WO2021172893A1 - Procédé et dispositif d'annulation d'écho - Google Patents

Procédé et dispositif d'annulation d'écho Download PDF

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Publication number
WO2021172893A1
WO2021172893A1 PCT/KR2021/002381 KR2021002381W WO2021172893A1 WO 2021172893 A1 WO2021172893 A1 WO 2021172893A1 KR 2021002381 W KR2021002381 W KR 2021002381W WO 2021172893 A1 WO2021172893 A1 WO 2021172893A1
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WIPO (PCT)
Prior art keywords
reference signal
electronic device
epd
echo
speaker
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PCT/KR2021/002381
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English (en)
Korean (ko)
Inventor
박영수
김양수
장근원
조기호
Original Assignee
삼성전자 주식회사
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Publication of WO2021172893A1 publication Critical patent/WO2021172893A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1083—Reduction of ambient noise
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics

Definitions

  • Embodiments disclosed in this document relate to a method and apparatus for removing an echo generated by introducing a voice output through a speaker into a microphone in an electronic device including one or more speakers and a microphone.
  • the electronic device may acquire the user's voice of the electronic device through the microphone while outputting the user's voice of the external device through the speaker.
  • the processed signal may be used to remove the other party's voice (ie, echo) from among the voices introduced into the microphone. This processed signal may be referred to as an echo reference signal.
  • the signal processing block In order to effectively transmit a voice signal including only the user's voice to the other party, the signal processing block must hold the echo reference signal before the processing time of the voice signal acquired through the microphone. When the acquisition of the echo reference signal is delayed due to various reasons, the voice signal is transmitted in a state in which the other party's voice is significantly included, which degrades call quality.
  • an echo control method of an electronic device includes: acquiring a first voice signal received from an external device through a communication circuit; generating a first reference signal by enhancing the first voice signal by using the first voice signal; generating a second reference signal amplifying the first reference signal; outputting the second reference signal through a speaker of the electronic device; acquiring a user's utterance including the second reference signal output through the speaker through a microphone of the electronic device; A first time at which the second reference signal output through the speaker is acquired by an echo path delay (EPD) compensator through the microphone and the second reference signal are transmitted through the internal path between the speaker and the EPD compensator comparing the second time obtained with ; performing echo cancellation on the user's utterance acquired through the microphone using the first reference signal or the second reference signal according to the comparison result; and transmitting the utterance to which the echo cancellation is applied to the external device through the communication circuit.
  • EPD echo path delay
  • an electronic device may include: a communication circuit; speaker; MIC; EPD (echo path delay) compensator; and a processor operatively coupled to the communication circuitry, the speaker, the microphone, and the EPD compensator;
  • the processor is configured to: obtain a first voice signal received from an external device through the communication circuit, use the first voice signal to generate a first reference signal that enhances the first voice signal, and generating a second reference signal amplifying a first reference signal, outputting the second reference signal through the speaker, and receiving a user's utterance including the second reference signal output through the speaker
  • a first time at which the second reference signal acquired through a microphone and output through the speaker is acquired by the EPD compensator through the microphone and the second reference signal are transmitted through an internal path between the speaker and the EPD compensator Comparing a second time acquired by an EPD compensator, and performing echo cancellation for a user's utterance acquired through the microphone using the first reference signal or the second reference signal according to the comparison result, and the communication
  • the electronic circuit may include:
  • the time at which the echo signal is acquired by the EPD compensator is the echo reference signal. Even if is less than the time obtained by the EPD compensator, it can be efficiently removed through echo reference compensation.
  • FIG. 1 is a schematic diagram illustrating a voice signal being transmitted/received between an electronic device and an external device according to an exemplary embodiment.
  • FIG. 2 is a block diagram illustrating an electronic device 100 according to an embodiment.
  • FIG 3 illustrates an internal configuration diagram of the electronic device 100 according to an embodiment.
  • FIG. 4 is a flowchart of a method of canceling an echo according to an embodiment.
  • FIG. 5 is a flowchart illustrating a method of canceling an echo using an echo reference model when an EPD value is negative according to an embodiment.
  • FIG. 6 is a flowchart illustrating a method of canceling an echo when an EPD value is changed from a negative state to a positive state according to an embodiment.
  • FIG. 7 is a block diagram of an electronic device 701 in a network environment 700 according to an embodiment.
