KR200462127Y1

KR200462127Y1 - Customized Multi-Channel Sound Recycling System

Info

Publication number: KR200462127Y1
Application number: KR2020120005086U
Authority: KR
Inventors: 이준영
Original assignee: 이준영
Priority date: 2012-06-15
Filing date: 2012-06-15
Publication date: 2012-08-30

Abstract

The present invention relates to a sound device having a plurality of channels, and in particular, a sound device having a plurality of channels, by converting an analog signal generated from a multi-channel sound source that generates at least one sound signal into a digital sound signal A sound source playback device for transmitting and performing a multi-processing function related to multichannel sound source playback; At least one wireless transmission module for transmitting a plurality of digital sound signals transmitted from the sound source reproducing apparatus; And at least one switch attached to the flat plate to receive a user command, and receiving a digital sound signal selected by the user among a plurality of digital sound signals transmitted through the wireless transmission module, analyzing the vibration amount of the flat plate Characterized in that the at least one speaker unit is given a unique ID to generate a.
Therefore, the present invention implements user-oriented sound source playback by allowing a user to select and independently listen to a plurality of sound sources transmitted by a wireless communication method in a single sound source playback device, thereby satisfying the multiplex processing requirements of sound sources. By vibrating the flat plate through the speaker unit to generate sound, the speaker unit can be reduced in size and space can be increased.

Description

Multi-Channel Sound Recycling System

The present invention relates to a sound device having multiple channels, and more particularly, to receive a plurality of sound sources transmitted through a sound reproducing apparatus by wireless transmission, and to reproduce various sound sources for each table according to a user's selection. It relates to a sound device equipped.

Acoustic control techniques using multiple sound sources have traditionally been developed to improve acoustic characteristics at several points. Recently, however, it has been developed to improve the acoustic characteristics for a specific space where a listener is located.

Conventional sound control methods using a plurality of sound sources merely change the time delay between the sound sources and their input size, and only change the direction of the sound sources by using a limited form of sound source arrangement. No consideration was given to the location or space in which the listener can be located.

In addition, the conventional sound reproducing system is composed of one sound source device and a speaker, so that multiple sound sources cannot be reproduced at the same time, and space utilization is low due to the size and weight of commercially available speakers, There is a problem that the wire is exposed.

Above all, the sound reproducing system applied to public facilities such as shopping malls, restaurants, pubs and coffee shops, or public facilities such as amusement parks can only listen to a single sound source sent by the management or owner through large speakers. There is a problem that the choice is limited.

Referring to Korean Patent Application Publication No. 10-2010-0083477 (published Jul. 22, 2010), a description is given of a technology of converting each mono signal of stereoscopic channels input from the outside into a stereo signal and outputting the same to a speaker of the corresponding channel. Doing.

In other words, the conventional sound reproducing system is a form in which users simultaneously listen to uniform music played by a provider of a sound source, and provides a provider-oriented interface of a sound source so that the user can listen to music that matches the user's taste, situation, and event. If you can not select directly, and the sound source that is played unilaterally matches the user's taste, it is fortunate, but for the user who does not, it can only be seen as noise.

Therefore, there is a need for a device that can select and listen to a sound source that satisfies the taste without causing damage to other users. This is emerging.

Accordingly, an object of the present invention is to implement a user-centered sound source playback by allowing a user to select and independently listen to a plurality of sound sources transmitted from one sound source playback apparatus, satisfying the multiplexing processing requirements of the sound source, By providing a sound by vibrating the flat plate through the speaker unit using a deformable material to provide a sound device having a number of channels that can reduce the size and space utilization of the speaker unit.

In order to achieve the above object of the present invention, a multi-channel acoustic device according to the present invention, converts the analog sound signal generated from the multi-channel sound source for generating at least one sound signal into a digital sound signal wireless A sound source playback device for transmitting and performing a multi-processing function related to multichannel sound source playback; At least one wireless transmission module for transmitting a plurality of digital sound signals transmitted from the sound source reproducing apparatus; And at least one switch attached to the flat plate to receive a user command, and receiving a digital sound signal selected by the user among a plurality of digital sound signals transmitted through the wireless transmission module, analyzing the vibration amount of the flat plate Characterized in that the at least one speaker unit is given a unique ID to generate a.

In this case, when performing the multi-processing function based on the PC, the sound source reproducing apparatus supports sound source data and power supply using a serial interface (PCI-E) for input / output, and at least one sound output terminal. In addition, it is characterized in that the built-in USB 2.0 controller for high-speed transfer of the sound source data input through the sound output terminal to the PC.

