WO2017222222A1 - Procédé et système de réalisation d'un casque d'écoute stéréo sans fil, et support d'enregistrement non transitoire lisible par ordinateur - Google Patents

Procédé et système de réalisation d'un casque d'écoute stéréo sans fil, et support d'enregistrement non transitoire lisible par ordinateur Download PDF

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Publication number
WO2017222222A1
WO2017222222A1 PCT/KR2017/006092 KR2017006092W WO2017222222A1 WO 2017222222 A1 WO2017222222 A1 WO 2017222222A1 KR 2017006092 W KR2017006092 W KR 2017006092W WO 2017222222 A1 WO2017222222 A1 WO 2017222222A1
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WO
WIPO (PCT)
Prior art keywords
transceiver
nfmi
headset
sound source
source signal
Prior art date
Application number
PCT/KR2017/006092
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English (en)
Korean (ko)
Inventor
변우영
변우성
Original Assignee
에잇비트 주식회사
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Publication of WO2017222222A1 publication Critical patent/WO2017222222A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
    • 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
    • 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
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/07—Applications of wireless loudspeakers or wireless microphones

Definitions

  • the present invention relates to a method, system and non-transitory computer readable recording medium for providing a wireless stereo headset.
  • Bluetooth more specifically, Bluetooth Classic Audio, A2DP protocol, or Bluetooth
  • BACKGROUND Wireless headsets that receive and reproduce sound source signals wirelessly through RF (Radio Frequency) communication channels such as Low Energy Audio are widely used.
  • RF Radio Frequency
  • a full-featured wireless stereo headset has also been introduced that performs signal transmission between the headset unit mounted on the left ear and the headset unit mounted on the right ear through a wireless communication channel.
  • a technique for implementing a wireless connection between a left headset unit and a right headset unit using a short-range Radio Frequency (RF) communication channel such as Bluetooth True Wireless Stereo (TWS).
  • RF Radio Frequency
  • the present inventor performs communication between left and right headset units by using near field magnetic induction (NFMI) technology, and inconsistencies due to timing differences that may occur between audio data reproduced in each of the left and right headset units.
  • NFMI near field magnetic induction
  • the object of the present invention is to solve all the above-mentioned problems.
  • the first RF transceiver for receiving a sound source signal from an external system through an RF (Radio Frequency) communication channel, a second headset for receiving the received sound source signal through a NFMI (Near Field Magnetic Induction) communication channel
  • a first NFMI transceiver for transmitting to the unit, a first signal processor for generating first audio data by performing predetermined signal processing on the received sound source signal, and a first for reproducing the first audio data generated above;
  • a first headset unit including a first speaker unit, a second NFMI transceiver unit for receiving a sound source signal transmitted from the first headset unit via an NFMI communication channel, and a signal preset for a sound source signal received by the second NFMI transceiver unit
  • a second signal processor for generating second audio data by performing processing, and a second speech for reproducing the above generated second audio data
  • a second headset unit including a kebu portion, and referring to the time taken for the sound source signal transmitted from the first headset unit to be received by the second headset unit
  • the NFMI communication channel can be used to improve the efficiency and quality of sound source signal transmission, while preventing inconsistencies due to timing differences between audio data played in each of the left and right headset units. Another purpose is to provide a wireless stereo headset.
  • a system for providing a wireless stereo headset for receiving a sound source signal from an external system via a radio frequency (RF) communication channel, the received sound source signal
  • a first NFMI transceiver for transmitting through a NFMI communication channel
  • a first signal processor for generating first audio data by performing predetermined signal processing on the received sound source signal
  • a first headset unit including a first speaker unit for reproducing the generated first audio data
  • a second NFMI transceiver unit for receiving a sound source signal transmitted from the first headset unit via an NFMI communication channel
  • the second audio data is generated by performing predetermined signal processing on the sound source signal received by the transceiver.
  • a second headset unit including a second signal processor configured to generate a second audio data, and a second speaker unit configured to reproduce the generated second audio data, wherein a sound source signal transmitted from the first headset unit is transmitted through an NFMI communication channel.
  • a method for providing a wireless stereo headset the first headset unit receiving a sound source signal from an external system via a radio frequency (RF) communication channel, the first headset The unit transmits the received sound source signal through a Near Field Magnetic Induction (NFMI) communication channel, and performs a predetermined signal processing on the received sound source signal to perform playback on the first headset unit.
  • RF radio frequency
  • NFMI Near Field Magnetic Induction
  • the second headset unit receives a sound source signal transmitted from the first headset unit via an NFMI communication channel, The second headset unit by performing predetermined signal processing on the sound source signal received by the unit Generating second audio data to be reproduced, and reproducing the generated second audio data, wherein the first headset unit is configured to generate a sound source signal transmitted from the first headset unit through an NFMI communication channel.
  • non-transitory computer readable recording medium for recording another method, system, and computer program for executing the method for implementing the present invention.
  • the effect of improving the power efficiency in the near field is achieved as compared with the prior art using the RF communication channel.
