Underwater acoustic projector

Abstract

The present disclosure proposes a sound wave output device. Specifically, the sound wave output device of the present disclosure comprises a signal synthesis unit that synthesizes an environmental signal generated by control signals and a communication signal to generate a synthesized signal, a signal generation unit that filters the synthesized signal to generate an electrical signal for sound wave output, and a sonar transducer that outputs sound waves into water using the electrical signal.

Description

Technology Field

[0001] The present disclosure relates to a sound wave output device. Background Technology

[0002] Due to the significant attenuation of electromagnetic waves in underwater environments, underwater communication is primarily carried out using sound waves. Such underwater acoustic communication is utilized in various fields, including submarines, unmanned underwater vehicles (AUVs), underwater sensor networks, seabed exploration, and military and security communications. A typical underwater acoustic communication system features a structure in which a transmitter radiates a modulated acoustic signal into the water, and a receiver demodulates it to obtain information. While sound waves can propagate over relatively long distances through the underwater medium, there is a problem in that they can be easily detected by nearby third parties or unauthorized receiving devices due to their propagation characteristics.

[0003] In particular, for underwater communications used for military or security purposes or for the transmission of data containing sensitive information, the exposure of communication signals to the outside can lead to serious security threats such as eavesdropping, location tracking, and communication jamming. For this reason, underwater acoustic communication requires technology that ensures the secrecy of the physical acoustic signals themselves, in addition to simple data encryption. Prior art literature

[0004] Published Patent Application No. 10-1997-0048618 The problem to be solved

[0005] The present disclosure proposes a sound wave output device that improves acoustic stealth in underwater communication to prevent the theft of communication data from the outside.

[0006] The present disclosure proposes a sound wave output device that synthesizes communication data with ambient sound and outputs it.

[0007] The present disclosure proposes a sound wave output device that improves acoustic stealth during underwater communication by electrically synthesizing communication data at a relatively low voltage and ambient sound at a high voltage.

[0008] The technical problems to be solved in this disclosure are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which this invention belongs from the description below. means of solving the problem

[0009] The present disclosure proposes a sound wave output device.

[0010] The sound wave output device of the present disclosure includes a signal synthesis unit that synthesizes an environmental signal generated by control signals and a communication signal to generate a synthesized signal, a signal generation unit that filters the synthesized signal to generate an electrical signal for sound wave output, and a sonar transducer that outputs sound waves into water using the electrical signal.

[0011] In addition, in the apparatus of the present disclosure, the signal synthesizing unit comprises first to N H-bridge inverters, and the first output terminal of the K-th H-bridge inverter is connected to the second output terminal of the K+1-th H-bridge inverter, wherein K is an integer greater than or equal to 1 and less than N (1= <K<N)일 수 있다.

[0012] In addition, in the apparatus of the present disclosure, the first to Mth H-bridge inverters among the N H-bridge inverters generate the environment signal by control signals, and the M+1th to Nth H-bridge inverters among the N H-bridge inverters generate the communication signal by control signals, wherein M may be an integer smaller than a previously defined N.

[0013] Additionally, in the device of the present disclosure, the signal generating unit includes an inductor and a capacitor, one end of the inductor is connected to one end of the capacitor and to a first input terminal of the sonar transducer, the other end of the inductor is connected to a second output terminal of a first H-bridge inverter of the signal synthesizing unit, and the other end of the capacitor may be connected to a first output terminal of the Nth H-bridge inverter and to a second input terminal of the sonar transducer.

[0014] In addition, in the device of the present disclosure, the control signals may be input through the control terminals of the first to fourth transistors included in each H-bridge inverter.

[0015] In addition, the device of the present disclosure may further include an impedance matching unit for impedance matching between the signal generating unit side and the sonar transducer side.

[0016] Additionally, a sound wave output device according to another embodiment of the present disclosure includes an environment signal generating unit that generates an environment signal by first control signals, a communication signal generating unit that generates a communication signal that is combined with the environment signal by second control signals, a signal combining unit that generates an electrical signal for sound wave output by filtering and combining the environment signal and the communication signal, and a sonar transducer that outputs sound waves into water using the electrical signal.

[0017] In addition, in the device of the present disclosure, the environment signal generating unit may include one H-bridge inverter, and the communication signal generating unit may include one H-bridge inverter.

