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WO2015093842A1 - Procédé de traitement de signal multicanal et de travail pour la reproduction d'un signal acoustique sous-marin dans l'air, et dispositif de transfert d'informations l'utilisant - Google Patents

Procédé de traitement de signal multicanal et de travail pour la reproduction d'un signal acoustique sous-marin dans l'air, et dispositif de transfert d'informations l'utilisant Download PDF

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Publication number
WO2015093842A1
WO2015093842A1 PCT/KR2014/012466 KR2014012466W WO2015093842A1 WO 2015093842 A1 WO2015093842 A1 WO 2015093842A1 KR 2014012466 W KR2014012466 W KR 2014012466W WO 2015093842 A1 WO2015093842 A1 WO 2015093842A1
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signal
underwater
air
sound
signal processing
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PCT/KR2014/012466
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English (en)
Korean (ko)
Inventor
김시문
변성훈
최현택
김기훈
이종무
Original Assignee
한국해양과학기술원
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Publication of WO2015093842A1 publication Critical patent/WO2015093842A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/801—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/802—Systems for determining direction or deviation from predetermined direction
    • G01S3/808—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/8083—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems determining direction of source
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/127—Underwater acoustics, e.g. for submarine
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups

Definitions

  • the present invention relates to a signal processing method and apparatus for reproducing an underwater acoustic signal in the air as it is. More specifically, a listener that measures a sound wave signal received at two points in the water and is located outside the water
  • the present invention relates to a multi-channel signal processing and processing method for reproducing in-air acoustic signals in the air for recognizing the angle of incidence and magnitude of underwater noise in the same way as the underwater environment.
  • the present invention through the above-described signal processing, to reproduce the sound signal received at two points in the water through the stereo channel, such as headphones in the underwater environment to reproduce the underwater sound signal in the air multiple It relates to a channel signal processing and processing method and an information transmission device using the same.
  • the underwater acoustic communication technology using sound waves is widely used in the underwater environment, such as in the sea, because unlike the air can not directly hear the voice or sound.
  • the apparatus and method for compensating sound absorption characteristics of the underwater acoustic communication signal presented in Korean Patent Publication No. 10-0916857 the reverse response calculation unit for calculating the reverse response to the equivalent low pass frequency response of the sound absorption coefficient
  • a sound absorption compensator for generating a transmission signal in which the frequency response of the sound absorption coefficient is compensated in the baseband of the time domain or the frequency domain by using the reverse response calculated by the reverse response calculator. It is configured to compensate for signal distortion due to sound absorbing phenomenon generated in the process of propagating the inside.
  • the sound absorption phenomenon caused by the underwater acoustic communication signal propagating in the water is processed by the transmitter to compensate in advance and transmit the performance of the underwater acoustic modem such as bit error rate or received signal-to-noise ratio. Can be improved.
  • the hydroacoustic holography calculation method considering the reflected wave of the water contact surface presented in the above-mentioned Patent Publication No. 10-0558902 considers the acoustic characteristics at the contact surface between air and water, and a plurality of vertically arranged underwater acoustic sensors
  • the present invention relates to a method for calculating underwater acoustic holography in consideration of reflected waves of an air and water contact surface that can visualize a sound field by applying a condition that a sound pressure on a surface becomes zero by using the above.
  • the two-plane acoustic holography measuring method described in the present invention relates to a two-plane hydroacoustic holography measuring method for predicting sound pressure distribution in consideration of acoustic characteristics in each plane in which an array sensor for detecting sound generated from an underwater sound source is dually aligned. .
  • Patent Nos. 10-0558902 and 10-0621205 it is possible to analyze the characteristics of the underwater noise source and the underwater sound field in any space where the reflected waves exist, thereby reducing the influence of the reflected waves as in the prior art. This reduces the effort, time and cost of making measurements in large tanks where the effects of an unscented or reflected wave can be ignored.
  • the human ear is adapted to recognize the direction of the sound source through the time difference of the sound waves reaching both the right and left ears.
  • an object of the present invention is to provide a technique for reproducing an underwater acoustic signal in the air in order to make the underwater sound the same.
  • Another object of the present invention it is possible to recognize the acoustic environment of the underwater in the ship's control room the same when the underwater operation using a remote control robot such as a remote control remotely operated vehicle (ROV) and the like, it is easy to locate the underwater noise source At the same time, to provide a multi-channel signal processing and processing method for the reproduction of underwater acoustic signals in the air configured to increase the work efficiency and an information transmission device using the same.
