WO2014015745A1 - Procédé de réduction de bruit et terminal - Google Patents

Procédé de réduction de bruit et terminal Download PDF

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Publication number
WO2014015745A1
WO2014015745A1 PCT/CN2013/079065 CN2013079065W WO2014015745A1 WO 2014015745 A1 WO2014015745 A1 WO 2014015745A1 CN 2013079065 W CN2013079065 W CN 2013079065W WO 2014015745 A1 WO2014015745 A1 WO 2014015745A1
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WO
WIPO (PCT)
Prior art keywords
audio signal
terminal
audio
recording
noise reduction
Prior art date
Application number
PCT/CN2013/079065
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English (en)
Chinese (zh)
Inventor
梅敬青
薛国栋
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华为终端有限公司
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Filing date
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Publication of WO2014015745A1 publication Critical patent/WO2014015745A1/fr

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation

Definitions

  • Noise reduction method and terminal The present application is filed on July 23, 2012, the Chinese Patent Office, the application number is 201210255773. The priority of the Chinese patent application entitled “Noise Reduction Method and Terminal” is incorporated by reference. In this application. TECHNICAL FIELD The present application relates to noise processing techniques, and more particularly to noise reduction methods and terminals. BACKGROUND OF THE INVENTION With the development of sound processing technology, terminals have higher and higher requirements for the quality of sounds that need to be processed, and noise reduction technology has emerged.
  • the current noise reduction technology mainly uses dual microphones to actively reduce noise, and through certain algorithms, the audio data received by one microphone (ie, the noise and the signal signal with weak signal strength) is received by the audio data of another microphone (ie, Noise signal and signal signal with strong signal strength) Perform noise reduction.
  • a noise reduction method including:
  • the first terminal starts to receive the first audio signal, and sends an audio recording start command to the second terminal, where the audio recording start command is used to instruct the second terminal to start recording the second audio signal generated by the second terminal;
  • the first terminal receives the recorded second audio signal sent by the second terminal, and performs noise reduction on the first audio signal by using the second audio signal.
  • the foregoing aspect, and any possible implementation manner further provide an implementation manner, before the first terminal starts receiving the first audio signal, the method further includes: performing, by the first terminal, the time synchronization with the second terminal ;
  • the audio recording start command includes a start time stamp, where the start time stamp is used to indicate a time when the second terminal records the second audio signal;
  • the audio recording end command includes an end time bird.
  • the end time stamp is used to indicate the time at which the second terminal records the end of the second audio signal.
  • the first terminal receiving the recorded second audio signal sent by the second terminal including: the first terminal Receiving, by the second terminal, the recorded second audio signal that is sent when determining that the second audio signal causes interference to the first audio signal.
  • the first audio signal is an audio signal received by the first terminal by a primary microphone; and the third audio signal is the first terminal The audio signal received by the auxiliary mic; before the first terminal uses the second audio signal to perform noise reduction on the first audio signal, the method further includes:
  • the first terminal obtains attenuation information of the second audio signal according to the third audio signal and the second audio signal;
  • the first terminal performs noise reduction on the first audio signal by using the second audio signal, and includes:
  • the first terminal performs noise reduction on the first audio signal by using the attenuation information of the second audio signal and the second audio signal.
  • a noise reduction method including:
  • the first terminal starts to receive the first audio signal, and sends an audio recording start command to the second terminal, where the audio recording start command is used to instruct the second terminal to start recording the second audio signal generated by the second terminal;
  • the first terminal sends the first audio signal to a server, so that the server performs noise reduction on the first audio signal by using the second audio signal.
  • the audio recording start command includes a start time bird, and the start time stamp is used to indicate a time when the second terminal records the second audio signal;
  • the audio recording end command includes an end time bird.
  • the end time stamp is used to indicate the time at which the second terminal records the end of the second audio signal.
  • the method before the first terminal uses the second audio signal to perform noise reduction on the first audio signal, the method further includes:
  • the second terminal receives, by the first terminal, a response message sent by the second terminal, where the response message is used to indicate that the first audio signal is not required to be noise-reduced by using the second audio signal, where the response message is
  • the second terminal sends the first terminal to the first terminal.