[0018] Additionally, in the device of the present disclosure, the signal synthesis unit comprises first and second inductors and first and second capacitors, one end of the first inductor is connected to one end of the first capacitor and to the first input terminal of the sonar transducer, the other end of the first inductor is connected to the second output terminal of the H-bridge inverter of the environment signal generation unit, the other end of the first capacitor is connected to the first output terminal of the H-bridge inverter of the environment signal generation unit, one end of the second inductor is connected to one end of the second capacitor and to the other end of the first capacitor, the other end of the second inductor is connected to the second output terminal of the H-bridge inverter of the communication signal generation unit, and the other end of the second capacitor may be connected to the first output terminal of the H-bridge inverter of the communication signal generation unit and to the second input terminal of the sonar transducer.

[0019] Additionally, in the device of the present disclosure, the environment signal generating unit comprises P H-bridge inverters, and the first output terminal of the X-th H-bridge inverter is connected to the second output terminal of the X+1-th H-bridge inverter, wherein P is an integer greater than or equal to 2 and X is an integer greater than or equal to 1 and less than P (1= <X<P)일 수 있다.

[0020] Additionally, in the device of the present disclosure, the communication signal generating unit comprises Q H-bridge inverters, and the first output terminal of the Y-th H-bridge inverter is connected to the second output terminal of the Y+1-th H-bridge inverter, wherein Q is an integer greater than or equal to 2 and Y is an integer greater than or equal to 1 and less than Q (1= <Y<Q)일 수 있다.

[0021] Additionally, in the device of the present disclosure, the signal synthesis unit comprises first and second inductors and first and second capacitors, one end of the first inductor is connected to one end of the first capacitor and to the first input terminal of the sonar transducer, the other end of the first inductor is connected to the second output terminal of the first H-bridge inverter of the environment signal generation unit, the other end of the first capacitor is connected to the first output terminal of the P H-bridge inverter of the environment signal generation unit, one end of the second inductor is connected to one end of the second capacitor and to the other end of the first capacitor, the other end of the second inductor is connected to the second output terminal of the first H-bridge inverter of the communication signal generation unit, and the other end of the second capacitor may be connected to the first output terminal of the Q H-bridge inverter of the communication signal generation unit and to the second input terminal of the sonar transducer.

[0022] In addition, in the device of the present disclosure, the first and second control signals may be input through the control terminals of the first to fourth transistors included in each H-bridge inverter.

[0023] In addition, the device of the present disclosure may further include an impedance matching unit for impedance matching between the signal synthesis unit side and the sonar transducer side. Effects of the invention

[0024] According to the present disclosure, there is an effect of providing a sound wave output device that improves acoustic stealth in underwater communication and prevents the theft of communication data from the outside.

[0025] According to the present disclosure, there is an effect of providing a sound wave output device that synthesizes communication data with ambient sound and outputs it.

[0026] According to the present disclosure, there is an effect of providing a sound wave output device that improves acoustic security during underwater communication by electrically synthesizing communication data at a relatively low voltage and environmental sound at a high voltage.

[0027] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs from the description below. Brief explanation of the drawing

[0028] The accompanying drawings, which are included as part of the detailed description to aid in understanding the present disclosure, provide embodiments of the present disclosure and explain the technical features of the present disclosure together with the detailed description. FIG. 1 illustrates a block diagram of a sound wave output device of the present disclosure. Figure 2 illustrates a circuit diagram of the sound wave output device of Figure 1. FIG. 3 illustrates a block diagram of a sound wave output device according to another embodiment of the present disclosure. Figure 4 illustrates a circuit diagram of the sound wave output device of Figure 3. Specific details for implementing the invention

[0029] Hereinafter, preferred embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. The detailed description disclosed below, together with the accompanying drawings, is intended to describe exemplary embodiments of the present disclosure and is not intended to represent the only embodiment in which the present disclosure may be practiced. The following detailed description includes specific details to provide a complete understanding of the present disclosure. However, those skilled in the art will know that the present disclosure may be practiced without such specific details.

[0030] In some cases, to avoid obscuring the concept of the present disclosure, known structures and devices may be omitted or illustrated in the form of block diagrams focusing on the core functions of each structure and device. In the present disclosure, ' / ' means 'and', 'or', or 'and / or' depending on the context.

[0031] FIG. 1 illustrates a block diagram of a sound wave output device of the present disclosure.

