JPH0485595A - Controller for electronic musical instrument - Google Patents

Abstract

PURPOSE:To offer a controller which easily control musical sound parameters of a sound source by bringing an electric resistance member into contact with a bow member having electrical conductivity and detecting the contacting position as an electric signal. CONSTITUTION:A natural rubbed string instrument is provided with the bow member 5 equivalent to a bow, the electric resistance member 27 which is arranged almost in parallel to the hair of the bow member 5 or as the substitute for the hair, and a position detecting means 27 which detects the contact position in the electric resistance member when performance operation is performed by connecting the electric resistance member 27 of the bow member to a conductive string equivalent member 6, and the output signal of the position detecting means is processed as the musical sound parameter of the electronic musical instrument by a processing part 2. The bow member 5 which has the hair equivalent to that of the bow of the natural musical rubbed string instrument is used to enable a player who is skilled in the performance of the natural rubbed string instrument to easily operate this controller. The electric resistance member 27 which is arranged almost in parallel to the hair of the bow member 5 or as a substituted for the hair is used to easily generate the bow position as the electric signal.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application 1 The present invention relates to electronic musical instruments, and more particularly to the use of an electric musical instrument for controlling the performance of electronic musical instruments.

``Prior Art'' Sound source circuit for electronic musical instruments) 1. In addition to FM sound sources, waveforms, mediocre-type η sources, etc., physical models have been proposed.

In a physical model sound source, for example, when simulating a stringer, a closed loop circuit stains the strings of the stringer x1.
．． -1"L, 2. The characteristics of the circuit are bow speed, bow pressure, pitch,
It is controlled by musical sound parameters such as timbre. Electrical simulation of the musical instrument '8' generation operation 1-
- Physical model sound sources require musical tone parameters equivalent to those used to control musical tones in natural musical instruments.

Such performance input devices for physical sound sources include, for example, those for bowed string instruments, those that give bow speed and attribution, those for wind instruments, those that give point pressure, etc. available.

Since musical tone formation in electronic musical instruments is done electrically, any device that can generate electric signals under the human hand of the performer is sufficient. σ) Bitge may be generated by using the keys on the keyboard.
Some people would like to be able to play an electronic musical instrument in the same way as a stringed instrument.

In addition, electric instruments can generate various kinds of music.
Kirunote'4 Type 0 By using performance input corresponding to natural instruments -), you can create 91 musical tones corresponding to other types of musical instruments 4
-8 children want 1. stomach.

14 Problems to be Solved by the Invention] In a bowed string instrument, which is a natural musical instrument, the pitch of the musical tone is determined by the position of the finger on the fingerboard. 11. 1 is determined by bow speed, bow position, etc.

In conventional electronic musical instruments, manual performance means and a # board are mainly used. And J-roka! When using an Iwak, it is extremely unlikely that the electric tone parameters of these bowed stringed instruments will occur at (-16).

SUMMARY OF THE INVENTION An object of the present invention is to provide a roller for an electronic musical instrument that is suitable for generating musical tones such as a bowed string instrument and can easily control the musical tone parameters of a physical model sound source.

Means for Solving Problem 1] A computer for an electronic musical instrument according to the present invention includes a bow member equivalent to the bow of a naturally bowed stringed instrument, a C-column substantially parallel to the hair of the bow member,
Alternatively, when performing a performance operation by bringing the electric resistance member placed in place of the hair into contact with the electric resistance member of the temporary equivalent member 4C bow member having conductivity, the contact position in the electric resistance part H is detected (iffi detection f stages 5, and is suitable for using the output signal of the position detecting means as a tone parameter of an electronic musical instrument.

1゛Effect A bow member having hairs equivalent to those of the bow of a naturally bowed stringed instrument is used.

=): From 1=, those who are 16 years old in playing naturally bowed stringed instruments can easily operate this controller.

By using an electrically resistive member disposed substantially parallel to the bristles of the bow member or in place of the bristles, the bow position can be determined by an electric signal, and the 4:1j'-function can be easily achieved.