  • the first audio signal is an audio signal received by the first terminal by a primary microphone; and the third audio signal is the first terminal An audio signal received by the auxiliary microphone; the method further includes:
  • the server Receiving, by the first terminal, the third audio signal by using a secondary microphone, and transmitting the third audio signal to the server, so that the server obtains according to the third audio signal and the second audio signal Attenuating information of the second audio signal, and performing noise reduction on the first audio signal by using attenuation information of the second audio signal and the second audio signal.
  • a noise reduction method including:
  • the second terminal starts recording the second audio signal generated by the second terminal according to the audio recording start command
  • the second terminal ends recording the second audio signal according to the audio recording end command; Transmitting, by the second terminal, the second audio signal to the first terminal, to enable the first terminal to perform noise reduction on the first audio signal by using the second audio signal; or
  • the second terminal sends the second audio signal to the server, so that the server uses the second audio signal to perform noise reduction on the received first audio signal sent by the first terminal.
  • the method before the second terminal receives the audio recording start command sent by the first terminal, the method further includes: the second terminal and the first The terminal performs time synchronization;
  • the audio recording start command includes a start time bird, and the start time stamp is used to indicate a time when the second terminal records the second audio signal;
  • the audio recording end command includes an end time bird.
  • the end time stamp is used to indicate the time at which the second terminal records the end of the second audio signal.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, before the second terminal starts recording the second audio signal according to the audio recording start command, and further includes:
  • the response message is for indicating that the first audio signal does not need to be noise-reduced by the second audio signal.
  • the method further includes:
  • a terminal including:
  • a receiving unit configured to receive the first audio signal, and transmit the first audio signal to the processing unit
  • a sending unit configured to: when the receiving unit starts to receive the first audio signal, send an audio recording start command to the second terminal, where the audio recording start command is used to instruct the second terminal to start recording the second terminal to generate a second audio signal; and when the receiving unit ends receiving the first audio signal, sending an audio recording end command to the second terminal, the audio recording end command, used to instruct the second terminal to end recording The second audio signal;
  • the receiving unit is further configured to receive the recorded second audio signal sent by the second terminal, and transmit the second audio signal to the processing unit;
  • the processing unit is configured to perform noise reduction on the first audio signal by using the second audio signal.
  • the terminal further includes a synchronization unit, where
  • the audio recording start command includes a start time bird, and the start time stamp is used to indicate a time when the second terminal records the second audio signal;
  • the audio recording end command includes an end time bird.
  • the end time stamp is used to indicate the time at which the second terminal records the end of the second audio signal.
  • the first audio signal is an audio signal received by the first terminal by a primary microphone; and the third audio signal is a The audio signal received by the auxiliary microphone;
  • the receiving unit is also used for
  • the processing unit is also used for
  • the processing unit is specifically used for
  • the first audio signal is noise-reduced by the attenuation information of the second audio signal and the second audio signal.
  • a terminal including:
  • a receiving unit configured to receive the first audio signal, and transmit the first audio signal to the sending unit
  • the sending unit is configured to: when the receiving unit starts to receive the first audio signal, send an audio recording start command to the second terminal, where the audio recording start command is used to instruct the second terminal to start recording the second a second audio signal generated by the terminal; and when the receiving unit ends receiving the first audio signal, sending an audio recording end command to the second terminal, where the audio recording end command is used to indicate the second terminal End recording the second audio signal;
  • the sending unit is further configured to send the first audio signal to a server, so that the server uses the second audio signal to perform noise reduction on the first audio signal.
  • the terminal further includes a synchronization unit, where
  • the audio recording start command includes a start time bird, and the start time stamp is used to indicate a time when the second terminal records the second audio signal;
  • the audio recording end command includes an end time bird.
  • the end time stamp is used to indicate the time at which the second terminal records the end of the second audio signal.
  • the second terminal receives a response message sent by the second terminal, where the response message is used to indicate that the first audio signal is not required to be denoised by using the second audio signal, where the response message is determined by the second terminal
  • the second terminal sends the interference to the first terminal.
  • the aspect as described above and any possible implementation manner further provide an implementation manner, where
  • the first audio signal is an audio signal received by the first terminal through the primary microphone;
  • the third audio signal is an audio signal received by the receiving unit through the auxiliary microphone;
  • the receiving unit is also used for
  • the processing unit is also used for controlling
  • the processing unit is specifically used for
  • the first audio signal is noise-reduced by the attenuation information of the second audio signal and the second audio signal.
