, bass, and arpeggio pattern generators 2
0, 21, 22 are the above code switches (not shown)
are driven according to each mode of the chord sound source 23, bass sound source 24, and arpeggio sound source 25, respectively.
This outputs an accompaniment musical tone signal and supplies it to the mixer 26. This mixer 26 mixes each accompaniment musical tone signal into one signal, amplifies this signal via an amplifier 10, and causes the speaker 11 to emit sound.

Further, the obbligato pattern generator 19 transfers obbligato pattern information to the command generator 1 based on the code information from the code discriminator 13.
5. The command generator 15 is
To indicate that the obbligato pattern information is key press information, "1" (high state of binary logic level) is added to the upper part of it as shown in Figure 4, and the above sound generation area information is also added to the upper part of the information. "0" (binary logic level Low state) is added to the information, and the information is transmitted from the transmitting circuit 27 to the performance device 1.
The signal is transmitted to the receiving circuit 28 of the device via the connecting cable 7.

The receiving circuit 28 of the performance device 1 provides the received information to the command decoder 29, and the command decoder 29 decodes the upper value of each piece of information and provides obbligato pattern information in which the upper value is "1" to the melody sound source 30. At the same time, the sound generation area information whose upper value is "0" is given to the sound generation memory 31.

On the other hand, each key operation on the keyboard 2 is detected by a key press detector 32.
The 8-bit key depression information shown in FIG. 3 is generated, and the most significant bit is "0" when the key is on and "1" when the key is off. This key press information is given to the comparator 33, and a command generator 34 adds a key press command "1" shown in FIG. It is also provided to the receiving circuit 16 of.

The comparator 33 is also supplied with the information in the pronunciation memory 31, and provides the melody sound source 30 only with the key press information that has a value larger than the information value from the pronunciation memory 31, that is, on the treble side. It is something. This melody sound source 30 is also provided with information from an effect tone detector 36 that detects each ON operation of the tone selection switch 3 and effect switch 4, and based on this information, the obligate information and key press information. A melody musical tone signal is outputted, this signal is amplified via an amplifier 5, and the sound is emitted from a speaker 6.

Operation Next, the operation of this embodiment configured as above will be explained.

If the accompaniment type designation switch 9 is currently in the off mode, the accompaniment type detector 12 provides off mode information to the sound generation area generator 14, and nothing is input to the command generator 15. Therefore, the command generator 15, the transmitting circuit 27, and the receiving circuit 28
and the pronunciation memory 31 via the command data 29.
can't give anything. Therefore, pronunciation memory 3
The information in 1 is O, and all key press information input from the key press detector 32 to the comparator 33 is transferred to the melody sound source 30, where a melody musical tone signal is generated and amplified and emitted. As a result, normal manual playing is possible using the entire keyboard 2. At this time, the key press information is converted into key press pattern information by the key press pattern generator 18 via the command generator 34, transmitting circuit 35, receiving circuit 16, and command decoder 17, and is input to the code discriminator 13. Since the chord discriminator 13 is not functioning because it is given off-mode information by the accompaniment form detector 12, accompaniment by the accompaniment device 8 is not performed.

Next, when the accompaniment type designation switch 9 is switched to the finger guard mode, the sound generation area generator 14 is given information on the finger mode from the accompaniment form detector 12, and the sound generation area information, that is, the scale
The data “*0111000” of G ₃ # (* is “0” when the key is on and “1” when the key is off) is given to the command generator 15. The command generator 15 adds the sound generation area command "0" shown in _FIG . . The command decoder 29 determines that the upper part of this data is "0", and the data of G ₃ # "*0111000" is written into the sound generation memory 31.

Now, on keyboard 2, scale C ₂ , E ₂ , G ₂ and F ₄
When the key is pressed, the key press detector 32 detects the third key.
As shown in the figure, "*0100000" and "*
0100100,” “*0100111,” and “*1000101” (* is “0” when the key is on and “1” when the key is off.) is given to the comparator 33. Then, the comparator 33 The value excluding the upper * in the information is compared with the data value excluding the upper * in the scale G ₃ # given from the pronunciation memory 31, and the higher value F ₄ on the treble side is given to the melody sound source 30. According to the information from the effect timbre detector 36, a musical tone is generated and amplified and emitted.

In this way, by providing the sound generation area information from the accompaniment device 8 to the performance device 1, only the scales higher than the scale G ₃ # of the keyboard 2 are emitted from the performance device 1 as a melody performance.

Now, the above key press information of C ₂ , E ₂ , G ₂ and F ₄ is generated by the command generator 34, the transmitting circuit 35, and the receiving circuit 16.
The information is then converted into key press pattern information by a key press pattern generator 18 via a command decoder 17 and inputted to the code discriminator 13. Code discriminator 13
is functioning by being given the finger mode information from the accompaniment form detector 12, so it is determined that it is a Cmaj chord from the key press pattern information C ₂ , E ₂ , G ₂ , and the Cmaj chord is detected. Information is input to an obbligato pattern generator 19, a chord pattern generator 20, a bass pattern generator 21 and an arpeggio pattern generator 22, respectively. The chord, bass, and arpeggio pattern generators 20, 21, and 22 each function by switching a chord switch (not shown), and each pattern information is generated and sent to the chord sound source 23, bass sound source 24, and arpeggio sound source 25, respectively. Each musical tone signal is inputted, generated, converted into one musical tone signal by the mixer 26, and amplified and emitted.