  • the effect of reducing the extent to which the transmission signal affects the human body or is attenuated by the human body as compared with the prior art using the RF communication channel is achieved.
  • the effect of allowing the bandwidth to be utilized with ease as compared to the prior art using the RF communication channel that must strictly adhere to a predetermined bandwidth is achieved.
  • the strength of the NFMI signal decreases drastically, so that the interference between the plurality of NFMI signals generated in each of the plurality of wireless stereo headsets can be significantly reduced.
  • the effect of increasing the security by preventing the generated NFMI signal from spreading far is achieved.
  • the effect that the timing of the audio data played back in each of the left and right headset units can be synchronized is achieved. do.
  • FIG. 1 is a diagram schematically showing an external configuration of a wireless stereo headset system according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an internal configuration of a wireless stereo headset system according to an embodiment of the present invention.
  • FIG. 3 is a diagram exemplarily illustrating an internal configuration of an NFMI transceiver according to an embodiment of the present invention.
  • FIG. 4 is a diagram illustrating an internal configuration for timing synchronization of a wireless stereo headset system according to an embodiment of the present invention.
  • FIG. 5 is a diagram conceptually illustrating a result of timing synchronization between audio data reproduced between each of a first headset unit and a second headset unit according to an embodiment of the present invention.
  • 110A, 120A RF Transceiver of External System
  • 210A first RF transceiver
  • FIG. 1 is a diagram schematically showing an external configuration of a wireless stereo headset system according to an embodiment of the present invention.
  • a wireless stereo headset system 200 may include a first headset unit 200A and a second headset unit which may be worn on the left and right ears of the user 10, respectively. 200B).
  • each of the first headset unit 200A and the second headset unit 200B may be connected to each other only through a wireless communication channel or may be connected to an external system 100. completely wireless).
  • the first headset unit 200A is configured to provide an external system 100 (eg, a smartphone) through an RF communication channel such as low power Bluetooth (BLE). And a sound source signal from a tablet, and the like, and transmit the received sound source signal to the second headset unit 200B through a near field magnetic induction (NFMI) communication channel. After applying a predetermined time delay to the audio data according to the sound source signal, the sound source signal may be reproduced by the speaker included in the first headset unit 200A.
  • an external system 100 eg, a smartphone
  • BLE low power Bluetooth
  • NFMI near field magnetic induction
  • the second headset unit 200B may receive a sound source signal transmitted from the first headset unit 200A, and may receive the above sound source signal.
  • the audio data may be reproduced in the speaker included in the second headset unit 200B.
  • the first headset unit 200A and the second headset unit 200B included in the wireless stereo headset system 200 are master headsets according to the relative relationship therebetween. It can be either a unit or a slave headset unit.
  • the headset unit that directly receives the sound source signal from the external system 100 may be a master headset unit, and indirectly receives the sound source signal from another headset unit.
  • the headset unit may be a slave headset unit.
  • FIG. 2 is a diagram illustrating an internal configuration of a wireless stereo headset system according to an embodiment of the present invention.
  • the wireless stereo headset system 200 includes a first headset unit 200A and a second headset unit 200B, which may be worn on the left and right ears of the user, respectively. It may include.
  • the first headset unit 200A and the second headset unit 200B are each a radio frequency (RF) transceiver 210A, 210B, NFMI transceiver 220A, 220B, respectively.
  • RF radio frequency
  • the RF transceiver 210A, 210B, the NFMI transceiver 220A, 220B, the signal processor 230A, 230B, and the speaker 240A, 240B are at least some of which are external systems.
  • Such program modules may be included in the wireless stereo headset system 200 in the form of operating systems, application modules, and other program modules, and may be physically stored on various known storage devices.
  • program modules may be stored in a remote storage device capable of communicating with the wireless stereo headset system 200.
  • program modules include, but are not limited to, routines, subroutines, programs, objects, components, data structures, etc. that perform particular tasks or execute particular abstract data types, described below, in accordance with the present invention.
  • the wireless stereo headset system 200 Although described above with respect to the wireless stereo headset system 200, this description is exemplary, and at least some of the components or functions of the wireless stereo headset system 200 are realized within the external system 100 as needed. It will be apparent to those skilled in the art that the present invention may be incorporated into the external system 100.
  • the first RF transceiver 210A included in the first headset unit 200A is connected to the external system 100 (more specifically, through the RF communication channel 21). It may perform a function of receiving a sound source signal from the RF transceiver (110A, 110B) included in the external system (100A, 100B).
  • the RF communication channel used to receive a sound source signal from the external system 100 may include a Bluetooth Low Energy (BLE) communication channel.
  • BLE Bluetooth Low Energy
  • the RF communication technology that can be used in the present invention is not necessarily limited to low power Bluetooth, and any other RF communication technology (for example, Wi-Fi) within the scope of achieving the object of the present invention. , Wi-Fi Direct, LTE, etc.) can be used.
  • the sound source signal from the external system 100 is received by the first RF transceiver 210A through the RF communication channel or the first RF transceiver 210A is connected to the external system (
  • the first RF transceiver 210A is controlled.