  • a terminal including:
  • a receiving unit configured to receive an audio recording start command sent by the first terminal, where the audio recording start command is sent to the terminal when the first terminal starts receiving the first audio signal, and the audio recording start command is transmitted Give the processing unit;
  • the processing unit is configured to start recording a second audio signal generated by the terminal according to the audio recording start command;
  • the receiving unit is further configured to receive an audio recording end command sent by the first terminal, and transmit the audio recording end command to the processing unit, where the audio recording end command is that the first terminal ends receiving Sending the first audio signal to the terminal;
  • the processing unit is further configured to end recording the second audio signal according to the audio recording end command, and transmitting the second audio signal to the sending unit;
  • the sending unit is configured to
  • the terminal further includes a synchronization unit, where
  • the audio record start command includes a start time bird, the start time stamp is used to indicate Determining, by the terminal, a time at which the second audio signal starts;
  • the audio recording end command includes an end time bird.
  • the end time stamp is used to indicate the time at which the terminal records the end of the second audio signal.
  • the terminal When the terminal does not cause interference to the first terminal, determining to not perform an operation of starting to record the second audio signal according to the audio recording start command, and sending a response message to the first terminal, the response message Instructing that the first audio signal is not required to be noise reduced using the second audio signal.
  • the above-mentioned aspect and any possible implementation manner further provide an implementation manner, where the first audio signal is an audio signal received by the first terminal through a primary microphone;
  • the processing unit is also used for controlling
  • the sending unit is also used for
  • an embodiment of the present application when the first terminal starts receiving the first audio signal, sends an audio recording start command to the second terminal, where the audio recording start command is used to indicate the second terminal. And starting to record the second audio signal generated by the second terminal, and when the first terminal ends receiving the first audio signal, sending an audio recording end command to the second terminal, where the audio recording ends the command, Instructing the second terminal to end recording the second audio signal, so that the first terminal receives the recorded second audio signal sent by the second terminal, and can utilize the second audio signal pair
  • the first audio signal is noise-reduced, The problem of suppressing noise in the prior art while suppressing the speech signal to a certain extent can be avoided, thereby improving the sound quality and the reliability of noise reduction after noise reduction.
  • the audio recording start command is sent to the second terminal, where the audio recording start command is used to indicate the second
  • the terminal starts to record the second audio signal generated by the second terminal, and when the first terminal ends receiving the first audio signal, sends an audio recording end command to the second terminal, where the audio recording ends the command, Instructing the second terminal to end recording the second audio signal, the first terminal further transmitting the first audio signal to a server, so that the server can use the second audio signal to the first
  • the noise reduction of an audio signal can avoid the problem of suppressing noise and suppressing the speech signal in the prior art, thereby improving the sound quality and the reliability of noise reduction after noise reduction.
  • the second terminal receives an audio recording start command sent by the first terminal, and starts recording the second audio generated by the second terminal according to the audio recording start command.
  • a signal the audio recording start command is sent to the second terminal when the first terminal starts receiving the first audio signal
  • the second terminal receives the audio recording end command sent by the first terminal, and according to The audio recording end command ends recording the second audio signal
  • the audio recording end command is sent to the second terminal when the first terminal ends receiving the first audio signal, and the second terminal
  • And transmitting the second audio signal to the first terminal or the server so that the first terminal can perform noise reduction on the first audio signal by using the second audio signal, or the server can utilize the Decoding, by the second audio signal, the received first audio signal sent by the first terminal, which can be avoided
  • the noise is suppressed and the speech signal is also suppressed to some extent, thereby improving the sound quality and the reliability of noise reduction after noise reduction.
  • 1 is a schematic flowchart of a noise reduction method according to an embodiment of the present application
  • 2 is a schematic flow chart of a noise reduction method provided by another embodiment of the present application
  • FIG. 3 is a schematic flow chart of a noise reduction method provided by another embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a terminal provided by another embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a terminal provided by another embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a terminal provided by another embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a terminal provided by another embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a terminal provided by another embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a terminal provided by another embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • FIG. 1 is a schematic flowchart of a noise reduction method according to an embodiment of the present disclosure, as shown in FIG. 1 .
  • the method includes:
  • the first terminal starts to receive the first audio signal, and sends an audio recording start command to the second terminal, where the audio recording start command is used to instruct the second terminal to start recording the second audio generated by the second terminal. signal.