  • a remote control robot such as a remote control remotely operated vehicle (ROV) and the like
  • Another object of the present invention is to be able to recognize the acoustic environment of the underwater in the air in the same way to increase the location and recognition ability of the underwater noise source, so that it is easy to locate the underwater noise source in the submersible or submarine
  • An object of the present invention is to provide a multi-channel signal processing and processing method for reproducing an underwater sound signal in air and an information transmission device using the same.
  • multi-channel signal processing for reproducing the underwater sound signal in the air for reproducing the underwater sound signal in the air so that the sound of the underwater can feel the same outside the water
  • a processing method comprising: an acoustic signal receiving step of receiving an underwater acoustic signal by an acoustic receiving means including a hydrophone; An A / D conversion step of converting the received underwater sound signal into a digital signal through an A / D converter; A signal processing step of performing a signal processing for reproducing the underwater sound signal in the air to the digital signal converted in the A / D conversion step by a signal processor; A D / A conversion step of converting the signal processed in the signal processing step into an analog signal by a D / A converter; And a sound output step of outputting a signal converted in the D / A conversion step by a sound output means, thereby recognizing the acoustic environment of the water in the air in the same way, thereby improving the location and recognition capability of the underwater noise
  • the method comprises a sound signal amplifying step for minimizing and amplifying noise of the underwater sound signal received in the sound signal receiving step by a low noise amplifier; A first filtering step for passing only a signal in a frequency domain required from the signal amplified in the sound signal amplifying step by using a filter; An electric signal amplifying step for amplifying the signal filtered in the first filtering step by using a signal amplifier; And a second filtering step for filtering the signal amplified in the electrical signal amplifying step and sending the filtered signal to the A / D conversion step. And a power amplification step for amplifying the signal converted in the D / A conversion step by using a power amplifier and sending the signal to the sound output step, if necessary.
  • ⁇ w is the time difference between the two sound pressure signals and c w is the speed of sound in the water.
  • the signal processing may be performed by using the following equation.
  • an information transmission device for reproducing the underwater sound signal in the air comprising: a sound receiver comprising a pair of hydrophones (hydrophones) for receiving an electric sound wave and generating an electric signal; An A / D converter for converting an analog signal received from each hydrophone to a digital signal; A signal processor for performing signal processing for reproducing the underwater sound signal converted by the A / D converter in air; A D / A converter converting the signal processed by the signal processor into an analog signal; And a sound output section including sound output means for outputting a signal converted by the D / A converter, wherein the signal processor includes: multi-channel signal processing for reproducing in air of the underwater sound signal described above And an information transmission device for reproducing in the air of an underwater acoustic signal, characterized in that it is configured to perform a process according to a processing method.
  • the sound output means is characterized in that it comprises a stereo headphone or speaker for converting the signal converted by the D / A converter into a stereo sound and output.
  • the apparatus includes a low noise amplifier for minimizing and amplifying noise of the underwater acoustic signal received by the acoustic receiver; A filter for passing only signals in the required frequency range; A signal amplifier for amplifying the electrical signal; And a power amplifier for amplifying the signal converted by the D / A converter in order to drive the sound output means of the sound output unit.
  • the sound receiving unit is configured to include a plurality of N hydrophones
  • the signal processor is configured to perform signal processing for the sound signal of the N channel
  • the sound output unit is the sound of the N channel Characterized in that it comprises a sound output means for outputting a signal.
  • a remote control unmanned submersible for performing underwater operations using a remote control remotely operated vehicle (ROV)
  • ROV remotely operated vehicle
  • multiple for reproducing the underwater acoustic signal described above in the air Converting the underwater sound signal by performing a process according to a channel signal processing and processing method;
  • Outputting the converted underwater acoustic signal through an acoustic system of a ship control room that controls the remote controlled unmanned submersible (ROV);
  • performing the control of the remote controlled unmanned submersible (ROV) according to the output sound signal thereby making the underwater acoustic environment in the ship control room the same during underwater operation using the remote controlled unmanned submersible (ROV).
  • a remote control unmanned submersible operation method is provided, which is configured to be recognizable to facilitate the identification of an underwater noise source and to increase work efficiency.
  • the angle of incidence of the sound source existing in the water is listened and estimated in the air without checking by numbers or graphs, so that the underwater sound source can be easily heard and the position of the underwater noise source can be easily grasped during underwater work.
  • the multi-channel signal processing and processing method for reproducing underwater sound signals in the air to improve the location and recognition of underwater noise sources, and the information transmission device using the same provide the same sound underwater. It is possible to solve the problems of the conventional underwater sound signal processing methods, which have not been presented in the technical contents of reproducing the underwater sound signal in the air in order to be able to feel it.