The sound source reproducing apparatus may further include a power supply stable circuit unit so that power is supplied to each sound output terminal.

On the other hand, the wireless transmission module is characterized in that the wireless communication by any one of the Bluetooth (Infrared Data Communication) or IrDA (Infrared Data Association) communication method.

The wireless transmission module may further include: a communication unit supporting a communication function between the sound source reproducing apparatus and a speaker unit, transmitting an audio signal by identifying an ID of the speaker unit, and controlling sound volume and overall control when the speaker is output. It characterized in that it comprises a control unit.

The speaker unit includes a power supply unit for supplying power, a magnetostrictive driver for generating a vibration by applying a predetermined preload to a magnetostrictive material whose external shape is changed according to the strength and direction of an external magnetic field, a user command input, A status display, an external stereo jack connection function, a speaker output function to a stereo phone or a headset, and a power amplifier module for power amplifying the sound signal to drive a speaker.

Here, the power amplifier module is characterized in that the wireless transmission module is built.

The power amplifier module may include a digital filter for removing noise of the acoustic signal.

The speaker unit may include an external case including a first case for assembling the power amplifier module, second and third cases for assembling the magnetostrictive driver, and a fourth case for assembling the power supply unit. The outer case is characterized in that the first to the fourth case is fitted in each of the sliding manner (hook) coupled.

The first case may include a power switch, a wireless transmission control switch, a charging connection terminal, and a direct audio input jack.

On the other hand, the speaker unit is attached by using a bracket for supporting the speaker unit, the suction plate fixed to the lower end of both sides of the bracket to be adsorbed on the plate, and the lever for instructing the fastening / release of the suction plate It is done.

In addition, the bracket and the suction plate is characterized in that designed using a professional engineer (Pro-Engineer, Pro-E).

And, the lower portion of the plate is characterized in that for installing a filter for reducing the progress of the negative in the vertical direction generated by the bending wave (Bending Wave).

Alternatively, a sound absorbing material may be attached to the upper circumference of the plate to absorb the bending wave propagation and the near sound in the horizontal direction.

The sound source reproducing apparatus may include a sound source dividing circuit and at least one sound device, and an auxiliary board for controlling sound and wireless transmission may be externally mounted.

At this time, the auxiliary board is characterized in that when using a wireless transmission method using Bluetooth to prevent duplication during Bluetooth pairing, to secure a communication distance.

According to the sound apparatus having multiple channels as described above, a user-centered sound source reproduction can be realized by allowing a user to independently listen to a plurality of sound sources transmitted by a wireless communication method in one sound source playback apparatus for each table. It satisfies the multiplexing requirements of the system and can compensate for the inconvenience and the disadvantages of the existing wired method.

In addition, the present invention can reduce the size of the speaker unit and increase the space utilization by vibrating the flat plate through the speaker unit using a magnetostrictive material, and increase the utilization of space, as well as tables, large windows, walls, floors, ceilings, etc. It can be widely used in cafes, defense industry, ultrasonic regenerators, advanced medical equipment, etc., which can create high added value.

In addition, the present invention is optimized for the fixed structure due to the case and bracket structure that can be easily attached and detached to eliminate the flow between the table and the speaker unit to prevent sound degradation, and sound between the table due to the sound shielding method using a filter or sound absorbing material It also has the effect of reducing interference and noise.

1 is a view schematically showing the configuration of a sound device having a plurality of channels according to an embodiment of the present invention,
2 is a view showing a signal flow state of a sound device having a plurality of channels according to an embodiment of the present invention,
3 is a block diagram showing the configuration of a speaker unit according to an embodiment of the present invention,
4 is a cross-sectional view showing the configuration of a magnetostrictive driver according to an embodiment of the present invention,
5 is a view showing the vibration modeling of the speaker unit according to an embodiment of the present invention,
6 is a board diagram showing a board frequency response of the transfer function applied to an embodiment of the present invention,
7 is a graph showing the displacement of the magnetostrictive material calculated according to the result of FIG. 6,
8 is a view showing a configuration of an outer case according to an embodiment of the present invention,
9 is a view showing a configuration of a bracket according to an embodiment of the present invention,
10 is a view showing a sound shielding state due to the installation of the filter and the sound absorbing material according to an embodiment of the present invention,
FIG. 11 is a block diagram illustrating a configuration of an acoustic device having several channels according to another embodiment of the present invention.