  • the first terminal receives the recorded second audio message sent by the second terminal. No. the first audio signal is noise-reduced by the second audio signal.
  • the first audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording.
  • the first audio signal may include a signal, that is, a noise when the second audio signal reaches the first terminal through a transmission medium. Then, in the first frame, the first terminal may perform signal analysis on the received first audio signal, and after determining, by the signal analysis, determining that the first audio signal includes the noise, The second audio signal is subjected to noise reduction (ie, noise reduction related operation) with the first audio signal to reduce the noise included in the first audio signal, thereby enabling noise reduction.
  • noise reduction ie, noise reduction related operation
  • the first audio signal may not include a signal, that is, a noise when the second audio signal reaches the first terminal through a transmission medium. Then, in the first frame, the first terminal may perform signal analysis on the received first audio signal, and after determining the signal, determining that the first audio signal does not include the noise, Decoding the second audio signal with the first audio signal (ie, a noise reduction correlation operation), since the noise is not included in the first audio signal, the noise reduction performed by the first terminal is not Any effect is generated on the first audio signal to continue to maintain the first audio signal unaffected by the second audio signal.
  • the first terminal before the first terminal starts to receive the first audio signal, the first terminal may further perform time synchronization with the second terminal.
  • the audio recording start command may further include a start timestamp, where the start timestamp is used to indicate a time when the second terminal records the second audio signal; the audio record end command The end time stamp may also be further included to indicate the time at which the second terminal records the end of the second audio signal.
  • the first terminal may receive the second terminal, determining that the second audio signal interferes with the first audio signal.
  • the second audio signal that has been recorded is transmitted.
  • the second terminal may specifically determine whether the second terminal causes interference to the first terminal; when the second terminal causes interference to the first terminal, determining to perform according to the The audio recording start command starts the operation of recording the second audio signal; when the second terminal does not cause interference to the first terminal, determining to not perform the recording of the second audio signal according to the audio recording start command And transmitting a response message to the first terminal, the response message being used to indicate that the first audio signal is not required to be noise-reduced by the second audio signal.
  • the second terminal may specifically determine whether the second terminal causes interference to the first terminal by using a somatosensory identification technology or a positioning technology. Specifically, the second terminal may specifically determine, by using a somatosensory identification technology or a positioning technology, whether a distance between the second terminal and the first terminal is less than a preset distance threshold, if the distance is less than or equal to the distance The second terminal may determine to perform an operation of recording the second audio signal according to the audio recording start command; if the distance is greater than the distance threshold, the second terminal may determine not to perform the The audio recording start command starts the operation of recording the second audio signal, and transmits the response message to the first terminal.
  • the first terminal includes two microphones, a primary microphone and a secondary microphone.
  • the primary microphone is disposed on a front side of the first terminal, for example, with a user.
  • the secondary microphone is placed on the back of the first terminal, for example, where it is far from the user's organ.
  • the first audio signal is an audio signal received by the first terminal through a primary microphone
  • the third audio signal is an audio signal received by the first terminal through a secondary microphone.
  • the first terminal then obtains attenuation information of the second audio signal based on the third audio signal and the second audio signal.
  • the third audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording. Since the location of the primary mic and the secondary mic are different, if the organ of the user is closer to the primary mic, the voice data for voice control and the voice data of the user's voice call included in the first audio signal are included. Or the signal strength of the voice data for voice recording, the voice strength of the voice data for voice control, the voice data of the user voice call, or the voice data for voice recording included in the third audio signal. smaller.
  • the first terminal may specifically perform noise reduction on the first audio signal by using the attenuation information of the second audio signal and the second audio signal.
  • the audio recording start command is sent to the second terminal, where the audio recording start command is used to instruct the second terminal to start recording the second terminal.
  • Second audio signal and the first terminal ends receiving
  • the audio recording end command is sent to the second terminal, where the audio recording end command is used to instruct the second terminal to end recording the second audio signal, so that the first terminal receives
  • the second audio signal that is recorded by the second terminal, and capable of performing noise reduction on the first audio signal by using the second audio signal can avoid the noise suppression in the prior art
  • the problem of the speech signal being suppressed is also suppressed, thereby improving the sound quality and the reliability of noise reduction after noise reduction.
