JPH0786751B2 - Electronic stringed instrument - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic stringed instrument such as an electronic guitar, and more particularly to an electronic stringed instrument capable of adding a delay effect in which a delay time is variably controlled according to a performance operation.

[0002]

2. Description of the Related Art An electronic stringed instrument is an electronic musical instrument which detects a string plucking operation (picking operation) and electronically generates a musical tone having a pitch corresponding to a fret operating position of the string.

By the way, in the electronic keyboard musical instrument, several kinds of delay times (delay times) can be set by operating a switch, and a plurality of musical tones are generated by shifting by the set delay times to obtain musical tones having a delay effect. Is known (see Japanese Patent Publication No. S60-40620).
.

[0004]

However, in the case of the above electronic keyboard instrument, since the delay time is set by the switch operation, the delay times that can be set are at most several types, and there are subtly different delay times. It was impossible to generate a large number of musical tones. In addition, since the delay time is set regardless of the actual keyboard operation, the delay effect does not always correspond to the playing style of the performer.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic stringed instrument in which the delay time of each generated musical tone changes variously in response to a performance operation.

[0006]

In order to solve the above problems, the electronic stringed instrument of the present invention is a musical instrument for generating musical tones.
A string operation detection hand that detects the string operation that indicates imming
Setting pitch information corresponding to the stage and fret operation position
Pitch information setting means, string operation and fret operation
Based on predetermined parameters related to at least one of
Delay time setting means for setting the delay time based on
And the string operation detected by the string operation detection means
By the pitch information setting means at the timing corresponding to
Generates a musical tone with a pitch corresponding to the set pitch information
And the timing corresponding to the string operation.
The delay time setting means
The pitch information is set at a time interval corresponding to the delay time.
A musical tone that instructs to generate a musical tone of the pitch corresponding to the information
And a generation instruction means .

In such an electronic stringed instrument, the di
The parameters referred to by the delay time setting means are, for example,
For example, the strength of the string operation detected by the string operation detection means,
The type of string operation member for which string operation was detected, and fret operation
Pitch information and the like set corresponding to the work.

In the electronic stringed instrument as described above,
For example, the delay time setting means sets the delay time based on delay time information indicating a delay time corresponding to an arbitrary value that can be taken by at least one of the parameters. Further, a delay time information changing means for changing the delay time information referred to by the delay time setting means may be provided.

In the electronic stringed instrument as described above,
For example, the pitch information setting means has a fret switch for sensing the fret operation position with respect to the strings. In the electronic stringed instrument as described above, for example, the pitch information setting means includes a pickup for converting the vibration of the string into an electric signal, and a pitch extraction for extracting pitch information of the string vibration from the electronic signal obtained by the pickup. And means.

In the electronic stringed instrument as described above,
For example, the pitch information setting means propagates an ultrasonic wave from one end of a string, and an ultrasonic wave transmitting / receiving means for receiving an echo generated by the ultrasonic wave propagating through the string being reflected by a fret in contact with the string, And fret operation position determining means for determining the fret operation position based on the time from when the ultrasonic wave is propagated to the strings until the echo is received.

[0011]

[ Function ] The electronic stringed instrument having the above-described structure is capable of string operation.
When this is done, the string operation is detected by the string operation detection means.
Then, the fret operation position is continued by the pitch information setting means.
The pitch information corresponding to the position is set. And delay
The time setting means performs the string operation and the fret operation.
Based on at least one predetermined parameter
The delay time is set and the tone generation instruction means
Instruct to generate pitched musical tones corresponding to pitch information
The time interval corresponding to the delay time.
The pitch tone corresponding to the pitch information.
To instruct.

This predetermined parameter is, for example, the bullet
The strength of the string operation detected by the string operation detection means,
Corresponding to the type of detected string operation member and fret operation
Pitch information that is set according to the above.

The delay time setting means sets the delay time based on delay time information indicating a delay time corresponding to an arbitrary value that can be taken by at least one of the parameters.

Thus , for example, a string operation is detected.
The type of string operation member, strength of string operation, fret operation
The delay time changes in accordance with the pitch information or the like set corresponding to, and a plurality of musical tones of the pitch corresponding to the fret operation position are generated at time intervals corresponding to the delay time.