  • FIG. 1 is a schematic diagram illustrating a voice signal being transmitted/received between an electronic device and an external device according to an exemplary embodiment.
  • the voice signal of the user A of the electronic device 100 acquired by the electronic device 100 and the voice signal of the user B of the external device 110 acquired by the external device 110 are transferred to the network 120 . ) to explain the transmission/reception situation.
  • the electronic device 100 and the external device 110 may transmit/receive a voice signal through the network 120 .
  • the user of the electronic device 100 and the user of the external device 110 may transmit/receive respective voice signals during a call.
  • the term “call” may refer to various situations in which the user and the other party's voice are exchanged, such as voice calls, video calls, and voice chats through live streaming.
  • “voice call” is a basic scenario for convenience of explanation, but the following content may be applied to various other embodiments.
  • the electronic device 100 may acquire the user's voice of the electronic device 100 through a microphone.
  • the electronic device 100 may transmit the voice acquired through the microphone to the external device 110 through the network 120 .
  • the electronic device 100 may transmit the voice A 132 of the user A of the electronic device 100 acquired through the microphone to the external device 110 through the network 120 .
  • the external device 110 may output a voice received from the electronic device 100 through a speaker.
  • the external device 110 may output the voice A 132 received from the electronic device 100 through a speaker.
  • the external device 110 may acquire the user's voice of the external device 110 through a microphone.
  • the external device 110 may acquire the voice B 131 of the user B of the external device 110 through a microphone.
  • the user B of the external device 110 may be referred to as a call counterpart or a conversation counterpart.
  • the external device 110 may transmit a voice acquired through a microphone to the electronic device 100 through the network 120 .
  • the external device 110 may transmit the voice B131 of the user B of the external device 110 acquired through the microphone to the electronic device 100 through the network 120 .
  • functions implemented in the external device 110 may also be implemented in the electronic device 100 .
  • the electronic device 100 may transmit the voice (A) 132 to the external device 110 through the network 120 while receiving the voice (B) 131 from the external device 110 .
  • the network 120 may be a short-range wireless communication network or a long-distance wireless communication network.
  • the electronic device 100 and the external device 110 transmit a voice signal through a direct communication method (eg, BT (Bluetooth)) between the devices, or a base station, an access point (AP), a server, or another user device. It can be transmitted and received through an indirectly connected communication method.
  • a direct communication method eg, BT (Bluetooth)
  • FIG. 2 is a block diagram illustrating an electronic device 100 according to an embodiment.
  • Components included in the electronic device 100 may not be limited to those illustrated in the block diagram of FIG. 2 . Components shown in the block diagram of the electronic device 100 may be removed or new components may be added. For example, the components of the electronic device 701 illustrated in FIG. 7 may be applied to the components of the electronic device 100 illustrated in FIG. 2 .
  • the electronic device 100 may include a processor 210 , a speaker 220 , a microphone 230 , an EPD compensator 240 , and a communication circuit 250 .
  • the EPD compensator 240 may include an EPD measurement unit 242 and an echo reference model unit 244 .
  • 'unit' may be referred to as 'circuit'.
  • the EPD measuring unit 242 may be understood as an EPD measuring circuit.
  • the processor 210 may be operatively and/or electrically connected to the speaker 220 , the microphone 230 , the EPD compensator 240 , and the communication circuit 250 .
  • the processor 210 executes software to configure at least one other component connected to the processor 210 (eg, the speaker 220 , the microphone 230 , the communication circuit 250 , and/or the EPD compensator 240 ). can be controlled
  • the processor 210 may perform various data processing and/or operations.
  • the electronic device 100 may acquire the first voice signal from the external device 110 through the communication circuit 250 .
  • the electronic device eg, the processor 210
  • the electronic device may acquire the utterance of the user of the electronic device 100 through the microphone 230 .
  • the electronic device 100 eg, the processor 210
  • the speaker 220 may output a voice received from the external device 110 .
  • the speaker 220 may output the first voice signal received from the external device 110 .
  • the speaker 220 of the electronic device 100 may output the user B's voice B131 received from the external device 110 .
  • the microphone 230 may acquire a voice.
  • the microphone 230 may acquire the utterance of the user of the electronic device 100 .
  • the microphone 230 may acquire the voice A 132 of the user A of the electronic device 100 .
  • the EPD compensator 240 may include an EPD measurement unit 242 and an echo reference model unit 244 .
  • various signal processing may be applied to the obtained first voice signal.