In this way, by giving the key depression information from the performance device 1 to the accompaniment device 8, the musical scale of the keyboard 2 is
Only the scales lower than G ₃ # are emitted as accompaniment sounds from the accompaniment device 8, and the keyboard 2 is divided into two parts: one for playing the above-mentioned melody on the treble side and one for accompaniment on the bass side.

Also, based on the Cmaj code information described above, the obbligato pattern generator 19 generates obbligato pattern information, such as G ₃ "*0110111" and C ₄ "*
1000000'' is generated and given to the command generator 15. In the command generator _{15 ,} a key press command "1" shown in FIG. In the command data 29, it is determined that the higher order of this data is "1", and each data of G ₃ and C ₄ is given to the melody sound source 30, and the effect tone detector 36
According to the information from the melody, musical tones are generated and amplified and emitted as obbligato performance sounds together with the melody tones.

In this manner, the obbligato pattern information generated based on the key press information on the keyboard 2 is provided from the accompaniment device 8 to the performance device 1, so that an obbligato performance sound is emitted from the performance device 1.

Next, when the accompaniment type designation switch 9 is switched to the one-finger mode, the chord discriminator 13 is given one-finger mode information from the accompaniment type detector 12, the one-finger mode area of the ROM is specified, and the accompaniment of the keyboard 2 is specified. For example, if three keys of the scale C ₂ , E ₂ , and G ₂ are pressed on a commercial keyboard, C
The chord information of C ₇ th with the root note is output, and automatic accompaniment is performed in the same way as in the fingered mode described above.

[Second Embodiment] FIG. 5 shows a second embodiment, in which a chord memory 37 is provided between the chord discriminator 13, the arpeggio pattern generator 22, etc. The chord memory 37 stores the chord information output from the chord discriminator 13 to the arpeggio pattern generator 22 and the like at the same time. When the stored contents are output and automatic accompaniment is performed, the performer only has to play the melody on the performance device 1, which is convenient when the player only wants to practice the melody.

[Third Embodiment] FIG. 6 shows a third embodiment. In this embodiment, the accompaniment device 8 has a plurality of input/output terminals for connecting the connection cable 7, and two performance devices 1 are connected to the accompaniment device 8, and used as a two-level keyboard, for example, the upper keyboard is used for a harpsichord. It can be used by setting the tone and the lower keyboard to a cembalo tone. In this way, by adding another performance device 1 to the pair of performance device 1 and accompaniment device 8, it is possible to enjoy performances with even greater variety.

Although in this embodiment a plurality of performance devices 1 are connected to the accompaniment device 8, a plurality of accompaniment devices may be connected to the performance device 1 conversely.

Furthermore, in the three embodiments described above, the accompanist and obbligato performance sounds are mutually controlled between the performance device 1 and the accompaniment device 8, but in addition, the performance device 1
Various other information such as controlling the selection of tones of piano, violin, etc. based on the rhythm selection designation of march, waltz, etc. and the chord selection designation of chord, bass, arpeggio, etc. of the accompaniment device 8. Control may also be performed.

〔Effect of the invention〕

As described above, the present invention makes the performance device and the accompaniment device separate and independent, specifies the accompaniment form in the performance device based on the signal from the accompaniment device, and receives the performance signal from the performance device to produce the accompaniment sound from the accompaniment device. This allows the purchaser to purchase the performance device and accompaniment device separately, making it possible for the purchaser to purchase only the performance device first and then purchase the accompaniment device, or purchase a performance device with new functions or an accompaniment device. It can be easily upgraded by adding more devices, and by manufacturing various accompaniment devices and performance devices, users can freely select the combination of accompaniment device and performance device that suits their preferences. Furthermore, the performance device and the accompaniment device can be designed independently.

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention, in which FIG. 1 is an external perspective view showing a connection state between a performance device and an accompaniment device, and FIG. 2 is an internal circuit configuration of FIG. 1. 3 is a diagram showing a list of codes generated by each key operation on the keyboard, and FIG. 4 is a diagram showing command data added to the top of each information by the command generator. FIG. 5 is an internal circuit configuration diagram of the second embodiment, and FIG. 6 is an external perspective view of the third embodiment. 1... Performance device, 2... Keyboard, 13... Chord discriminator, 14... Sound generation area generator, 15, 34
...Command generator, 17, 29...Command decoder, 18...Key press pattern generator, 19...
Obbligato pattern generator, 31... Sound generation memory, 32... Key press detector, 37... Code memory.

Claims (1)

[Claims] 1. A plurality of performance operators, a transmitting means for outputting operation signals from the performance operators to the outside, a receiving means for receiving signals from the outside, and a device corresponding to the signals from the receiving means. selection means for selectively outputting at least a part of the operation signals from the plurality of performance operators;
a musical sound generating means for generating a musical tone in response to an operation signal from the selection means; an accompaniment form specifying means for outputting a designation signal for specifying an accompaniment form; and an accompaniment form designation means for outputting the designation signal to the outside. an accompaniment means having a transmitting means, a receiving means for receiving a signal from the outside, and an accompaniment sound creating means for generating an accompaniment sound based on the signal from the receiving means and the signal from the accompaniment form specifying means; An electronic musical instrument characterized by comprising: connection means for connecting the transmission means of the accompaniment means and the reception means of the performance means, and the connection means for connecting the reception means of the accompaniment means and the transmission means of the performance means.