Therefore, performances such as string operation and fret operation
Since the delay time changes subtly according to the operation , it is possible to express the musical performance with various delay times.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. The present embodiment is realized as an electronic guitar in which six strings are stretched on the body and the desired string is picked while the frets provided at the lower part of the string are pressed with fingers. There is. In addition, the first to sixth strings are assigned string numbers 1 to 6, respectively. {Structure of the First Embodiment} FIG. 1 shows a string vibration period (pitch) extracted from a string vibration generated when a string is picked.
FIG. 3 is a system configuration diagram of a first embodiment when the present invention is applied to a so-called pitch extraction type electronic string instrument that detects a fret operation position from the pitch.

In particular, although not shown, a pickup for converting the vibration of the string into a corresponding electric signal is provided corresponding to each string, and the output a _{1 of} the pickup is amplified by the amplifier 11 to obtain the LPF ( Low-pass filter) 12
In addition, the LPF 12 removes the harmonic components to form the waveform signal b _{1 and the} pitch extraction unit 13 and the level detection unit 1
Join 4

The pitch extraction unit 13 passes an interrupt signal INT _{a to the} CPU 15 at the zero cross point immediately after the waveform signal b ₁ reaches the positive peak point or the negative peak point.
Add (immediately after positive peak) or INT _b (immediately after negative peak). Further, the signal Max is detected when a positive peak point is detected, and the signal Min is detected when a negative peak point is detected.
To the level detector 14.

Although not shown in the drawing, the level detector 14 responds to a sampling signal from the CPU 15 in response to a sampling signal.
It has an A / D converter that converts the analog waveform signal b ₁ applied from the LPF ₁₂ into, for example, 8-bit digital data, and the pitch extraction unit 13 outputs signals Max and Mi.
When n is added, the instantaneous value (digital data) of the waveform signal b ₁ at that time is stored in a latch (not shown).
The digital data latched when the signals Max and Min are applied are the positive peak value and the negative peak value (when Min is applied) of the waveform signal b ₁ , respectively. Upon receiving a read request from the CPU 15, the level detection unit 14 outputs the latched positive peak value or negative peak value as C
Output to PU15.

Further, the level detection unit 14 also reads the instantaneous value of the waveform signal b ₁ by C when the CPU 15 requests the reading.
Output to PU15. A circuit 10 including the amplifier 11, the LPF 12, the pitch extractor 13, and the level detector 14.
Are provided for each string and are time-divisionally controlled by the CPU 15. Then, the output of each circuit 10 is input to a predetermined port of the CPU 15.

The CPU 15 is a microprocessor for controlling musical sounds and controlling the entire system in accordance with a program stored in a ROM (read only memory) (not shown), and stores control information for adding a delay effect. It has a delay characteristic information storage unit 15a.

The delay characteristic information storage unit 15a stores four kinds of delay time information D _a , D _b , D _c , D _d corresponding to the detection level of the string vibration as shown in FIG.
In FIG. 2, the horizontal axis is the maximum peak value Pmax of the waveform signal b ₁ of the string vibration read out from the level detection unit 14 by the CPU 15 until the pitch period is extracted, and the vertical axis is the B channel PCM sound source for the A channel PCM sound source unit 16. Part 1
7 is a delay time t for generating musical tones.

The peak value of the waveform signal b ₁ digitally converted by the level detector 14 takes a value from -128 to 127, and the maximum peak value Pmax is the CPU 15 before the pitch extraction.
Is equal to the maximum absolute value of the read peak values.

The delay characteristic setting section 16 selects one of the four pieces of delay characteristic information D _a , D _b , D _c , D _d stored in the delay characteristic information storage section 15a. Is for selection,
The delay characteristic information is selected by operating a switch or the like.

Although not specifically shown, the PCM tone generators 17 and 18 represent actual musical tone waveforms by PCM (Pulse Code Modul).
ation) and has a waveform memory that stores the
A tone corresponding to the tone control information added from the CPU 15 is generated.

The musical tones generated from the A channel PCM tone generator 17 and the B channel PCM tone generator 18 are added by an adder 19, and the added value is added to a D / A converter 21 via a latch 20. Then, after being converted into an analog tone signal by the D / A converter 21, it is amplified by the amplifier 22 and emitted from the speaker 23 to the outside. {Operation of First Embodiment} Next, the operation of the first embodiment configured as described above will be described.

