JPH0750797Y2 - Electronic stringed instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an electronic stringed instrument, and more particularly to a technique for controlling the sound generation of a plurality of musical tones based on one string operation.

[Prior Art and its Problems] Conventionally, the entire electronic stringed instrument has a guitar shape,
It is known that by detecting a string operation state (a vibration start state of a string), a musical tone of a specified pitch is generated and emitted for the string. This electronic string instrument is a string vibration pickup type, because of the difference in the method of detecting string operation.
It is roughly divided into trigger types. With the string vibration pickup type,
The pickup sensor provided independently for each string detects the vibration state of each string, and when the vibration amplitude value is equal to or higher than a predetermined level, the sound is instructed as if the string was operated. The pitch is determined based on the vibration frequency. On the other hand, in the trigger type, a trigger switch is provided independently for each string. This trigger switch is turned on by the vibration of the strings. When the trigger switch is turned on, the sound is instructed as if the string was operated. At this time, the pitch is specified by a fret switch or the like provided separately.

However, in both of the string vibration pickup type and the trigger type, the musical tone generated by the detection of the string operation is only one musical tone corresponding to the string played.

Further, in the electronic musical instrument disclosed in Japanese Patent Laid-Open No. 60-501276, a group trigger key and a master trigger key are provided, and by these operations, a plurality of strings belonging to a group and all strings are triggered at the same time. Multiple musical tones are generated by one operation. However, with this electronic musical instrument,
A plurality of strings were triggered at the same time, and a plurality of musical tones were sounded at the same time, and it was not possible to generate arpeggios etc. by sequentially staggering them at different times. In addition, in order to generate a plurality of musical tones for a plurality of strings in various combinations by one operation, it is necessary to provide the number of group trigger keys according to the type of the combination, resulting in high cost and The operation was also difficult.

[Object of the Invention] The present invention has been made under the circumstances described above, and its object is to perform a plurality of strings in various modes by a single string operation. Similarly to the above, it is to inexpensively provide an electronic stringed instrument capable of generating and producing a plurality of musical sounds in various modes.

[Summary of the Invention] In order to achieve the above-mentioned object, the present invention is provided with a plurality of string operation detecting means for detecting a string operation, and a plurality of string operation detecting means are provided corresponding to each of the string operation detecting means. Has a plurality of pitches designated by the pitch designating means when any one of the plurality of string manipulation detecting means detects the string manipulation. The main point is to have a musical tone generation instructing means for instructing to generate a plurality of musical tones in a mode based on which of the string operation detecting means detects the string operation.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

Configuration <Overall Appearance> FIG. 1 shows the overall appearance of the electronic stringed instrument according to this embodiment.
As shown in the figure, the entire stringed instrument has the shape of a guitar composed of a body portion 1, a neck 2 and a head 3, and a plurality of strings 4 for playing the stringed instrument are stretched in the length direction thereof. Also, the body 1
Includes a parameter setting switch group (panel switch group) PSW for setting various parameters, a tone select switch group 5a for selecting a tone color, a mute switch 5b for quickly muting a musical tone being sounded, and a rhythm. Rhythm select switch group 5c for selecting patterns,
In addition to a drum pad group 5d for instructing a percussion instrument sound by a striking operation, a performance mode changeover switch 5e for switching a performance mode corresponding to a sounding instruction control pattern is provided.

One end of the string 4 is adjustably supported by a peg 7 provided on the head 3, and the other end of the string 4 extends on the finger board 8 and is inside the string trigger switch storage case 9 on the right side of the body 1. It is fixed. Inside the fingerboard 8 is a fret switch group FS for pitch designation.
Ws are provided in a matrix form, and by pressing on the strings 4 between the frets 6, the corresponding fret switch FSW is turned on.

On the other hand, the string trigger switch TSW is housed in the case 9, and the string trigger switch TSW is turned on by performing an operation such as flipping the string 4 or squeezing it (hereinafter sometimes referred to as “trigger”). By this, the musical sound is started to be generated. Details of the string trigger switch TSW will be described later.

<Mode changeover switch> As shown in FIG. 2, the mode changeover switch 5e is composed of a rotary switch having one movable contact M and five fixed contacts F0 to F4, and each fixed contact F0 to Selective contact of movable contact M to F4 causes mode 0
~ 4 is set.

Here, the functions of modes 0 to 4 will be described.