  • the multi-channel signal processing and processing method for reproducing the underwater acoustic signal in the air configured to enhance the location and recognition ability of the underwater noise source outside the water, and the information transmission device using the same
  • the underwater acoustic environment can be recognized in the ship's control room during underwater operation using a remote control robot such as a remote control unmanned submersible (ROV), thereby facilitating the location of the underwater noise source and increasing the work efficiency.
  • ROV remote control unmanned submersible
  • the multi-channel signal processing and processing method for reproducing in the air of the underwater acoustic signal configured to enhance the location and recognition ability of the underwater noise source outside the water and the information transmission device using the same
  • the location of the underwater noise source can be easily identified inside the submersible or submarine.
  • FIG. 1 is a block diagram schematically showing the overall configuration of an information transmission device to which a multi-channel signal processing and processing method for reproducing an underwater sound signal in air according to an embodiment of the present invention.
  • FIG. 2 is a view showing a comparison between propagation of sound waves in water and in air.
  • 3 is a diagram illustrating propagation of sound waves in water in the case where N incident waves exist.
  • FIG. 4 is a table showing each parameter value used in a simulation for the operation experiment of the information transmission device to which the multi-channel signal processing and processing method for reproducing in-air acoustic signals in the air according to the embodiment of the present invention shown in FIG. The figure shows in a summary.
  • FIG. 5 is a diagram illustrating a signal received in each hydrophone when the simulation is performed under the conditions shown in FIG. 4.
  • FIG. 6 is a diagram illustrating an output signal reproduced by an information transmitting device to which a multi-channel signal processing and processing method for reproducing in-air acoustic signals in air according to an embodiment of the present invention shown in FIG. 1 is applied.
  • FIG. 7 is a flowchart schematically showing the overall configuration of a multi-channel signal processing and processing method for reproducing in-air acoustic signals in air according to an embodiment of the present invention.
  • the present invention as will be described later, the problem of the conventional underwater sound signal processing methods that have not been presented in the technical contents for reproducing the underwater sound signal in the air in order to be able to feel the sound of the underwater even in the water.
  • the present invention relates to a multi-channel signal processing and processing method for reproducing underwater sound signals in the air to improve the localization and recognition capability of the antenna and information transmission device using the same.
  • the present invention as described below, it is possible to recognize the acoustic environment of the underwater in the ship control room during the underwater operation using a remote control robot such as a remote control unmanned submersible (ROV), etc.
  • a remote control robot such as a remote control unmanned submersible (ROV), etc.
  • the present invention relates to a multi-channel signal processing and processing method for reproducing in-air acoustic signals in the air configured to increase work efficiency and an information transmission device using the same.
  • the present invention by being able to recognize the acoustic environment of the underwater in the air in the same way to increase the location and recognition ability of the underwater noise source, it is easy to determine the location of the underwater noise source in the submersible or submarine
  • the present invention relates to a multi-channel signal processing and processing method for reproducing in-air acoustic signals in air, and an information transmission device using the same.
  • FIG. 1 is a block diagram schematically illustrating the overall configuration of an information transmission apparatus to which a multi-channel signal processing and processing method for reproducing underwater sound signals in air according to an embodiment of the present invention is applied.
  • the information transmitting apparatus 10 is divided into a pair of hydrophones (an acoustic receiver including hydrophones 11, a low noise amplifier 12 connected to each of the hydrophones 11 of the acoustic receiver, a first filter 13, a signal amplifier signal amplifier 14 and second filter 15, A / D converter 16 for converting the analog signal received from each hydrophone 11 into a digital signal, and the converted digital signal as described later.
  • a pair of hydrophones an acoustic receiver including hydrophones 11, a low noise amplifier 12 connected to each of the hydrophones 11 of the acoustic receiver, a first filter 13, a signal amplifier signal amplifier 14 and second filter 15, A / D converter 16 for converting the analog signal received from each hydrophone 11 into a digital signal, and the converted digital signal as described later.
  • a signal processor 17 for performing the same signal processing, a D / A converter 18 for converting the signal processed by the signal processor 17 back to an analog signal, and a power amplifier for amplifying the converted analog signal.
  • 19 and 2 channels of electrical signals in stereo Is configured to include a sound output made, including audio output devices such as stereo headphones transform 20 that.
  • the hydrophone 11 is a device for generating an electrical signal by receiving sound waves
  • the low noise amplifier 12 is a device for amplifying the received weak signal by minimizing noise.