First, the general operation of generating a musical sound will be described. First, the four types of delay characteristic information D _a , D _b , D _c , D _d shown in FIG. 2 and stored in the delay characteristic information storage section 15a by operating the switches of the delay characteristic setting section 16 are described.
The desired delay characteristic information is selected from among these.

Subsequently, when a picking operation is performed, the pitch extraction unit 13 extracts the pitch period of the fundamental wave of the string vibration from the electric signal a ₁ corresponding to the string vibration detected by the pickup, and the extracted pitch. The pitch information corresponding to the cycle is generated. Then, again, the maximum peak value Pma of the waveform input until the pitch period is extracted is extracted.
A based on x and the string number of the picked string
The delay time t _d for the tone generation of the PCM tone generator 17 of the channel is determined. Then, first, a musical tone corresponding to the created pitch information is generated from the A channel PCM tone generator 17, and then, if the delay time t _d elapses from the tone generation, the B channel PCM tone generator 1 is generated.
8 to generate a musical tone having the same pitch as the PCM tone generator 17 of the A channel.

The delay time t _d is determined according to the delay characteristic information selected by the switch operation of the delay time information setting section 16. For example, when the maximum peak value Pmax is “60”, the delay characteristic information D _c
Is selected, the delay time t becomes 0.25 ms, and if the delay characteristic information D _b is selected, the delay time t
Is 0.375 ms (see Fig. 2). Also, when the delay characteristic information D _a and D _d are selected, the delay time t corresponding to each characteristic information is set.

As described above, the maximum peak value of string vibration
After setting the delay time t based on Pmax,
For the string picked for the delay time t
Multiply the corresponding weighting factor g (i) (where i is the chord number)
The final delay time t _d(= G (i) · t) is set
Is determined.

That is, as schematically shown in FIG. 3, when the pitch period is extracted (determined), the PCM of the A channel is obtained.
A tone having a pitch corresponding to the pitch cycle is immediately generated from the sound source section 17, and corresponds to the maximum peak value Pmax of the peak height of the string vibration input until the pitch cycle is extracted and the string number i of the picked string. After the delay time t _d determined based on the weighting coefficient g (i) has elapsed, a tone having the same pitch as that of the PCM tone generator 17 of the A channel is generated from the PCM tone generator 18 of the B channel.

This delay time t _d is, for example, about 0.05 ms.
It is controlled in the range of ~ 0.5 ms. Therefore, since the delay time t _d changes depending on the strength of the picking operation and the string on which the picking operation is performed, it is possible to play with a variety of tones. In addition, the delay characteristics can be freely selected from four types, so you can change the delay characteristics according to the song you are playing, and you can play the same song with various delay characteristics, enabling rich performance expressions. Become. {Detailed operation of the first embodiment} Next, the operation of the first embodiment configured as described above will be described in detail.

When any one of the first to sixth strings is picked and string vibration is started, an electric signal a ₁ corresponding to the string vibration is output from the pickup corresponding to the vibrating string. It Then, the electric signal a ₁ is amplified by the amplifier 11 and added to the LPF 12,
The harmonic component is removed by F12, and the waveform signal b ₁ of the string vibration is output to the pitch extraction unit 13 and the level detection unit 14.

The pitch extraction unit 13 is arranged to generate a waveform signal b₁Is positive
When reaching the peak point, the level detection unit 14 outputs the detection signal Max.
In addition to the waveform signal b₁Passes through the zero-cross point
And interrupt signal INT_aIs added to the CPU 15. Also
The pitch extraction unit 13 outputs the waveform signal b ₁Reaches the negative peak point
Then, the detection signal Min is applied to the level detection unit 14, and then the wave is detected.
Shape signal b₁Signal passes through the zero-cross point, interrupt signal I
NT_bIs added to the CPU 15. On the other hand, the level detector 14
Is a fixed cycle by the time division control signal applied from the CPU 15.
And the waveform signal b₁Is converted to digital data, and
When the signal Max is applied from the peak extraction unit 13, digital conversion is performed.
Waveform signal b₁Positive peak value P of₊The signal Min
Waveform signal b that has been digitally converted when₁The negative pie
Value P_-Hold.

When the interrupt signal INT _a is added, the CPU 15 reads and stores the added time T _a from a real time clock (not shown), and
The positive peak value P ₊ is read from the level detector 14 and stored.

When the interrupt signal INT _b is added, the added time T _b and the negative peak value P ₋ are similarly stored. The CPU 15 uses the interrupt signal IN
The above process is repeated every time T _a and INT _b are added.