  • FIG. 2 is a schematic flowchart of a noise reduction method according to another embodiment of the present application, as shown in FIG. 2 .
  • the method includes:
  • the first terminal starts to receive the first audio signal, and sends an audio recording start command to the second terminal, where the audio recording start command is used to instruct the second terminal to start recording the second audio generated by the second terminal. signal.
  • the first terminal sends the first audio signal to a server, so that the server uses the second audio signal to perform noise reduction on the first audio signal.
  • the second audio signal is sent to the server by the second terminal after the end of recording the second audio signal.
  • the first audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording.
  • the first audio signal may include a signal, that is, a noise when the second audio signal reaches the first terminal through a transmission medium.
  • the server may perform signal analysis on the received first audio signal, and after determining, by the signal analysis, determining that the first audio signal includes the noise, the second audio signal may be utilized.
  • the first audio signal is subjected to noise reduction (i.e., noise reduction correlation operation) to reduce the noise contained in the first audio signal, thereby enabling noise reduction.
  • the first audio signal may not include a signal, that is, a noise when the second audio signal reaches the first terminal through a transmission medium.
  • the server may perform signal analysis on the received first audio signal, and after determining the signal, determining that the first audio signal does not include the noise, may be utilized.
  • the second audio signal performs noise reduction (ie, noise reduction correlation operation) with the first audio signal, and since the noise is not included in the first audio signal, the noise reduction performed by the server does not Any effect is generated on the first audio signal to continue to maintain the first audio signal unaffected by the second audio signal.
  • the first terminal before the first terminal starts to receive the first audio signal, the first terminal may further perform time synchronization with the second terminal.
  • the audio recording start command may further include a start timestamp, where the start timestamp is used to indicate a time when the second terminal records the second audio signal; the audio record end command The end time stamp may also be further included to indicate the time at which the second terminal records the end of the second audio signal.
  • the first terminal includes two microphones, a primary microphone and a secondary microphone.
  • the primary microphone is disposed on a front side of the first terminal, for example, with a user.
  • the secondary microphone is placed on the back of the first terminal, for example, where it is far from the user's organ.
  • the first audio signal is an audio signal received by the first terminal through a primary microphone
  • the third audio signal is an audio signal received by the first terminal through a secondary microphone.
  • the first terminal may send the third audio signal to the server, so that the server obtains the attenuation information of the second audio signal according to the third audio signal and the second audio signal. And using the second audio signal and the attenuation information of the second audio signal to perform noise reduction on the first audio signal.
  • the third audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording. Since the location of the primary mic and the secondary mic are different, if the organ of the user is closer to the primary mic, the voice data for voice control and the voice data of the user's voice call included in the first audio signal are included. Or the signal strength of the voice data for voice recording, the voice strength of the voice data for voice control, the voice data of the user voice call, or the voice data for voice recording included in the third audio signal. smaller.
  • the audio recording start command is sent to the second terminal, where the audio recording start command is used to instruct the second terminal to start recording the second terminal.
  • a second audio signal and when the first terminal ends receiving the first audio signal, sending an audio recording end command to the second terminal, the audio recording ends
  • the first terminal further sends the first audio signal to a server, so that the server can utilize the second audio signal pair
  • the noise reduction of the first audio signal can avoid the problem of suppressing noise and suppressing the speech signal in the prior art, thereby improving the sound quality and the reliability of noise reduction after noise reduction.
  • FIG. 3 is a schematic flowchart of a noise reduction method according to another embodiment of the present application, as shown in FIG. 3. The method includes:
  • the second terminal receives an audio recording start command sent by the first terminal, where the audio recording start command is sent to the second terminal when the first terminal starts to receive the first audio signal.
  • the second terminal starts recording a second audio signal generated by the second terminal according to the audio recording start command.
  • the second terminal receives an audio recording end command sent by the first terminal, where the audio recording end command is sent to the second terminal when the first terminal ends receiving the first audio signal.
  • the second terminal ends recording the second audio signal according to the audio recording end command.
  • the second terminal sends the second audio signal to the first terminal, so that the first terminal performs noise reduction on the first audio signal by using the second audio signal.
  • the second terminal sends the second audio signal to the server, so that the server uses the second audio signal to perform noise reduction on the received first audio signal sent by the first terminal.
  • the first audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording.
