KR20040005800A - Sound Pickup Device for the Musical String Instruments - Google Patents

Abstract

PURPOSE: A stringed instrument sound pick-up device is provided to convert a sound generated from a stringed instrument into an electric signal to transmit the electric signal to the outside. CONSTITUTION: A stringed instrument sound pick-up device includes a string supporting body(110) that has a characteristic of converting a horizontal vibration of a string to a vertical vibration and transmitting the vertical vibration, a piezoelectric element that is placed in a predetermined portion of the string supporting body, generates an electric signal corresponding to the vertical vibration, an electric signal transmitter for transmitting the electric signal generated by the piezoelectric element, and a means for preventing the piezoelectric element from being detached from the string supporting body.

Description

Sound Pickup Device for the Musical String Instruments}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an acoustic pickup device for mounting on a conventional stringed instrument such as gayageum or lyre, and more particularly, in a conventional stringed instrument having only one playable open string for each string. It is an acoustic pickup device that not only provides a support means for the strings for one end but also provides a means for converting the sound generated by the strings for all the strings belonging to one musical instrument to an electric signal and transmitting them to the outside.

Typically, string instruments such as gayageum or lyre lyngus form a vibrating node of an open string by using a string that is a part of the musical instrument body and a corresponding foot or shoulder in forming an open string.

In more detail, referring to FIG. 7, a string structure of a conventional stringed instrument applies tension to the string 230 with a string needle 213 and a cotton line 240 at both ends of the string around the foot leg 220. The string between the needle 213 and the Ahn forms an open string that can be played, and the string between the Ahn and the cotton string has a structure in which a string of noise is eliminated by the string of the string.

Here, the Anjok can be detached and detached independently from the instrument body, and the string is moved in the horizontal direction with the string to adjust the length of the open string, so that the tuning of the string is possible and the vibration sound of the string is transmitted to the resonance belonging to the main body. To perform.

Since the conventional technology cannot convert the sound generated by the string into an electric signal, it is inconvenient to convert the sound into an electric signal indirectly using a microphone when performing outdoors or in a broadcasting station.

In order to solve some of these problems, Korean Utility Model Publication No. 20-0326244 (Gay Gayageum) makes it easy to tune strings and transmit the string vibration sounds more accurately to vibration detection means, as well as to adjust the tone and volume of the strings. The design of gayageum is known.

The above-mentioned conventional design lacks a detailed description of the principle of operation of the apparatus for converting the vibrating sound of a string, and thus it is impossible to describe the conventional technology in detail, but there are some features and problems based on the above-described design. When described as follows.

The above-described conventional design features the vibration principle of the string which is one of the principles of nature.

For example, by supporting one string with birds, the An, and the bridge, the length of the same string is sequentially divided, so that a portion of the string between the birds and the An, and the other part of the string between the An and the Bridge, respectively, is an open string. To form.

That is, the above conventional design has a structural feature in which two playable open strings exist on the string by supporting the string with three vibration nodes forming means such as saddle, ankle, bridge, etc. in one string.

Thus, the above conventional design contradicts the structure of a conventional stringed instrument having only one playable open string in one string.

The conventional design described above has a problem in that when a part of the string between the saddle and the ankle vibrates, it affects the other part of the same string between the ankle and the bridge, causing the other part of the same string to vibrate together. .

On the contrary, there is a problem in that the same effect as described above affecting the other part of the same string between the birds and the ankle even when vibrating a part of the string between the ankle and the bridge.

The above-mentioned conventional design is also characterized in that the means for converting the vibration of the strings into an electric signal is provided in the hanging needle which is a part of the string instrument main body, and the electric signal converting means is integrated with the main body.

Therefore, a problem that the sound of the strings cannot be converted into an electrical signal by using a conventional conventional string instrument body as it is, that is, the instrument previously held by the player or the performing group in converting the musical instrument sound into an electrical signal There is a problem that cannot be used.

In addition, the above conventional design has a problem that the detailed description of the operation in the process of the vibration sound of the string is converted into an electrical signal.