The present invention may be variously modified and have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail in the written description. It should be understood, however, that the appended claims are not intended to limit the invention to the particular embodiments, but to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention.

1 to FIG. 1, a sound device having multiple channels according to an embodiment of the present invention may include an analog sound signal generated from a multi-channel sound source 101 generating at least one sound signal and a digital sound signal. Converts to a wireless transmission and transmits a plurality of digital sound signals transmitted from the sound source playback device 100 and the speaker unit 300 to perform a multi-processing function related to the multi-channel sound source playback At least one radio transmission module 200 and at least one operation switch 336 attached to a flat plate 10 such as a table so that a user command is input, and through the radio transmission module 200. At least one of a plurality of digital sound signals transmitted by the user to receive a digital sound signal selected by the user to analyze the amount of vibration of the plate to generate a sound at least one or more It consists of a larger unit (300).

In this case, when the sound source reproducing apparatus 100 performs a multi-processing function on a PC basis, the sound source reproducing apparatus 100 is configured to add at least one sound output terminal in hardware to the speaker unit 300, and the sound source reproducing program is currently Since it is commercially available, even if there is no separate program, it can be implemented by using a commercial sound source playback program.

In addition, the sound source reproducing apparatus 100 supports sound source data and power supply by using a serial interface (PCI-E) for input / output among the terminals of the main board inside the PC, and adds the five sound output terminals. A USB 2.0 controller (not shown) for high speed transfer of sound source data input through the PC will be built in.

As such, the sound source reproducing apparatus 100 does not need to supply a separate power source because the board of the PCI-E type is built in, and the sound output terminal is configured as a USB terminal, and power is supplied to each sound output terminal. And a power supply stable circuit portion (not shown).

Since the voltage is required for the power supply stabilization circuit 3.3V and 5V, it is preferable to construct a 3.3V decompression circuit.

On the other hand, the wireless transmission module 200 performs a wireless communication in any one of the Bluetooth (Bluetooth) communication or IrDA (Infrared Data Association) communication method.

As illustrated in FIG. 3, the speaker unit 300 includes a preload of a predetermined size to a power supply unit 310 for supplying power and a magnetostrictive material 324 whose external shape changes according to the strength and direction of an external magnetic field. And a magnetostrictive drive 320 to generate vibration, a user command input, a status display, an external stereo jack connection function, a speaker output function to a stereo phone or a headset, and a power to amplify the sound signal to drive the speaker. Amplifier module 330.

In this case, the power supply unit 310 can output 5V and 3.3V, and can be charged using an adapter without separately configuring a charging circuit.

In addition, as shown in FIG. 4, the magnetostrictive driver 320 is mounted on a magnetostrictive material 324 whose external shape is changed according to the strength and direction of an external magnetic field, and externally to the magnetostrictive material 324. And a permanent magnet 325 capable of continuously providing a fixed magnetic field, and a coil 321 mounted inside the permanent magnet 325 to generate a magnetic field whose intensity and direction change according to the sound signal. do.

In addition, the magnetostrictive driver 320 surrounds the circumferential surfaces of the permanent magnets 325 and the coil 321 to absorb the synthetic magnetic field generated from the permanent magnets 325 and the coil 321 by the magnetostrictive material 324. A flux path housing 323 that concentrates on the magnetic field may be mounted to cover the exterior of the magnetostrictive material 324, the permanent magnet 325, the coil 321, and the flux path housing 323. The cover 327 is mounted, and the cover 327 has a structure that penetrates one side circumferential surface of the cover 327 and contacts one side of the magnetostrictive material 324. A push rod 322 is mounted which can move according to the displacement.

In addition, a preload spring 326 is installed between the cover 327 and the push rod 322 to apply a preload to the magnetostrictive material 324 through the push rod 322.

As such, design variables of the magnetic properties of the magnetostrictive driver 320 include an input current i, a coil turn number N, a size and strength of a permanent magnet, a magnetic field path, and the like. In order to determine such design variables, using a commercial program Finite Element Magnetics Method (FEMM), as shown in (a) and (b) of FIG. The structure of the magnetostrictive driver 320 is designed.

The structure in which the magnetostrictive driver 320 moves the flat plate 10 can be represented by a vibration model of one degree of freedom with a harmonic excitation, as shown in FIG. 5, and a mass-spring-damper. The maximum deformation of the magnetostrictive material 324 to obtain the plate amplitude at the reference frequency is obtained from the vibration model represented by the system.