  • the first and second filters 13 and 15 are devices for passing only signals in the frequency region of interest
  • the signal amplifier 14 is a device for amplifying small electric signals
  • the A / D converter 16 is It is a device that samples electrical signals and converts them into digital data that can be processed.
  • the signal processor 17 is a device for converting the data signal collected by the hydrophone 11 by the signal processing as described below, the D / A converter 18 generates an analog electric signal from the digital data Device.
  • the power amplifier 19 is an apparatus for amplifying the power of the signal in order to drive the stereo headphone 20 of the sound output unit, and the stereo headphone 20 is formed of two channels obtained from the pair of hydrophones 11 described above. It is a device for converting electrical signals into stereo sound.
  • the low noise amplifier 12, the respective filters 13, 15, and the signal amplifier 14 have appropriate characteristics according to the signal strength and noise characteristics.
  • the filter can be selected and used, and in some cases, it can be omitted.
  • the above-described power amplifier 19 can also be omitted.
  • the information transmitting device 10 to which the multi-channel signal processing and processing method for reproducing the underwater sound signal in the air according to the embodiment of the present invention shown in FIG. 1 is applied, the sound receiving unit and the sound output unit are respectively.
  • the present invention has been described with an example of a pair of hydrophones 11 and headphones for outputting stereo audio signals of two channels, the present invention is not necessarily limited to the configuration as shown in FIG.
  • the present invention may include a plurality of N hydrophones instead of the pair of hydrophones 11, and the sound output unit may further include a speaker or a speaker. It should be noted that the present invention may be configured in various ways as necessary, such as a sound system for outputting sound signals of N channels.
  • the signal of the information transmission device 10 to which the multi-channel signal processing and processing method for reproducing in air of the underwater acoustic signal according to the embodiment of the present invention shown in FIG. 1 as described above is applied. Details of the signal processing performed by the processor 17 will be described.
  • FIG. 2 is a diagram illustrating a comparison of propagation of sound waves in water and in air.
  • ⁇ w denotes a time difference between two sound pressure signals and c w denotes a sound velocity in water.
  • plane wave signals incident at an angle of ⁇ a to two hydrophones having a distance d a in the air are respectively p a1 (t) and p a2.
  • p a1 (t) and p a2 (t) satisfy the following expressions such as [Equation 3] and [Equation 4].
  • FIG. 3 is a diagram showing propagation of sound waves in water with respect to the case where N incident waves exist.
  • the incident angle of the nth plane wave The sound pressure signal of the nth plane wave
  • the sound pressure signals P w1 (t) and P w2 (t) due to the N plane waves can be expressed by Equations 7 and 8 below.
  • P w2 (t) is It can be represented by the sum of the time delay signals as shown in Equation 11 below.
  • FIG. 4 is used for a multi-channel signal processing and processing method for reproducing in-air acoustic signals in air according to an embodiment of the present invention, and for simulation for an operation experiment of an information transmission device using the same. It is a figure which shows each parameter value collectively.
  • FIG. 5 is a diagram showing a signal received in each hydrophone when the simulation is performed under the conditions as shown in FIG.
  • the present inventors assume a case where three incident waves exist, and assume that the magnitude of each incident wave is different from each other. Simulations were performed based on the values.
  • FIG. 6 is a diagram illustrating a multi-channel signal processing and processing method for reproducing an underwater acoustic signal in air according to an embodiment of the present invention, and an output signal reproduced by an information transmitting apparatus using the same. .
  • the two signals are different from each other. Accordingly, as described above, the multi-channel signal processing and processing method for reproducing the underwater sound signal in the air according to the embodiment of the present invention and the same The information transmission device used can be implemented.
  • FIG. 7 is a flowchart schematically illustrating an overall configuration of a multi-channel signal processing and processing method for reproducing an underwater acoustic signal in air according to an embodiment of the present invention.
  • the multi-channel signal processing and processing method for reproducing the underwater acoustic signal in the air is broadly divided into the underwater by the acoustic receiving means such as the hydrophone.
  • the acoustic receiving means such as the hydrophone.
  • the multi-channel signal processing and processing method for reproducing the underwater sound signal in the air may be configured to further include an additional processing step in addition to the above-described steps as necessary.
  • Each of the steps may further comprise.
  • the method may further comprise amplifying a signal converted into analog after signal processing by a power amplifier, if necessary.
  • the multi-channel signal processing and processing method for reproducing the underwater sound signal in the air according to the embodiment of the present invention and the information transmission device using the same can be implemented.