In addition, the above conventional design has a problem that does not have a detailed description of the mutual electrical operation between the vibration sensing means.

In addition, the above-mentioned conventional design has a problem in that the suspension and saddle and the vibration sensing means are not provided with a detachable means independently of the main body.

In addition, the above-mentioned conventional design has a problem in that it includes a suspension and a saddle and a vibration detecting means, which does not have a means or an effect that can be exchanged independently of the main body.

In addition, the above-mentioned conventional design has a problem in that the objects including the needle and the saddle and the vibration sensing means have the means or the effect of operating the objects separately from each other while being electrically integrated in response to the number of string strings. have.

In addition, the above-mentioned conventional design has a problem in that it includes a suspension and saddle and a vibration sensing means does not have a means or an effect that can be moved independently of the main body.

In addition, the above-mentioned conventional design has a problem in that it does not have a means or an effect capable of devising an electric stringed instrument while eliminating the resonance belonging to the main body of the stringed instrument.

The present invention, in the conventional string instrument, provides a support for the string to one end of one of the two ends constituting an open string for each string corresponding to all the strings belonging to one string instrument, as well as the sound generated by the string In addition to providing a means for converting an electric signal to the outside of the string instrument, as well as providing a means of a component form that can be detached and detached independently from the instrument body, and also provides a means for devising an electric string instrument derived from the present invention. It is done.

1 is a perspective view of the present invention

2: exploded perspective view of FIG. 2

3: A-A line cross section of FIG.

4: B-B sectional drawing of FIG.

5 is a schematic block diagram of a connection use example of the present invention

6: Electric circuit diagram of FIG. 5

7: conventional gayageum

8: Example of use in the conventional gayageum of FIG.

Fig. 9: F-F cross section of Fig. 8

10: Electric circuit diagram using a variable resistor

11 is an electric circuit diagram using an active element

<Code Description of Main Parts of Drawing>

100: the acoustic pickup device of the present invention

110: local body

120: 2-wire lead 1

121, 122: single wire of the double wire 1

130: 2-wire conductor 2

131, 132: single wire of double wire 2

140: adhesive support

141: 1 of the adhesive support

142: 2 of the adhesive support

150: piezoelectric element

151: thin film piezoelectric material

152 and 153: electrode films of piezoelectric elements

154, 155: electrode lead-out terminal

160: piezoelectric element internal space

170: adhesive

180: Acupressure

190: plug

200: conventional gayageum

210: gayageum body

211: upper part of the gayageum body

212: lower part of the gayageum body

213: Gayageum hanging

214: Gayageum resonance

220: Gayageum An

230: Gayageum Prefecture

231: gayageum open string

232: Gayageum noise string

240: Gayageum cord

310: variable resistor

320: resistor

330: FET active element

For the purposes of the present invention,

In addition to providing support for the strings, the local zone body is provided with a predetermined portion in order to install the material properties and piezoelectric elements that convert and transmit the transverse vibrational characteristics of the strings into longitudinal waves.

A piezoelectric element having material properties in response to waves of sectarian nature and generating corresponding electrical signals, and means for obtaining the generated electrical signals;

Electrical conduction means capable of transmitting electrical signals,

The piezoelectric element provides a means to prevent the natural departure from the body of the local zone.

It is characterized by including.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

The same parts as in the related art are denoted by the same reference numerals, and repeated description thereof will be omitted.

Figure 1 is a perspective view of the present invention, Figure 2 is an exploded perspective view showing the configuration of Figure 1, Figure 3 is a cross-sectional plan view of the line AA of Figure 1, Figure 4 is a longitudinal cross-sectional view of the line BB of Figure 1, Figure 5 is a view of Figure 1 FIG. 6 is a schematic diagram of the electrical circuit of FIG. 5, FIG. 8 is a specific example of using FIG. 5 in a conventional gayageum, and FIG. 9 is an FF in a horizontal direction with one representative string in FIG. 8. 10 is a volume control circuit diagram as an example that can be added to the present invention, FIG. 11 is a gain control circuit diagram including an active element as an example that can be added to the present invention, and FIG. 8 is a representative conventional string instrument for gayageum. Top view.