Vibration input from the speaker unit 300 (

Is the displacement of the magnetostrictive material 324, and the output is the displacement of the plate 10 (

)to be. Since the amount of deformation of the magnetostrictive material 324 is related to the length of the material, the diameter of the magnetostrictive material 324 is assumed to be 5 mm, and the length of the magnetostrictive material is obtained. The flat plate 10 is a glass plate (50 × 50 ×) used for a general desk. 5mm) as a reference.

And, the weight of the speaker unit 300 (

) Effectively transmits the displacement generated by the magnetostrictive material 324 to the flat plate 10. Magnetostrictive material 324

,

Is modeled as a material with stiffness and damping.

Shall be.

In order to increase the analysis accuracy of the vibration modeling, the flat plate 10 is modeled as a structure including the resonant frequencies of the primary mode and the secondary mode, as shown in FIG. The variables are obtained by modal analysis of the glass plate using ANSYS, a finite element analysis program.

As shown in FIG. 5B, the equations of motion of the vibration model separated by the principle of superposition are summarized by Equation 1 below.

Laplace transform of Equation 1 described above

Output for

When expressed as a Transfer Function of Equation (2).

Here, A, B, C, and D are the same as in equation (3).

When the transfer function of Equation 2 is represented by a board diagram, it is as shown in FIG. 6, where

It is a graph obtained by changing the size of from 0.1kg to 1kg.

Referring to Figure 6, in the frequency band of 70 ~ 20000Hz it can be seen the effect of the resonant frequency of the three parts. This is a factor that affects the tone of the speaker. The first two resonant frequencies are influenced by the glass plate, and the second resonant frequency is affected by the material. That is, depending on the material of the plate, it has the characteristic of giving a distinctive sharp tone in the case of metal and a slightly heavy tone in the case of wooden board. And it can be seen that the greater the displacement transmission efficiency of the magnetostrictive drive 320 is increased from 0.1kg to 1kg.

According to these results, the output displacement of the magnetostrictive material to obtain 7.186 μm, the vibration displacement of the plate at the reference frequency

Calculation according to the change is as shown in FIG.

Considering the portability of the speaker unit 300, if the weight is 0.65 kg, the displacement of the magnetostrictive material at this time is 13.54 μm. When the strain of the magnetostrictive material is assumed to be 900 ppm stably, the length of the magnetostrictive material is set to 15 mm.

However, it is natural that the displacement and length of the magnetostrictive material 324 may vary whenever the weight of the speaker unit 300 changes.

On the other hand, the power amplifier module 330 may be a built-in wireless transmission module 200, the wireless transmission module 200 is to support the communication function between the sound source playback device 100 and the speaker unit 300 A communication unit (not shown) and an ID of the speaker unit 300 are identified to transmit a sound signal, and a controller (not shown) which performs sound volume control and overall control when the speaker is output.

The power amplifier module 330 may include a power switch 331, a low drop output (LDO) regulator 332 capable of adjusting an output voltage, a stereo phone jack 333, an IC chip 334 which is a D / A converter, It consists of an audio output 335 which is an analog audio mono output headset, a joystick type five-stage operation switch 336 to which a user command is input, and three LEDs 337 indicating a state, but removes noise of the acoustic signal. It may include a digital filter (not shown).

In this case, when considering the portability of the speaker unit 300, the power amplifier module 330 is designed as a mono amplifier having strengths in low power consumption.

As shown in FIG. 8, the speaker unit 300 includes two first cases 341 and the magnetostriction configured to assemble the power amplifier module 330 in which the wireless transmission module 200 is embedded. An outer case 340 including second and third cases 342 and 343 for assembling the driver 320 and a fourth case 344 for assembling the power supply unit 310. 341 is on the right side, the fourth case 344 is on the left side, the second case 342 is on the upper side of the center, and the third case 343 is located on the lower side of the center, respectively.

In addition, the outer case 340 is made of a MC nylon material, the first to fourth cases (341, 342, 343, 344) are each fitted in a sliding manner is hooked (hook). When the two first cases 341 are coupled with four bolts, and the second and third cases 342 and 343 are assembled using four L-wrench bolts, shown in FIG. 8B. As shown, the final speaker unit 300 is completed.

In order to increase user convenience, the first case 341 may include a power switch 331, an operation switch 336 for wireless transmission control, a charging connection terminal, and a direct audio input jack. Can be.