[0032] Referring to FIG. 1, the sound wave output device (100) includes at least one of a signal synthesis unit (110), a signal generation unit (120), and / or a sonar transducer (130). For example, the present disclosure may be implemented as a signal generation device including a signal synthesis unit (110) and a signal generation unit (120).

[0033] The signal synthesis unit (110) can synthesize an environment signal (generated by) control signals and a communication signal to generate a composite signal. The composite signal may be a signal in which the environment signal and the communication signal are synthesized. In the present disclosure, the control signal, the composite signal, and / or the electrical signal may refer to the magnitude / phase of voltage / current / power, etc. and / or changes thereof, etc., or a corresponding signal. For example, the composite signal may be a voltage magnitude / value in which the voltage magnitude / value of the environment signal and the voltage magnitude / value of the communication signal are summed. For example, the environment signal may be a voltage and / or voltage magnitude between the second output terminal of the first H-bridge inverter (111) of FIG. 2 and the first output terminal of the M H-bridge inverter (112). The communication signal may be a voltage and / or voltage magnitude between the second output terminal of the M+1 H-bridge inverter (113) of FIG. 2 and the first output terminal of the N H-bridge inverter (114).

[0034] The control signals may include first control signals for generating an environment signal and second control signals for generating a communication signal. In the case of the example of FIG. 2, the first control signals may be input to the control terminals (e.g., gates) of transistors included in the first H-bridge inverter (111) to the Mth H-bridge inverter (112) among the N H-bridge inverters described later, and the second control signals may be input to the control terminals (e.g., gates) of transistors included in the M+1st H-bridge inverter (113) to the Nth H-bridge inverter (114) among the N H-bridge inverters described later. Accordingly, the first to Mth H-bridge inverters may generate an environment signal, and the M+1st to Nth H-bridge inverters may generate a communication signal.

[0035] The first control signal is a control signal for generating an environmental signal and can vary by region, water depth, and purpose of use. The first control signal can be generated using environmental information. For example, the environmental information (or environmental information DB) may contain multiple control signals corresponding to collection status / environment, such as location and water depth. The first control signal can be generated using the environmental information (or environmental information DB) according to a predefined method and / or rule. For example, the first control signal may be obtained as the one corresponding to the current environment / state among the multiple control signals of the environmental information. For example, the first control signals may include a number of transistor input signals equal to the number of transistors included in the H-bridge inverters.

[0036] The second control signal may be a control signal for generating a communication signal corresponding to 0 and 1 according to a communication protocol composed of 0 and 1. For example, the method of representing 0 and 1 may be various methods, such as a change in the magnitude (or magnitude) of the output voltage, a change in the frequency of the output voltage, or a change in the phase of the output voltage. For example, the communication bit may be generated using a communication protocol and / or, the communication signal may be generated by converting the communication bit into an electrical signal and / or by generating it. For example, conversion may mean conversion to a frequency corresponding to the communication bit, conversion to a magnitude, and / or conversion to a phase difference.

[0037] For example, the second control signals may include a number of transistor input signals equal to the number of transistors included in the H-bridge inverters.

[0038] The signal generation unit (120) can generate an electrical signal for sound wave output by filtering the composite signal. The signal generation unit (120) can improve the output quality by generating an electrical signal by removing noise, etc., from the composite signal.

[0039] The sonar transducer (130) can output sound waves underwater using or receiving an electrical signal. And / or, the sound wave output device (100) of the present disclosure may not only output sound waves but also receive sound waves and separate environmental signals and communication signals by performing signal processing in the reverse direction.

[0040] Figure 2 illustrates a circuit diagram of the sound wave output device of Figure 1.

[0041] Referring to FIG. 2, the signal synthesis unit (110) may include a first H-bridge inverter (111) to a Nth H-bridge inverter (114). Here, N may be a predefined integer of 2 or more. In the present disclosure, the H-bridge inverter may be implemented by replacing it with various devices, such as power amplifiers and inverters, that receive control signals and generate and / or synthesize environment signals and communication signals.