As shown in FIG. 2, the present invention includes a local zone body 110 having a predetermined portion 160 at a portion thereof so that a piezoelectric element may be installed, and a piezoelectric element 150 having a means for acquiring an electrical signal. And, the electric conduction means capable of transmitting an electrical signal as a specific example of the conducting wires (120, 130), and the adhesive aids (142,142) and the adhesive 170 as an example means for preventing the natural deviation from the piezoelectric element to the local body body 110 It consists of.

Material properties of the local zone body 110 and the piezoelectric element 150 will be described by the electrical signal conversion operation below.

The configuration of the present invention will be described in more detail with reference to FIGS. 4 and 2.

The local zone body is illustrated by FIG. 4.

Local zone body 110 has a means for supporting the strings on the upper end in a stable manner to provide a predetermined space to prevent the string is separated from the local zone body during the performance is preferably provided with a saddle 180 .

Although the length and width of the flat section corresponding to the CC line forming the upper part of the local zone body are described only to correspond to a single string, only a plurality of strings are supported on the local zone body and the strings are spaced apart. It is possible to enlarge or reduce the length and width of the cross section corresponding to the purpose.

The surface of the a and a 'portion may be any shape, but is preferably formed concave with a curvature similar to the curved structure of the string instrument body.

The length and width of the flat section corresponding to the D-D line forming the lower part of the local zone body can be enlarged or reduced for the purpose of stably contacting the string body with the local body.

The length and width of the longitudinal section corresponding to the EE line forming the height of the local zone can be enlarged or reduced depending on the type of string instrument in which the present invention is used, and appropriately enlarged or reduced depending on the place where the present invention is placed on the string instrument body. Can be reduced.

The shape of the local zone body can be any shape, but it is preferred to follow the shape of the device used in conventional stringed instruments, such as the ophthalmic, and providing one end of the open string.

The local body may be made of any material that is solid at room temperature. However, it is preferable to use a material that can not only sufficiently endure the pressure of the string but also has excellent performance of transmitting sound waves. Thus, hard wood or metal is preferred.

The piezoelectric element 150 may be positioned in any place and shape within the range of the string instrument body, including the range of the local zone body 110, but in a specific example, the center of the lower portion of the local zone body may efficiently transmit the vibration sound of the string. It is preferable to provide a predetermined space 160 in the site to embed the piezoelectric element.

The piezoelectric element 150 will be described with reference to FIGS. 2, 5, and 6.

2,

The piezoelectric element 150 includes the electrode films 152 and 153 formed on the surface of the thin film piezoelectric material 151 and the piezoelectric material to obtain electricity, and the electrode lead terminals 154 and 155 to assist the electrode film to be connected to the conductive wire. It consists of.

Although a thin film type piezoelectric element has been described as a specific example of the piezoelectric element, the shape, size, and shape may be modified in order to efficiently convert longitudinal wave into an electric signal.

It is preferable that the piezoelectric element is a material having excellent performance of reproducing a continuous wave change in an audible range as an electric signal, rather than a material for detecting an impact or pressure.

Referring to FIG. 2, two wires 120 and 130 are connected to electrode lead terminals 15 and 155 of the piezoelectric element 150. Referring to FIGS. 5 and 6, when a plurality of pickup devices are used, pickup is performed. It is to provide a means for the piezoelectric elements inherent in the apparatus to be electrically connected in parallel with each other.

Therefore, in the case of using a single object pickup device, only one two-wire wire can be connected.

In the following description, the two wire leads are connected to the electrode lead terminals of the piezoelectric element.

Two conductive wires 121 and 122 included in one two-wire lead 120 are connected to the electrode lead terminals 155 and 154 of the piezoelectric element, respectively.

Two conductive wires 131 and 132 included in the other two conductive wires 130 are also connected to the electrode lead terminals 155 and 154 of the piezoelectric element, respectively.

