JPH07129176A - Accompaniment system and electric stringed instrument as incorporation of system - Google Patents

Abstract

PURPOSE:To make automatic adjustment of the volume of rhythm and volume of guitar when a rhythm box is used to make band training with electric guitar or to enjoy a full orchestra playing. CONSTITUTION:An electric guitar 1 contains in its body 5 an electronic sound source circuit 13, card slot 11, mixing part 15, amplifier circuit 17, speaker 19, etc., which function as a rhythm box. The contents of guitar playing are sensed by a pickup 7, part whereof is diverged and subjected to voltage adjustment and A/D conversion, and a CPU 30 reads it in as digital values within the range 0-5V. The ideal volume for the rhythm volume set value is divided with this read digital value, and the amplification factor for putting the volume of guitar play identical to the ideal condition is calculated, and the amplification factor of an operation amplifier 45 is adjusted. This processing of balance auto-adjustment takes place only one run after a balance auto-adjust switch installed within a switch panel 25 is turned on.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accompaniment system for practicing a band with an electric guitar or enjoying a full orchestra performance by one person.

[0002]

2. Description of the Related Art Conventionally, when practicing a band performance with an electric guitar or enjoying a full orchestra performance by one person, a rhythm box containing an accompaniment pattern and a mixing device are prepared, and the mixing device is equipped with an electric guitar. I connected a guitar and a rhythm box, mixed and amplified the tone signals from both, and output them from the speaker.

[0003]

By the way, when performing such band practice, if the volume of the electric guitar and the volume of the rhythm box are not properly balanced, it is necessary to practice comfortably. I can't. However, the volume of the electric guitar is adjusted by adjusting the volume switch provided in the electric guitar, and the rhythm box needs to operate the volume switch provided in the rhythm box, which is troublesome.
Moreover, the result of adjusting the volume balance cannot be confirmed unless the sound is actually produced, which may be very time-consuming.

Therefore, the first object of the present invention is to eliminate the inconvenience of volume adjustment and to automatically adjust the balance of the volume, and even if the automatic adjustment function is provided, delicate performance expression is impaired. The second purpose is to provide a system without
A third object is to realize these in electric stringed instruments such as electric guitars.

[0005]

The accompaniment system of the present invention, which has been completed to achieve the first object, detects a musical instrument performance or a singing condition of a performer, as described in claim 1,
Performance signal output means for outputting as a performance signal to be emitted from the speaker, accompaniment signal output means for outputting an accompaniment signal corresponding to the accompaniment to the musical instrument performance or singing of the performer, and the performance signal and the accompaniment signal are mixed. In the accompaniment system comprising a mixing means, an amplification means for amplifying the mixed signal or each signal before mixing, and a speaker for emitting a sound based on the mixed and amplified signal, the volume of the performance signal According to the volume relationship determining means for determining whether or not the level and the volume level of the accompaniment signal have a predetermined relationship, and the determination result of the volume relationship determining means, the relationship between the volume levels of the performance signal and the accompaniment signal is If it is determined that the signals are out of the prescribed relationship, the volume level of both signals should be adjusted before mixing with the mixing means. Wherein the Le relationship and a volume level adjustment means for relatively adjusting the volume level of both signals as fit in the predetermined relationship.

The accompaniment system of the present invention completed to achieve the second object is, as described in claim 2, in the accompaniment system according to claim 1, the volume of the volume level adjusting means. The present invention is characterized by further comprising request responding means configured such that the level adjustment is executed only after a balance adjustment request is made, and once the balance adjustment is completed, the balance adjustment is not repeated.

The electric stringed instrument of the present invention completed to achieve the third object, as described in claim 3, provides pickup means for detecting the vibration of the string as analog information and accompaniment pattern as digital information. Accompaniment information giving means, D / A conversion means for converting digital information given by the accompaniment information giving means to analog information, analog information detected by the pickup means and analog information obtained by the D / A conversion means An electric stringed musical instrument having a main body in which a mixing means for mixing, a amplifying means for amplifying the mixed signal or each signal before mixing, and a speaker for emitting sound based on the mixed and amplified signal are incorporated in a main body. Furthermore, the volume level of the analog information detected by the pickup means and the accompaniment information are added. According to the volume relationship determining means for determining whether or not the volume level of the digital information given from the stage has a predetermined relationship, and the determination result of the volume relationship determining means, the analog information of the pickup means is detected. When it is determined that the volume level and the volume level of the digital information given by the accompaniment information adding means are out of the predetermined relationship, the relationship between the volume levels of the two signals is determined before mixing by the mixing means. A volume level adjusting means for adjusting a relative volume level of both signals so as to be within a predetermined relationship is incorporated in the main body.