As described above, the CPU 15 responds to the interrupt signal applied from the circuit 10 provided for each string.
The latest positive peak value P ₊ of the string vibration of each string, the negative peak value P _−, the time t _{a at which} the positive zero cross occurs, and the time t _{b at} which the negative zero cross occurs are stored.

The CPU15, said positive peak value P _+, the negative peak value P _- performs detection of chord trigger based on, if there is string triggering the positive zero-crossing occurrence time t _a, a negative zero crossing occurrence time The pitch is extracted based on T _b .

FIG. 4 is a flow chart for explaining the tone generation control processing performed by the CPU 15 for each string. First,
The CPU 15 reads out the latest stored peak value, determines whether the peak value is larger than a predetermined note-on threshold value, that is, whether there is a string trigger, and if there is a string trigger, pitch extraction is performed. The process S2 is performed.

[0040] The pitch extraction step S2, the positive zero cross interrupt signal INT _a generation time interval TP _a negative zero-cross interrupt signal INT _b generation time interval TP
It is performed by determining whether or not _b is almost equal. That is, the positive zero-cross interrupt signal I is stored from the stored positive and negative zero-cross times t _a and t _a.
The generation time interval of NT _a is calculated, and the generation time interval of the negative zero-cross interrupt signal INT _b is calculated from the previous and current negative zero-cross generation time t _b, and when both generation time intervals become substantially equal to each other. , The occurrence time interval is extracted as a pitch cycle.

When the pitch period is extracted, the string trigger reads out the maximum peak value from the peak values input from the detection to the pitch period extraction, and delays the delay time information t corresponding to the maximum peak value. The delay characteristic information currently selected and stored in the characteristic information storage unit 15a is read. Then, the weighting factor g corresponding to the string number i
(I) a by multiplying the delay time information t thus read out, to calculate the delay time t _d (S3~S4). This weighting factor g (i) is, for example, 0 <g (i) ≦ 1 and g
(1) <g (2) <g (3) <g (4) <g (5) <g
It is set to a predetermined value that satisfies (6). For example, g (6)
= 1, g (5) = 0.9, g (4) = 0.7, g (3) = 0.
5, g (2) = 0.3 and g (1) = 0.1. Therefore,
In this case, the larger the string number i, the longer the delay time t _d .

On the contrary, g (1)> g (2)> g (3)
> G (4)> g (5)> g (6) may be set. After calculating the delay time t _d as described above, pitch information corresponding to the pitch period is created, and A
A note-on instruction with the pitch information is issued to the channel PCM tone generator 17 (S5).

As a result, a musical tone having a pitch corresponding to the pitch period of the string vibration is generated from the A channel PCM tone generator section 17. Next, the CPU 15 sets the delay time t _d in the timer, operates the timer, and waits for a timer time end interrupt from the timer (S7).

Then, when the timer time end interrupt is added from the timer after the delay time t _d has elapsed, the same pitch information as the pitch information added to the A channel PCM sound source section 17 is applied to the B channel PCM sound source section 18. The note-on instruction in step S8 is performed (S8).

By the above operation, as shown in FIG.
_{When a} tone is generated from the B channel PCM tone generator 18 in B, the tone generated from the A channel PCM tone generator 17 and the tone generated from the B channel PCM tone generator 19 are added by the adder 19 and combined. The generated musical sound is generated from the speaker 23.

Therefore, the A channel PCM tone generator 1
Tone generated from 7 and B channel PCM sound source section 18
The tone generated from the above causes interference development according to the delay time t _d, and the tone color is changed by changing the overtone structure. If the delay time t _d is short, a high-frequency delay effect is obtained, and if it is long, a low-frequency delay effect is obtained. {Second Embodiment} FIG. 5 is a system configuration of a second embodiment in which the present invention is applied to a so-called trigger type electronic string instrument that detects a fret operation position and sets a pitch from the operated fret position. It is a figure.

In the figure, the same components as those shown in FIG. 1 are designated by the same reference numerals and detailed description thereof will be omitted.
Although not specifically shown, a fret switch is embedded between the frets in the fingerboard of the musical instrument body, and the fret switch is turned on when pressed. Further, although not shown, a pickup for picking up string vibration is provided on the body, for example, corresponding to each string.