  • a predetermined control signal may be transmitted to the first NFMI transceiver 220A through a control line 23, and according to the control signal, the first NFMI transceiver 220A may transmit a second NFMI transceiver 220B. Can serve as a transmitter for transmitting a sound source signal.
  • the sound source signal from the external system 100 is received by the first RF transceiver 210A through the RF communication channel or the first RF transceiver 210A is connected to the external system ( In case of connection (or Bluetooth pairing) with the RF transceiver 110 of the 100, the first RF transceiver 210A transmits the first NFMI transceiver 220A to the first NFMI transceiver 220A through the data line 24. 2 may transmit (or relay) a sound source signal to be transmitted to the headset unit 200B, and accordingly, the first NFMI transceiver 220A transmits the sound source signal to the second headset unit 200B. You can do it.
  • the sound source signal from the external system 100 is not received by the first RF transceiver 210A or the first RF transceiver 210A is transmitted through the RF communication channel.
  • the first RF transceiver 210A is connected to a control line.
  • a control signal may be transmitted to the first NFMI transceiver 220A through a control line 23.
  • the first NFMI transceiver 220A may transmit a second NFMI transceiver 220B. It may be able to serve as a receiver for receiving a sound source signal from the.
  • the first NFMI transceiver 220A included in the first headset unit 200A transmits the received sound source signal through the NFMI communication channel 22 to the second headset.
  • a function of transmitting to the unit 200B (more specifically, the second NFMI transceiver 220B included in the second headset unit 200B) may be performed.
  • the first NFMI transceiver 220A may include a second headset unit (eg, a stereo, 5.1 channel, etc.) signal included in a sound source signal. Only some sound source signals that need to be reproduced by 200B can be transmitted to the second headset unit 200B. For example, when the first headset unit 200A is worn on the user's left ear and the second headset unit 200B is worn on the user's right ear, the first NFMI transceiver 220A is connected from the external system 100. Of the received sound source signals, only some sound source signals to be reproduced with respect to the right ear of the user may be transmitted to the second headset unit 200B.
  • a second headset unit eg, a stereo, 5.1 channel, etc.
  • the first signal processor 230A included in the first headset unit 200A may perform predetermined signal processing such as encoding, decoding, and amplification on the received sound source signal.
  • the function of generating first audio data to be reproduced in the first speaker unit 240A may be performed by performing the operation.
  • the first speaker unit 240A included in the first headset unit 200A may perform a function of reproducing the generated first audio data.
  • the second NFMI transceiver 220B included in the second headset unit 200B may include a first headset unit (more specifically, a first headset) through an NFMI communication channel.
  • a function of receiving a sound source signal transmitted from the first NFMI transceiver 220A) included in the unit 200A may be performed.
  • the sound source signal from the external system 100 is not received by the second RF transceiver 210B through the RF communication channel or the second RF transceiver 210B is the external system.
  • the sound source signal is received by the second NFMI transceiver 220B without being connected (or Bluetooth pairing) with the RF transceiver 110 of 100 (ie, the second headset unit 200B is a slave headset unit).
  • the second RF transceiver 210B may transmit a predetermined control signal to the second NFMI transceiver 220B through a control line 25, and, according to the control signal,
  • the second NFMI transceiver 220B may serve as a receiver for receiving a sound source signal from the first NFMI transceiver 220A.
  • the second RF transceiver 210B is received by the second NFMI transceiver 220B.
  • the sound source signal may be transmitted (or relayed) to the second signal processor 230B through the data line 26.
  • the sound source signal from the external system 100 is received by the second RF transceiver 210B through the RF communication channel or the second RF transceiver 210B is external.
  • the second RF transceiver 210B is connected to the second NFMI transceiver 220B via a control line 25.
  • a predetermined control signal may be transmitted to the second NFMI transceiver 220B according to the control signal, and thus the second NFMI transceiver 220B may serve as a transmitter for transmitting a sound source signal to the first NFMI transceiver 220A. have.
  • the second signal processor 230B included in the second headset unit 200B may perform predetermined signal processing such as encoding, decoding, and amplification on the received sound source signal.
  • the second audio data to be reproduced in the second speaker unit 240B may be generated by performing the operation.
  • the second speaker unit 240B included in the second headset unit 200B may perform a function of reproducing the second audio data generated above.
  • FIG. 3 is a diagram illustrating an internal configuration of an NFMI transceiver according to an embodiment of the present invention.
  • the NFMI transceiver 220 (corresponding to both the first NFMI transceiver 220A and the second NFMI transceiver 220B) according to an embodiment of the present invention may include a magnetic induction transceiver antenna unit ( MI Transceiver Aerial (221), MI MAC Controller (222), Audio Sample Rate Converter (223), Audio Latency Controller (224), G. 722 / ADPCM encoding unit (G.722 / ADPCM Encoder) 225, I2S / PCM controller (I2S / PCM Controller) 226, audio digital signal processing unit (Audio DSP) 227, and system controller (System Controller) ( 228).
  • MI Transceiver Aerial MI Transceiver Aerial
  • MI MAC Controller 222
  • Audio Sample Rate Converter (223
  • Audio Latency Controller 224
  • G. 722 / ADPCM encoding unit G.722 / ADPCM Encoder
  • I2S / PCM controller I2S /
  • the RF transceiver 210 transmits a predetermined control signal to the NFMI transceiver 220 through the control line 31, thereby providing an NFMI transceiver.
  • the setting value of the internal component of 220 may be changed, or the role of the NFMI transceiver 220 (a role as a transmitter or a role as a receiver) may be changed.
  • the RF transceiver 210 according to an embodiment of the present invention transmits a sound source signal through a data line 32 and performs audio digital according to audio data values (I 2 S, PCM, etc.).