Mode 0 ... If one or more strings are triggered,
Normal mode that is used to generate the specified pitch tone only for the triggered strings.

Mode 1 ... When one string is triggered, it is a simultaneous sounding mode used when sounding tones of all strings including the triggered string at the specified pitch at the same time.
If you set this mode, you can get chords.

Mode 2 ... When one string is triggered, the musical tones of all strings including the triggered string are shifted from the 6th string side to the 1st string side by the specified pitch. It is a different-time sounding mode used when sounding in sequence with
This mode allows you to obtain arpeggios (dispersed chords).

Mode 3 ... When one string is triggered, multiple musical tones related to all strings including the triggered string are generated in various patterns according to the type of the triggered string while shifting the time. This is the arpeggio mode used for, which allows you to obtain arpeggio sounds with various pronunciation patterns.

Mode 4: A mode used when changing the number of musical tones generated according to the type of the detected string when one string is triggered.

<String trigger switch> Fig. 3 shows an example of the structure of the string trigger switch TSW. As mentioned above, the string trigger switch TSW is the string 4 on the body 1.
It is switched by the string operation. As shown in the figure, a switch mount 218 is provided on the body 1, and the switch mount 218 has a part that is formed to be high. The support portion 218a is provided in the. The supporting portion 218a is formed with a number of groove portions 218b corresponding to the number of the strings 4 used. A metal contact plate 219 is attached to the rear edge side of the supporting portion 218a provided with the groove 218b, and an insertion hole 219a is provided at a position corresponding to each string 4 of the contact plate 219.
A conductive member 220 integrally connected to each string 4 is attached to the insertion hole 219a. The conductive member 220 is a metal rod-shaped member having a predetermined length, and has a locking hole 220a for locking the string 4 at the tip, and the string 4 is inserted through the locking hole 220a. It is locked. A first retaining ring 220b is provided behind the locking hole 220a, and a second retaining ring 220c is provided at a predetermined length from the first retaining ring 220b. The first retaining ring 220b and the second retaining ring 220c are the above-mentioned conductive members.
The purpose of this is to prevent the pair of insulating members 221 and 221 mounted on the 220 at a predetermined interval from each other from moving in the longitudinal direction of the conductive member 220. A step portion is provided in each of the insulative members 221 and 221, and a spring coil 222 as a conductive flexible member is bridged over the step portion. This conductive member 2
A support shaft 220d formed in a single step is provided behind the second retaining ring 220c of 20, and the rear end of the support shaft 220d is in the groove 218b of the support 218a and the insertion hole 219a of the contact plate 219.
The inside of the contact plate is inserted through the inside of the contact plate 219 and the rear end of the contact plate is pivotally locked around the insertion hole 219a of the contact plate 219 by a stopper 223 having a hemispherical shape. Therefore, the rear end of the conductive member 220 is swingably locked by the support shaft 220d, and the other free end is supported so as to be stretched on the string 4 in a stretched state. The contact plate corresponding to each of the insertion holes 219a
The protruding piece 219b formed on the upper end of 219 is inserted and fixed to a predetermined portion of the printed circuit board 224 provided on the support portion 218a, and is connected to the wiring pattern provided on the printed circuit board 224 via the solder 219c. There is. In addition, the conductive member 220
On the other hand, a lead wire 222a drawn from one end of a coil spring 222 attached via an insulating member 221.
Also, solder 222 on another wiring pattern of the printed circuit board 224.
connected through b.

The trigger switch TSW shown in the above is a conductive member 220.
Is a first contact, and the coil spring 222 is a second contact. In the steady state, a gap corresponding to the thickness of the insulating member 221 is maintained between the coil spring 222 and the conductive member 220, and both are in an insulating relationship. However, when the string operation state (the state in which the string 4 is pulled from the rest state and then released from the pulled state), the release energy of the string 4 causes the center portion of the coil spring 222 to swing, resulting in conduction. Member 220 and coil spring 222 contact each other, and therefore trigger switch TSW
Will be switched on.

<Overall Circuit Configuration> FIG. 4 shows the overall circuit configuration of the electronic stringed instrument according to this embodiment. A microcomputer 30 controls the entire electronic stringed instrument.
Done by. That is, the string trigger switch group TSW
A latch circuit 40 including latch elements (flip-flops) equal to the number of strings is provided as an interface between the string 30 and the microcomputer 30, and the string trigger switch TSW provided in each string 4 is turned on to correspond to the latch circuit 40. The latch element is set. Then, the microcomputer 30 samples the content of each latch element in the string trigger detection process described later, and compares the sampled content with the previous sampled content to detect which string has started to vibrate, and With respect to the latch element of the string that has started, the latch element is reset after a lapse of a predetermined time. As a result, the string trigger is secured and detected quickly.