  • the electronic device 100 may output the voice of the other party to the call based on the first voice signal to the speaker 220 through a process of strengthening and amplifying the first voice signal.
  • the first reference signal may be a signal in which the first voice signal is enhanced.
  • the second reference signal may be a signal obtained by amplifying the first reference signal.
  • the second reference signal may be an echo reference signal.
  • the echo signal may be a signal corresponding to a sound in which the second reference signal is output through the speaker 220 and again flows into the microphone 230 .
  • the EPD compensator 240 may measure the EPD value through the EPD measurement unit 242 .
  • the EPD value is the time at which the echo signal is acquired by the EPD compensator 240 through the microphone 230 of the electronic device 100, and the echo reference signal arrives at the EPD compensator 240 through the internal path of the electronic device 100. It may be a value minus time.
  • the EPD compensator 240 may transmit an echo reference signal to an echo canceller.
  • the echo canceller may perform echo cancellation using the received echo reference signal.
  • the EPD compensator 240 may obtain a first reference signal from a speech enhancement block (or circuit) (eg, 303 of FIG. 3 ). When the EPD value is negative, the EPD compensator 240 may transmit the first reference signal to the echo canceller. The echo canceller may perform echo cancellation using the received first reference signal.
  • a speech enhancement block or circuit
  • the EPD compensator 240 may compensate for a difference between the first reference signal and the echo reference signal through the echo reference model unit 244 .
  • the EPD compensator 240 may compensate for a difference between the first reference signal and the echo reference signal using the echo reference model.
  • the echo reference model may be a model in which the first reference signal is input and the echo reference signal is simulated as an output.
  • An internal circuit (eg, a codec, an amplifier) of the electronic device 100 may generate a difference or delay between the first reference signal and the echo reference signal.
  • the signal difference may be generated by at least one of Digital-to-Analog converting (DAC) of a codec of the electronic device 100 or a software or hardware signal processing solution applied to an amplifier.
  • DAC Digital-to-Analog converting
  • the delay may mean a difference in time for the first reference signal and the echo reference signal to reach the EPD compensator 240 , respectively.
  • the echo reference model is a model in which the delay value generated by the internal circuit of the electronic device 100 is corrected to be 0 by pre-learning the characteristic difference between the first reference signal and the echo reference signal with an adaptive filter. can be referenced.
  • FIG 3 illustrates an internal configuration diagram of the electronic device 100 according to an embodiment.
  • the electronic device 100 may receive the first voice signal from the external device 110 through the communication circuit 250 .
  • the electronic device 100 may transmit the received first voice signal to a speech enhancement block (or circuit) 303 through a decoder 301 .
  • the electronic device 100 may enhance the first voice signal into a first reference signal through the speech enhancement block 303 .
  • the first reference signal may correspond to a first point 331 and a seventh point 337 .
  • the electronic device 100 transmits the first reference signal to internal paths of the electronic device 100 (eg, a task block 305 , a codec 307 , and an amplifier). ) (309)) may generate a second reference signal amplifying.
  • the electronic device 100 may output the second reference signal through the speaker 220 .
  • the echo signal may be the second reference signal output through the speaker 220 .
  • the echo signal may correspond to the fourth point 334 .
  • the electronic device 100 may transmit the second reference signal to the EPD compensator 240 through the first internal path 311 of the electronic device.
  • the first internal path 311 may be referred to as an internal path of the electronic device 100 connecting the second point 332 and the third point 333 .
  • the second reference signal may correspond to the second point 332 , the first internal path 311 , and the third point 333 .
  • the second reference signal may be an echo reference signal.
  • the echo reference signal may correspond to the second point 332 , the first internal path 311 , and the third point 333 .
  • the first time may be a time at which the second reference signal (or echo reference signal) is acquired by the EPD compensator 240 through the first internal path 311 .
  • the time at which the second reference signal arrives from the second point 332 to the EPD compensator 240 through the first internal path 311 may be referred to as several to tens of milliseconds (ms, milliseconds). have.
  • the electronic device 100 may acquire the user's utterance including the echo signal through the microphone 230 .
  • the first microphone signal may be a signal obtained by the user's utterance including the echo signal through the microphone 230 .
  • the first microphone signal may correspond to the fifth point 335 .
  • the electronic device 100 may transmit the first microphone signal to the EPD compensator 240 through the second internal path 313 of the electronic device 100 .