The electrical signal representing the bow position is 1. It often contains noise, or the noise can be electrically reduced by using a filter.

By time-differentiating the electric fA representing the bow position,
The bow signal is transmitted electrically.

'L Embodiment] FIG. 1 shows the overall configuration of an electronic musical instrument according to an embodiment of the present invention.

This electronic musical instrument includes a performance information input section 1, a tone parameter processing section 2, and a physical sound source section 3.

The performance information input unit 1 includes a fingerboard equivalent part 4, a main body having a temporary equivalent member 6 of the string part, and a bow 5 equipped with a detection member, corresponding to a naturally bowed stringed instrument.

In addition, in this embodiment, the fingerboard equivalent part 4 and the temporary equivalent member 6
Since it is formed from a single part, it has a slanted betarua structure that changes the pitch range to correspond to the switching of strings in naturally bowed stringed instruments.

The musical tone parameter processing section 2 is a section that performs conversion, supplementation, recording, reproduction, fine-tuning, etc. of musical tone variation, and is formed by, for example, a micro combinator, a personal computer, or the like. Performance information input section] Processes the generated electrical signals [2. Generates musical tone parameters.

The physical model 'g-# section 3 includes a closed loop circuit including a non-linear circuit #18 that simulates the operation of the string rubbing section and a delay circuit 9a, 9b that simulates the vibration of the string of controlled length. 7, a musical tone signal of a bowed string instrument is generated based on the musical tone parameters and the bow speed, attribution, pitch, etc. in 1 to 1.

Note that by converting the five tone parameters, it is also possible to generate musical tones of a wind instrument or the like using the same configuration.

In the case of wind instruments, ampsure is used instead of bow speed, and doeyo is used instead of kyoku.

Each part of the electronic musical instrument shown in FIG. 1 will be explained in more detail below.4 FIGS. 2(A) and 2(B) show the part corresponding to the fingerboard of the performance information input section. indicates its configuration.

The fingerboard equivalent portion 4 is provided on the surface of the neck portion of the musical instrument body having an external shape equivalent to that of a natural stringed instrument, for example, and
As shown on the right side of the figure, the ribbon controller 11 extends in the length direction of the fingerboard, and the contact conductor 12 is arranged parallel to the ribbon controller and can be contacted at any position. The ribbon controller 11 is formed of a resistance band having a length of about 50 cl and a resistance value of about 5.OMEGA., for example.

Further, the #4 tactile conductor 12 is formed of a good conductor such as a conductive wire arranged in parallel to the ribbon controller 11. The contact conductor [2] is grounded via a protective resistor 13 of approximately [KΩ], for example. Further, the terminal on the ribbon controller] 1 on the spring side is connected to, for example, a 5V power source, and the terminal on the thread winding side is open.

With such a configuration, the contact conductor 12, for example,
If the ribbon controller [1] is touched at two places, just like a natural musical instrument, the one closest to the inner piece of the two contact points will be effective. The power supply voltage is divided by the resistance on the piece side from the contact point of the ribbon controller 11 and the holding resistor 13, and the divided t-juice is output @? 14.

Figure 2 (B) shows the relationship between the voltage of the electric signal obtained from the corresponding part of the fingerboard as shown in Figure 2 (A) and the finger pressing position. distance x
shall be. The vertical axis represents the output voltage Eout, and it is assumed that a +5V power supply voltage is connected to the piece-side terminal of the ribbon controller 11.

In this manner, by pressing the fingerboard equivalent portion 4 with a finger, an electric signal is generated according to the position of the finger.

Due to the arrangement of the ribbon controller 11, the presence of the protective resistor 13, etc., the obtained voltage signal is not linearly proportional to the finger pressing position, and as shown in the figure, the increase increases as the value of X increases. By processing this electrical signal, it is possible to control the pitch of the seven-shot, four-tone musical tone.

3(A) and 3(B) show the voltage detection section of the bow 5 of the performance information input section 1. FIG. FIG. 3(A) shows the structure of the bow hair attachment section. The end portion 17 of the four bristles 16 of the bow 5 is connected to the hand-side mounting portion 20 of the bow 5 via a metal plate 18, which is covered with four bristles 16 like the bow of a natural musical instrument. A pair of strain gauges 1.9a are mounted on the front side and the M side surface of the metal plate 18.
, ], 9 b ffi is pasted.