As described in claim 4, in the electric stringed instrument according to claim 3, the analog information detected by the pickup means is branched and taken out, and the voltage level is adjusted to fall within a predetermined range. A voltage adjusting unit and an A / D converting unit for converting the analog information adjusted by the voltage adjusting unit into digital information are provided, and the volume relationship judging unit is based on the digital information obtained by the A / D converting unit. It may be configured to judge the volume level of the analog information.

Further, more specifically, as described in claim 5, in the electric stringed instrument according to claim 4, an operation amplifier having a variable amplification factor is provided between the pickup means and the mixing means. However, by adjusting the amplification factor of the operation amplifier by the volume level adjusting means, it is possible to adjust the balance between the volume levels of the analog information from the pickup means and the digital information from the accompaniment information adding means. As described in claim 6, in the electric stringed instrument according to claim 4, the volume level adjusting means adjusts the volume level of the digital information output from the accompaniment information adding means, and then D / By giving to the A conversion means, the sound of the analog information from the pickup means and the digital information from the accompaniment information giving means It can also be configured to adjust the balance of levels.

Further, as described in claim 7, in the electric stringed instrument according to any one of claims 3 to 6, there is a request for balance adjustment for adjusting the volume level by the volume level adjusting means. It is also preferable to provide a request handling unit configured to be executed only after the balance adjustment and not to repeat the balance adjustment once the balance adjustment is completed.

[0011]

According to the accompaniment system of the present invention, it is determined that the relationship between the performance signal and the volume level of the accompaniment signal deviates from the predetermined relationship when the musical instrument performance or singing of the performer is accompanied by an accompaniment and output from the speaker. In such a case, before mixing the two signals, the relative volume levels of the two signals are adjusted so that the relationship of the volume levels of the two signals falls within the predetermined relationship. Therefore, the musical instrument performance or singing and the accompaniment are automatically adjusted so as to be in a predetermined balance, and a comfortable accompaniment performance is performed without making troublesome volume balance adjustment.
You can enjoy singing.

Further, according to the system described in claim 2, the automatic adjustment of the volume balance is executed only in response to the request and is not repeated once the balance adjustment is completed. It does not disappear as a result of automatic adjustment, resulting in a monotonous performance.

According to the electric stringed instrument of the present invention as defined in claim 3, the volume level of the analog information detected by the pickup means and the volume level of the digital information provided by the accompaniment information adding means have a predetermined relationship. Then, the balance of the volume of both is automatically adjusted. Moreover, since the vibration of the string is detected as analog information by the pickup means, it is possible to express a delicate tone color peculiar to an electric guitar or the like. Further, accompaniment information giving means, D / A
Since the converting means, the mixing means, the amplifying means and the speaker are built in the main body, there is no need to connect with a rhythm box or the like, and the practice of band performance can be started easily.

According to the electric stringed instrument of claim 4,
Since the analog information is converted into a digital value to judge the volume balance, the judgment can be made accurately and quickly. Further, according to the electric stringed instrument of the fifth aspect, since the analog information from the pickup means is amplified by the operation amplifier at a predetermined amplification factor before being given to the mixing means, the volume balance can be easily adjusted. . Further, according to the electric stringed instrument described in claim 6, on the contrary, since the volume level of the digital information output from the accompaniment information adding means is adjusted and then mixed, the volume balance can be easily adjusted. You can make adjustments. In addition, according to the electric stringed instrument described in claim 7, the technique such as intonation expressed by the performer does not disappear by automatic adjustment, as in the system described in claim 2.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, an electric guitar 1 as a first embodiment includes a main body 5 having an iron string 3 and a pickup 7 for detecting vibration of the iron string 3 as analog information.
And a ROM recording the accompaniment pattern as digital information
A card slot 11 into which a card 9 is mounted, an electronic sound source circuit 13 centered on a CPU, and a mixing section 1 for mixing output signals from the electronic sound source circuit 13 and the pickup 7.
5, an amplifier circuit 17 that amplifies the signal mixed by the mixing unit 15, a speaker 19 that produces a sound based on the signal amplified by the amplifier circuit 17, and a headphone 21. A headphone terminal 23 which is used by switching between, a control panel 25 for designating various condition settings for the electronic sound source circuit 13, a MIDI terminal 27, and a dry battery 29 for power supply.