Meanwhile, as illustrated in FIG. 9, the speaker unit 300 includes a bracket 350 for supporting the speaker unit 300 so as to be easily attached to and detached from a flat plate 10 such as a table, and the bracket 350. Fixed on both sides of the lower end of the adsorption plate 351 is adsorbed on the plate 10 and the adsorption plate 351 is attached using the lever 352 for instructing the adsorption fastening / release, the bracket 350 and Adsorption plate 351 is designed using a professional engineer (Pro-Engineer, Pro-E).

Here, the professional engineer is a Windows-based three-dimensional CAD / CAM / CAE integrated support software developed by PTC in 1988, largely parametric (Parametric), nuclear power, and feature-based modeling ( Feature Based Modeling).

The parametric technique is the most basic function provided by a professional engineer.The technique is to create the shape by setting the parts necessary for the definition of the shape as parameters (parameters) and adjusting the variables according to the design intention while adjusting the variables. The nuclear plant association may document the model by creating parts, assemblies, and drawings.

In addition, the feature-based modeling is to create a part by gathering elements called features to create a part, that is, by adding or subtracting features one by one like stacking blocks using independent building blocks one at a time. .

Meanwhile, the adsorption plate 351 uses an adsorption plate used to attach the navigation, and the like, and the material of the bracket 350 uses MC nylon.

Therefore, the speaker unit 300 is designed to be integrally fixed to the two adsorption plate 351 to one bracket 350, so that there is little seam, so little noise is generated, and the lever 352 is easily opened and closed. Desorption is possible.

One of the characteristics of the vibrating speaker such as the speaker unit 300 is that the radiation angle of the sound is very large. Depending on the application, this large radiation angle is a problem to be solved in a multichannel sound reproduction system applied to a table to be used in public places.

When sound is generated by external energy in the flat plate 10, the surface of the flat plate 10 exhibits a phenomenon different from that of a general speaker, and has a structure in which the radiation angle of the sound is large by this movement.

This phenomenon is referred to as a bending wave effect. Referring to FIG. 10, the first mode is convex upward when the frequencies in the horizontal and vertical directions are the same. In the second mode, when the horizontal frequency is twice the vertical frequency, the third mode is similar to the second mode, and in the fourth mode, the horizontal and vertical frequencies are twice as high as the first mode. have.

The sound generated by the bending wave may distinguish a sound propagation direction in a vertical direction and a horizontal direction, respectively.

As such, when analyzing the negative traveling direction of the bending wave, it can be predicted that the negative traveling direction is relatively close to the vertical direction when damping the horizontal vibration of the planar surface.

As shown in (a) of FIG. 10, a urethane filter 360 capable of absorbing vibration is inserted around the rod 11 of the flat plate 10 such as a table, and the bending wave proceeds vertically. Reduce progression in the horizontal direction without disturbing.

As shown in FIG. 10B, the foamed sound absorbing material 370 is attached around the flat plate 10 to absorb the progress of the bending wave in the horizontal direction and the near sound.

Acoustic interference and noise between tables may be minimized through a sound shielding method using the filter 360 or the sound absorbing material 370.

Meanwhile, in another embodiment of the present invention, the PC-based sound source reproducing apparatus 100 includes a sound source dividing circuit 410 and at least one sound device 420 for dividing a multi-channel sound source on a PCI board, and includes a PCI Apart from the board, an auxiliary board 430 for controlling sound and wireless transmission may be externally mounted.

In this case, the auxiliary board 430 prevents duplication during Bluetooth pairing when using a wireless transmission method using Bluetooth, and the auxiliary board 430 is installed in the open space outside the sound source reproducing apparatus 100 and is present in an open space. Therefore, it is possible to secure a sufficient communication distance for the Bluetooth distance and the communication disconnection during wireless transmission using Bluetooth.

Hereinafter, the operation of a sound device having several channels according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

1 to 11, a sound device having various channels according to an embodiment of the present invention includes a sound source playback apparatus 100 for transmitting a plurality of sound sources and a sound source transmitted from the sound source playback apparatus 100. By easily attaching or detaching the speaker unit 300 that can receive and reproduce sound to the top or bottom of the flat plate 10 such as a table, the user can select and listen to a desired sound source.

In this case, a wireless transmission module 200 supporting a wireless communication function between the sound source reproducing apparatus 100 and the speaker unit 300 may be built in the speaker unit 300 and supports a wireless communication method using Bluetooth. do.

The wireless transmission module 200 can identify the ID of each speaker unit 300 to reduce the collision and error between a plurality of sound signals.

In addition, since the speaker unit 300 generates a sound by vibrating the flat plate 10 such as a table by applying a flat plate vibration technology, the space utilization is increased, and the size and size of the speaker unit 300 are widened. .

