WO2013077616A1

WO2013077616A1 - Apparatus for responding to sound

Info

Publication number: WO2013077616A1
Application number: PCT/KR2012/009841
Authority: WO
Inventors: 이춘우
Original assignee: Lee Chun-Woo
Priority date: 2011-11-22
Filing date: 2012-11-20
Publication date: 2013-05-30

Abstract

The present invention relates to an apparatus for responding to sound. The apparatus for responding to sound comprises: a case having a built-in substrate, and diffusing sound waves generated by a musical instrument; and a signal converter disposed on the substrate, and set to allow only frequencies of mutually different bandwidths to pass therethrough, in order to sense a sound wave signal transmitted through the case and filter the sensed sound wave signal to allow only the certain corresponding frequencies through and output the signal. The signal converter includes a plurality of sensors, and each sensor includes: an input portion to which a sound wave signal is input; an amplifying portion for amplifying a digital signal output from the input portion; a filter portion for allowing only frequencies in a certain bandwidth from the amplified signal to pass therethrough; a demodulating portion for demodulating the certain filtered frequencies; and a reshaping portion for reshaping the signal output from the demodulating portion.

Description

A device that responds to sound

The present invention relates to a device that responds to sound, and more particularly, to output a signal in real time according to the rhythm of the instrument by outputting a digital signal by filtering and converting sound waves generated from a musical instrument such as a piano using a plurality of sensors It relates to a device that responds to sound that can be made.

In general, various methods for listening to music are proposed, such as playing in a large space such as a stage of a concert hall, listening to it in an audience, and listening to music in a narrow space such as a music room.

In addition, the performance may be performed by various instruments such as a keyboard instrument such as a piano, a string instrument such as a cello, or an instrument such as an electronic piano.

In particular, an instrument such as an electronic piano enables a variety of genres to be played by storing various sound sources in a database stored in its own memory and outputting or mixing them when necessary.

In addition, people enjoy not only listening to music but also singing while listening to accompaniment. And place to sing is karaoke.

In this karaoke, a half-cycle, a microphone, a speaker, and the like are provided as a system, and the user plays a half-cycle and sings a song through a microphone, whereby the user hears his / her song through the speaker.

However, these conventional music listening methods or singing methods have the following problems.

First, the conventional music listening method is merely for the audience to listen to music, there is a problem that there is a limit to feel the music more bodily.

Second, in order for musicians to understand and play the music, it is required to practice through many repetitive learning, and there is a limit in terms of efficiency by simply listening to music as in the prior art.

Third, such a conventional method is that the audience can only listen to the performance of the piano by hearing, and it is difficult to visually see that the piano keyboard actually works, so there is a limit to listening to music using the five senses.

Fourthly, the conventional karaoke system allows the audience to simply listen to the performance of the karaoke cycle and the user's song, so that the user does not feel the song in an audiovisual perspective in real time, There is a problem that it is not known whether or not there is.

Fifth, the conventional karaoke system has a problem that, if the user is a sound level, no matter how much the user sings, the user cannot provide a function to heal the sound level.

The present invention has been made to solve the above problems, the object of the present invention is to detect a sound wave signal generated from a musical instrument in a remote place, and to filter the sound wave to output a signal to the sound that can be linked to other devices It is to provide a device to react.

In addition, another object of the present invention is to drive the drive in conjunction with the sound wave in the shape of the piano keyboard, so that when the music is played, the corresponding keyboard is also operated to respond to the sound that can visually listen to the music To provide.

Further, another object of the present invention is to mount the device driven by the sound waves generated from a keyboard instrument such as a piano to the chair, the keyboard of the drive unit mounted on the chair when the music is played in contact with the user's back It is to provide a device that responds to sounds that can sense music with the body.

Another object of the present invention is to provide a device that responds to sounds that can better understand the music, the practice efficiency can be improved by the body can feel the music by the drive unit mounted on the chair.

In addition, another object of the present invention is that when the user sings into the microphone and sings, only the corresponding command sound of the song is moved, and at the same time, the command sound of the corresponding sound of only the moving gun is output to the outside, in real time. It is to provide a device that responds to sounds that may enable a user to feel his or her audio visually.

In addition, another object of the present invention is to provide an apparatus that responds to a sound that enables the pitcher to hear his / her song note equivalent to the piano commandment sound.

Accordingly, in order to achieve the above object of the present invention, an embodiment of the present invention includes a case in which the substrate is embedded, the sound wave generated from the musical instrument is input and diffused; And

Disposed on the substrate and set to pass only frequencies of different bands, thereby detecting a sound wave signal transmitted through the case, filtering the detected sound wave signal, and passing only a specific frequency to output a signal Including a conversion unit,

The signal converting unit includes a plurality of sensors, each sensor comprising: an input unit to which a sound wave signal is input; An amplifier for amplifying the digital signal output from the input unit; A filter unit for passing only a frequency of a specific band of the amplified signal; A detector for detecting a filtered specific frequency; Provided is an apparatus for responding to sounds, each comprising a shaping section for shaping the signal output from the detector.

Another embodiment of the present invention is a case in which the substrate is embedded, the sound wave generated from the musical instrument is input and diffused; And

The signal converting unit includes a plurality of sensors, each sensor comprising: an input unit to which a sound wave signal is input; An amplifier for amplifying the digital signal output from the input unit; A filter unit for passing only a frequency of a specific band of the amplified signal; A detector for detecting a filtered specific frequency; Each of the shaping unit for shaping the signal output from the detector,

A plurality of keys are pivotally disposed in the frame by hinge pins, and each key is connected to a sensor of the signal converter so that only a corresponding key is driven by a specific frequency output from the signal converter. Provide a device to react.

A keyboard unit disposed in a chair, the keyboard unit being connected to the signal converter to drive only a corresponding key by a specific frequency output from the signal converter; And

By elastically wrapping the outside of the keyboard portion, the listener provides a device that responds to a sound including a flexible cover that can be in contact with the listener's back and transmit a feeling of driving the keyboard when sitting on a chair.

Another embodiment of the present invention includes a microphone for receiving a song sound;

A case in which a substrate is embedded and the sound waves generated from the microphone are input and diffused; And

It is composed of a plurality of keys arranged in a frame, the sound wave transmitted from the microphone connected to the signal conversion unit is converted to a predetermined frequency in the course of passing through the signal conversion unit is driven only by the specific frequency output by a specific frequency Keyboard portion; And

Provided is a device that responds to sound including a sound source generator that is in contact with only the corresponding key being driven and outputs a piano commandment sound corresponding to the key being touched.