[0042] Each of the first to Nth H-bridge inverters (111 to 114) may include an output terminal. The output terminal may include a first output terminal and a second output terminal. For example, among the N H-bridge inverters, the first output terminal of the Kth H-bridge inverter may be connected to the second output terminal of the K+1st H-bridge inverter. Here, K is a positive integer greater than or equal to 1 and less than N (1= <K<N)일 수 있다. 그리고 / 또는, 제1 H-브리지 인버터(111)의 제2 출력단자는 신호 생성부의 인덕터(Lf)의 타단에 연결될 수 있다. 그리고 / 또는, 제N H-브리지 인버터(114)의 제1 출력단자는 신호 생성부의 캐패시터(Cf)의 타단 및 / 또는 소나 트랜스듀서(130)의 제2 입력단자에 연결될 수 있다.

[0043] For example, among N H-bridge inverters, the first H-bridge inverter (111) to the Mth H-bridge inverter (112, M=1 when N=2) can generate an environment signal by control signals. And / or, among N H-bridge inverters, the M+1st H-bridge inverter (113) to the Nth H-bridge inverter (114) can generate a communication signal by control signals. Here, M may be a positive integer smaller than a previously defined N. For example, N H-bridge inverters may include at least one H-bridge inverter that generates an environment signal and at least one H-bridge inverter that generates a communication signal (i.e., M=1 when N=2). For example, when N=2 and M=1, the first H-bridge inverter (111) can generate an environment signal and the second H-bridge inverter (114) can generate a communication signal.

[0044] In FIGS. 3 and 4, the transistor is depicted as a Metal Oxide Semiconductor Field Effect Transistor (MOSFET) (or Enhancement N-Channel MOSFET), but since this is merely an example, the transistor may be implemented as a Bi-polar Junction Transistor (BJT), Junction Transistor (JT), Field Effect Transistor (FET), or Insulated Gate Bipolar Transistor (IGBT), etc.

[0045] Each of the first to Nth H-bridge inverters (111 to 114) may include at least one of the first to fourth transistors (T1, T2, T3, T4) and / or a capacitor (C). For example, the first terminal (e.g., drain) of the first transistor (T1) of any one H-bridge inverter may be connected to the first terminal of the third transistor (T3) and / or the positive terminal of the capacitor (C). And / or, the second terminal (e.g., source) of the first transistor (T1) may be connected to the first terminal of the second transistor (T2). And / or, the second terminal of the second transistor (T2) may be connected to the second terminal of the fourth transistor (T4) and / or the negative terminal of the capacitor (C). And / or, the second terminal of the third transistor (T3) may be connected to the first terminal of the fourth transistor (T4). Here, the first output terminal of the H-bridge inverter is the second terminal of the third transistor (T3) and / or the first terminal of the fourth transistor (T4), and / or, the second output terminal of the H-bridge inverter may be the second terminal of the first transistor (T1) and / or the first terminal of the second transistor (T2).

[0046] For example, the composite signal may be the voltage and / or voltage magnitude of the second output terminal of the first H-bridge inverter (111) and the first output terminal of the Nth H-bridge inverter (114). For example, the same or different voltage may be applied to each of the N capacitors to improve voltage precision, increase the magnitude of the output voltage, etc. And / or, control signals may be input through the control terminals (e.g., gates) of the first to fourth transistors included in each H-bridge inverter.

[0047] In Figures 2 and 3, diodes are connected to the MOSFETs, but this represents only the parasitic body diodes of the MOSFETs and does not mean that separate diodes are connected.

[0048] The signal generation unit (120) may include an inductor and a capacitor. For example, one end of the inductor (Lf) may be connected to one end of the capacitor (Cf) and / or to the first input terminal of the sonar transducer (130). And / or, the other end of the inductor (Lf) may be connected to the second output terminal of the first H-bridge inverter (111) of the signal synthesis unit (110). And / or, the other end of the capacitor (Cf) may be connected to the first output terminal of the Nth H-bridge inverter (114) and / or to the second input terminal of the sonar transducer (130).

[0049] And / or, the sound wave output device (100) may further include an impedance matching unit (not shown) for impedance matching between the signal generation unit (120) side and the sonar transducer (130) side. The impedance matching unit may be used for purposes such as minimizing reactive power, voltage step-up / step-down, and electrical insulation. For example, the impedance matching unit may be a transformer including a primary winding and a secondary winding. The transformer may be connected / added between the signal generation unit (120) and the sonar transducer (130) in the sound wave output device (100) of FIG. 2. Both ends of the primary winding of the transformer may be connected to both ends of the capacitor (Cf) of the signal generation unit (120) and / or, both ends of the secondary winding may be connected to both ends of the sonar transducer (130). In this case, the first output terminal of the N H-bridge inverter (114) can be connected to the other end of the capacitor (Cf) and / or one end or the other end of the primary winding of the transformer.