The switch status detector 50 includes a panel switch group 5,
The panel switch group 5 including the mode changeover switch 5e and the on / off state of each switch of the fret switch group FSW are detected, and are configured by known circuits. The on / off signal of each switch detected by the switch status detection unit 50 is sent to the microcomputer 30.
Is read out and used as control data such as pitch and tone color.

The musical tone generation circuit 60 generates a musical tone signal based on a string trigger signal given from the microcomputer 30, ON / OFF signals of various switches, and the like. The tone signal is converted into an analog signal by the D / A converter 70, amplified by the amplifier 80, and emitted from the speaker 90.

Operation <General Flow of Microcomputer> FIG. 5 shows a general flow of the microcomputer 30. When the power is turned on, the microcomputer 30
First, the switch state of the mode changeover switch 5e is inspected, and the performance mode setting process G1 according to the switch state is inspected.
I do. When the performance mode setting process is completed, then G2
To G8, and when that is completed, the process returns to G1 of the performance mode setting process, and the processes from G1 to G8 are repeated. In the string trigger detection process G2, the output of the latch circuit 40 shown in FIG. 4 is fetched, the presence or absence of a trigger for each string 4 is determined, and when a trigger (start of string vibration) is detected, the tone generation circuit 80 is controlled. And tones are generated in various modes according to the above modes. In the fret state detection processing G3, the fret switch group FS is sent via the switch status detection circuit 50.
Read the status of each W switch. Then, the fret state change determination process G4 determines a change in the fret state (change in pitch designation), and if there is a change, the fret state change process G5 is executed. In this process G5, when the string pressing position of the fret changes, the string pitch is reset to the corresponding pitch. Next, in the panel switch state detection process G6, the performance mode changeover switch of the panel switch group 5 is selected. The status of each switch other than 5e is read via the switch status detection circuit 50. Then, in the panel switch state change determination processing G7, the performance mode changeover switch 5e
If there is a change in the state of the panel switch other than, and if there is a change, the panel switch state change processing G8, the required processing, for example, the tone color for the tone generating circuit 80, the effect (after effect) and the like setting processing .

<Performance Mode Setting Process> Next, details of the performance mode setting process G1 will be described with reference to FIG. In the description of this section, the switches formed by the movable contact M and the fixed contacts F0 to F4 shown in FIG. 2 will be referred to as switches SW0 to SW4.

In the performance mode setting process G1, the state of the mode changeover switch 5e is read through the switch status detection circuit 50, and first, it is determined whether or not the switch SW0 is on (step G1
1). As a result, when the switch SW0 is on, "0" is written in the performance mode buffer (step G12). Switch S
When W0 is off, it is further determined whether or not switch SW1 is on (step G13), and when it is on, "1" is written in the performance mode buffer (step G14). If the switch SW1 is off, the process proceeds to step G15 to determine whether or not the switch SW2 is on. As a result, when switch SW2 is on, write "2" to the performance mode buffer (step G1
6) If it is off, it is further determined whether or not the switch SW3 is off (step G17). When it is determined that the switch SW3 is on, the process proceeds to step G18, "3" is written in the performance mode buffer, and when it is determined that the switch SW3 is off, the process proceeds to step G19.
Write "4" to the performance mode buffer. Note that step G1
After writing to the performance mode buffer at 2, G14, G16, G18, and G19, exit from this flow.

<Fret Switch Process> Next, the fret switch process performed in the fret state detection process G3, the fret state change determination process G4, and the fret state change process G5 in FIG. 5 will be described with reference to FIG.

In the fret switch process, first, "1" indicating the first string is stored as the string number in the pitch designation register C (step G101). Then, the process proceeds to step G102 and the following process is performed. That is, the state of the fret switch group corresponding to the string number (in this case, the first string) indicated by the pitch designation register C is read, and the highest fret switch is selected from the turned-on fret switch FSW. And the note name (pitch) of the highest note is written in the fret buffer of the string (first string in this case) indicated by the pitch specification register C. However, when all the fret switches corresponding to the strings indicated by the pitch designation register C are off, the note name (pitch) of the open string of the string indicated by the register C is written in the corresponding fret buffer.