An apparatus responsive to sound according to the present invention has the following advantages.

First, when a plurality of sensors designed to pass only a specific frequency are arranged, and a sound wave signal generated from another instrument is input to the plurality of sensors, only a sensor set to pass only a frequency corresponding to the corresponding scale among the plurality of sensors By reacting and outputting a signal, it can be linked with another instrument or apparatus.

Second, the piano may be linked by driving a keyboard by connecting a plurality of sensors to the piano keyboard one-to-one.

Third, by providing a device that responds to musical instrument sounds as a set of the first sound response section and the second sound response section, the keyboard corresponding to the left hand region and the key corresponding to the right hand region can be efficiently linked. .

Fourth, when the piano practicer is practicing the piano, the leader can grasp the level and practice state of the piano practicer by checking the keyboard operation of the piano in conjunction with the music listening device in another room.

Fifth, by arranging a signal converting part that responds to the sound of another instrument and a keyboard part linked to it, the corresponding key is also operated when the music is played, so that the user visually checks the driving of the keyboard to visually play the music. You can feel it and expect the interior effect.

Sixth, a signal converter for receiving sound waves and passing only a specific frequency, a keyboard part connected to the signal converter for generating sound, and a cover for elastically wrapping the keyboard part to convey the driving feeling of the keyboard to the listener's back to the chair. By attaching, when a keyboard instrument such as a piano is played, the keyboard mounted on the chair can operate as well, so that music can be experienced by the body.

Seventh, when the user sings into the microphone, only the key corresponding to the corresponding command of the song is moved, and at the same time, only the commanding piano sound of the corresponding key moving to the outside is output to the user in real time. It can make it possible to feel audiovisual.

Eighth, it is possible to heal the tone by making it possible for the pitcher to hear the equivalent of the piano commandment sound of his song.

1 is a perspective view schematically showing a device in response to a sound according to the present invention.

FIG. 2 is a diagram schematically illustrating a structure of a plurality of signal converters illustrated in FIG. 1.

FIG. 3 is a view schematically illustrating the structure of the filter unit illustrated in FIG. 2.

4 is a perspective view illustrating a state in which an output unit is disposed in a signal conversion unit as another embodiment of the device in response to the sound illustrated in FIG. 1.

FIG. 5 is a perspective view illustrating another embodiment of the present invention in which a device that responds to sound is provided in one set so that both hands can be supported when playing the piano keyboard.

FIG. 6 is a view showing a state in which a device responsive to sound is applied to a keyboard musical instrument as another embodiment of the present invention.

FIG. 7 is a side view showing the structure of the keyboard shown in FIG. 6. FIG.

FIG. 8 is a side view illustrating an exemplary embodiment of the keyboard unit illustrated in FIG. 6.

9 is a side view illustrating another example of the keyboard unit shown in FIG. 6.

FIG. 10 is a perspective view illustrating a wall-type piano to which a device responding to sound is applied as another embodiment of the present invention. FIG.

FIG. 11 is an exploded perspective view showing the internal structure of the wall-shaped piano shown in FIG. 10.

12 is a view showing that the device responding to the sound is applied to the chair as another embodiment of the present invention.

FIG. 13 is an exploded perspective view schematically showing the structure of a device in response to the sound shown in FIG. 12.

14 is a view showing the structure of a keyboard unit provided in the chair shown in FIG.

15 is a view showing another embodiment of the keyboard unit shown in FIG. 14.

16 is a view showing still another embodiment of the keyboard unit shown in FIG. 14.

FIG. 17 is a diagram illustrating a state in which a listener listens to music by a device responsive to a sound for converting a song voice into a piano commandment sound according to another embodiment of the present invention.

FIG. 18 is an exploded perspective view schematically showing the structure of a device in response to the sound shown in FIG. 17.

FIG. 19 is a side view illustrating the structure of the keyboard unit illustrated in FIG. 17. FIG.

20 is a side view illustrating another example of the keyboard unit illustrated in FIG. 17.

The present invention is a case in which the substrate is embedded, the sound wave generated from the musical instrument is input and diffused; And

Hereinafter, a device responsive to an instrument sound according to an embodiment of the present invention will be described in detail by the accompanying drawings.

As shown in Figs. 1 to 3, the apparatus 1 responsive to the instrument sounds proposed by the present invention comprises a case (Case; C) in which a substrate 3 is embedded and sound waves are diffused; An output unit 5 provided inside the case C and outputting a sound wave signal input from an instrument such as a piano; A signal converter having a plurality of sensors 7a ... 7n to detect a sound wave signal from the output unit 5, filter the detected sound wave signal, and pass only a specific frequency to output an electric signal ( Sensor Portion;

In the device having such a structure, the case (C) has a suitable space therein, so that the sound wave signal output through the output unit 5 can be diffused into the inside of the case (C).

The output unit 5 preferably includes a speaker, and amplifies the sound wave signal transmitted from the musical instrument and outputs the sound wave signal to the inner space of the case C.

At this time, the case (C) forms a plurality of passages separated by partitions therein and connects the output unit 5 and the respective signal converters 7 so that sound waves are better than the respective signal converters 7. Can be delivered effectively.

The output unit 5 preferably includes a speaker, and amplifies the sound wave signal transmitted from the musical instrument P and outputs the amplified sound signal to the inner space of the case C.

At this time, the output unit 5 may be connected to an external microphone, so that a piano sound may be transmitted. Alternatively, a microphone may be provided in the case C.

Of course, the output unit 5 may be omitted, and sound waves may be directly transmitted to the signal converter 7.

The signal converter 7 includes a plurality of

sensors

7a, 7b, 7c ... 7n disposed on the substrate 3. Each

sensor

7a, 7b, 7c ... 7n is designed to filter different frequencies, so that only the sensor corresponding to the transmitted sound wave signal reacts to output a digital signal.

At this time, the plurality of sensors (7a, 7b, 7c ... 7n) is preferably arranged 88 can be connected to a conventional piano keyboard. Of course, the number of

sensors

7a, 7b, 7c ... 7n can also be appropriately added or subtracted according to the piano keys.

In more detail, as shown in FIGS. 2 and 3, the signal converter 7 includes a plurality of

sensors

7a, 7b, 7c... 7n, and each

sensor

7a, 7b. , 7c... 7n are input units 13 to which sound wave signals generated from the output unit 5 are inputted; An amplifier 14 for amplifying the digital signal output from the input unit 13; A filter unit 19 for passing only frequencies of a specific band among the amplified signals; A detector 15 for detecting the filtered specific frequency; Each of the shaping unit 17 for shaping the signal output from the detector (15).