  • the second internal path 313 may be referred to as an internal path of the electronic device 100 connecting the fifth point 335 and the sixth point 336 .
  • the second time may be a time at which the first microphone signal is acquired by the EPD compensator 240 through the second internal path 313 of the electronic device 100 .
  • the EPD compensator 240 may acquire a first reference signal, an echo reference signal, and a first microphone signal transmitted through the second internal path 313 of the electronic device 100 .
  • the EPD compensator 240 may measure the first time and the second time.
  • the EPD compensator 240 may compare the first time and the second time based on the measured time.
  • the first time that the echo reference signal is acquired by the EPD compensator 240 through the first internal path 311 of the electronic device 100 is the first time that the first microphone signal is the second of the electronic device 100 .
  • the EPD compensator 240 may transmit an echo reference signal to the echo canceller 315 .
  • the echo canceller 315 may perform echo cancellation using the echo reference signal received from the EPD compensator 240 .
  • the case where the first time period is less than the second time period may correspond to a case where the EPD value is a positive number.
  • the EPD compensator 240 may transmit an echo reference signal to the echo canceller 315 .
  • the echo canceller 315 may perform echo cancellation using the echo reference signal received from the EPD compensator 240 .
  • the case where the first time is equal to the second time may correspond to a case where the EPD value is a positive number, and may be processed in the same way as when the first time is smaller than the second time.
  • the EPD compensator 240 transmits an echo reference signal to the echo canceller 315, and the echo canceller 315 uses the received echo reference signal.
  • echo cancellation can be performed.
  • the first time that the echo reference signal is acquired by the EPD compensator 240 through the first internal path 311 of the electronic device 100 is the first time that the first microphone signal is the second of the electronic device 100 . If it is greater than the second time obtained by the EPD compensator 240 through the internal path 313 , the EPD compensator 240 may transmit the first reference signal to the echo canceller 315 .
  • the EPD compensator 240 may process the first reference signal through an echo reference model.
  • the EPD compensator 240 may transmit the processed first reference signal to the echo canceller 315 .
  • the echo canceller 315 may perform echo cancellation using the processed first reference signal.
  • the case where the first time period is greater than the second time period may correspond to a case where the EPD value is a negative number.
  • the EPD compensator 240 may transmit a first reference signal to the echo canceller 315 .
  • the EPD compensator 240 may process the first reference signal through an echo reference model.
  • the EPD compensator 240 may transmit the processed first reference signal to the echo canceller 315 .
  • the echo canceller 315 may perform echo cancellation using the processed first reference signal.
  • the electronic device 100 may determine an echo cancellation method using the echo canceller 315 based on the size comparison between the first time and the second time.
  • the electronic device 100 may determine an echo cancellation method using the echo canceller 315 based on the EPD value.
  • the electronic device 100 may perform echo cancellation using the echo canceller 315 based on the determined method.
  • the electronic device 100 may transmit, to the encoder 317 , the voice on which the echo cancellation has been performed by the echo canceller 315 .
  • the electronic device 100 may transmit the echo cancelled voice to the external device 110 through the communication circuit 250 .
  • FIG. 4 is a flowchart of a method of canceling an echo according to an embodiment.
  • the electronic device 100 may obtain a first voice signal from the external device 110 through the communication circuit 250 .
  • the electronic device 100 may enhance the first voice signal into a first reference signal through the speech enhancement block 303 .
  • the electronic device 100 transmits the first reference signal through an internal path of the electronic device 100 (eg, a task block 305 , a codec 307 , and an amplifier 309 ).
  • An amplifying second reference signal may be generated.
  • the electronic device 100 may measure an EPD value through the EPD measuring unit 242 .
  • the EPD compensator 240 may obtain a second reference signal (echo reference signal) through an internal path of the electronic device 100 .
  • the EPD compensator 240 may acquire the first microphone signal through an internal path of the electronic device 100 .
  • the electronic device 100 determines the time at which the second reference signal (echo reference signal) is acquired by the EPD compensator through the internal path of the electronic device 100 through the EPD measurement unit 242 and the first microphone signal 100), it is possible to calculate the time difference obtained by the EPD compensator through the internal path.