The pickup 7 is provided for each of the iron strings 3, and detects the change in the magnetic field caused by the vibration of the iron strings 3 and outputs it as an analog signal. The electronic tone generator circuit 13 includes a CPU 30, a program memory 31, a tone waveform memory 32, a RAM 33, an automatic performance data memory 34, a tone generator circuit 35, a card interface circuit 36, a panel interface circuit 37, M.
An IDI interface circuit 38 and a D / A converter 39 are provided. Further, a voltage adjusting circuit 41 which takes in a part of the signal from the pickup 7 and adjusts it so as to be a voltage in the range of 0 to 5V, and an A / D which converts an analog signal from the voltage adjusting circuit 41 into a digital signal. A converter 43 is also provided.

The program memory 31 stores a control processing program for performing accompaniment. The musical tone waveform memory 32 stores information relating to musical tone waveforms of various musical instruments such as drums and bass necessary for accompaniment. RA
M33 is for temporarily storing data and the like when executing various arithmetic processes. The automatic performance data memory 34 is a ROM that stores some rhythm patterns and the like in advance. The tone generator circuit 35 has a plurality of parallel tone generation channels and outputs a digital tone signal from the tone waveform data read from the tone waveform memory 32 and the accompaniment data read from the automatic performance data memory 34 or the card interface circuit 36. It is a circuit to do. The card interface circuit 36 is a circuit that is connected to the card slot 11 and reads the stored contents of the ROM card 9. The panel interface circuit 37 is
This circuit is connected to the operation panel 25 and reads an instruction from the operation panel 25. The MIDI interface circuit 38 is connected to the MIDI terminal 27 and outputs the performance data read from the automatic performance data memory 34 or the ROM card 9 to an external MIDI compatible device, or conversely, the performance data from an external MIDI compatible device. Or type. The performance data input from an external MIDI-compatible device can be processed for accompaniment like the data read from the automatic performance data memory 34 or the ROM card 9. The D / A converter 39 is for converting the digital signal output from the tone generator circuit 35 into an analog signal.

The mixing section 15 is provided with a variable resistance type guitar volume adjusting circuit 15a for adjusting the strength of the analog signal detected by the pickup 7. An operational amplifier 16 for adjusting the impedance of the circuit is provided between the volume adjusting circuit 15a and the pickup 7. The operational amplifier 16 also has a role of adjusting the volume of the accompaniment sound. A branch point 15b for branching a signal to the above-mentioned voltage adjusting circuit 41 is also provided at a position downstream of the guitar volume adjusting circuit 15a. An operation amplifier (op amp) 45 whose amplification factor can be varied by the CPU 30 is arranged between the branch point 15b and the mixing point 15c.

The operational amplifier 45 has a structure as shown in FIG. That is, the operational amplifier 45 is a resistor R
When the CPU 30 selects any one of x (x = 1 to 8), the amplification factor can be selected in eight stages in accordance with the relationship with another resistor Rf. The amplification factor is
It is determined by the following formula.

[0020]

## EQU1 ## (amplification factor) = 1 + Rf / Rx Here, for example, R1 = Rf, R2 = R1 / 3, R3 =
R1 / 7, R4 = R1 / 15, R5 = R1 / 31, R6
= R1 / 63, R7 = R1 / 127, R8 = R1 / 25
If it is set to 5, depending on which of the resistors R1 to R8 outputs the low level signal to the port, the operational amplifier 45 has a factor of 2 times, 4 times, 8 times, 16 times, 32 times,
It is possible to set amplification factors of 64 times, 128 times, and 256 times. If a plurality of resistors on the Rx side are used in parallel, the gain can be adjusted more finely.