Press the hair 16 of the bow 5 against the part corresponding to the string! Then, the bristles 16 are displaced toward the wood of the bow according to the pressing force. At this time, force acts on the metal plate 18 connected to the bristles 16. This force deforms the metal plate 18, and the strain gauges 19a, 1
．． 9 b! , generates an electrical signal.

An example of a strain detection circuit using a strain gauge is shown in FIG. One of the reference resistors 21a to 21b forms the other voltage dividing circuit. Voltage supply #! ``7' When a constant voltage E is applied to 22a and 22b, the two voltage dividing terminals 23a and 23
The operational amplifier OPI detects the @sweat difference signal generated at b. When no force is acting on the strain gauges 19a, 1.9b, the two voltage dividing terminals 23a, 23b produce exactly the same voltage, and the output voltage 1 (- is "0").

The bow 5 is pressed against the string equivalent part, and the strain gauges 19a, 1
．． 9b is deformed, a signal corresponding to the bending is detected. Note that the bridge circuit shown in FIG. 3(B) generates an output voltage when the strain gauges 19a, ], 9b show the same change in L7. Gauge elongation is ignored and only bending is detected.

As the metal plate 18, a metal plate having a thickness of, for example, about 1.5 inches is used, and the output voltage of the voltage detection circuit 25 is made to generate a voltage in the range of, for example, -5V to +5V. In this way a voltage signal is obtained.

4(A1), (A21(B1.), and (B2) are for reducing the bow position detection section of the bow 5 of the performance information input section 1.
A1) is to make the side of the f-rod part of the bow smaller.

Referring to Fig. 3 (A), please explain 1-)) t: 2. The hand side of the bow is attached to the part 20 through the metal plate 18 to which the strain gauge E; Hair 16 is attached. A resistance wire 2'7 is attached to the end 1'7 of the wire 6 via a metal plate 28, a rubber member 29, and a fitting 25a.

41st n] (51.1 in A2>, the other end of the resistance wire: 27 is taken Mlzp, 25 k) through [1,'ζ bow 5
It is attached to the tip of the cap. That is, the resistance wire 27 is connected to the metal plate 28, and the fitting 2 is also connected between the two, and the metal plate 28 is held by the rubber member 29 via L7.
[ ] (B 1 ) and (B 2 ) are the bottom imu of this bow 5 viewed from the bottom 1fn side. The resistance wire 27 is parallel to 5t on the L side of the top 1 (-) in the figure, and is stretched C 21'1. The -1 wood part is #W, and the 1000th part is near the piece, and it is used in a lying state.For this reason, as shown in the figure, one resistance wire 27 is connected to the t part 16 of the bow. Small jM
By arranging the bow hair 1 (the resistance wire 27 touches the string before 'i', the resistance wire t1 shown in I is placed on the floor, square ff: C?, In the case of a bow such as -5ζ, when holding the main instrument body, 2 is a square & 1 fl! I': Preferably stretched 1. stomach,
The distance between the resistance wire and the hair of the bow is approximately several millimeters. #3
．． The reason why the rubber member 2.9 is used on one side of the bracket 1 wire 27 is that the resistance wire 27 may stretch and become loose during performance. - This is a good way to prevent J.

Figure 5 shows the detection mechanism for detecting the bow position when performing a performance operation using L. ”-Instrument body, ri)
The temporary equivalent member 6 is formed of a conductor such as a metal rod. The electrical resistance of the ice can be ignored. A resistance wire 27 is stretched parallel to the wire 16 on the bow +5, and a constant electric current J'''' is applied between both ends of the wire. 6, the resistance wire 27 contacts the string equivalent part $46, and the temporary equivalent member 0 takes out the voltage divided at that position as a signal.This voltage signal is taken out via obe ring OP2. The electric wire 4 signal changes according to the position of the resistance wire 27, and then lights up depending on the output voltage 6J, indicating the tip bow, etc., and can be used to know the position of the four bows. is the resistance) ?1- Negative voltage source -v divided by R2 c,: Because of the connected 0, ?', the bow 5 contacts the temporary equivalent member 6, and when it does not, the negative voltage The 81 force is 7 and it is generated as 1 drag line 27 Ha,'l::
Toiha [about 0, 12 lil, length, about 5 f) C1
As the three output voltages that can be formed by forming a resistance line ζ' with a resistance value of about 50 Ω, a tL of, for example, 0, c) and V is generated.