  • the electronic device 100 may measure the sizes of the first time and the second time. The electronic device 100 may determine a case in which the first time period is shorter than the second time period corresponding to a case in which the EPD value is a positive number. The electronic device 100 may determine whether the measured EPD value is positive or negative. The electronic device 100 may determine an echo cancellation method based on the measured EPD value. According to an embodiment, when the EPD value is a positive number, the electronic device 100 may perform operation 407 . According to an embodiment, when the EPD value is a negative number, the electronic device 100 may perform operation 409 .
  • the electronic device 100 may perform echo cancellation based on the second reference signal (echo reference signal).
  • the electronic device 100 may compare the first microphone signal and the second reference signal (echo reference signal).
  • the electronic device 100 may perform echo cancellation based on the comparison result.
  • the electronic device 100 may transmit a user utterance to which echo cancellation is applied based on the second reference signal (echo reference signal) to the external device 110 (operation 411 ).
  • the electronic device 100 may transmit the user's utterance to which echo cancellation is applied based on the second reference signal to the external device 110 of the counterpart via the network 120 .
  • the electronic device 100 may perform echo cancellation based on the first reference signal.
  • the electronic device 100 may process the first reference signal using an echo reference model.
  • the electronic device 100 may perform echo cancellation through the processed first reference signal.
  • the electronic device 100 may transmit the user's utterance to which echo cancellation is applied based on the first reference signal to the external device 110 (operation 411).
  • the electronic device 100 may transmit the user's utterance to which echo cancellation is applied based on the first reference signal to the external device 110 of the counterpart via the network 120 .
  • FIG. 5 is a flowchart illustrating a method of canceling an echo using an echo reference model when an EPD value is negative according to an embodiment.
  • the flowchart shown in FIG. 5 is a method for the electronic device 100 to cancel an echo using a first reference signal when the EPD value is negative in operation 405 of FIG. 4 , that is, when the first time is greater than the second time.
  • the electronic device 100 may process the first reference signal using the echo reference model through the EPD compensator 240 .
  • the echo reference model may be a model in which the first reference signal is input and the echo reference signal is simulated as an output.
  • the electronic device 100 may transmit the processed first reference signal from the EPD compensator 240 to the echo canceller 315 .
  • the electronic device 100 may perform echo cancellation through the echo canceller 315 using the processed first reference signal.
  • the electronic device 100 may transmit the user's utterance to which echo cancellation is applied to an external device (operation 411 of FIG. 4 ).
  • FIG. 6 is a flowchart illustrating a method of canceling an echo when an EPD value is changed from a negative state to a positive state according to an embodiment.
  • the electronic device 100 performs echo cancellation through the first reference signal.
  • the applied user utterance may be transmitted to an external device.
  • the time at which the second reference signal is acquired by the EPD compensator 240 through the speaker and the internal path is obtained by the first microphone signal by the EPD compensator 240 through the internal path. It can respond to a case greater than the specified time. For example, the time at which the second reference signal is acquired to the EPD compensator 240 through the speaker and the internal path may be delayed. Operation 601 may correspond to operation 411 of FIG. 4 .
  • the electronic device 100 may determine whether the EPD value changes from a negative number to a positive number through the EPD measurement unit 242 . That is, a case in which the size of the first time period is changed from a state larger than the size of the second time period to a smaller state may correspond to a case where the EPD value changes from a negative number to a positive number.
  • the time at which the second reference signal is acquired by the EPD compensator 240 through the speaker and the internal path is the time at which the first microphone signal is acquired by the EPD compensator 240 through the internal path. It can correspond to the case of less than time.
  • the electronic device may perform operation 407 .
  • the electronic device may perform operation 601 (operation 411 of FIG. 4 ).
  • the electronic device 100 when the EPD value changes from a negative number to a positive number, the electronic device 100 performs echo cancellation through the first reference signal (operation 409 of FIG. 4 ) and uses the second reference signal to echo the echo. It may be changed to a state in which removal is performed (operation 407 of FIG. 4 ).
  • the electronic device 100 may perform echo cancellation through the first reference signal.
  • the electronic device 100 may transmit the user's utterance to which the echo cancellation is applied to an external device (operation 601).
  • it may not be limited to changing the EPD value from a negative number to a positive number.
  • the change of the echo cancellation method may be reversely applied.
  • FIG. 7 is a block diagram of an electronic device 701 in a network environment 700 according to an embodiment.
  • the electronic device 701 communicates with the electronic device 702 through a first network 798 (eg, a short-range wireless communication network) or a second network 799 . It may communicate with the electronic device 704 or the server 708 through (eg, a remote wireless communication network). According to an embodiment, the electronic device 701 may communicate with the electronic device 704 through the server 708 .