In the plurality of sensors having such a structure, the input unit 13 includes a piezoelectric microphone using a piezoelectric effect. That is, the piezoelectric microphone utilizes the piezoelectric effect of generating an electric voltage by generating an electric charge proportional to the deformation when a deformation occurs by applying an external force to the material.

The input unit 13 has a structure in which a diaphragm, an acoustic resistance, a rod, and a ceramic element are disposed in the case 13. In this case, the ceramic device generates electric charge with respect to the bending stress, and a negative pressure is transmitted to the ceramic device by the diaphragm and the rod, thereby generating a voltage.

Of course, in addition to the piezoelectric microphone may include any device capable of converting a sound wave signal into an electrical signal.

As such, the sound wave passing through the input unit 13 may be amplified to a predetermined frequency or more in the course of passing through the amplifier 14.

The amplified signal may be output only by a frequency of a specific band by the filter unit 19.

In other words, the filter unit 19 has a conventional filter structure in which a resistor, a plurality of capacitors C1 and C2, and an integrated circuit and a differential circuit are combined by a diode.

The cutoff frequencies of the first capacitor C1 and the second capacitor C2 may be determined by the following equation. In other words,

Cutoff frequency of the first capacitor: fc1 = 1 / 2πRC1 -------- Equation 1

Cutoff frequency of the second capacitor: fc2 = 1 / 2πRC2 -------- Equation 2

(fc1: first blocking frequency, fc2: second blocking frequency, R: resistance

C1, C2: first and second capacitors)

As can be seen from

Equations

1 and 2, the first cutoff frequency and the second cutoff frequency can be set by appropriately varying the capacitance of the capacitor or the resistor.

Therefore, when the target frequency f satisfies the condition of fc1 < f < fc2, that is, only a frequency corresponding to the intermediate band of the first and second blocking frequency bands can be passed.

As such, the signal passing through the filter unit 19 passes through the detector unit 15. The detector 15 means a conventional detection circuit using a diode.

In addition, the signal converted by the detector 15 is converted to a frequency of a predetermined pattern by passing through the shaping section 17.

In this manner, by varying the capacitances of the capacitors or resistors disposed in the plurality of

sensors

7a, 7b, 7c .... 7n, respectively, preferably 88

sensors

7a, 7b, 7c .... The target frequency of 7n) can be sequentially set differently.

For example, sensor 1 passes only the frequencies in the 260-262 Hz band, sensor 2 290-294Hz, sensor 3 325-330Hz, sensor 4 345-349Hz, sensor 5 390-392Hz, 6 Sensor No. 435-440Hz, Sensor No. 7 490-495Hz, Sensor No. 8 can only pass frequencies in the band 520-524Hz.

In this way, the frequencies passed by the

sensors

7a, 7b, 7c .... 7n are set differently to correspond to the frequencies of sound waves input among the plurality of

sensors

7a, 7b, 7c .... 7n. Only any sensor can be operated.

For example, when the piano player presses the "degree" key, a sound wave corresponding to the "degree" reaches the output unit 5, and the output unit 5 transmits the sound wave to the signal converting unit 7. do.

When a "degree" sound wave is transmitted to the signal conversion unit 7, a sensor (for example, 7a) set to pass a frequency corresponding to "degree" in the signal conversion unit 7 is activated, and another sensor 7b is operated. , 7c .... 7n) does not work.

Therefore, only the sensor 7a corresponding to the sound wave corresponding to "degree" is operated, and the sensor 7a outputs a signal.

As such, when a sound wave of a predetermined frequency is detected, the signal converter 7 according to the present invention operates only a sensor corresponding to the sound wave among the plurality of sensors 7b, 7c.... Only can be converted and printed.

Although described above by a conventional filter, the present invention is not limited thereto and may include a SAW (Surface Acoustic Wave).

That is, the saw filter is a filter in which a surface acoustic wave is generated when the electrode having a comb-like electrode is disposed on the surface of the piezoelectric material so that only a specific frequency synchronized with the acoustic wave frequency is passed and the remaining frequency is attenuated.

4 shows a state in which the speaker 5 is arranged for each of the plurality of sensors 7b, 7c.... 7n as another embodiment of the signal converter. That is, in the previous embodiment, one speaker is provided in the case, but in this embodiment, there is a difference in that the speaker 5 is mounted for each sensor 7b, 7c.... 7n.

In this manner, by mounting the speaker 5 for each of the sensors 7b, 7c, ... 7n, the sensitivity of the sound wave input can be further increased.

On the other hand, Figure 5 as another embodiment of the present invention, the device that responds to the sound of the instrument can be divided into two sets (Set) for the left hand area and the right hand area.

As shown, the device responsive to the sound of the instrument includes a first sound response unit 20 corresponding to the keyboard played with the left hand when playing the piano; And a second sound response unit 22 corresponding to the keyboard played with the right hand.

The first and second

sound response units

20 and 22 have the same structure as the device 1 responding to the instrument sounds, but there are differences that are divided into a left hand region and a right hand region.

That is, the first sound response unit 20 is connected to a key arranged in the region playing with the left hand, and the second sound reaction unit 22 is connected to a key arranged in the region playing with the right hand.

Therefore, it is possible to link more efficiently by transmitting sound waves by dividing into left and right hand regions.

Hereinafter, the operation of the device for outputting a signal in response to the sound of the musical instrument according to an embodiment of the present invention will be described in more detail by the accompanying drawings.

As shown in Figs. 1 to 3, when playing is started by a keyboard musical instrument P, for example, a piano, disposed at a distance from a device 1 for outputting a signal in response to a sound of an instrument, sound waves The signal is transmitted to the device 1 in response to the instrument sound.

For example, when the piano player presses the "degree" key, a sound wave corresponding to the "degree" reaches the output unit 5.

The output unit 5 generates sound waves corresponding to "degrees", and the generated sound waves may be diffused through the inner space of the case 13.

When the sound wave is diffused inside the case 13, the input unit provided in the plurality of sensors 7b, 7c... 7n disposed inside the case 13, that is, the microphone, senses the sound wave.

When a plurality of microphones all sense sound waves, a voltage is generated in each microphone by the sound pressure being transmitted to the ceramic element by the diaphragm and the rod.

Then, an electric signal is generated according to a change in voltage generated in each microphone, and each electric signal is amplified by each amplifier 14 and then input to the filter unit 19.

At this time, the filter unit 19 provided in each of the plurality of sensors 7b, 7c .... 7n is set to filter different frequencies.