In addition, the speaker unit 300 may be firmly attached to a table by using a bracket 350 having two suction plates 351 in a state where each component is assembled to the outer case 340, and the lever 352 may be attached to the speaker unit 300. Through the opening and closing operation, the suction plate 351 may be separated and detached from the table.

As described above, the present invention is capable of controlling at least five sound sources, and is compatible with heterogeneous multimedia wireless communication devices such as PCs and smartphones, and the wireless transmission distance using Bluetooth depends on the number of speaker units 300. It varies from 4m to 11.2m at the minimum.

In addition, in the case of a table made of a wooden plate, when the speaker unit 300 is mounted, the sensitivity may be reproduced at 90 dB and an audible frequency band, and the bandwidth may be output as 0 to 19 kHz.

In addition, the sound shielding efficiency using the filter 360 and the sound absorbing material 370 is about 73dB, and has a sustaining time of at least 48 hours due to the outer case 340 having an easy detachable structure when the surface is smooth.

In addition, the present invention can be applied to a variety of smart TV or multimedia field in the future as a plurality of users in the same space can select and listen to the desired sound source according to their taste, situation, event.

Although described with reference to the embodiments above, those skilled in the art that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention described in the utility model claims below. I can understand.

The present invention relates to a sound device having a plurality of channels, and more particularly, by receiving a plurality of sound sources transmitted through a sound source playback apparatus by wireless transmission, and applying the vibration principle of the plate to different sound sources for each table according to the user's selection A sound device with multiple channels that can be played back.

10: Reputation 11: Load
100: sound source playback device 200: wireless transmission module
300: speaker unit 310: power supply
320: magnetostrictive driver 330: power amplifier module
340: outer case 350: bracket
351: suction plate 352: lever
360: filter 370: sound absorbing material
410: sound source division circuit 420: sound device
430: Auxiliary Board

Claims

A sound source reproducing apparatus which converts an analog signal sound generated from a multi-channel sound source generating at least one sound signal into a digital sound signal and wirelessly transmits the signal, and performs a multi-processing function related to multi-channel sound source reproduction;
At least one wireless transmission module for transmitting a plurality of digital sound signals transmitted from the sound source reproducing apparatus; And
At least one switch attached to the flat plate so as to input a user command, and receives a digital sound signal selected by the user among a plurality of digital sound signals transmitted through the wireless transmission module to analyze the vibration amount of the flat plate to perform sound At least one speaker unit assigned a unique ID to occur,
The sound source reproducing apparatus supports sound source data and power supply by using a serial interface (PCI-E) for input / output when performing a multi-processing function based on a PC, and adds at least one sound output terminal. And a USB 2.0 controller for high speed transfer of sound source data input through the sound output terminal to a PC.
The sound source reproducing apparatus further includes a power supply stable circuit unit so that power is supplied to each sound output terminal,
The wireless transmission module performs wireless communication by any one of a Bluetooth communication or an Infrared Data Association (IrDA) communication method.
The wireless transmission module may include a communication unit supporting a communication function between the sound source reproducing apparatus and a speaker unit, a control unit for identifying an ID of the speaker unit to transmit an audio signal, and controlling volume and overall control when a speaker is output. Include,
The speaker unit,
A power supply unit for supplying power,
A magnetostrictive driver for generating vibration by applying a predetermined preload to a magnetostrictive material whose external shape changes according to the strength and direction of the external magnetic field;
User command input, status display, external stereo jack connection function, speaker output function to a stereo phone or headset, and a power amplifier module for power amplifying the sound signal to drive the speaker,
The power amplifier module has a built-in wireless transmission module,
The power amplifier module includes a digital filter for removing noise of the acoustic signal,
The speaker unit includes an external case including a first case for assembling the power amplifier module, second and third cases for assembling the magnetostrictive driver, and a fourth case for assembling the power supply unit.
The first case is provided with a power switch, a control switch for wireless transmission control, a charging connection terminal, a direct audio input jack (Direct audio input jack),
The speaker unit has a structure supporting the speaker unit, the suction plate fixed to the lower end of the both sides of the bracket is attached to the plate by using a lever for instructing the adsorption fastening / release of the suction plate,
The sound source reproducing apparatus includes a sound source dividing circuit and at least one sound device, and an auxiliary board for controlling sound and wireless transmission is externally mounted.
The auxiliary board is a sound device having a plurality of channels, characterized in that when using a wireless transmission method using Bluetooth to prevent duplication during Bluetooth pairing, to secure a communication distance.

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