Here, a specific example of a method of connecting the two lead wires to the electrode withdrawing terminals of the piezoelectric element, respectively, has been described in detail. Not only another connection method modified to implement the electrical circuit diagram of FIG. 6 is possible but also other types of electric conduction. Means can be used.

Means for preventing the piezoelectric element from being naturally separated from the local zone body is composed of an adhesive and an auxiliary bar, which will be described in detail with reference to FIG.

The piezoelectric element 150 to which the conductive wires 120 and 130 are connected is inserted into the predetermined space 160 provided in the local zone body, and then, when the auxiliary units 141 and 142 are inserted into both sides of the predetermined space, the auxiliary base and the local zone body are inserted. The shape of the rectangular container which does not cover some surface and the said piezoelectric element is formed.

Means for preventing the natural deviation is to pour the gel-type adhesive 170 to be solidified at room temperature to the rectangular container to solidify at room temperature.

Here, one side of the support 141 has a groove of b, which is smoothly drawn out of the conducting wires 120 and 130, and the support can be smoothly inserted into a predetermined space of the local zone body so as to form the container. To do this.

After the solidification of the adhesive is completed, the acoustic pickup device of the present invention is completed as shown in FIG.

Fig. 3 is a cross-sectional view taken along line A-A of Fig. 1, and Fig. 4 is taken along line B-B.

Although the piezoelectric element has specifically described an adhesive and an adhesion support as a means for preventing natural departure from the local body, the natural departure preventing means is modified within the range of the purpose of preventing the piezoelectric element from natural departure from the local body. You can do it.

8 and 9 illustrate the operation of the present invention configured as described above.

8 is a specific example in which the string acoustic pick-up devices of the present invention are mounted on a gayageum, which is one of the conventional string instruments,

FIG. 9 is a cross-sectional view of an F-F line mainly composed of one string of FIG. 8.

The acoustic pickup device 100 is positioned between the gayageum string 230 and the gayageum body 210, and the respective acoustic pickup apparatuses are installed corresponding to the number of strings of the string.

Acoustic pick-ups are prevented from natural deviation from the body by the force of the string body that they support and presses the local body in the direction of the main body, and the force of the string body supporting the local body that reacts in the direction of the string. At the same time, the pitch of the strings can be tuned by moving them in a horizontal direction with the strings, as well as forming one end of the playable strings 231 of the local zone body (180 in FIG. 1). Will be.

Thus, the acoustic pick-up device can be released from the instrument body by dissipating the tension of the string or moving the pickup device to a place where the tension of the string is not reached.

According to FIG. 9, the string of the gayageum supports the string over the current field (180 of FIG. 4) formed in the upper portion of the local zone body of the acoustic pickup device.

The string 231 between the local zone and the string needle constitutes a playable open string, and the vibration sound of the string of the present invention is converted into an electric signal by vibrating the open string.

It will be described in more detail by the accompanying drawings.

First, an operation process in which sound generated when the string of the present invention vibrates is converted into an electrical signal will be described.

Referring to Figure 4,

When vibrating the string (231 in FIG. 9) over the topical field 180 of the local body 110 belonging to the acoustic pickup device, the local body and the string have the characteristics of the wave due to the difference in properties between the vibration transmission media. In other words, the transverse wave nature of the current vibration that was moving in the horizontal direction and the wave propagation direction is converted into the longitudinal wave property that moves in the vertical direction and the wave propagation direction perpendicular to the wave propagation direction in the local field body. It is delivered to the entire body zone 110 from the chapter 180.

At this time, the wave transmitted to the body of the local zone has a property corresponding to the wave and the frequency, the amplitude of vibration and the waveform generated when the string vibrates.

The wave transmitted to the local zone body provided with the material characteristic of transmitting the wave reaches the piezoelectric material 151 belonging to the piezoelectric element 150 in close contact with the local zone body.

Since the wave reached to the piezoelectric material has a longitudinal characteristic, it acts as a pushing and pulling force on the piezoelectric material 151. The pushing and pulling force corresponding to the frequency, amplitude, and vibration waveform of the wave has a piezoelectric material. Add to

Electricity is generated in the piezoelectric material by the pushing and pulling force, and thus the electric power is an electric signal corresponding to a frequency, a vibration width, and a vibration waveform corresponding to a wave transmitted to a local body.