  • the electronic device 701 includes a processor 720 , a memory 730 , an input device 750 , a sound output device 755 , a display device 760 , an audio module 770 , and a sensor module ( 776 , interface 777 , haptic module 779 , camera module 780 , power management module 788 , battery 789 , communication module 790 , subscriber identification module 796 , or antenna module 797 . ) may be included. In some embodiments, at least one of these components (eg, the display device 760 or the camera module 780 ) may be omitted or one or more other components may be added to the electronic device 701 . In some embodiments, some of these components may be implemented as one integrated circuit. For example, the sensor module 776 (eg, a fingerprint sensor, an iris sensor, or an illuminance sensor) may be implemented while being embedded in the display device 760 (eg, a display).
  • the sensor module 776 eg, a fingerprint sensor, an
  • the processor 720 executes software (eg, a program 740) to execute at least one other component (eg, a hardware or software component) of the electronic device 701 connected to the processor 720 . It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or computation, the processor 720 converts commands or data received from other components (eg, the sensor module 776 or the communication module 790 ) to the volatile memory 732 . may load into the volatile memory 732 , process the commands or data stored in the volatile memory 732 , and store the resulting data in the non-volatile memory 734 .
  • software eg, a program 740
  • the processor 720 converts commands or data received from other components (eg, the sensor module 776 or the communication module 790 ) to the volatile memory 732 . may load into the volatile memory 732 , process the commands or data stored in the volatile memory 732 , and store the resulting data in the non-volatile memory 734 .
  • the processor 720 includes a main processor 721 (eg, a central processing unit or an application processor), and a co-processor 723 (eg, a graphics processing unit, an image signal processor) capable of operating independently or in conjunction with the main processor 721 (eg, a graphics processing unit or an image signal processor). , a sensor hub processor, or a communication processor). Additionally or alternatively, the auxiliary processor 723 may be configured to use less power than the main processor 721 or to be specialized for a designated function.
  • the coprocessor 723 may be implemented separately from or as part of the main processor 721 .
  • the coprocessor 723 may, for example, act on behalf of the main processor 721 while the main processor 721 is in an inactive (eg, sleep) state, or when the main processor 721 is active (eg, executing an application). ), together with the main processor 721, at least one of the components of the electronic device 701 (eg, the display device 760, the sensor module 776, or the communication module 790) It is possible to control at least some of the related functions or states.
  • the coprocessor 723 eg, image signal processor or communication processor
  • may be implemented as part of another functionally related component eg, camera module 780 or communication module 790 ). have.
  • the memory 730 may store various data used by at least one component (eg, the processor 720 or the sensor module 776 ) of the electronic device 701 .
  • the data may include, for example, input data or output data for software (eg, the program 740 ) and instructions related thereto.
  • the memory 730 may include a volatile memory 732 or a non-volatile memory 734 .
  • the program 740 may be stored as software in the memory 730 , and may include, for example, an operating system 742 , middleware 744 , or an application 746 .
  • the input device 750 may receive a command or data to be used by a component (eg, the processor 720 ) of the electronic device 701 from the outside (eg, a user) of the electronic device 701 .
  • the input device 750 may include, for example, a microphone, a mouse, a keyboard, or a digital pen (eg, a stylus pen).
  • the sound output device 755 may output a sound signal to the outside of the electronic device 701 .
  • the sound output device 755 may include, for example, a speaker or a receiver.
  • the speaker can be used for general purposes, such as multimedia playback or recording playback, and the receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.
  • the display device 760 may visually provide information to the outside (eg, a user) of the electronic device 701 .
  • the display device 760 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the corresponding device.
  • the display device 760 may include a touch circuitry configured to sense a touch or a sensor circuit (eg, a pressure sensor) configured to measure the intensity of a force generated by the touch. have.
  • the audio module 770 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 770 obtains a sound through the input device 750 or an external electronic device (eg, a sound output device 755 ) directly or wirelessly connected to the electronic device 701 . The sound may be output through the electronic device 702 (eg, a speaker or headphones).
  • an external electronic device eg, a sound output device 755
  • the sound may be output through the electronic device 702 (eg, a speaker or headphones).
  • the sensor module 776 detects an operating state (eg, power or temperature) of the electronic device 701 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the sensed state. can do.