  • the first audio signal may include a signal, that is, a noise when the second audio signal reaches the first terminal through a transmission medium. Then, the first terminal or the server may perform signal analysis on the received first audio signal, and after determining, by using the signal, determining that the first audio signal includes the noise, The second audio signal is subjected to noise reduction (ie, noise reduction related operation) with the first audio signal to reduce the noise included in the first audio signal, thereby enabling noise reduction.
  • the first audio signal may not include a signal, that is, a noise when the second audio signal reaches the first terminal through a transmission medium.
  • the first terminal or the server may perform signal analysis on the received first audio signal, and after determining, after the signal analysis, determining that the first audio signal does not include the noise,
  • the second audio signal performs noise reduction (ie, noise reduction related operation) with the first audio signal, and the first terminal or the server performs the lowering because the noise is not included in the first audio signal. Noise does not have any effect on the first audio signal to continue to maintain the first audio signal unaffected by the second audio signal.
  • the second terminal may further perform time synchronization with the first terminal.
  • the audio recording start command may further include a start timestamp, where the start timestamp is used to indicate a time when the second terminal records the second audio signal; the audio record end command The end time stamp may also be further included to indicate the time at which the second terminal records the end of the second audio signal.
  • the second terminal may further determine the Whether the second terminal causes interference to the first terminal, when the second terminal causes interference to the first terminal, the second terminal determines to perform to start recording the second audio signal according to the audio recording start command.
  • the operation of the second terminal is not performed when the second terminal does not cause interference to the first terminal, and the operation of starting to record the second audio signal according to the audio recording start command is performed
  • a terminal or the server sends a response message, the response message is used to indicate that the first audio signal does not need to be noise-reduced by the second audio signal.
  • the second terminal may specifically determine whether the second terminal causes interference to the first terminal by using a somatosensory identification technology or a positioning technology. Specifically, the second terminal may specifically determine, by using a somatosensory identification technology or a positioning technology, whether a distance between the second terminal and the first terminal is less than a preset distance threshold, if the distance is less than or equal to the distance The second terminal may determine to perform an operation of recording the second audio signal according to the audio recording start command; if the distance is greater than the distance threshold, the second terminal may determine not to perform the The audio recording start command starts the operation of recording the second audio signal, and to the first terminal Send the response message.
  • the second terminal may further obtain the attenuation of the second audio signal according to the distance between the second terminal and the first terminal. Information; then, the second terminal may send the attenuation information of the second audio signal to the first terminal, so that the first terminal utilizes the second audio signal and the second audio signal Attenuating information denoising the first audio signal or the second terminal may send attenuation information of the second audio signal to the server, such that the server utilizes the second audio signal and the The attenuation information of the second audio signal denoises the received first audio signal sent by the first terminal.
  • the second terminal may specifically determine a distance between the second terminal and the first terminal by using a somatosensory recognition technology or a positioning technology, and obtain attenuation information of the second audio signal according to the distance.
  • the second terminal receives the audio recording start command sent by the first terminal, and starts recording the second audio signal generated by the second terminal according to the audio recording start command, where the audio recording start command is
  • the first terminal starts to receive the first audio signal
  • the second terminal receives the audio recording end command sent by the first terminal, and ends the recording according to the audio recording end command.
  • the second audio signal, the audio recording end command is sent to the second terminal when the first terminal ends receiving the first audio signal
  • the second terminal further sends the first terminal or the server Transmitting the second audio signal to enable the first terminal to perform noise reduction on the first audio signal by using the second audio signal, or the server can utilize the second audio signal to receive the received Decoding the first audio signal sent by the first terminal to avoid noise suppression in the prior art.
  • the voice signal is also some question suppression thereby improving the reliability of voice quality and noise reduction after noise reduction.
  • FIG. 4 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • the terminal in this embodiment may include a receiving unit 41, a sending unit 42, and a processing unit 43.
  • the receiving unit 41 is configured to receive the first audio signal, and transmit the first audio signal to the processing unit 43.
  • the sending unit 42 is configured to: when the receiving unit 41 starts receiving the first audio signal, to the The second terminal sends an audio recording start command, the audio recording start command is used to instruct the second terminal to start recording the second audio signal generated by the second terminal; and the receiving unit 41 ends receiving the first And the audio signal ending command is sent to the second terminal, where the audio recording end command is used to instruct the second terminal to end recording the second audio signal; the receiving unit 41 is further configured to receive The second audio signal that is recorded by the second terminal, and the second audio signal is transmitted to the processing unit 43; the processing unit 43 is configured to use the second audio signal pair The first audio signal is described for noise reduction.