As a result, the sound generated when the string vibrates is converted into an electrical signal sequentially through the local zone body 110, the piezoelectric material 151, the electrical signal is the electrical acquisition means (152, 153, 154, 155) provided in the piezoelectric element and It is transmitted to the outside through the electrical conduction means (120, 130).

Next, the electrical signal transfer operation of the present invention will be described with reference to the accompanying drawings.

2,

The electrical signal generated from the vibration of the string is obtained by the electrode films 152 and 153, and the obtained electrical signal is transmitted to the outside through the electrode lead terminals 154 and 155 and the electric conduction means 120 and 130. .

The acoustic pick-up apparatus of the present invention can be used by connecting a plurality of mutually, Figure 5 is a schematic configuration diagram showing an example of connecting the acoustic pickup apparatus according to the present invention by mutual wires, Figure 6 is a schematic configuration diagram above According to the electrical circuit diagram.

5,

The two-wire lead b of the acoustic pickup device c at the start position of the connection indicates that it is a redundant lead wire, and even if the redundant lead wire is erased, it does not affect the overall operation.

In addition, an electric signal generated in each of the acoustic pickup devices c, d, and e is finally outputted through f, which is one side lead wire of the acoustic pickup device e at the last position of the connection.

One end of the conductive wire f is provided with a plug 190 for smoothly connecting and disconnecting with additional devices such as an electric signal control device (FIG. 10), an electric signal modulation device (FIG. 11), and an amplifier (not shown). It is desirable to.

Next, an example of using the electric signal generated by the present invention will be described with reference to the accompanying drawings.

6 and 10,

In the F position of FIG. 6, which is the output terminal of the acoustic pickup device of the present invention, when i of FIG. 10 is connected to FIG. 6 g and j of FIG. 10 is connected to h of FIG. The acoustic pickup device of the present invention can adjust and output the generated electric signal.

6 and 11, in the F position of FIG. 6, when m of FIG. 11 is connected to g of FIG. 6 and n of FIG. 11 is connected to h of FIG. 6, respectively, viewed through o and p of FIG. 11. The acoustic pickup device of the present invention can modulate and output the modulated electric signal and the magnitude of the modulated electric signal.

Although the electric circuit diagram of FIG. 6 has been described in such a manner as to connect all the piezoelectric elements of the acoustic pick-up apparatus in parallel, the electric circuit configuration may be changed depending on the operation of the electric conduction means of the acoustic pick-up apparatus of the present invention. The electrical signal control device, the electrical signal modulation device, and the like can be separately added to one wire provided in each of the acoustic pickup devices.

It is preferable to include electromagnetic wave shielding means (not shown) in order to prevent signal distortion caused by electromagnetic waves from the outside in the path through which electricity is transmitted, such as the electric conduction means and the piezoelectric element and the plug constituting the present invention.

Finally,

8 is a specific example of using the string instrument acoustic pickup devices of the present invention in the conventional gayageum, and is located between the conventional string instrument body 210 and the conventional string 230, and corresponds to each string 230 It is arrange | positioned and is removable from a string instrument main body independently.

In particular, the acoustic pick-up apparatuses 100 corresponding to each string constitute an open string (231 in FIG. 9) for each string in correspondence with the string 213 of the conventional string instrument main body, thereby establishing a vibration node of the string. In addition, the vibration sound of the string is converted into an electrical signal and output.

According to the present invention, while using the conventional string instrument body and strings as it is without modification, there is an effect of immediately converting the player's playing sound to an electric signal at a point close to the strings, as well as all the electric signals that require the above-described electric signals. There is an effect that can be used as an input device for an electric device (not shown), an electric facility (not shown), an electric circuit (not shown), an electric component (not shown), and a digitizing device (not shown).