  • the sensor module 776 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.
  • the interface 777 may support one or more designated protocols that may be used for the electronic device 701 to be directly or wirelessly connected to an external electronic device (eg, the electronic device 702 ).
  • the interface 777 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.
  • HDMI high definition multimedia interface
  • USB universal serial bus
  • SD card interface Secure Digital Card
  • connection terminal 778 may include a connector through which the electronic device 701 can be physically connected to an external electronic device (eg, the electronic device 702 ).
  • the connection terminal 778 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).
  • the haptic module 779 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense.
  • the haptic module 779 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
  • the camera module 780 may capture still images and moving images. According to one embodiment, the camera module 780 may include one or more lenses, image sensors, image signal processors, or flashes.
  • the power management module 788 may manage power supplied to the electronic device 701 .
  • the power management module 788 may be implemented as at least part of a power management integrated circuit (PMIC), for example.
  • PMIC power management integrated circuit
  • the battery 789 may supply power to at least one component of the electronic device 701 .
  • battery 789 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.
  • the communication module 790 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 701 and an external electronic device (eg, the electronic device 702, the electronic device 704, or the server 708). It can support establishment and communication through the established communication channel.
  • the communication module 790 may include one or more communication processors that operate independently of the processor 720 (eg, an application processor) and support direct (eg, wired) communication or wireless communication.
  • the communication module 790 is a wireless communication module 792 (eg, a cellular communication module, a short-range communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 794 (eg, : It may include a local area network (LAN) communication module, or a power line communication module).
  • a corresponding communication module is a first network 798 (eg, a short-range communication network such as Bluetooth, WiFi direct, or infrared data association (IrDA)) or a second network 799 (eg, a cellular network, the Internet, or It may communicate with an external electronic device via a computer network (eg, a telecommunication network such as a LAN or WAN).
  • a computer network eg, a telecommunication network such as a LAN or WAN.
  • the wireless communication module 792 uses the subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 796 within a communication network, such as the first network 798 or the second network 799 .
  • the electronic device 701 may be identified and authenticated.
  • the antenna module 797 may transmit or receive a signal or power to the outside (eg, an external electronic device).
  • the antenna module may include one antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern.
  • the antenna module 797 may include a plurality of antennas. In this case, at least one antenna suitable for a communication scheme used in a communication network such as the first network 798 or the second network 799 is connected from the plurality of antennas by, for example, the communication module 790 . can be selected. A signal or power may be transmitted or received between the communication module 790 and the external electronic device through the selected at least one antenna.
  • other components eg, RFIC
  • other than the radiator may be additionally formed as a part of the antenna module 797 .
  • peripheral devices eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)
  • GPIO general purpose input and output
  • SPI serial peripheral interface
  • MIPI mobile industry processor interface
  • the command or data may be transmitted or received between the electronic device 701 and the external electronic device 704 through the server 708 connected to the second network 799 .
  • Each of the electronic devices 702 and 704 may be the same or a different type of device from the electronic device 701 .
  • all or part of the operations performed by the electronic device 701 may be executed by one or more of the external electronic devices 702 , 704 , or 708 .
  • the electronic device 701 may instead of executing the function or service itself.
  • one or more external electronic devices may be requested to perform at least a part of the function or the service.
  • the one or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 701 .
  • the electronic device 701 may process the result as it is or additionally and provide it as at least a part of a response to the request.
  • cloud computing, distributed computing, or client-server computing technology may be used.
  • the electronic device may have various types of devices.
  • the electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device.
  • a portable communication device eg, a smart phone
  • a computer device e.g., a smart phone
  • a portable multimedia device e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a wearable device e.g., a smart bracelet
  • a home appliance device e.g., a home appliance
  • first”, “second”, or “first” or “second” may simply be used to distinguish the component from other components in question, and may refer to components in other aspects (e.g., importance or order) is not limited. that one (eg first) component is “coupled” or “connected” to another (eg, second) component with or without the terms “functionally” or “communicatively” When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.
  • module may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as, for example, logic, logic block, component, or circuit.
  • a module may be an integrally formed component or a minimum unit or a part of the component that performs one or more functions.
  • the module may be implemented in the form of an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • Various embodiments of the present document include one or more instructions stored in a storage medium (eg, internal memory 736 or external memory 738) readable by a machine (eg, electronic device 701). may be implemented as software (eg, a program 740) including
  • a processor eg, processor 720
  • a device eg, electronic device 701
  • the one or more instructions may include code generated by a compiler or code executable by an interpreter.