The operation panel 25 includes a rhythm volume switch 51 for adjusting the volume of the accompaniment pattern generated by the electronic tone generator circuit 13, a tempo switch 52 for adjusting the tempo of the pattern, and a transformer for transposing the pattern. The pause switch 53, the select switch 54 for pattern selection, the part mute switch 55 for muting a predetermined part, the automatic performance data memory 34, and the ROM card 9 are selected as accompaniment data. Changeover switch 56 for changing over
And a guitar volume switch 57 and other switches 58 for adjusting the guitar volume, and a display section 59. Further, an automatic balance automatic adjustment switch 61 for instructing execution of automatic volume balance adjustment described later is also provided. Rhythm volume switch 51, tempo switch 5
2, transpose switch 53, select switch 5
Reference numeral 4 is composed of a pair of button switches, and is configured to increase / decrease the volume and change the tempo by an up / down instruction. Part mute switch 5
5, changeover switch 56 and balance automatic adjustment switch 6
Reference numeral 1 is composed of one button switch each, and is configured to sequentially change the selection content. The display unit 59 is a two-digit number display window including two sets of 7-segment LEDs. The display unit 59 displays the setting contents according to the operation of each of the switches 51 to 56.

Next, the processing contents of the CPU 30 will be described. FIG. 4 is a main routine. CPU30
When the power is turned on, first, initialization processing is executed (S10). In this process, the contents stored in the RAM 33 are cleared, and the state of the sound source (rhythm volume, tempo, transpose, rhythm pattern select, part mute setting, etc.) is initialized. In this initial setting, assuming that the volume of the guitar is the reference value, the rhythm volume is initially set in consideration of the balance with the reference value.

Next, a switch event process is executed (S20). In this processing, the operating states of the switches 51 to 58 of the operating panel 25 are scanned, the setting state of the sound source is changed accordingly, and the setting contents by the operated switches are displayed on the display section 59 as two-digit numbers. Display with. The player can set an arbitrary rhythm pattern, rhythm volume, etc. by moving the numbers up and down while checking the numbers displayed on the display unit 59.

When the sound source setting by the performer is completed, the automatic performance process is started (S30). The automatic performance process is exactly the same as that performed by a normal rhythm box or electronic musical instrument, and the process will be briefly described below. The accompaniment pattern data is read from either the automatic performance data memory 34 or the ROM card 9 according to the setting of the rhythm pattern selection, the musical tone waveform is read from the musical tone waveform memory 32 according to the note-on data, and further set by switch event processing. Considering the set rhythm volume, tempo, transpose, part mute setting, and the like, and the volume level determined by the note-on data itself, the tone data including the envelope is set for each tone in the empty channel of the tone generator circuit 35. On the other hand, when note-off data is read, the volume level of the channel for which note-off is instructed by this data is set to "0".
Set to. The tone generator circuit 35 outputs a digital signal which changes drum-specifically in the case of a drum based on the musical tone data thus set according to the note-on data, and stops the output in accordance with the note-off instruction. The digital signal thus output is converted into an analog signal by the D / A converter 39, amplified by the amplifier circuit 17, and emitted from the speaker 19. In this way, it functions as a rhythm box.

The function of the electric guitar is executed regardless of the processing by the CPU 30. That is,
The vibration of the iron string 3 detected by the pickup 7 is given to the mixing unit 15 as an analog signal and mixed with the accompaniment pattern converted into the analog signal. At this time, the volume of the electric guitar is adjusted to the volume intended by the player by passing through the guitar volume adjusting circuit 15a before mixing. If the accompaniment pattern is not selected, it can be used as a simple electric guitar.

In addition to the above processing, other processing is executed if necessary (S40). The processing of S20 to S40 is
It is repeated sequentially until the power is turned off. As this other processing, particularly in the present embodiment, processing for automatically adjusting the volume of the guitar performance and the volume of the rhythm pattern to an ideal balance is executed.