When such processing is completed, the process proceeds to step G103,
The content of the pitch designation register C is incremented by "1" in order to perform the same processing for the next string (second string).
Then, it is determined whether or not the content of the pitch designation register C is "7" or more. When it is "6" or less, the process returns to step G102 and the same processing is repeated. If it is "7" or more, it means that the fret switch processing has been performed for all the strings (the first string to the sixth string), so that the process exits from this flow.

<< Mode-Specific Processing >><Mode 0 Processing> By the above-described performance mode setting processing, "0" is written in the performance mode buffer. Therefore, in normal mode 0, the trigger-detected fret for the string is generated. The note name (treble) data in the buffer is read, this pitch data is output to the tone generation circuit 60, and the tone of the tone corresponding to the fret operation position of that string is played by the string operation of one string. Normal sounding processing is performed to generate only one.

<Processing of Mode 1> Mode 1 is a case where an arbitrary string operation is performed.
At the pitches (pitch specified by the fret switch) written in the fret buffers for all strings including the string related to the string operation, the musical tones corresponding to all the strings are played at the same time, and chords are played. This is the mode to make the sound.
In this mode 1 processing, the microcomputer
When the 30 detects a trigger, it reads the pitch data in the fret buffer for all strings, regardless of which string from the 1st to 6th strings, and uses this data as a musical note. All the signals are simultaneously input to the generation circuit 60, and at the timing of the string operation, the musical tones having the pitches according to the pitch data are simultaneously generated. As a result, for example, as schematically shown in FIG. 8A, all the fret switches of the first string to the sixth string are off. When only the first string is triggered, or when only the sixth string is triggered, the musical tones of the open string pitches of all the strings are sounded at the same time, and a chord is obtained.

<Processing of Mode 2> In Mode 2, when an arbitrary string operation is performed,
In this mode, musical tones with pitches corresponding to the pitch data in the fret buffer for all strings including the string are shifted in time and sequentially pronounced to obtain an arpeggio sound.

In the processing of mode 2, as shown in FIG. 9, first, it is determined whether or not there is a string trigger (step G201). Then, if there is a string trigger, in order of the 6th string → the 1st string, the specified pitch-related musical tones of the string are sounded, and in order to obtain the arpeggio, the string number RG is set to “6” in the sounding string register RG. "Is set, and the tone generation command for the tone of the pitch in the fret buffer for the sixth string is output to the tone generation circuit 60 (step G20.
2). Next, the quarter note that corresponds to the triggered string,
A value corresponding to the note length of an eighth note, a sixteenth note, etc. is set in a predetermined register, the arpeggio speed counter is started (step G203), and this flow is exited. If it is determined in step G201 that there is no string trigger, the flow immediately exits.

When the arpeggio speed counter finishes counting the set value and the time corresponding to the set value elapses, the counter interrupt process of FIG. 10 is performed. In this counter interrupt process, first set the content of the sound string register RG to "1".
Decrement only (step G204). Then, it is determined whether or not the sound string register RG is "0" (step G2
05), if it is not "0", it means that there is an unproduced musical tone among the musical tones of the pitch specified for each string. The musical tone generation command of the pitch in the fret buffer corresponding to the string indicated by is output to the musical tone generation circuit 60 (step G206),
Get out of this flow. Then, if the flow exits this flow via step G206, the process returns to the flow of FIG. 5, and every time the arpeggio speed counter finishes counting the set value, it comes to this flow and repeats the same interrupt processing. On the other hand, when it is determined that the tone generation string register RG is "0", the counting operation of the arpeggio speed counter is stopped (step G207), the flow is exited and the process returns to the flow shown in FIG.

With such processing, in Mode 2, the same operation as in the case where the string is operated from the 6th string to the 1st string in sequence is performed on the string that has been operated only by operating one string. It is automatically performed at the corresponding predetermined speed, as shown in FIG.
The arpeggios shown in (c) and (d) are pronounced.

<Processing of Mode 3> When Mode 3 is set and one arbitrary string operation is performed, according to the arpeggio pattern as shown in FIGS. 8 (e), (f), and (g). A predetermined musical sound is output.

In this mode 3 processing, as shown in FIG. 11, first, it is determined whether or not there is a string trigger for the first string (step G3).
01). As a result, if there is a string trigger for the first string, the process proceeds to step G302, and based on the contents of the fret buffer for each string, the rule of the arpeggio pattern for the first string (the details will be described later). Create a plurality of pitch (pitch name) data according to the above, and write these pitch data in the arpeggio buffer in the order in which they should be pronounced.