For example, in the natural musical instrument ``Hiolin'', four strings are strung 7', or if the child instrument is J5', the temporary equivalent member 6 is a shore member. When this person switches the 1st string and changes the pitch of the 1" sound that occurs, he presses the Betarua and selects the string depending on the amount of depression. For example, depending on the amount of depression 6.2, the string is 0 to 127 or 128. Stage i ~ is generated, and this area is divided corresponding to the strings of 41) 5, and the pitch is adjusted according to the string.・Giving a click feeling to the 1st string force switching λ device Even if we set up a model
:stomach. It's good to use four switches.

Come on :)! ;l: t, te, pitch, bow position, bow moon-
These musical sound parameters generated by 21V and the changes in the sound parameters due to performance operations, μ, are different from the way similar parameters change on natural musical instruments. ) in many cases. For example, the relationship between the pressing finger position on the corresponding part of the fingerboard and the electric field is non-linear, as shown in Section 2-1(B).
In order to generate a JT accurate pitch signal using non-linear characteristics, it is necessary to detect the pitch correctly! 9. Convert the output voltage UEI:out to a storm that changes 1:2 in the t-line with respect to the pressing finger position X. Calculate the string length from the bridge to the pressing finger position l2.

Then, the key K1-C corresponding to the string length of J5 is played to form a pitch signal. 2-'7 These processes are performed by calculations using mathematical formulas.
- What? ra〉 may be used. Also, when processing pitches, other controls are used to express vibrato and voltament.
'Zl is also good. In addition, 7@: exchange using other methods may be used.

It is also necessary to correct the signal tL obtained from the third belonging detection section.

6 shows the characteristics of the pressure detection section 9. As shown in the upper part of FIG.
゜For this reason, depending on which part of the resistance wire 27 comes into contact with the temporary corresponding part, strain occurs in the gauge 19! The shape and quantity change. The graph in Figure 6 shows that when a constant force of 500 g is applied to the resistance wire 27, the value of the voltage signal changes depending on the position of the bow to which the force is applied.The horizontal axis in Figure 6 shows the voltage position. , the vertical axis shows the voltage output. As shown in the figure, the output signal is large when the potential is low (charging), and the output signal time decreases as the voltage increases. A voltage signal having such characteristics is corrected using a linear regression line so that an approximately constant voltage output signal is generated for a constant arc regardless of the voltage position. In one case, the correlation coefficient was 0992 after correction using a linear regression line.

Since the electric position is detected by mechanical contact between the resistance wire and the conductor, contact noise may occur. In order to reduce this type of noise, which is particularly likely to occur at the moment when the bow and the temporary equivalent member come into contact with or separate from each other, a filter or the like can be used.

No. 7J shows a filter circuit for correcting the electric position color code.

The raw data a1 of the electric potential position (or three points mean '2') is supplied to the filter F1. The three-point median gamma filter F1 is a filter that employs the median value of measurement values at three consecutive points. For example, among three consecutive inputs, if the first one is the largest, the next one is the smallest, the last one is the smallest, or something in between, then the output signal will be 5, and the value of the last signal will be output. In this way, the 3-point median filter Fl for j,
Take the middle value among the two measured values and output 11)
Output t and [,. This three-point median filter F
The i &) output is fed to a three-point averaging circuit Do2. The three-point averaging circuits 1 and 2 take three consecutive inputs and output the average value. In this way, the complementary jJ value At is formed, and the correction data of the electric position is taken and used as h-Ji.