The balance automatic adjustment process is premised on the switch event process as shown in FIG. In the switch event process, when it is determined that there is a switch event as a result of the panel scan, it is determined whether the switch having the event is the balance automatic adjustment switch 61 (S21 to S23). Balance automatic adjustment switch 6
If No. 1 has been operated, a flag (automatic adjustment request flag) FLG indicating that automatic adjustment of volume balance has been requested is set to ON (S24). On the other hand, if the switch operation is other than the automatic balance adjustment switch 61, a process corresponding to each switch, for example, rhythm pattern selection is executed (S25). Then, at the end of these processes, the LE for sequentially displaying the contents set according to the switch event on the display unit 59.
D processing is executed (S26).

Thus, the automatic adjustment request flag FLG
When is set to ON, the balance automatic adjustment processing as shown in FIG. 6 is executed as one of the "other processing (S40)" in the main routine. In this process, first, the automatic adjustment request flag FLG is checked, and if it is OFF, the process routine is exited without executing the following process (S41; NO). On the other hand, flag F
If LG is on, the detection signal accompanying the guitar performance input from the branch point 15b via the voltage adjusting circuit 41 and the A / D converter 43 is read (S42). Further, the rhythm volume value set by the switch event process is read (S43). Then, an ideal guitar volume value is calculated for the rhythm volume value, and the balance table recorded in advance in the data area of the program memory 31 is referred to (S44). The gain is calculated by dividing by (S4
5). That is, (amplification factor) = (table value) / (input value)
Is calculated. Then, in order to obtain this amplification factor, R1
Any one or a plurality of resistors of R8 to R8 is activated, and the amplification factor of the operational amplifier 45 is adjusted (S46). When the automatic balance adjustment is completed in this way, the automatic adjustment request flag FLG is turned off and the processing is terminated (S4).
7). Finally, the flag FLG is turned off by saying, "If this is left on, the volume will continue to be automatically adjusted to a predetermined balance during the performance, so this will disappear even if I play with the intonation. It will result in a monotonous performance. "

The table referred to in S44 may have different values for each rhythm pattern, or may be settable in the system setting mode or the like. Also, the diode in the operational amplifier 45 and the OUT PO of the CPU
Between RT and HE for OUT PORT protection
An X buffer or a HEX inverter may be inserted, and a peak hold circuit for holding the input peak for a certain period of time may be added before the A / D converter 43 in order to stabilize the detection of the input signal.

Next, the second embodiment will be described. Second
The hardware of the electric guitar of the embodiment is almost the same as that of the electric guitar of the first embodiment, except that the operational amplifier 45 is not provided as shown in FIG. In terms of software, the difference is that the automatic balance adjustment processing has the contents shown in FIG.

First, the automatic adjustment request flag FLG is checked, and if the flag FLG is turned on, the procedure is the same as that of the first embodiment up to the point where the detection signal accompanying the guitar performance is read through the A / D converter 43 (S51). , S52). The following processing is different from that of the first embodiment.

First, it is determined whether or not the signal read in S52 is out of a predetermined volume range (S53). If it is determined that the volume level is out of the predetermined volume range, the adjustment value of the rhythm volume level is calculated according to the volume level of the signal read in S52 out of the volume range, and this is initialized. The final rhythm volume is calculated by adding or subtracting to the set rhythm volume (S54). Then, after changing the set value of the rhythm volume in the RAM 34 to this calculated value (S5
5), the automatic adjustment request flag FLG is turned off, and the process ends (S56). Finally, the flag FLG is turned off for the same reason as in the first embodiment. On the other hand, when NO is determined in S53, the process is ended through S56 without changing the rhythm volume level. That is, the reference value set as a result of the initialization process becomes effective as the rhythm volume.

As described above, according to the electric guitars of the respective embodiments, the rhythm pattern and the guitar performance can be adjusted to the ideal volume balance by only requesting the automatic adjustment, and the troublesome adjustment work is not required. Get better. Since the automatic balance adjustment is performed only once when the balance automatic adjustment switch 61 is turned on, the inflexible guitar performance expressed by the performer is not impaired. Further, since the automatic adjustment is made only when requested, the rhythm volume switch 51 and the guitar volume switch 57 are operated to obtain an arbitrary balance (limited to an ideal balance if the automatic adjustment is not desired. You can freely adjust the volume balance.