  • the first audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording.
  • the terminal provided in this embodiment may further include a synchronization unit 51, configured to start receiving the first audio signal at the receiving unit 41. Previously, time synchronization was performed with the second terminal.
  • the audio recording start command may further include a start timestamp, where the start timestamp is used to indicate a time when the second terminal records the second audio signal; the audio record end command The end time stamp may also be further included to indicate the time at which the second terminal records the end of the second audio signal.
  • the receiving unit 41 may further receive a response message sent by the second terminal, where the response message is used to indicate that the second audio does not need to be utilized.
  • the signal is used to perform noise reduction on the first audio signal, and the response message is sent to the first terminal when the second terminal determines that the second terminal does not cause interference to the first terminal.
  • the first audio signal is an audio signal received by the receiving unit 41 by a primary microphone; and the third audio signal is received by the receiving unit 41 by a secondary microphone.
  • the receiving unit 41 may further receive the third audio signal through the auxiliary microphone, and transmit the third audio signal to the processing unit 43; correspondingly, the processing unit 43 may further According to the third audio signal and the The second audio signal obtains attenuation information of the second audio signal.
  • the processing unit 41 may further receive the third audio signal through the auxiliary microphone, and transmit the third audio signal to the processing unit 43; correspondingly, the processing unit 43 may further According to the third audio signal and the The second audio signal obtains attenuation information of the second audio signal.
  • the processing unit 41 may further receive the third audio signal through the auxiliary microphone, and transmit the third audio signal to the processing unit 43; correspondingly, the processing unit 43 may further According to the third audio signal and the The second audio signal obtains attenuation information of the second audio signal.
  • the processing unit 41 may further receive the third audio signal through the auxiliary microphone
  • the second audio signal and the attenuation information of the second audio signal may be used to perform noise reduction (ie, noise reduction correlation operation) on the first audio signal to reduce inclusion in the first audio signal.
  • noise reduction ie, noise reduction correlation operation
  • the noise is such that noise reduction can be achieved.
  • the third audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording. Since the location of the primary mic and the secondary mic are different, if the organ of the user is closer to the primary mic, the voice data for voice control and the voice data of the user's voice call included in the first audio signal are included. Or the signal strength of the voice data for voice recording, the voice strength of the voice data for voice control, the voice data of the user voice call, or the voice data for voice recording included in the third audio signal. smaller.
  • the terminal sends an audio recording start command to the second terminal by the sending unit when the receiving unit starts to receive the first audio signal, where the audio recording start command is used to instruct the second terminal to start recording the first a second audio signal generated by the second terminal, and the transmitting unit, when the receiving unit ends receiving the first audio signal, sending an audio recording end command to the second terminal, where the audio recording end command is used Instructing the second terminal to end recording the second audio signal, and receiving, by the receiving unit, the recorded second audio signal sent by the second terminal, so that the processing unit can utilize the second audio signal Denoising the first audio signal can avoid the problem of suppressing noise and suppressing the speech signal in the prior art, thereby improving sound quality and noise reduction after noise reduction. Sex.
  • FIG. 6 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • the terminal in this embodiment may include a receiving unit 61 and a sending unit 62.
  • the receiving unit 61 is configured to receive the first audio signal, and transmit the first audio signal to the sending unit 62.
  • the sending unit 62 is configured to: when the receiving unit 61 starts receiving the first audio signal, The second terminal sends an audio recording start command, where the audio recording start command is used to instruct the second terminal to start recording the second audio signal generated by the second terminal; and the receiving unit 61 ends receiving the And the first audio signal, the audio recording end command is sent to the second terminal, where the audio recording end command is used to instruct the second terminal to end recording the second audio signal; Transmitting the first audio signal to a server to cause the server to perform noise reduction on the first audio signal using the second audio signal.
  • the second audio signal is that the second terminal ends recording the second audio signal. Then sent to the server.
  • the first audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording.
  • the terminal provided in this embodiment may further include a synchronization unit 71, configured to start receiving the first audio signal at the receiving unit 61. Previously, time synchronization was performed with the second terminal.