[0050] FIG. 3 illustrates a block diagram of a sound wave output device according to another embodiment of the present disclosure.

[0051] Referring to FIG. 3, the sound wave output device (200) includes at least one of an environment signal generator (210), a communication signal generator (220), a signal synthesizer (230), and / or a sonar transducer (240). For example, the present disclosure may be implemented as a signal generator including an environment signal generator (210), a communication signal generator (220), and a signal synthesizer (230).

[0052] The environment signal generation unit (210) can generate an environment signal by first control signals. For example, the first control signals may be control signals for generating an environment signal. The communication signal generation unit (220) can generate a communication signal that is combined with the environment signal by second control signals. For example, the second control signals may be control signals for generating a communication signal. For example, the environment signal may be the voltage and / or voltage magnitude of the second output terminal of the first H-bridge inverter (211) of the environment signal generation unit (210) and the first output terminal of the P H-bridge inverter (212), and the communication signal may be the voltage and / or voltage magnitude of the second output terminal of the first H-bridge inverter (221) of the communication signal generation unit (220) and the first output terminal of the Q H-bridge inverter (222).

[0053] The signal synthesis unit (230) can generate an electrical signal for sound wave output by filtering the environmental signal and the communication signal, respectively, and / or synthesizing them. For example, the electrical signal may be the voltage and / or voltage magnitude of one end of the first inductor (L1) and the other end of the second capacitor (C2).

[0054] The sonar transducer (240) can output sound waves into the water using an electrical signal.

[0055] Figure 4 illustrates a circuit diagram of the sound wave output device of Figure 3.

[0056] Referring to FIG. 4, the environment signal generation unit (210) may include P H-bridge inverters (211 to 212). When P is 2 or greater, the first output terminal of the Xth H-bridge inverter among the P H-bridge inverters (211 to 212) may be connected to the second output terminal of the X+1th H-bridge inverter. Here, X is a positive integer greater than or equal to 1 and less than P (1= <X<P)일 수 있다.

[0057] The second output terminal of the first H-bridge inverter (211) among the P H-bridge inverters (211 to 212) may be connected to the other end of the first inductor (L1) of the signal synthesis unit (230). The first output terminal of the P H-bridge inverter (212, 211 when P=1) among the P H-bridge inverters (211 to 212) may be connected to the other end of the first capacitor (C1), one end of the second inductor (L2) and / or one end of the second capacitor (C2). For example, the P H-bridge inverters (211 to 212) may generate an environment signal by the first control signals.

[0058] The communication signal generation unit (220) may include Q H-bridge inverters (221 to 222). If Q is 2 or greater, the first output terminal of the Y-th H-bridge inverter among the Q H-bridge inverters (221 to 222) may be connected to the second output terminal of the Y+1-th H-bridge inverter. Here, Y is a positive integer greater than or equal to 1 and less than Q (1= <Y<Q)일 수 있다.

[0059] The second output terminal of the first H-bridge inverter (221) among the Q H-bridge inverters (221-222) may be connected to the other end of the second inductor (L2) of the signal synthesis unit (230). The first output terminal of the Q H-bridge inverter (222, 221 when Q=1) among the Q H-bridge inverters (221-222) may be connected to the other end of the second capacitor (C2) and / or the second input terminal of the sonar transducer (240). For example, the Q H-bridge inverters (221-222) may generate a communication signal by the second control signals.

[0060] Each of the P H-bridge inverters (211–212) and each of the Q H-bridge inverters (221–222) may include first to fourth transistors (T1, T2, T3, T4) and a capacitor (C). First control signals may be input through the control terminals (e.g., gates) of the first to fourth transistors included in each of the P H-bridge inverters (211–212). Second control signals may be input through the control terminals (e.g., gates) of the first to fourth transistors included in each of the Q H-bridge inverters (221–222).

[0061] Other descriptions of the transistor and H-bridge inverter are the same as those of the transistor and H-bridge inverter of the sound wave output device (100) described with reference to FIGS. 1 and 2, so a detailed description is omitted.