The vibration of the string is converted into a corresponding electric signal a ₂ by the pickup and amplified by the amplifier 101 to be a waveform signal b ₂ which is output to the string vibration level detecting section 102.

The string vibration level detecting section 102 detects the waveform signal b.
_{If 2} becomes larger than the threshold value of the predetermined string trigger, the string trigger outputs the signal T _r2 to the CPU 15 '. Also,
The waveform signal b ₂ is converted into corresponding digital data W _D at a predetermined sampling period and output to the CPU 15 ′.

The fret switch group 110 is composed of the plurality of fret switches, and when a string is pressed to a predetermined position on the fingerboard, the fret switch embedded below the pressed position is turned on. ing. The output of each fret switch is applied to the switch status detection unit 120.

The switch status detection unit 120 is a circuit for storing the on / off state (status) of each fret switch of the fret switch group 110, and the CPU 1
5 ′ reads the status of each fret switch of the fret switch group 110 from the switch status detection unit 120.

The CPU 15 'includes a string vibration level detecting section 11
When the trigger signal T _r2 applied from 0, we obtain the fret operation position of the string corresponding to the trigger signal T _r2 thereof applied were via the switch status detecting unit 120. The fret operation position is detected by reading the statuses of all the fret switches corresponding to the string having the string trigger. Then, the fret number corresponding to the turned-on fret switch is obtained, and the pitch information corresponding to the fret number is created.

Further, the CPU 15 'causes the string vibration level detecting section 1 to operate after a predetermined time has elapsed since the trigger signal T _r2 was applied.
02, the instantaneous value (digital data) of the waveform signal b ₂ at that time is read, and the delay time information t corresponding to the instantaneous value is read from the delay information storage section. And
Similar to the first embodiment, the delay time information t
The weighting factor g corresponding to the string number i for which there was a string trigger
The delay time t _d is calculated by multiplying (i).

Thereafter, similarly to the first embodiment, the musical tone is generated from the A channel PCM tone generator section 17 and the B channel PCM tone generator section 18 with a predetermined time difference t _d . {Third Embodiment} FIG. 6 is a system configuration diagram of a third embodiment in which the present invention is applied to an ultrasonic electronic stringed instrument that propagates ultrasonic waves to each string to detect the fret operation position.

In the figure, the same components as those shown in FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted. The ultrasonic wave transmission / reception unit 201 has a predetermined frequency (for example, 400 KHz).
(1 to 1 MHz) ultrasonic waves are transmitted at a predetermined cycle from the vicinity of one end of the string and echoes of the ultrasonic waves are received. The ultrasonic waves transmitted by the ultrasonic wave transmitting unit 201 propagate through the string. Go. And when fret operation is performed, it reflects on the fret that is in contact with the string,
The echo of the transmitted ultrasonic wave is the ultrasonic wave transmitting / receiving unit 201.
To be received.

The ultrasonic wave transmission / reception unit 201 outputs a time measurement start signal s to the time measurement unit 202 when transmitting an ultrasonic wave, and outputs a time measurement end signal e to the time measurement unit 202 when an echo is received.

The clocking unit 201 starts clocking when the clocking start signal s is applied, and ends clocking when the clocking signal e is applied. Then, the measured value is stored in a latch (not shown). When the time counting end signal is not applied within a predetermined time after the time counting start signal s is applied, the time counting is stopped and the latch is reset to "0".

The CPU 15 'reads out a timed value from the latch in the timepiece unit 202 at a predetermined cycle, and the value is "0".
If not, pitch information corresponding to the measured value is created. That is, the time count value is the time during which the ultrasonic waves travel back and forth from one end of the string to the frets with which the string is in contact, and the fret operation position is detected by the time count value.

Although not shown in the drawing, a pickup for converting the string vibration into an electric signal is provided for each string, and the output a ₃ of the pickup is the amplifier 20.
It is amplified by ₃ and becomes a waveform signal b ₃ which is applied to the string vibration level detecting section 204.

The string vibration level detecting unit 204 is the same as the string vibration level detecting unit 102 shown in FIG. 5, and when the output a _{3 of} the pickup becomes larger than the note-on threshold, the trigger signal T _T3. To the CPU 15 ″. Further, the waveform signal b ₃ is sampled at a predetermined cycle,
The instantaneous value is output to the CPU 15 ″.