  • remote control robot such as remote control unmanned submersible (ROV) It is also applicable to the operation method and control system of a remote control robot that can control such an unmanned robot more easily and effectively when using underwater work.
  • ROV remote control unmanned submersible
  • the remote control unmanned submersible (ROV) operating method and control system according to an embodiment of the present invention, multi-channel signal processing and processing method for the reproduction of the underwater acoustic signal as described above in the air Converts the underwater acoustic signal by performing the processing according to the method, and outputs the converted underwater acoustic signal through the acoustic system of the ship control room which controls the remote control unmanned submersible (ROV). It is configured to perform the control of the ROV, so that the underwater acoustic environment can be recognized in the ship's control room during underwater operation using the remote control unmanned submersible (ROV), making it easier to locate the underwater noise source and increasing the work efficiency. You can.
  • the present invention by implementing a multi-channel signal processing and processing method for the reproduction of the underwater sound signal in the air as described above and an information transmission device using the same, according to the present invention, By listening and estimating the angle of incidence in the air without checking numbers or graphs, it can be configured to listen to underwater sounds on the ship during underwater work and easily grasp the location of underwater noise sources.
  • a signal processing method for reproducing a stereo underwater sound signal in the air and a signal processing device using the same the technical content of reproducing the underwater sound signal in the air in order to make the underwater sound feel the same outside the water
  • the door of conventional underwater acoustic signal processing methods that have not been proposed You can solve that.
  • the multi-channel signal processing and processing method for reproducing the underwater acoustic signal in the air configured to enhance the location and recognition ability of the underwater noise source outside the water and the information transmission device using the same
  • the underwater acoustic environment can be recognized in the ship's control room during underwater operation using a remote control robot such as a remote control unmanned submersible (ROV), thereby facilitating the location of the underwater noise source and increasing the work efficiency.
  • ROV remote control unmanned submersible
  • the multi-channel signal processing and processing method for reproducing the underwater acoustic signal in the air which is configured to enhance the location and recognition ability of the underwater noise source outside the water, and the information transmission device using the same
  • the location of the underwater noise source can be easily identified inside the submersible or submarine.
  • the multi-channel signal processing and processing method for reproducing the underwater sound signal in the air according to the present invention as described above and the details of the information transmission apparatus using the same have been described.
  • the present invention is not limited only to the contents described in the above embodiments, and thus, the present invention may be modified, changed, or combined by various persons having ordinary skill in the art according to design needs and various other factors. And it is natural that replacement is possible.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
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  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

La présente invention concerne un procédé de traitement de signal multicanal et de travail pour la reproduction d'un signal acoustique sous-marin dans l'air, et un dispositif de transfert d'informations l'utilisant, qui permettent de reproduire, par l'intermédiaire d'un canal stéréo tel qu'un casque, un signal d'onde sonore, qui est reçu au niveau de deux points sous l'eau, tel qu'il existe dans l'environnement sous-marin. La présente invention résout les problèmes des procédés de traitement de signal acoustique sous-marin classiques qui n'ont jamais proposé de contenus techniques pour reproduire un signal acoustique sous-marin tel quel dans l'air de manière à permettre à un utilisateur de ressentir le son comme sous l'eau même en dehors de l'eau. En outre, la présente invention concerne un procédé de traitement de signal multicanal et de travail pour la reproduction d'un signal acoustique sous-marin dans l'air, et un dispositif de transfert d'informations l'utilisant, dans lequel un angle d'incidence d'une source sonore existant sous l'eau n'est pas identifié à l'aide d'un nombre ou d'un graphe mais est estimé par écoute de cette source sonore dans l'air, de manière à pouvoir localiser facilement une source de bruit sous-marin par écoute d'un son sous-marin à bord d'un navire durant un travail sous-marin. En conséquence, la présente invention peut améliorer la capacité de reconnaissance et de localisation d'une source de bruit sous-marin, et peut simultanément augmenter l'efficacité de travail durant le travail sous-marin à l'aide d'un robot télécommandé tel qu'un véhicule téléopéré (ROV) télécommandé. En outre, la présente invention peut être appliquée à un véhicule submersible ou sous-marin habité, et permet de localiser aisément et commodément la source de bruit sous-marin dans le véhicule submersible ou sous-marin habité.
PCT/KR2014/012466 2013-12-18 2014-12-17 Procédé de traitement de signal multicanal et de travail pour la reproduction d'un signal acoustique sous-marin dans l'air, et dispositif de transfert d'informations l'utilisant WO2015093842A1 (fr)

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