Using a 3-point median filter F1, - excludes 4 exceptional values. Additionally - by using a mean value filter, the effects of sudden changes are softened.

In physical model sound sources, differential values are often used as parameters6. For example, when considering the interaction between a bow and a temporary equivalent member, potential 2 is also a musical tone parameter, and 4 bow distance is an even more important musical tone parameter. Therefore, velocity can be obtained by converting the electrical position into bow velocity or by time-differentiating the two desirable positions.

If you normally take the difference and perform a differential calculation on such 8th harmonies, the accuracy of the speed tends to be extremely poor, and it is often impossible to obtain a satisfactory musical tone balance.

FIG. 8 shows a circuit that converts the electric position to the bow chain.
First, the complementary FE data A1 of the electric position is supplied to the difference circuit DF. The difference circuit DF takes the difference between successive input signals and generates a difference sequence (1). The difference sequence obtained in this way is supplied to a three-point averaging circuit 3, and the average value vt of three consecutive points is taken. This average value is further supplied to the first-order l11 (low-pass filter F4), which mixes the previous output value and the current value at a constant ratio, and uses this bow speed -γ-ta as an output signal. For example, assume that the coefficient of the low-pass filter is 0.3.

By using such a circuit, it is possible to provide a usable Y-yoke based on electric position data including 1,51 is.

As mentioned above, conversion 5 complement 1. The resulting performance information is directly applied to the physical model sound source of the bowed stringed instrument with parameters and 1. 2) can be done. Even if a physical model sound source other than a bowed string instrument is used, the sound source is used once a week. ．． ．． By converting it into a parameter, it is possible to drive the physical thousand-cell blind source.

In addition, it is also possible to record and reproduce performance information as needed. Furthermore, it is also possible to reduce the amount of information by recording the parameters compared to the case of recording the matching information. Also, by editing the recorded performance information, mistakes that are inevitable in live performances can be corrected. , come with me.

Also, anyone can refrain from performing performances that are impossible in reality.

FIG. 9 shows a circuit containing the main parts of a physical model sound source.

This @ source circuit contains the musical tone parameters formed as described above, such as a bow speed signal, a pitch signal, and an electric position G - bow J +
Signals etc. are supplied. The bow speed signal is input to an adder circuit 52. In the case of a wind instrument, the point pressure or the ampsure representing the curvature of the rim corresponds to the speed signal. This speed signal is a 5 start signal and is supplied to a nonlinear circuit 55 via an adder circuit 53 and a divider circuit 54. The nonlinear circuit 55 is a circuit with nonlinear characteristics representing the nonlinear characteristics of a violin string.

The nonlinear characteristics of the nonlinear circuit 55 include two parts: a nearly linear region from the origin to a certain range and a region outside of that where the characteristics change. While the bow speed is slow, the displacement of the string is approximately equal to the displacement of the bow, and the motion of the string can be expressed by the coefficient of static friction. In this case, roughly linear characteristics appear. When the relative velocity of the bow to the string exceeds a certain value, the velocity of the bow and the displacement velocity of the string are no longer the same. That is, the moving vehicle # coefficient comes to dominate the motion instead of the static friction coefficient. This switching from static friction coefficient to dynamic friction coefficient produces nonlinear characteristics.

In FIG. 9, the output of a nonlinear circuit 55 having a nonlinear characteristic such as m: is supplied to two adder circuits 44 and 45 via a multiplier circuit 56.

The input side division circuit 54 and the output multiplication circuit 56 of the nonlinear circuit 55 receive the bow pressure signal and change the characteristics of the nonlinear circuit 55. Note that the bow pressure signal corresponds to amplifier sure or point pressure in the case of a wind instrument. The division circuit 54 on the input side divides the two human input signals to change them to a smaller value. If there is a division circuit 54, even if it receives a large input, it will give an output as if it had received a small input. The multiplication circuit 56 on the output side creates a characteristic 63a formed by the division circuit 54 and the nonlinear circuit 55, which plays the role of increasing the output of the nonlinear circuit 55, on the output side. In addition, when receiving the same bow pressure signal, first dividing the human power and later multiplying the output, the division circuit 54 divides by a coefficient Co, and the multiplication circuit 56 multiplies the same coefficient CO by *X. In this case, the overall characteristic has a shape obtained by multiplying the characteristic when only the nonlinear circuit 55 is used by 00 on the horizontal and vertical axes. It should be noted that by changing the coefficients of the multiplier circuit to be different from the coefficients of the divider circuit, different shapes may be created.The non-linear characteristics are modified in response to the wailing 1 signal. It may be further changed depending on the direction of the bow movement.