In addition to these characteristic effects, according to the embodiment, there are the following effects. According to the electric guitars of the respective embodiments, the performer prepares equipment such as a rhythm box, an amplifier, a mixer, and a speaker, can practice a band without wiring, and can enjoy a full orchestra performance by himself. be able to. Further, since it is different from a complete electronic musical instrument such as a synthesizer, it can be used as it is as an ordinary electric guitar, and can be expressed by a technique peculiar to the electric guitar, for example, vibrato, choking, harmonics and the like. In addition, since it is battery-powered, you can enjoy it anytime, anywhere.

Although the embodiments have been described above, the present invention is not limited to such embodiments. For example, the present invention may be applied to an electric base, and a power source may be a household power source or an automobile battery. It is needless to say that the present invention can be implemented in various modes without departing from the gist of the present invention, for example, by providing a connection cord for the purpose, or by using it exclusively for household power supply.

In the embodiment, the automatic balance adjustment is 1
After the completion of the number of times, it was configured not to adjust the balance until the next request, but not limited to this, the balance adjustment is repeatedly executed for a certain time after the request,
The balance adjustment may not be repeated after some time has passed. In this case, it is advisable to display an LED or turn on the buzzer so as to clearly indicate that the automatic balance adjustment is completed. Of course, it is okay to keep adjusting the balance. For example, second
In the system that adjusts the volume by adjusting the volume of the rhythm pattern as in the embodiment, the intonation in the guitar performance is not erased even if the balance is constantly adjusted, and the rhythm becomes stronger along with the intonation of the performance. You can enjoy the accompaniment to weaken.

Furthermore, in the embodiment, the guitar playing signal and the rhythm box signal are mixed and then amplified, but they may be amplified before mixing and then mixed. In addition to the electric stringed instruments, for example, in a karaoke system, the volume of the singer taken in from a microphone is taken in, and this is processed in the same way as the guitar performance signal of the embodiment is subjected to voltage adjustment and A / D conversion to accompaniment. The volume balance between the song and the song may be automatically adjusted.

[0038]

As described in detail above, according to the accompaniment system and the electric stringed instrument of the present invention, the balance between the volume of the main performance / singing and the volume of the accompaniment can be automatically adjusted, and the volume balance is adjusted. The trouble of work can be eliminated. In particular, according to the accompaniment system of the second aspect and the electric stringed instrument of the seventh aspect, the provision of the automatic adjustment function can eliminate even the delicate performance expression. In addition, claims 4 to 6
According to the electric stringed instrument having the specific configuration described in (1), the automatic balance adjustment can be executed easily and reliably based on the digital value.

[Brief description of drawings]

FIG. 1 is a front view showing the outer appearance of an electric guitar common to the first and second embodiments.

FIG. 2 is a block diagram showing a circuit configuration inside the electric guitar of the first embodiment.

FIG. 3 is a block diagram showing a configuration of an operational amplifier in the electric guitar of the first embodiment.

FIG. 4 is a flowchart of a main routine in the electric guitar common to the first and second embodiments.

FIG. 5 is a flowchart of switch event processing in the electric guitar common to the first and second embodiments.

FIG. 6 is a flowchart of balance automatic adjustment processing in the electric guitar of the first embodiment.

FIG. 7 is a block diagram showing the internal circuit configuration of the electric guitar of the second embodiment.

FIG. 8 is a flowchart of balance automatic adjustment processing in the electric guitar of the second embodiment.

[Explanation of symbols]

1 ... Electric guitar, 3 ... Iron string, 5 ... Main body,
7 ... Pickup, 9 ... ROM card, 11 ...
..Card slots, 13 ... Electronic sound source circuits, 15.
..Mixing part, 15a ... Guitar volume adjusting circuit,
15b ... Branching point, 15c ... Mixing point, 16 ... Operational amplifier, 17 ... Amplification circuit,
19 ... Speakers, 21 ... Headphones, 23 ...
・ Headphone terminal, 25 ... Operation panel, 27 ...
MIDI terminal, 29 ... dry battery, 30 ... CPU,
31 ... Program memory, 32 ... Music waveform memory, 33 ... RAM, 34 ... Automatic performance data memory, 35 ... Sound source circuit, 36 ... Card interface circuit, 37 ... Panel Interface circuit, 38
... MIDI interface circuit, 39 ... D / A
Converter, 41 ... Voltage adjusting circuit, 43 ... A / D converter, 45 ... Operational amplifier, 51 ... Rhythm volume switch, 52 ... Tempo switch, 53 ...
Transpose switch, 54 ... Select switch, 55 ... Part mute switch, 56 ... Changeover switch, 57 ... Guitar volume switch, 5
8 ... Other switches, 59 ... Display unit, 61 ...
Balance automatic adjustment switch