According to the present invention, since the local zone body and the piezoelectric element can be formed in various shapes, sizes, and shapes, it is possible to correspond to the number of one or a plurality of strings for all the strings belonging to one musical instrument, as well as gayageum, lyre, Not only can be used in place of Ahn, such as Agen, lyre, haegeum and the like, but also has the effect that can be mounted on the portion corresponding to the hanging in a conventional stringed instrument.

According to the present invention, since the present invention includes a feature for generating an electrical signal and a means for transmitting the electrical signal, the present invention is not only individually, but also a plurality of the present invention regardless of shape, size, shape and quantity. There is an effect that can be used electrically interconnected.

According to the present invention, there is an effect that can be used for all conventional string instruments such as gayageum, lyre, agen, haegeum, yanggeum, sled which are conventional string instruments.

According to the present invention, since the present invention is detachable independently from the string instrument body, there is an effect that can be provided in the form of parts for the string instrument body, which is derived by the present invention as well as the conventional string instrument.

According to the present invention, the volume control, the tone control, the volume amplification, the signal modulation and the modification of the electrical signal is input to the electrical signal before the electrical signal generated by the present invention is input to a conventional electrical signal amplifying apparatus. Electric string components may be derived in the form of additional means, such as digitization.

According to the present invention, in order to always mount the present invention at a specific position, a string instrument body having a predetermined portion such as grooves, bolt nuts, adhesives, moldings, etc., may be derived from the instrument body.

According to the present invention, since the present invention can use a conventional electric signal amplifying apparatus for expanding and reproducing the electric signal generated corresponding to the string instrument playing sound, the resonance part belonging to the main body of the conventional string instrument is erased, but the present invention is mounted. An electric string instrument body of the type having a string may be derived.

According to the present invention, the volume control, the tone control, the volume amplification, the signal modulation and transformation, and the digitization of the electric signal, which is equipped with the present invention and before the electric signal generated by the present invention is input to a conventional electric signal amplifying apparatus, are quantified. And other means, electric string instruments of the type having strings can be derived.

According to the present invention, an electric string instrument or string instrument model of the type having a string can be derived by mounting the present invention and adding a means for reproducing an electric signal to sound on the string instrument body.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and modifications belong to the appended claims.

Claims (11)

In addition to providing the means for supporting the strings, the local zone body is provided with a predetermined portion in order to install the piezoelectric elements and the material properties to convert transverse vibrations of the strings into longitudinal waves. A piezoelectric element having material properties and corresponding means for acquiring the electrical signal in response to a wave of longitudinal nature, the corresponding electrical signal being generated: Electrically conductive means capable of delivering electrical signals generated from piezoelectric elements: Means for the piezoelectric element to prevent natural deviation from the local body: Stringed acoustic pickup device comprising a. The method of claim 1, The string instrument acoustic pickup device, characterized in that the local zone body provides support means for the plurality of strings. The method according to claim 1 or 2, The said string instrument acoustic pick-up apparatus characterized by electrically connecting a plurality of Claims 1, 2, or a combination of Claims 1 and 2 using an electrically conducting means. The method according to claim 1 or 2 or 3, The string instrument sound pickup device further comprising a variable resistor, the electric signal output adjustment function. The method according to claim 1 or 2 or 3, The string acoustic pick-up device of claim 1, further comprising an external power source, an active element, and a variable resistor to add an electric signal modulation function. The method according to claim 4 or 5, And a digital output function after digitizing an electric signal by further including an integrated circuit device. The method according to claim 1 or 2 or 3 or 4 or 5 or 6, The acoustic instrument pickup device characterized in that it comprises an electromagnetic shielding means from the outside. A string instrument main body characterized in that the resonance portion is erased to mount the first or second or third or fourth or fifth or fifth or sixth or seventh term. A string instrument body provided with a predetermined portion for mounting at least one of claims 1 or 2 or 3 or 4 or 5 or 6 or 7 in a specific position. The method according to claim 8 or 9, A string instrument body further comprising a speaker for electrically connecting to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 using a conducting means. The method of claim 10, Stringed instruments featuring musical instrument models. drawing