As described above, the CPU 15 "creates pitch information, and the trigger signal T _r3 is added from the string vibration level detecting section 204, so that the same processing as in the second embodiment is performed thereafter and the A channel PCM is executed. The tone generator 17 and the B channel PCM tone generator 18 generate musical tones with a predetermined time difference.

In the above embodiment, the delay time is variably controlled according to the vibration intensity of the string and the type (string number) of the string. Accordingly, for example, the delay time may be variably controlled so that the delay time becomes long when the pitch cycle is short.

Similarly, in the case of a trigger type electronic stringed instrument, the delay time may be variably controlled according to the fret number, and in the case of an ultrasonic type electronic stringed instrument, the delay time may be variably controlled.

Further, the delay characteristic corresponding to each string may be stored independently, and the delay characteristic is also shown in FIG.
The delay time may be set to be shorter as the vibration level of the string increases, without being limited to the one shown in FIG.

[0065]

According to the present invention , the delay time setting means
At least one of string operation and fret operation
Set the delay time based on the related parameters
However, the musical tone generation instruction means corresponds to the detected string operation.
The pitch corresponding to the set pitch information
Instructed to generate musical tones and supported string operation
From the timing to set by the delay time setting means.
The sound is output at a time interval that corresponds to the specified delay time.
Instruct to generate a pitched tone corresponding to high information
As a result, each musical tone is
By changing the delay time of, you can obtain a fine-grained delay effect, which enables rich performance expression.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a first embodiment.

FIG. 2 is a diagram showing delay characteristic information stored in a delay characteristic information storage unit.

FIG. 3 is a schematic diagram illustrating the operation of the embodiment.

FIG. 4 is a flowchart illustrating delay effect control performed by a CPU.

FIG. 5 is a system configuration diagram of a second embodiment.

FIG. 6 is a system configuration diagram of a third embodiment.

[Explanation of symbols]

 13 pitch extraction unit 14 level detection unit 15, 15 ', 15 "CPU 15a delay characteristic information storage unit 16 delay characteristic setting unit 17 PCM sound source unit for A channel 18 PCM sound source unit for B channel 102, 204 string vibration level detection unit 110 Fret switch group 120 Switch status detection unit 201 Ultrasonic wave transmission / reception unit 202 Timing unit

Claims (8)

[Claims] 1. A string operation detecting means for detecting a string operation for instructing a timing of generating a musical sound, and a pitch information setting means for setting pitch information corresponding to a fret operation position. At least one of the string operation and the fret operation
Delay time setting means for setting a delay time based on a predetermined parameter related to the string operation, and a string operation for detecting the string operation detected by the string operation detecting means .
To generate a musical tone having a pitch corresponding to the pitch information set by the pitch information setting means at a corresponding timing.
Is it the timing corresponding to the string operation as well as instructing?
The delay time set by the delay time setting means.
The pitch information is added at a time interval corresponding to the ray time.
Tone generation to instruct to generate tones with the corresponding pitch
An electronic stringed instrument having an indicating means . 2. The string operation detecting means is the string operation.
The strength of the string operation is detected by the delay time setting means.
The delay time is set based on the strength of the string operation to be detected.
The electronic stringed instrument according to claim 1, which is set . 3. The string operation detecting means is the string operation.
Of a plurality of string operation members provided for receiving
Detect which string operation member the string operation was performed on.
The delay time setting means is the string operation detecting means.
Based on the string operation member that detects the string operation, the delay
The electronic stringed instrument according to claim 1, wherein a time is set . 4. The delay time setting means is the parameter.
Shows the delay time corresponding to any possible value of the meter
Set the delay time based on the delay time information
Electronic stringed instrument according to claim 1, characterized in that. 5. A plurality of types of delay time setting means
Of the delay time information selected from among
Electronic stringed instrument according to claim 1, wherein the this <br/> for setting the delay time based on ray time information. 6. The pitch information setting means is the position at which the pitch is pressed.
It has a fret switch to detect
And electronic stringed instrument according to claim 1, wherein the setting the pitch information based on location. 7. The pitch information setting means is a stretched string
The pitch of the string vibration is detected when the
Electronic stringed instrument according to claim 1, wherein that you set the pitch information on the basis of the pitch. 8. The pitch information setting means is a stretched string
Propagate ultrasonic waves from one end of the
The reflected wave of the ultrasonic wave generated by
It is characterized in that the pitch information is set based on the reflected wave.
The electronic stringed instrument according to claim 1.