Therefore, only the sensor 7a set to pass only the frequency corresponding to the "degree" outputs a signal in response to the sound wave of the "degree", and the remaining sensors output the signal by blocking the input sound wave signal from the filter 19. Does not output

As a result, only a corresponding signal of a specific frequency passing through a specific sensor among the plurality of sensors 7b, 7c... 7n may be output.

The output signal may be transferred to another musical instrument or device and interlocked.

As such, an example in which the instrument is interlocked by a signal output from the device 1 in response to sound is shown in FIGS. 6 and 7.

As shown, the apparatus 1 responding to musical instrument sounds is applied to a keyboard instrument such as a piano.

That is, the plurality of sensors provided in the signal converter 7 of the device 1 responding to the instrument sound are in a state of being connected one-to-one to the keyboard 23 of the keyboard unit 20. At this time, the keyboard 23 has a structure in which sound is generated by the strings, like a keyboard of a conventional piano.

Since the signal converter 7 has the same structure as the signal converter, detailed description thereof will be omitted below.

The keyboard unit 20 includes a frame 21; A keyboard 23 pivotally disposed on the frame 21 by a hinge pin 25; A plurality of motors (M) disposed on the frame 21 to generate a vertical driving force and connected to the signal converter 7 to drive the keyboard 23 by driving by signals; A spring member S is disposed below the keyboard 23 to mitigate an impact when the motor M is raised and lowered.

Therefore, when a signal having a predetermined frequency is transmitted from the signal converter 7, the shaft 27 of the motor M corresponding to the signal is driven up and down.

At this time, the upper end of the drive shaft 27 is connected to the long hole (h) formed in the keyboard 23 by the connecting pin 26.

In addition, when the drive shaft 27 of the motor (M) is raised and lowered, the spring member (S) can be properly absorbed and buffered the shock transmitted to the keyboard (23).

This spring member S preferably comprises a compression spring. And the upper part of this spring member S is in contact with the bottom face of the keyboard 23, and the lower part is a state elastically supported by the middle part of the shaft 38 of the motor M. As shown in FIG.

Therefore, when the shaft 38 of the motor M advances back and forth, the spring member S can appropriately absorb and cushion the shock transmitted to the keyboard 23.

As a result, when the motor M is driven by the signal of the signal conversion unit 7, the drive shaft 27 of the motor M is raised and lowered, and the keyboard 23 is caused by the lifting and lowering of the drive shaft 27. In addition, the corresponding sound can be reproduced by being moved up and down about the hinge pin 25.

On the other hand, another embodiment of the keyboard portion 9 is shown in FIG. As shown, the key portion 9 according to the present embodiment has a difference in that the spring member S is disposed between the lifting shaft 28 and the keyboard 23 of the motor M as compared with the previous embodiment. have.

That is, the other keyboard portion 9 in this embodiment includes a frame 21; A keyboard (23) pivotally arranged on the frame (21) by a hinge pin (36); A motor (M) disposed on the frame 21 to generate a vertical driving force and connected to one of the signal converters 7 to raise and lower the shaft 28 by a signal; Spring member (S) disposed between the shaft 28 of the motor (M) and the lower portion of the keyboard 23 to raise and lower the keyboard (23) during the lifting and lowering of the shaft (28), to mitigate the impact (Spring member; S) It includes.

In the key portion 9 having such a structure, the support plate 29 is disposed at the upper end of the shaft 29. The lower end of the spring member S is more stably supported on the upper surface of the support plate 29.

Therefore, when the shaft 28 of the motor M moves up and down, the keyboard 23 can make a hinge movement about the hinge pin 25 by the spring member S. As shown in FIG.

Meanwhile, another embodiment of the keyboard portion is shown in FIG. In this embodiment, there is a difference in applying the electromagnet method. That is, it has the structure which provided the support bracket B in the upper part of the frame 21, and arrange | positioned the electromagnet 31 in the upper part of this support bracket B. As shown in FIG.

And the shaft 28 which drives the keyboard 23 is attached to this support bracket B by bearings or the like.

At this time, the upper portion of the shaft 28 is connected to the keyboard 23 by the rotary pin (32). In addition, by the plate member 30 is provided in the middle portion of the shaft 28, when the magnetic force is applied can be moved up and down and coupled to or separated from the electromagnet 31.

At this time, the plate member 30 is in a state that is elastically supported in the direction of the keyboard 23 by the spring (S).

Therefore, when power is supplied to the electromagnet 31 by the signal of the signal converter 7, the magnetic force is generated to pull the plate member 30 of the shaft 28 so that the shaft 28 is the keyboard 23. D) in the opposite direction, that is, in the direction of the frame 21.

On the contrary, when the electric power is cut off by the electromagnet 31, the plate member 30 is pushed toward the keyboard 23 by the spring S, and the keyboard 23 is returned to its original position.

On the other hand, Figure 10 and Figure 11 shows, as another embodiment of the present invention, a device that responds to the sound of music is applied to the wall-type piano.

That is, when a piano is mounted on a wall and an external sound wave is transmitted by applying a device that responds to sounds on the wall-type piano, the keyboard of the wall mounted piano is activated, and the user visually sees the keyboard. You can experience the music.

The wall-type piano will be described in more detail, and in describing the music listening apparatus, the same components and same reference numerals are used for the same components as in the previous embodiment, and redundant descriptions are omitted.

The music listening device 40 includes a frame 42 mounted to a wall; A signal converter 46 mounted on the frame 42 and outputting only a signal corresponding to a specific frequency by receiving / filtering sound waves; It has a piano keyboard shape, and includes a keyboard unit 44 for driving only the corresponding keyboard by a specific frequency output from the signal converter 46.

In the music listening apparatus 40, the frame 42 may be fixed to a wall or the like, and the signal conversion unit 46 and the keyboard unit 44 are mounted on the frame 42.

Therefore, when fixing this music listening device 40 to a wall, the keyboard part 44 can be visually recognized from the outside.

The keyboard 44 is connected to the signal converter 46 to drive only a specific key by a predetermined signal output from the signal converter 46.

In this case, since the keyboard 44 has the same structure as the keyboard shown in FIGS. 7, 8, and 9, detailed descriptions thereof will be omitted.

As described above, when the music performance device 40 is fixed to the wall and the piano playing sound is transmitted, the signal converter 46 detects the sound wave. Then, the sensor corresponding to the frequency of the sound wave among the plurality of

sensors

7a, 7b, 7c ... 7n reacts to pass only a specific frequency. Then, the corresponding keyboard of the keyboard unit 44 connected to this sensor is driven.