[0062] The signal synthesis unit (230) may include first and second inductors (L1, L2) and first and second capacitors (C1, C2). One end of the first inductor (L1) may be connected to one end of the first capacitor (C1) and / or to the first input terminal of the sonar transducer (240). And / or, the other end of the first inductor (L1) may be connected to the second output terminal of the first H-bridge inverter (211) of the environment signal generation unit (210). And / or, the other end of the first capacitor (C1) may be connected to the first output terminal of the P H-bridge inverter (212, 211 when P=1) of the environment signal generation unit (210), one end of the second inductor (L2), and / or one end of the second capacitor (C2).

[0063] And / or, one end of the second inductor (L2) may be connected to one end of the second capacitor (C2), the other end of the first capacitor (C1), and / or the first output terminal of the P H-bridge inverter (212). And / or, the other end of the second inductor (L2) may be connected to the second output terminal of the first H-bridge inverter (221) of the communication signal generator (220). And / or, the other end of the second capacitor (C2) may be connected to the first output terminal of the Q H-bridge inverter (222, 221 when Q=1) of the communication signal generator (220) and / or the second input terminal of the sonar transducer (240).

[0064] And / or, the sound wave output device (200) may further include an impedance matching unit (not shown) for impedance matching between the signal synthesis unit (230) side and the sonar transducer (240) side. For example, the impedance matching unit may be a transformer including a primary winding and a secondary winding. The transformer may be connected / added between the signal synthesis unit (230) and the sonar transducer (240) in the sound wave output device (200) of FIG. 4. The first terminal of the primary winding of the transformer may be connected to one end of the first inductor (L1) and / or one end of the first capacitor (C1), and / or, the second terminal of the primary winding of the transformer may be connected to the other end of the second capacitor (C2) and / or the first output terminal of the Q H-bridge inverter (222, 221 when Q=1). And / or, both ends of the transformer secondary winding can be connected to both ends of the sonar transducer (240).

[0065] In addition, the operation / structure / description of the sound wave output device (200) described with reference to FIGS. 3 and 4 is the same as the operation / structure / description of the sound wave output device (100) described with reference to FIGS. 1 and 2, so a detailed description is omitted.

[0066] The embodiments described above are combinations of the components and features of the present disclosure in a specific form. Each component or feature should be considered optional unless otherwise explicitly stated. Each component or feature may be implemented in a form not combined with other components or features. Additionally, it is possible to construct embodiments of the present invention by combining some components and / or features. The order of operations described in the embodiments of the present invention may be changed. Some components or features of one embodiment may be included in another embodiment, or may be replaced with corresponding components or features of another embodiment. It is obvious that embodiments may be constructed by combining claims that do not have an explicit citation relationship in the claims, or that they may be included as new claims by amendment after filing.

[0067] Embodiments according to the present disclosure may be implemented by various means, e.g., hardware, firmware, software, or a combination thereof. In the case of implementation by hardware, an embodiment of the present invention may be implemented by one or more ASICs (application specific integrated circuits), DSPs (digital signal processors), DSPDs (digital signal processing devices), PLDs (programmable logic devices), FPGAs (field programmable gate arrays), processors, controllers, microcontrollers, microprocessors, etc.

[0068] In the case of implementation by firmware or software, an embodiment of the present invention may be implemented in the form of a module, procedure, function, etc., that performs the functions or operations described above. The software code may be stored in memory and executed by a processor. The memory may be located inside or outside the processor and may exchange data with the processor by various known means.

[0069] It is obvious to those skilled in the art that the present disclosure may be embodied in other specific forms without departing from the essential features of the present disclosure. Accordingly, the detailed description set forth above should not be interpreted restrictively in all respects and should be considered exemplary. The scope of the present disclosure shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present disclosure are included within the scope of the present disclosure.