Addition circuits 44, 45 are provided in the semicircular signal paths 31a, 31b. A circulation signal path 31, which is a combination of two semi-circulation signal paths, constitutes a closed loop that circulates musical tone signals corresponding to the strings of a bowed stringed instrument.

In other words, in a string, vibrations are reflected at both ends and reciprocate. Furthermore, in a wind instrument, vibrations reciprocate within the resonator. This is approximated by a closed loop in which the signal circulates. In this circulating signal path, two delay circuits 32, 33, two LP
F (low-pass filter) 34. 35. Two attenuation circuits 38. 39. Two multiplication circuits 42. 43, the delay circuit 32. , and give a predetermined delay time.

The basic pitch of a musical tone is determined by the total delay time during which the signal circulates through the circulation signal paths 31a and 31b and returns to its original position. That is, the basic pitch is mainly determined by the sum of the delay times of the two delay circuits 32 and 33, pitch x (-α + (1-α)] - pitch. One delay circuit determines the basic pitch at the point where the bow and string contact each other. The other delay circuit corresponds to the distance from the point of contact between the bow and the string to the finger pressing point 1.

Although the pitch is almost determined by the delay circuit 32.33, other elements included in this circulating signal path, such as L P F 34.35 and attenuation control 38.39
Delays may also occur due to such factors. Strictly speaking, it is the sum of all delay times included in these loops that determines the pitch of the generated musical tone.

The LPF 34.35 simulates various string vibration characteristics by changing the transfer characteristics of the circulating waveform signal. Depending on the selection of tone switches on the instrument body, etc.
A timbre signal is generated and supplied to the LPF 34, 35, and its characteristics are switched to simulate the desired musical tone of a bowed string instrument.

As vibrations propagate through the string, they are gradually attenuated. The damping control 1-roll 38.39 simulates the damping I which damps the vibration transmitted through this string.

The multipliers 42 and 43 are for multiplying the reflection coefficient -1 in response to the violation of vibration at the fixed end of the string circle. Change to opposite phase. The coefficient -1 indicates the opposite phase reflection. The amplitude attenuation in the reflection is incorporated into the attenuation amount of the attenuation control 38.39.

In this way, the circulating signal paths 31a and 3 corresponding to the strings are
11)'-6 is vibrated or circulated to simulate the movement of the strings of a bowed string instrument.

In addition, the motion of the strings of a bowed string instrument has a steresis characteristic. To simulate this, the output of the multiplier circuit 56 is
■The nonlinear circuit 55 is connected to the PF 58 and the multiplication circuit 59.
is fed back to the input end. L P F 5
S is for preventing feedback loose oscillation.

Now, the input from the adder #152 to the adder 53 is IJ, the input from the feedback path to the adder 53 is ■, and the combined amplification factor of the divider circuit 54, 11, linear circuit 55, and multiplier 56 is A. Then, the output W of the multiplier IN156 is expressed as (u+-v) A ==-w. LP
The gain of the negative feedback circuit including F58 and the multiplier circuit 59 or B(
(negative value), the feedback jLv is expressed as v −w B. If we rearrange these two equations, we get (u−)−
wB) A″?-w5.', w = u A,,-(
1-A B >.

Without feedback, i.e. when B=O, vv
= u A, and the input U or simply gA is multiplied by the number A.

and output it. When Cain B's negative feedback is applied, to obtain the same output, it is necessary to apply an input L2 (1-A B ) times that in the case of 5B-0 (B is negative).