Next, the start address and end address indicating in which address space of the arpeggio buffer these pitches were written are stored in registers RS and RE, respectively (step G303). Then, the tone generation command for the tone at the pitch of the start address is issued to the tone generation circuit 60 (step G304),
A value corresponding to a predetermined note length according to the rule is set in a predetermined register, an arpeggio speed counter is started (step G305), and this flow is ended.

If it is determined in step G301 that there is no string trigger input for the first string, the process proceeds to step G306, where the second string through the sixth string are input.
By the string trigger input of the string, similarly to the case of the first string, to generate a note name according to the predetermined arpeggio pattern corresponding to the string related to the string trigger input, based on the contents of the fret buffer for each string, Write the note names in the pronunciation order to the arpeggio buffer. Then, the process proceeds to step G303 and the subsequent steps.

FIG. 8 (e) is a diagram showing an example of sounding in accordance with the rules of the arpeggio pattern when only the first string is string-operated in the state where all strings are open strings under the mode 3 setting. As can be inferred from this figure, in the rule of the arpeggio pattern for the first string under the setting of mode 3, the musical tones to be pronounced from the first string to the sixth string are the tenth string in the order of the sixth string → the first string. At each pitch interval corresponding to a sixth note, a musical tone with an open string pitch is pronounced, and as the tones that should be pronounced from the 7th to the 10th, in the order of the 5th string → the 2nd string, the 16th notes It is defined that a musical tone having an open string pitch which is higher than the open string pitch by two octaves is generated for each corresponding pitch interval. Therefore, when all strings are open strings and only the first string is struck, in step G302 of FIG. 11, the arpeggio buffer is sequentially written with the note names as shown in FIG. Get caught.

FIG. 8 (f) is a diagram showing an example of pronunciation according to the rules of the arpeggio pattern when only the second string is plucked under the condition that all the strings are open strings under the setting of mode 3. Is. As can be inferred from this figure, in the rule of the arpeggio pattern when only the second string is played under the setting of the mode 3, the musical tones to be pronounced from the first string to the sixth string are the sixth string → In the order of the 1st string, the open string pitched tone is pronounced at intervals equal to sixteenth notes,
The tones that should be pronounced from the 10th to the 10th are the 2nd string → the 5th string
It is defined that a musical tone with an open string pitch is generated in the order of strings at the same pitch intervals.

FIG. 8 (g) is a diagram showing a pronunciation example in accordance with the rules of the arpeggio pattern when only the sixth string is plucked under the condition that all the strings are open strings under the setting of mode 3. Is. As can be inferred from this figure, in the rule of the arpeggio pattern when the sixth string is played under the setting of mode 3, the musical tone of each open string pitch is changed from the sixth string to the fourth string.
Strings → 5th string → 3rd string → 4th string → 2nd string → 3rd string → 1st string → 2nd string → 3rd string in this order at intervals equal to the sixteenth note Has been defined.

The above arpeggio speed counter will show the steps in Fig. 11.
When the value corresponding to the tone length set in G305 has been counted and the time of the tone length corresponding to the set value has elapsed, the counter interruption process of FIG. 13 is performed. In this counter interrupt processing, first, the content of the register RS is incremented by "1" (step G306). And register
It is determined whether the contents of RS have become larger than the end address in the register RE (step G307). As a result, if it is not large, it means that all the tones of the note name in the arpeggio buffer have not been pronounced yet, so a command is issued to mute the tones that are being pronounced, and the tone at the address indicated by register RS is The name is read from the arpeggio buffer, a musical tone generation command for the musical tone of that tone name is output to the musical tone generating circuit 60 (step G308), and this flow is exited. Then, if the flow exits this flow via step G308, the process returns to the flow of FIG. 5, and every time the arpeggio speed counter finishes counting the set value, it comes to this flow and repeats the same interrupt processing. By this iterative process, the note names in the arpeggio buffer as shown in FIG. 12 are sequentially read in the order of addresses, and the pronunciation of the tone with the read note names is instructed, as shown in FIG. 8 (e). An arpeggio with a different pattern is pronounced.

On the other hand, when it is determined that the content of register RS is larger than the end address in register RE, it means that all the tones of the note name in the arpeggio buffer have been pronounced at the specified pitch. A command is issued to mute the sound, stop the counting operation of the arpeggio speed counter (step G309), exit this flow, and return to the flow shown in FIG.