Therefore, since the keyboard 23 is driven visually from the outside, it is possible to visually listen to music as well as to listen to the reproduction sound in an audio manner.

12 to 15 illustrate a case in which a device responding to music sounds is applied to a chair as another embodiment of the present invention.

That is, by mounting a keyboard applied to the piano to the back of the chair and applying a device that responds to the sound, the keyboard mounted on the chair operates when external sound waves are transmitted, and the user operates the keyboard. Feeling by the body can feel the music.

In more detail, the music listening device 50 proposed by the present invention includes a chair 52; A signal converter 54 disposed on the back of the chair 52 to receive / filter sound waves and output only a signal corresponding to a specific frequency; A keyboard section 56 having a piano keyboard shape and driving only the corresponding keyboard by a specific frequency output from the signal converting section 7; By elastically wrapping the outside of the keyboard portion 56, the listener includes a flexible cover (58) that can transmit the driving feeling of the keyboard in contact with the listener's back when sitting on the chair 52.

In the music listening apparatus 50 having such a structure, the chair 52 means a conventional chair. Therefore, the listener can listen to the music in a state of sitting on the chair 52 while leaning against the back of the chair.

In addition, the chair 52 is disposed a certain distance away from the keyboard musical instrument (P), preferably the piano. Thus, the listener can listen to the music at a position appropriately separated from the piano.

The signal converter 54 is disposed in the width direction of the back of the chair 52. The signal converter 54 senses the sound wave transmitted from the piano, and passes only a specific frequency of the frequency band of the sound wave so that only a specific key 57 of the keyboard 56 is driven.

Since the signal converter 54 has the same structure as the signal converter of the above-described embodiment, detailed description thereof will be omitted below.

The keyboard 56 is composed of a plurality of keyboards 57, each of which is connected one-to-one to the sensors 59 of the signal converter 54. Therefore, when the signal conversion section 54 outputs a signal, the signal is transmitted to the corresponding keyboard 57 of the keyboard section 56.

Since the plurality of keys 57 have the same structure, only one key will be described below.

As shown in FIG. 14, the keyboard portion 56 has a structure similar to that of the above-described embodiment, and is covered with a flexible cover 58 and is disposed in an upright position on the back of the chair 52. There is this.

That is, the keyboard 56 includes a base 60 disposed on the back of the chair 52; A keyboard 57 disposed pivotally on the base 60 by a hinge pin 62 and having a flexible cover 58 covered therein; A motor (M) disposed on the base to generate an up and down driving force, and connected to the signal converter 54 to drive the keyboard 57 up and down by driving by a signal; A spring member S is disposed below the keyboard 57 to mitigate an impact when the motor M is raised and lowered.

In the keyboard portion 56 having such a structure, the motor M preferably means a motor in which the shaft 64 moves back and forth. The motor M is connected one-to-one to the sensor 59 of the signal converter 54.

Therefore, when a signal is transmitted from the signal converter 54, the motor M is driven so that the shaft 64 of the motor M is advanced back and forth.

At this time, the shaft 64 is moved back and forth within a range of a predetermined distance or more.

Accordingly, the keyboard 57 is pivotally driven in the opposite direction of the motor M along the arrow a in the direction of the outer side (I) of the reference line L about the hinge pin 62 (ie, the conventional piano keyboard). In the opposite direction to the driving direction).

As a result, the keyboard 57 is driven in accordance with the musical scale, and the flexible cover 58 contacts the back to transmit the sense of sound, and the listener feels the sense of sound through the flexible cover 58 in contact with the back to feel the music tactilely. Can be.

The spring member S preferably comprises a compression spring. And the upper part of this spring member S is in contact with the bottom face of the keyboard 57, and the lower part is elastically supported by the support plate 63 with which the motor M shaft 38 was provided.

Therefore, when the shaft 64 of the said motor M advances back and forth, the spring member S can absorb the shock transmitted to the keyboard 57 suitably, and can buffer it.

The keyboard portion 56 may be modified in other forms, and one example is shown in FIG. 15. This embodiment has the same structure as the keyboard portion shown in FIG. 8, except that the flexible cover 58 is covered on the outside of the keyboard 57, and the keyboard portion 56 is disposed upright on the back of the chair. There is this.

That is, in the present embodiment, the keyboard portion 56 has a spring member S disposed between the shaft 64 of the motor M and the lower portion of the keyboard 57 so that the keyboard 57 moves forward and backward of the shaft 64. Spring member (Spring member; S) for advancing back and forth, and alleviating the impact.

A support plate 63 is disposed at the front end of the shaft 64, and the rear end of the spring member S is elastically supported on the front surface of the support plate 63.

Therefore, when the shaft 64 of the motor M advances back and forth, the keyboard 57 can make a hinge movement about the hinge pin 62 by the spring member S. FIG.

As a result, the keyboard 57 is hinged according to the scale, and the flexible cover 58 contacts the back to transmit the sound, and the listener feels the sound through the flexible cover 58 touching the back and feels the music in a tactile sense. You can feel it.

Meanwhile, another embodiment of the keyboard portion is shown in FIG. The keyboard of the present embodiment has the same structure as the keyboard shown in FIG. 9, except that the flexible cover 58 is covered on the outside of the keyboard 57, and the keyboard 56 is disposed upright on the back of the chair. There is a difference.

That is, the support bracket B is provided in the front surface of the base 60, and it has a structure which arrange | positioned the electromagnet 66 behind this support bracket B. As shown in FIG.

And the shaft 64 which drives the keyboard 57 is attached to this support bracket B so that forward-backward movement is possible by a bearing.

At this time, the tip of the shaft 64 is in a state connected to the keyboard 57 by the rotary pin (67). In addition, the rear end of the shaft 64 is provided with a plate member 68, it can be coupled to or separated from the electromagnet 66 by moving back and forth when the magnetic force is applied.

At this time, the plate member 68 is elastically supported in the direction of the base 60, that is, the back of the chair by the spring (S).

Therefore, when power is supplied to the electromagnet 66 by the signal of the signal conversion section 54, the magnetic force is generated to pull the plate member 68 of the shaft 64 in the direction of the keyboard 57, so that the keyboard ( 57) may touch the listener's back.

On the contrary, when the electric power to the electromagnet 66 is cut off, the plate member 68 is moved back toward the base 60 by the spring S, and the keyboard 57 is returned to its original position.

Referring to the operation process of the chair-type music listening device, when the listener is listening to music, the power switch 51 of the music listening device 50 is turned on in the state where the chair is first seated on the chair 52. do.