  • the device-readable storage medium may be provided in the form of a non-transitory storage medium.
  • 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.
  • a signal eg, electromagnetic wave
  • the method according to various embodiments disclosed in this document may be provided by being included in a computer program product.
  • Computer program products may be traded between sellers and buyers as commodities.
  • the computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or through an application store (eg Play Store TM ) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly, online between smartphones (eg: smartphones).
  • a part of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.
  • each component eg, a module or a program of the above-described components may include a singular or a plurality of entities.
  • one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added.
  • a plurality of components eg, a module or a program
  • the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. .
  • operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. or one or more other operations may be added.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Function (AREA)

Abstract

Un mode de réalisation de l'invention concerne un procédé de commande d'écho d'un dispositif électronique qui peut comprendre les opérations consistant à : acquérir un premier signal vocal reçu en provenance d'un dispositif externe par le biais d'un circuit de communication ; en utilisant le premier signal vocal, générer un premier signal de référence obtenu par l'amélioration du premier signal vocal ; générer un deuxième signal de référence obtenu par amplification du premier signal de référence ; émettre le deuxième signal de référence par le biais d'un haut-parleur du dispositif électronique ; acquérir un énoncé d'un utilisateur contenant le deuxième signal de référence, délivré à par le biais du haut-parleur, par le biais d'un microphone du dispositif électronique ; comparer un premier instant auquel le deuxième signal de référence délivré par le biais du haut-parleur est acquis par un compensateur de retard de trajet d'écho (EPD) par le biais du microphone, et un deuxième instant auquel le deuxième signal de référence est acquis par le compensateur d'EPD par le biais d'un trajet interne entre le haut-parleur et le compensateur d'EPD ; effectuer une suppression d'écho sur l'énoncé de l'utilisateur acquis par le microphone, en utilisant le premier signal de référence ou le deuxième signal de référence en fonction du résultat de la comparaison ; et transmettre l'énoncé, auquel a été appliquée la suppression d'écho, au dispositif externe par le biais du circuit de communication. Divers autres modes de réalisation présents dans la description sont également possibles.
PCT/KR2021/002381 2020-02-25 2021-02-25 Procédé et dispositif d'annulation d'écho WO2021172893A1 (fr)

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KR10-2020-0023189 2020-02-25

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WO2024080590A1 (fr) * 2022-10-14 2024-04-18 삼성전자주식회사 Dispositif électronique et procédé de détection d'erreur de signal

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JP2011066668A (ja) * 2009-09-17 2011-03-31 Brother Industries Ltd エコー除去装置、エコー除去方法、およびエコー除去装置のプログラム
KR20130043124A (ko) * 2010-06-01 2013-04-29 퀄컴 인코포레이티드 오디오 등화를 위한 시스템들, 방법들, 디바이스들, 장치, 및 컴퓨터 프로그램 제품들
KR20130084793A (ko) * 2012-01-18 2013-07-26 현대모비스 주식회사 에코처리 유닛을 구비한 핸즈프리 시스템
JP2015039093A (ja) * 2012-05-29 2015-02-26 株式会社東芝 エコーキャンセラおよびエコーキャンセル方法
KR101877022B1 (ko) * 2017-05-29 2018-07-10 에스케이 텔레콤주식회사 에코 제거를 위한 장치 및 그를 위한 컴퓨터 프로그램

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011066668A (ja) * 2009-09-17 2011-03-31 Brother Industries Ltd エコー除去装置、エコー除去方法、およびエコー除去装置のプログラム
KR20130043124A (ko) * 2010-06-01 2013-04-29 퀄컴 인코포레이티드 오디오 등화를 위한 시스템들, 방법들, 디바이스들, 장치, 및 컴퓨터 프로그램 제품들
KR20130084793A (ko) * 2012-01-18 2013-07-26 현대모비스 주식회사 에코처리 유닛을 구비한 핸즈프리 시스템
JP2015039093A (ja) * 2012-05-29 2015-02-26 株式会社東芝 エコーキャンセラおよびエコーキャンセル方法
KR101877022B1 (ko) * 2017-05-29 2018-07-10 에스케이 텔레콤주식회사 에코 제거를 위한 장치 및 그를 위한 컴퓨터 프로그램

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