  • the sound source signal may be selectively input to the signal processor 227.
  • the sound source signal is received by the first RF transceiver 210A from the external system 100 via the RF communication channel or the first RF transceiver 210A is connected to the external system 100.
  • the RF transceiver 110 of () when the first headset unit 200A becomes the master headset unit the first RF transceiver 210A or the first signal
  • the processor 230A refers to the first headset unit (see the time taken for the sound source signal transmitted from the first headset unit 200A to be received by the second headset unit 200B through the NFMI communication channel).
  • a time delay to be applied to the first audio data to be reproduced may be determined.
  • FIG. 4 is a diagram illustrating an internal configuration for timing synchronization of a wireless stereo headset system according to an embodiment of the present invention.
  • FIG. 5 is a diagram conceptually illustrating a result of timing synchronization between audio data reproduced between each of a first headset unit and a second headset unit according to an embodiment of the present invention.
  • the first RF transceiver 210A or the first signal processor 230A includes a sound source signal from the first headset unit 200A to the second headset unit 200B through the NFMI communication channel.
  • the second headset due to the time 530 (ie, the time required for transmitting and receiving the sound source signal performed by the first NFMI transceiver 220A and the second NFMI transceiver 220B) for transmitting to the second headset.
  • the second audio data reproduced in the unit 200B may be reproduced later by a predetermined time (for example, several ms) compared with the first audio data reproduced in the first headset unit 200A.
  • the first time delay unit 211A included in the first RF transceiver 210A is received by the first RF transceiver 210A.
  • the sound source signal may be delayed for a predetermined time and then transferred to the first signal processor 230A, whereby the timing of the first audio data reproduced in the first headset unit 200A is reproduced in the second headset unit 200B. And the timing of the second audio data to be synchronized.
  • the first time delay unit 211A may determine the length 540 of the time delay to be applied to the first audio data based on the audio sampling rate. For example, when the audio sampling rate is 48 kHz, the length of time delay to be applied for the first audio data may be determined to be 3 ms.
  • time delay unit for performing a time delay function for timing synchronization between the first audio data and the second audio data has been mainly described for the embodiment included in the RF transceiver
  • the time delay unit according to the present invention The configuration is not necessarily limited to those listed above, and it is understood that the time delay unit may be included in other components such as an NFMI transceiver, a signal processor, and the like within the scope of achieving the object or effect of the present invention.
  • the first NFMI transceiver 220A and the second NFMI transceiver 220B may transmit a sound source signal using a frequency band of several GHz or may use a multiple input multiple output (MIMO). By transmitting the sound source signal in a manner, it is possible to increase the bandwidth of the NFMI communication channel.
  • MIMO multiple input multiple output
  • the wireless stereo headset system 200, the antenna included in the first NFMI transceiver 220A and the antenna included in the second NFMI transceiver 220B are on the same axis. By being coaxial or coplanar with each other, the NFMI communication distance can be increased.
  • the wireless stereo headset system 200 performs communication between the first headset unit 200A and the second headset unit 200B through an RF communication channel rather than an NFMI communication channel. can do.
  • the first headset unit 200A and the second headset unit 200B do not include the first NFMI transceiver 220A and the second NFMI transceiver 220B, respectively.
  • the first RF transceiver 210A included in the first headset unit 200A and the second RF transceiver 210B included in the second headset unit 200B are the first NFMI transceiver 220A and the second receiver, respectively. 2
  • the power or function of the NFMI transceiver 220B may be cut off.
  • the first RF transceiver 210A included in the first headset unit 200A may receive a sound source signal from the external system 100 through an RF communication channel. After transmitting the received sound source signal to the second RF transceiver 210B included in the second headset unit 200B through the RF communication channel, while delaying the received sound source signal for a predetermined time. The signal may be transferred to the first signal processor 230A.
  • the second RF transceiver 210B included in the second headset unit 200B may receive a sound source signal received from the first RF transceiver 210A through an RF communication channel. It may be received, and may transmit the received sound source signal to the second signal processor 230B.
  • the timing of the first audio data reproduced in the first headset unit 200A can be synchronized with the timing of the second audio data reproduced in the second headset unit 200B.
  • Embodiments according to the present invention described above may be implemented in the form of program instructions that may be executed by various computer components, and may be recorded on a non-transitory computer readable recording medium.
  • the non-transitory computer readable recording medium may include program instructions, data files, data structures, etc. alone or in combination.
  • the program instructions recorded on the non-transitory computer readable recording medium may be those specially designed and configured for the present invention, or may be known and available to those skilled in the computer software arts.
  • non-transitory computer readable recording media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs, DVDs, magnetic-optical media such as floppy disks ( magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like.
  • program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.
  • the hardware device may be configured to operate as one or more software modules to perform the process according to the invention, and vice versa.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Headphones And Earphones (AREA)