Then, when playing is started by the keyboard musical instrument P disposed at a predetermined distance, for example, a piano, a sound wave signal is transmitted to the music listening device 50 provided in the chair 52.

For example, when the piano player presses the "degree" key, a sound wave corresponding to the "degree" reaches the output unit 55 of the music listening apparatus 50 through the microphone.

The output unit 55 generates sound waves corresponding to "degrees", and the generated sound waves may be diffused through the inner space of the case C.

When the sound wave is diffused inside the case C, the microphone of the input unit 13 (Fig. 2) disposed inside the case C senses the sound wave.

When the microphones sense sound waves, in each microphone, the sound pressure is transmitted to the ceramic element by the diaphragm and the rod, thereby generating voltages respectively.

Then, an electric signal is generated according to a change in voltage generated in each microphone, and each electric signal is amplified by each amplifier 14 (FIG. 2) and then input to each filter 19 (FIG. 2).

At this time, the filter unit 19 (FIG. 2) provided in each of the plurality of

sensors

7a, 7b, ... 7n is set to filter different frequencies.

Therefore, only the sensor set to pass only the frequency corresponding to the "degree" outputs a signal to the keyboard portion 56 in response to the sound wave of the "degree", and the remaining sensors output the input sound wave signal to the filter portion 19 (degrees). It does not output a signal by blocking in 2).

At this time, the plurality of

sensors

7a, 7b... 7n are connected to the keyboard 57 of the keyboard 56 one-to-one.

Therefore, when a specific sensor among the plurality of

sensors

7a, 7b ... 7n transmits a signal corresponding to "degree" to the keyboard unit 56, this signal is transmitted in real time only to the specific keyboard.

Then, when a signal is transmitted to the corresponding key, the shaft 64 moves forward and backward by driving the motor M. FIG. As the shaft 64 moves forward and backward, the keyboard 57 also moves up and down about the hinge pin 62.

In this case, the keyboard 56 is elastically wrapped by the flexible cover 58. Therefore, when a key corresponding to "degrees" is driven, this driving feeling can be transmitted to the flexible cover 58, and finally to the listener's back.

As a result, the listener can feel the music played from the piano by the keyboard portion 56 and the flexible cover 58 in real time, and can feel the sound with his body.

On the other hand, Figure 17 to 20 as another embodiment of the present invention, by connecting the microphone to the piano with a signal conversion unit, the device for generating a command sound by filtering the sound waves transmitted from the microphone so that only the corresponding key is driven Is suggested.

As shown, the music listening apparatus 70 proposed by the present invention is placed on the table 72.

The music listening device (70) includes: a microphone (74) in which the user sings around the user's mouth; A signal converter (76) connected to the microphone (74) and converting an electrical signal sheared from the microphone (74) into sound waves to receive / filter and output only a signal corresponding to a specific frequency; A keyboard unit (79) having a piano keyboard (77) shape and driving only the corresponding key by a specific frequency output from the signal converting unit (76); An output unit for outputting the commanded piano sound generated from the piano sound source generator 81 that generates a piano sound of the command when the keyboard 77 of the keys 77 of the keyboard unit 79 is driven. And 80.

The signal converter 76, the keyboard 79, and the output 80 are mounted to the frame 70.

In the music listening apparatus 70 having such a structure, the table 72 means a conventional table. Thus, the user can enjoy the audio-visual implementation by the music listening device 70 placed on the table 72.

The signal converting unit 76 converts an electrical signal transmitted from the microphone 74 into a sound wave, detects the sound wave, and passes only a specific frequency in the frequency band of the sound wave, thereby specifying a specific key 77 of the keyboard unit 79. Only run.

In more detail with respect to the signal converter 76, the signal converter 76 includes a case 83 in which a substrate 82 is embedded and sound waves can be diffused; A speaker (84) provided inside the case (83) and connected to the microphone (74) to output a sound wave signal in which a song voice is converted into an electrical signal by the microphone (74); The sensor 84 includes a plurality of sensor units 85 that detect a sound wave signal from the speaker 84, filter the detected sound wave signal, and pass only a specific frequency to output an electric signal.

In the signal conversion unit having such a structure, the case 83 has the same structure as the case of the signal conversion unit described in the above embodiments, and thus the detailed description thereof will be omitted.

The sound wave introduced into the case 83 is transmitted to the sensor unit 85 so that the sound wave signal is filtered and converted into a digital signal corresponding to a specific frequency and output.

In addition, since the sensor unit 83 includes the same structure as the sensor unit described in the above embodiments, that is, the input unit, the amplifier unit, the filter unit, the detector unit, and the shaping unit, the structure of the sensor unit 83 and Detailed description of the operating relationship is omitted.

Therefore, the digital signal output from the sensor unit 83 is transmitted to the keyboard unit 79, so that only the keyboard corresponding to the digital signal is driven so that a commanding sound can be generated.

In more detail, the keyboard portion 79 includes a base 86; A key 88 pivotally disposed on the base 86 by a hinge pin 87; A motor (M) disposed on the base (86) to generate a vertical driving force, and connected to one of the plurality of sensor units (85) to drive the keyboard (88) up and down by driving by signals; It is disposed below the keyboard 88 includes a spring member (S) for mitigating the shock during the lifting output of the motor (M).

In the keyboard portion 79 having such a structure, the motor M preferably includes a lifting motor M. As shown in FIG. The motor M is connected to the plurality of sensor units 85 one-to-one.

Therefore, when signals are transmitted from the plurality of sensor units 85, the motor M drives, so that the drive shaft 89 of the motor M is raised and lowered.

At this time, the drive shaft 89 is connected to the keyboard 88 by the connecting pin 90.

The drive shaft 89 is moved up and down within a range of a predetermined distance or more. Accordingly, the keyboard 88 is pivotally driven in the direction of the motor M along the arrow a about the hinge pin 87 in the inner (II) direction of the reference line L (i.e., the conventional piano keyboard). Driving direction) can be visually felt by the user.

As a result, the plurality of keys 88 are driven in accordance with the corresponding command sound so that the user can visually know the command of the user's own song sound.

The spring member S preferably comprises a compression spring. And the upper part of this spring member S is in contact with the bottom face of the keyboard 88, and the lower part is elastically supported by the plate member 95 of the upper part of the drive shaft 89 of the motor M. As shown in FIG.

Therefore, when the drive shaft 89 of the motor M is raised and lowered, this spring member S can absorb and cushion the shock transmitted to the keyboard 88 as appropriate.