Claims

Claim 1 A signal synthesis unit that generates a synthesized signal by synthesizing an environmental signal generated by a first control signal based on environmental information and a communication signal generated by a second control signal; a signal generation unit that generates an electrical signal for sound wave output by filtering the synthesized signal; and a sonar transducer that outputs sound waves underwater using the electrical signal; wherein the signal synthesis unit includes first to N H-bridge inverters, and the first output terminal of the K-th H-bridge inverter is connected to the second output terminal of the K+1-th H-bridge inverter, where K is an integer greater than or equal to 1 and less than N (1= <K<N)이며,N개의 H-브리지 인버터 중 제1 내지 제M H-브리지 인버터는 상기 제1 제어 신호에 의해 상기 환경 신호를 생성하고,상기 N개의 H-브리지 인버터 중 제M+1 내지 제N H-브리지 인버터는 상기 제 2 제어 신호에 의해 상기 통신 신호를 생성하며, 여기서, M은 기 정의된 N 보다 작은 정수인음파 출력 장치. Claim 2 delete Claim 3 delete Claim 4 A sound wave output device according to claim 1, wherein the signal generating unit includes an inductor and a capacitor, one end of the inductor is connected to one end of the capacitor and to a first input terminal of the sonar transducer, the other end of the inductor is connected to a second output terminal of a first H-bridge inverter of the signal synthesizing unit, and the other end of the capacitor is connected to a first output terminal of the Nth H-bridge inverter and to a second input terminal of the sonar transducer. Claim 5 In claim 1, the control signals are input to an acoustic output device through the control terminals of the first to fourth transistors included in each H-bridge inverter. Claim 6 A sound wave output device according to claim 1, further comprising an impedance matching unit for impedance matching between the signal generation unit side and the sonar transducer side. Claim 7 An environment signal generation unit that generates an environment signal by first control signals based on environment information; a communication signal generation unit that generates a communication signal that is combined with the environment signal by second control signals; and a signal synthesis unit that generates an electrical signal for sound wave output by filtering the environment signal and the communication signal and then synthesizing them. and a sonar transducer that outputs sound waves underwater using the above electrical signal; wherein the environmental signal generating unit includes one H-bridge inverter, the communication signal generating unit includes one H-bridge inverter, and the signal synthesizing unit includes first and second inductors and first and second capacitors, one end of the first inductor is connected to one end of the first capacitor and the first input terminal of the sonar transducer, the other end of the first inductor is connected to the second output terminal of the H-bridge inverter of the environmental signal generating unit, the other end of the first capacitor is connected to the first output terminal of the H-bridge inverter of the environmental signal generating unit, one end of the second inductor is connected to one end of the second capacitor and the other end of the first capacitor, the other end of the second inductor is connected to the second output terminal of the H-bridge inverter of the communication signal generating unit, and the other end of the second capacitor is connected to the communication signal generating unit A sound wave output device connected to the first output terminal of an H-bridge inverter and the second input terminal of the sonar transducer. Claim 8 delete Claim 9 delete Claim 10 An environment signal generator that generates an environment signal by first control signals; a communication signal generator that generates a communication signal that is combined with the environment signal by second control signals; a signal synthesizer that generates an electrical signal for sound wave output by filtering and combining the environment signal and the communication signal; and a sonar transducer that outputs sound waves underwater using the electrical signal; wherein the environment signal generator includes P H-bridge inverters, and the first output terminal of the X-th H-bridge inverter is connected to the second output terminal of the X+1-th H-bridge inverter, where P is an integer greater than or equal to 2 and X is an integer greater than or equal to 1 and less than P (1= <X<P)인 음파 출력 장치. Claim 11 In claim 10, the communication signal generating unit comprises Q H-bridge inverters, and the first output terminal of the Y-th H-bridge inverter is connected to the second output terminal of the Y+1-th H-bridge inverter, wherein Q is an integer greater than or equal to 2 and Y is an integer greater than or equal to 1 and less than Q (1= <Y<Q)인 음파 출력 장치. Claim 12 In claim 11, the signal synthesis unit comprises first and second inductors and first and second capacitors, one end of the first inductor is connected to one end of the first capacitor and to the first input terminal of the sonar transducer, the other end of the first inductor is connected to the second output terminal of the first H-bridge inverter of the environment signal generation unit, the other end of the first capacitor is connected to the first output terminal of the P H-bridge inverter of the environment signal generation unit, one end of the second inductor is connected to one end of the second capacitor and to the other end of the first capacitor, the other end of the second inductor is connected to the second output terminal of the first H-bridge inverter of the communication signal generation unit, and the other end of the second capacitor is connected to the first output terminal of the Q H-bridge inverter of the communication signal generation unit and to the second input terminal of the sonar transducer, forming a sound wave output device. Claim 13 A sound wave output device according to claim 7, further comprising an impedance matching unit for impedance matching between the signal synthesis unit side and the sonar transducer side.

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