<Processing of Mode 4> Under the setting of Mode 4, if any one string is plucked, it is specified according to whether the plucked string is the first string, the sixth string, or the like. It is selected whether to generate one musical tone of a different pitch or a plurality of musical tones at the same time. For example, if all strings are open strings,
When the sixth string is selectively struck, as shown in FIG. 8 (h),
It becomes as shown in (i). That is, if only the first string is triggered, one tone of the open string pitch is produced. When only the second string is triggered, two musical tones of the open strings of the first string and the second string are sounded simultaneously. If you only triggered the 3rd string, the 1st, 2nd, and 3rd strings
Three tones of the open string pitch are produced at the same time. Fourth
When only the strings are triggered, four tones of the open string pitch from the first string to the fourth string are sounded at the same time. When only the fifth string is triggered, five tones of the open string pitch from the first string to the fifth string are sounded at the same time. When only the sixth string is triggered, six tones of the open string pitches from the first string to the sixth string are simultaneously pronounced.

As described above, according to this embodiment, the musical tone similar to that when a plurality of strings are string-operated in various modes can be swiftly and easily provided only by performing string-string operation on any one string. Obtainable. Further, since such a function is realized by an internal process by merely changing the mode without providing a plurality of group trigger keys for realizing the above-described various aspects, it is advantageous in terms of price and is easy to operate. It will be easier.

The present invention is not limited to the above embodiment,
For example, the method of detecting a percussion input is not the string trigger method as in the present embodiment, but the vibration itself of each string is detected independently, and the timing of starting and ending the sound generation and the pitch are generated based on the detected data. It is also possible to apply to a string vibration pickup type electronic musical instrument for controlling the. Further, the switch for switching the tone generation instruction control pattern (performance mode) may be, for example, a key switch other than the rotary switch.

[Advantage of Invention] As described in detail above, according to the present invention, any one
Only by performing string operation on one string, it is possible to quickly and easily obtain a musical tone similar to that when multiple strings are operated in various ways. However, it is easy to perform with rich musical expression.

[Brief description of drawings]

FIG. 1 is an external view of an electronic stringed instrument according to an embodiment of the present invention,
2 is a schematic diagram of a mode changeover switch, FIG. 3 is a configuration diagram of a string trigger switch, FIG. 4 is an overall circuit configuration diagram of the electric stringed instrument, and FIG. 5 is a diagram showing a general flow of operation of a microcomputer, FIG. 6 is a diagram showing a detailed flow of the performance mode setting process, FIG. 7 is a diagram showing a flow of the fret switch process, FIG. 8 is a diagram schematically showing the contents of the process for each mode, and FIG. 9 is a mode. The figure which shows the flow of the processing of No. 1,
FIG. 10 is a diagram showing the flow of counter interrupt processing in mode 2, FIG. 11 is a diagram showing the flow of processing in mode 3, FIG.
FIG. 12 is a diagram showing an example of contents of the arpeggio buffer used in the process of mode 3, and FIG. 13 is a diagram showing a flow of the counter interrupt process in the mode 3. 4 ... String, 5e ... Performance mode selector switch, 30 ... Microcomputer, 60 ... Music tone generation circuit, FSW ... Fret switch, TSW ... String trigger switch.

Claims (4)

[Scope of utility model registration request] 1. A plurality of string operation detecting means for detecting a string operation, a pitch specifying means capable of specifying a plurality of pitches at the same time, and one of the plurality of string operation detecting means, When a string operation is detected, an instruction is issued to generate a plurality of musical tones each having a plurality of pitches designated by the pitch designating means, in a mode based on which string operation detecting means detects the string operation. An electronic stringed musical instrument characterized by comprising: 2. A utility model registration claim characterized in that the musical tone generation instructing means issues an instruction to generate a number of musical tones based on which string operation detecting means detects a string operation. An electronic stringed instrument according to the first section. 3. The tone generation instruction means is in the order based on which of the string operation detecting means detects the string operation,
The electronic stringed instrument according to claim 1, wherein an instruction is issued to sequentially generate the plurality of musical tones. 4. A practical use characterized in that the musical tone generation instructing means issues an instruction to generate the plurality of musical tones with a tone length based on which of the string operation detecting means detects a string operation. The electronic stringed instrument according to claim 1 of the new model registration claim.