As a result, when the motor M is driven by the signal of the sensor unit 85, the drive shaft 89 of the motor M is raised and lowered, and the key 88 is also hinged by the lifting and lowering of the drive shaft 89. By moving up and down about the pin 87, the user can visually see the commandment of his song as a keyboard.

Meanwhile, another embodiment of the keyboard portion is shown in FIG. In this embodiment, there is a difference in applying the electromagnet method. That is, it has the structure which provided the support bracket B in the upper part of the base 86, and arrange | positioned the electromagnet 91 in this support bracket B. As shown in FIG. And the drive shaft 92 which drives the keyboard 88 is attached to this support bracket B by bearings or the like.

At this time, the upper portion of the drive shaft 92 is connected to the keyboard 88 by the rotary pin 93. In addition, the lower portion of the drive shaft 92 is provided with a plate member 94 which is coupled to or separated from the electromagnet 91 by the magnetic force. At this time, the plate member 94 is elastically supported in the direction of the base 86 by the compression spring (S).

Therefore, when power is supplied to the electromagnet 91 by the sensor unit 85 signal, magnetic force is generated to pull the plate member 94 of the drive shaft 92 so that the drive shaft 92 is opposed to the keyboard 88. As you descend in the direction, you will pull the keyboard.

On the contrary, when the electric power is cut off by the electromagnet 91, the plate member 94 is pushed by the spring S, and the keyboard 88 returns to the original position.

The output unit 80 includes a plurality of piano sound source generators 81 spaced apart from each other on a proximal end of each of the plurality of piano keys 77.

Each of the plurality of piano sound source generators 81 stores a command sound (for example, a piano sound corresponding to "degrees") corresponding to the corresponding keyboard 77, and the stored sound is stored in the corresponding keyboard 77. When it comes in contact with the piano is output through the speaker provided in each of the plurality of piano sound source generator (81). Since this configuration is similar to the known doorbell (buzzer), the detailed description of this embodiment will be omitted.

Although described above as having a piano sound source generating unit, the present invention is not limited to this, it is also possible to generate the sound by a string like a normal keyboard.

Hereinafter, the operation of the microphone-associated music listening device according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

As shown in Figs. 17 to 20, when the user places the microphone 74 around his mouth and sings, the song sound is changed into an electric signal in the microphone 74, and the electric signal is a speaker ( 84) is converted into a sound wave signal.

For example, when a sound wave corresponding to "degree" in a user's song reaches the speaker 84 of the music listening device 70 through the microphone 74, the speaker 84 corresponds to "degree". Sound waves are generated, and the generated sound waves may be diffused through the inner space of the case 83.

When the sound wave is diffused in the case 83, the input unit 13 (FIG. 2) provided in the plurality of sensor units 85 disposed in the case 83, that is, the microphone, senses the sound wave.

When all of the plurality of input units 13 (FIG. 2) sense sound waves, voltages are generated in each input unit 13 (FIG. 2) by transmitting sound pressure to the ceramic element by the diaphragm and the rod.

Then, an electrical signal is generated according to a change in voltage generated in each input unit 13 (FIG. 2), and each electric signal is amplified by each amplifying unit 14 (FIG. 2) and then each filter unit 19 (FIG. 2) is entered.

At this time, the filter unit 19 (FIG. 2) provided in each of the plurality of sensor units 85 is set to filter different frequencies.

In this manner, by varying the capacitances of the capacitors or resistors respectively disposed in the plurality of

sensors

7a, 7b, 7c .... 7n; Fig. 1, the 88

sensors

7a, 7b, 7c. 7n; target frequencies of FIG. 1 can be sequentially set differently.

In this way, the frequencies passed by the

sensors

7a, 7b, 7c .... 7n; Fig. 1 are set differently, so that the inputs of the plurality of

sensors

7a, 7b, 7c .... 7n; Only any sensor corresponding to the frequency of the sound wave to be operated can be activated.

Therefore, only the sensor unit 85 set to pass only the frequency corresponding to the "degree" outputs a signal to the keyboard unit 79 in response to the sound wave of the "degree", and the remaining sensor units filter the input sound wave signal. The signal is not output by being blocked by the unit 19 (Fig. 2).

As a result, of the plurality of sensor units 85, only the sensor corresponding to the frequency of the sound wave corresponding to "degree" is operated, and this sensor outputs a signal to the keyboard unit 79.

Therefore, when a specific sensor among the plurality of sensor units 85 transmits a signal corresponding to "degree" to the keyboard unit 79, the signal is real-time only in the corresponding keyboard 77 connected one-to-one to the specific sensor unit 85 in real time. Is passed to.

When a signal is transmitted to the corresponding keyboard 77, the drive shaft 89 moves forward and backward by driving the motor M. FIG. As the drive shaft 89 moves forward and backward, the keyboard 77 also pivots about the hinge pin 87. Accordingly, the user can visually grasp one note of his song as a keyboard.

In addition, the pivoting keyboard 77 comes into contact with the corresponding piano sound source generator 81, and the contacted piano sound source generator 81 outputs a commanded sound corresponding to the touching keyboard 77. . Accordingly, the user can visually grasp one sound of his or her song.

Such a music listening device 70 may be provided in a karaoke room, a music practice room, a living room of a home house, and in particular, when the user has a sound level, the user may grasp the sound of his or her song visually, and may be effectively used for sound level treatment. have.

The present invention relates to a device that responds to instrument sounds, and more particularly, by filtering and converting sound waves generated from an instrument such as a piano by using a plurality of sensors to output digital signals in real time according to the rhythm of the instrument. It relates to a device that can output.

Claims

A case in which a substrate is inherent, and sound waves generated from the musical instrument are input and diffused; And

Disposed on the substrate and set to pass only frequencies of different bands, thereby detecting a sound wave signal transmitted through the case, filtering the detected sound wave signal, and passing only a specific frequency to output a signal Including a conversion unit,

The signal converting unit includes a plurality of sensors, each sensor comprising: an input unit to which a sound wave signal is input; An amplifier for amplifying the digital signal output from the input unit; A filter unit for passing only a frequency of a specific band of the amplified signal; A detector for detecting a filtered specific frequency; And a shaping unit for shaping the signal output from the detector.
A case in which a substrate is inherent, and sound waves generated from the musical instrument are input and diffused; And

Disposed on the substrate and set to pass only frequencies of different bands, thereby detecting a sound wave signal transmitted through the case, filtering the detected sound wave signal, and passing only a specific frequency to output a signal Including a conversion unit,

The signal converting unit includes a plurality of sensors, each sensor comprising: an input unit to which a sound wave signal is input; An amplifier for amplifying the digital signal output from the input unit; A filter unit for passing only a frequency of a specific band of the amplified signal; A detector for detecting a filtered specific frequency; Each of the shaping unit for shaping the signal output from the detector,