-If the input exceeds the threshold L2 and then decreases by 7J again, the output W is small so the lid v=
Bw is also small, that is, even though the magnitude of the signal input to the nonlinear circuit 55 is the same, the amount of negative feedback is smaller in the dynamic friction coefficient region than in the quiet RI friction coefficient region, so the addition circuit 52 to the adder circuit 53 has a small value.

Nonlinear circuit Fj! Considering the magnitude of the input U from the adder circuit 52 when the input of 155 becomes an open chain, when the input increases, the static friction coefficient dominates, and in response to a large output, strong negative feedback is received, so the larger the input This switching occurs, but when the input decreases, the dynamic@friction coefficient dominates [1, 4 corresponds to a small output, and 5 the amount of negative feedback is small, so switching occurs at a smaller input I]. The magnitude of hysteresis is
Multiplier FI! It is controlled by a gain of 159.

In this way, according to the musical tone signal forming circuit shown in FIG. 9, the movement of the strings of a bowed string instrument can be simulated, and the basic waveform of a musical tone can be created.

As shown in FIG. 9, the output is taken from any point on the circulating signal path 31 and the output signal is provided to the sound system through a formant filter 61 that simulates the characteristics of the body of a bowed stringed instrument.

The formant filter 61 can also receive the timbre signal and change its characteristics. In this way, it is possible to generate the desired 'jI sound signal.

Although the present invention has been described in accordance with the above seven embodiments, the present invention is not limited to these examples. As described above, a total of four natural musical instruments 6J can be used, and a plurality of fingerboard equivalent parts and temporary equivalent members can be used. Detection of finger pressing position by means other than resistance 1. −ζ is also good, and various other changes,
It will be obvious to those skilled in the art that improvements, combinations, etc. are possible.

[Effects of the Invention] As explained above, according to the present invention, since it is possible to perform a performance operation using a bow member equivalent to a bow of a natural musical instrument, it is possible to perform a performance similar to that of a natural musical instrument.

Tan, who has mastered the technique of playing bowed string instruments, can immediately start playing with this electronic instrument.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the overall configuration of an electronic musical instrument according to an embodiment of the present invention. FIGS. (A> is a schematic diagram showing the configuration.
1SJ (B) is a graph showing the characteristics, Figure 3 (A>, (B)
) shows the bow voltage detection section of the performance information input section, FIG. 3 (A) is a side view showing the structure of the hair attachment section, and FIG. 3 (B)
is the circuit diagram of the detection circuit, Figure 4 (A i, ), (A,2), (B1)
, (B2) shows the electric position detection section of the bow in the S performance information input section. Showing '1' Side view, No. 4 view (
B1. ) is bottom view 2 (B2) showing the bottom of the hand part.
) is a bottom view showing the bottom surface of the tip, FIG. 5 is a bottom view showing the eye position detection mechanism and IIA is omitted;
The figure is a graph showing the characteristics of the bow tsubo detection unit, Figure 7 is a circuit diagram showing the eye position correction mechanism, Figure 8 is a circuit showing the conversion from eye position to bow speed, and Figure 9 is . In the figure] F9 Circuit diagram showing the main parts of the physical model sound source 'C' Performance information input section Musical tone parameter processing section Physical model official section Fingerboard equivalent section Temporary bow equivalent member Betal hair metal plate Strain gauge Resistance wire Rubber member

Claims (3)

[Claims] (1) A bow member equivalent to the bow of a naturally bowed stringed instrument, an electrical resistance member disposed approximately parallel to the hairs of the bow member or in place of the hairs, and a conductive string-equivalent member attached to the bow member. and a position detection means for detecting a contact position in the electric resistance member when the electric resistance member is brought into contact with the musical instrument, and the output signal of the position detection means is used as a musical tone parameter of the electronic musical instrument. Controller for electronic musical instruments suitable for. (2) The electronic musical instrument controller according to claim 1, wherein the position detection means includes a monitor that generates a raw signal representing the contact position and a filter that corrects the raw signal. (3) The controller for an electronic musical instrument according to claim 1 or 2, further comprising means for time-differentiating the output signal of the position detecting means.