Abstract

La présente invention concerne un procédé et un système de réalisation d'un casque d'écoute stéréo sans fil, et un support d'enregistrement non transitoire lisible par ordinateur. Un aspect de la présente invention concerne un système de réalisation d'un casque d'écoute stéréo sans fil, le système comprenant : une première unité de casque d'écoute contenant une première unité d'émission/réception RF, une première unité d'émission/réception NFMI, une première unité de traitement de signal et une première unité de haut-parleur; et une deuxième unité de casque d'écoute contenant une deuxième unité d'émission/réception NFMI, une deuxième unité de traitement de signal et une deuxième unité de haut-parleur, dans lequel casque d'écoute un retard à appliquer aux premières données audio est déterminé par référence au temps nécessaire pour recevoir, par la deuxième unité de casque d'écoute, un signal de source sonore qui a été émis par la première unité de casque d'écoute par l'intermédiaire d'un canal de communication NFMI.
PCT/KR2017/006092 2016-06-22 2017-06-12 Procédé et système de réalisation d'un casque d'écoute stéréo sans fil, et support d'enregistrement non transitoire lisible par ordinateur WO2017222222A1 (fr)

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KR1020160077985A KR101843800B1 (ko) 2016-06-22 2016-06-22 무선 스테레오 헤드셋을 제공하기 위한 방법, 시스템 및 비일시성의 컴퓨터 판독 가능한 기록 매체
KR10-2016-0077985 2016-06-22

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WO2021042875A1 (fr) * 2019-09-02 2021-03-11 华为技术有限公司 Écouteur

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KR102127209B1 (ko) 2018-11-14 2020-06-30 주식회사 오르페오사운드웍스 무선 이어셋 통신 처리 시스템 및 방법
KR20210093036A (ko) * 2020-01-17 2021-07-27 삼성전자주식회사 오디오 출력 장치 및 오디오 출력 속도 제어 방법
KR20220017332A (ko) * 2020-08-04 2022-02-11 삼성전자주식회사 오디오 데이터를 처리하는 전자 장치와 이의 동작 방법

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