A plurality of keys are pivotally disposed in the frame by hinge pins, and each key is connected to a sensor of the signal converter so that only a corresponding key is driven by a specific frequency output from the signal converter. Responsive device.
A case in which a substrate is inherent, and sound waves generated from the musical instrument are input and diffused; And

Disposed on the substrate and set to pass only frequencies of different bands, thereby detecting a sound wave signal transmitted through the case, filtering the detected sound wave signal, and passing only a specific frequency to output a signal Including a conversion unit,

The signal converting unit includes a plurality of sensors, each sensor comprising: an input unit to which a sound wave signal is input; An amplifier for amplifying the digital signal output from the input unit; A filter unit for passing only a frequency of a specific band of the amplified signal; A detector for detecting a filtered specific frequency; Each of the shaping unit for shaping the signal output from the detector,

A keyboard unit disposed in a chair, the keyboard unit being connected to the signal converter to drive only a corresponding key by a specific frequency output from the signal converter; And

Resilient wrapping of the outside of the keyboard portion, the device responding to a sound comprising a flexible cover that can transmit the driving feeling of the keyboard in contact with the listener's back when the listener sits on the chair.
A microphone for receiving a song tone;

A case in which a substrate is embedded and the sound waves generated from the microphone are input and diffused; And

Disposed on the substrate and set to pass only frequencies of different bands, thereby detecting a sound wave signal transmitted through the case, filtering the detected sound wave signal, and passing only a specific frequency to output a signal Including a conversion unit,

The signal converting unit includes a plurality of sensors, each sensor comprising: an input unit to which a sound wave signal is input; An amplifier for amplifying the digital signal output from the input unit; A filter unit for passing only a frequency of a specific band of the amplified signal; A detector for detecting a filtered specific frequency; Each of the shaping unit for shaping the signal output from the detector,

It is composed of a plurality of keys arranged in a frame, the sound wave transmitted from the microphone connected to the signal conversion unit is converted to a predetermined frequency in the course of passing through the signal conversion unit is driven only by the specific frequency output by a specific frequency Keyboard portion; And

And a sound source generator that is in contact with only the corresponding key being driven and outputs a piano command sound corresponding to the key being touched.
The method according to any one of claims 1 to 4,

The filter part has a structure in which an integrated circuit and a differential circuit are combined by a resistor, a plurality of capacitors, and a diode.

The first and second cutoff frequencies are determined by the following formula,

And the target frequency f is fc1 < f < fc2.

Cutoff frequency of the first capacitor: fc1 = 1 / 2πRC1 -------- Equation 1

Cutoff frequency of the second capacitor: fc2 = 1 / 2πRC2 -------- Equation 2

(fc1: first blocking frequency, fc2: second blocking frequency, R: resistance

C1, C2: first and second capacitors)
The method of claim 2,

The keyboard portion is pivotally disposed on the frame by a hinge pin; A plurality of motors disposed on the frame to generate a vertical driving force, the plurality of motors being connected to the signal conversion unit to drive the keyboard by driving by signals; And a spring member disposed below the keyboard to mitigate an impact when the motor is raised and lowered.
The method of claim 2,

The keyboard portion is pivotally disposed on the upper portion of the frame by a hinge pin; A support bracket provided on the frame; An electromagnet disposed on the support bracket; A shaft mounted on the support bracket so as to move up and down and moving up and down the keyboard; A plate member mounted in the middle of the shaft to drive the keyboard by descending when the magnetic force is transmitted or blocked from the electromagnet; And a spring that elastically supports the plate member in the keyboard direction.
The method of claim 2,

And the frame, the signal converter, and the keyboard respond to sounds that can be fixed to the wall.
The method of claim 3,

The keyboard portion is pivotally disposed on the base by a hinge pin, the keyboard is covered with a flexible cover on the outside; A motor disposed on the base to generate forward and backward driving force, the motor being connected to the signal conversion unit to drive the keyboard forward and backward by driving by a signal; And a spring member disposed at the rear of the keyboard to mitigate the impact of the motor forward and backward.
The method of claim 3,

The keyboard portion is pivotally disposed on the base by a hinge pin, the keyboard is covered with a flexible cover on the outside; A motor disposed on the base to generate forward and backward driving force, the motor being driven by a signal by being connected to the signal converter; A spring member disposed between the motor shaft and the keyboard to mitigate an impact; And a support plate disposed at the tip of the shaft to resiliently support the spring member.
The method of claim 3,

The keyboard portion is pivotally disposed on the base by a hinge pin, the keyboard is covered with a flexible cover on the outside; A support bracket provided on the base; An electromagnet disposed at the rear of the support bracket to generate a magnetic force; A shaft provided in the support bracket and capable of advancing back and forth; A plate member provided at the rear end of the shaft and coupled to or separated from the electromagnet when a magnetic force is applied; And a plate member elastically supporting the plate member in the base direction.
The method according to claim 1 or 2,

The signal converter includes a first sound response unit connected to the keyboard of the left hand area when playing the piano;

And a second sound response unit having the same structure as the first sound response unit and connected to the keyboard of the right hand region when playing the piano.
The method according to any one of claims 1 to 4,

The signal converting unit is disposed inside the case and disposed on the substrate, and responding to the sound further comprises an output unit for transmitting the sound waves transmitted from the instrument into the case.
The method of claim 4, wherein

The keyboard portion is a base; A keyboard pivotally disposed on the base by a hinge pin; A motor disposed on the base and connected to one of the plurality of sensor units to drive the keyboard in a vertical direction by driving by a signal; And a spring member disposed below the keyboard to mitigate an impact when the motor is raised and lowered, wherein the motor is a lifting motor.
The method of claim 4, wherein

The keyboard portion is a base; A keyboard pivotally disposed on the base by a hinge pin; A support bracket disposed on the base; A drive shaft movably mounted to the support bracket; An electromagnet disposed above the support bracket to generate magnetic force when the power is supplied by the signal of the sensor unit; A plate member mounted on the drive shaft and coupled to or separated from the electromagnet by magnetic force; And a spring disposed between the electromagnet and the plate member to resiliently support the plate member in the base direction.
The method of claim 4, wherein

Each of the sound source generators is mounted on a keyboard, and each of the sound source generators stores commanded sounds corresponding to the corresponding keys, and when the stored sounds come into contact with the corresponding keys, the speakers provided in each of the plurality of piano sound source generators are provided. Responsive to the sound, characterized in that output through.