Claims (7)

[Claims] 1. A performance signal output means for detecting a condition of a performer's musical performance or singing and outputting it as a performance signal for emitting from a speaker, and an accompaniment signal corresponding to an accompaniment to the musical performance or singing of the performer. An accompaniment signal output means for outputting, a mixing means for mixing the performance signal and the accompaniment signal, an amplification means for amplifying the mixed signal or each signal before mixing, and based on the mixed and amplified signal In an accompaniment system including a speaker that emits sound, a volume relationship determining means for determining whether or not the volume level of the performance signal and the volume level of the accompaniment signal have a predetermined relationship, and the volume relationship determining means. According to the result of the judgment, if the relationship between the volume level of the performance signal and the accompaniment signal is judged to be out of the predetermined relationship, An accompaniment characterized by further comprising volume level adjusting means for relatively adjusting the volume levels of both signals so that the relationship of the volume levels of both signals fits within the predetermined relationship before mixing by the mixing means. system. 2. The accompaniment system according to claim 1,
It is also provided with request responding means configured to execute the volume level adjustment by the volume level adjusting means only after a balance adjustment request is made, and not to repeat the balance adjustment once the balance adjustment is completed. Characteristic accompaniment system. 3. Pickup means for detecting vibration of a string as analog information, accompaniment information giving means for giving accompaniment pattern as digital information, and D for converting digital information given by the accompaniment information giving means to analog information.
/ A conversion means, mixing means for mixing analog information detected by the pickup means and analog information obtained by the D / A conversion means, and amplification means for amplifying the mixed signal or each signal before mixing. And a loudspeaker that emits sound based on the mixed and amplified signal in a main body, further comprising a volume level of analog information detected by the pickup means and an accompaniment information giving means. The volume level of the digital information to be reproduced has a predetermined relationship, and the volume level of the analog information detected by the pickup means according to the determination result of the volume relationship determination means. The volume level of the digital information given by the accompaniment information giving means is outside the predetermined relationship. If it is determined that the volume level is adjusted, the volume level adjusting means adjusts the relative volume level of the two signals so that the volume level relationship of the two signals falls within the predetermined relationship before mixing by the mixing means. An electric stringed instrument characterized by incorporating and into the body. 4. The electric stringed instrument according to claim 3, wherein the analog information detected by the pickup means is branched and taken out, and the voltage level is adjusted so that the voltage level falls within a predetermined range. A / D converting means for converting the adjusted analog information into digital information, wherein the volume relationship determining means determines the volume level of the analog information based on the digital information obtained by the A / D converting means. An electric stringed instrument characterized in that 5. The electric stringed instrument according to claim 4, wherein an operation amplifier having a variable amplification factor is disposed between the pickup means and the mixing means, and the amplification level of the operation amplifier is adjusted by the volume level adjusting means. An electric stringed instrument characterized by being configured to adjust the balance between the volume levels of analog information from the pickup means and digital information from the accompaniment information giving means. 6. The electric stringed instrument according to claim 4, wherein the volume level adjusting means adjusts the volume level of the digital information output from the accompaniment information adding means, and then D
An electric stringed instrument characterized by being configured to adjust the balance between the volume levels of analog information from the pickup means and digital information from the accompaniment information giving means by giving it to the / A conversion means. 7. The electric stringed instrument according to claim 3, wherein the volume level adjusting means executes the volume level adjustment only after a balance adjustment request is made, and once the balance is reached. An electric stringed instrument characterized in that it also has a request responding means configured not to repeat the balance adjustment once the adjustment is completed.