  • the audio recording start command may further include a start timestamp, where the start timestamp is used to indicate a time when the second terminal records the second audio signal; the audio record end command The end time stamp may also be further included to indicate the time at which the second terminal records the end of the second audio signal.
  • the terminal includes two microphones, a primary microphone and a secondary microphone.
  • the primary microphone is disposed on a front side of the terminal, for example, closer to a user's organ.
  • the place where the auxiliary microphone is placed on the back of the terminal, for example, is far from the user's organ.
  • the first audio signal is an audio signal received by the receiving unit 61 through a primary microphone
  • the third audio signal is an audio signal received by the receiving unit 61 through a secondary microphone; the receiving unit 61 may further receive through the auxiliary microphone. a third audio signal, and transmitting the third audio signal to the transmitting unit 62.
  • the sending unit 62 may further send the third audio signal to the server, so that the server is according to the third And obtaining, by the audio signal and the second audio signal, attenuation information of the second audio signal, and performing noise reduction on the first audio signal by using attenuation information of the second audio signal and the second audio signal .
  • the third audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording. Since the location of the primary mic and the secondary mic are different, if the organ of the user is closer to the primary mic, the voice data for voice control and the voice data of the user's voice call included in the first audio signal are included. Or the signal strength of the voice data for voice recording, the voice strength of the voice data for voice control, the voice data of the user voice call, or the voice data for voice recording included in the third audio signal. smaller.
  • the terminal sends an audio recording start command to the second terminal by the sending unit when the receiving unit starts to receive the first audio signal, where the audio recording start command is used to instruct the second terminal to start recording the first a second audio signal generated by the second terminal, and the transmitting unit is And when the receiving unit ends receiving the first audio signal, sending an audio recording end command to the second terminal, where the audio recording end command is used to instruct the second terminal to end recording the second audio signal, And transmitting, by the sending unit, the first audio signal to the server, so that the server can perform noise reduction on the first audio signal by using the second audio signal, where the second audio signal is After the second terminal ends the recording of the second audio signal, the second terminal sends the signal to the server, which can avoid the problem of suppressing the noise and suppressing the voice signal in the prior art, thereby improving the noise reduction. Sound quality and reliability of noise reduction.
  • FIG. 8 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • the terminal in this embodiment may include a receiving unit 81, a processing unit 82, and a sending unit 83.
  • the receiving unit 81 is configured to receive an audio recording start command sent by the first terminal, where the audio recording start command is sent to the terminal when the first terminal starts receiving the first audio signal, and the audio recording is performed.
  • the start command is transmitted to the processing unit 82.
  • the processing unit 82 is configured to start recording the second audio signal generated by the terminal according to the audio recording start command.
  • the receiving unit 81 is further configured to receive the first An audio recording end command sent by the terminal, and transmitting the audio recording end command to the processing unit 82, where the audio recording end command is sent to the terminal when the first terminal ends receiving the first audio signal
  • the processing unit 82 is further configured to end recording the second audio signal according to the audio recording end command, and transmitting the second audio signal to the sending unit 83; the sending unit 83, configured to Transmitting, by the first terminal, the second audio signal, so that the first terminal uses the second audio signal to An audio signal noise reduction; or send the second audio signal to the server, so that said second server using the received audio signal to the first terminal transmits a first audio signal noise reduction.
  • the first audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording.
  • the terminal provided in this embodiment may further include a synchronization unit 91, configured to receive, by the receiving unit 81, the first terminal, The time synchronization with the first terminal is performed before the audio recording start command.
  • a synchronization unit 91 configured to receive, by the receiving unit 81, the first terminal, The time synchronization with the first terminal is performed before the audio recording start command.
  • the audio recording start command may further include a start time stamp, where the start time stamp is used to indicate that the terminal records the start time of the second audio signal;
  • the recording end command may further include an end time bird ending time stamp for instructing the terminal to record the time at which the second audio signal ends.
  • the processing unit 82 may further determine whether the terminal causes the first terminal to be dry 4 when the terminal interferes with the first terminal. Determining an operation of starting to record the second audio signal according to the audio recording start command; when the terminal does not cause interference to the first terminal, determining not to perform the recording according to the audio recording start command The operation of the second audio signal, and generating a response message, transmitting the response message to the transmitting unit 83, the response message indicating that the first audio signal need not be denoised by the second audio signal.
  • the sending unit 83 can send the response message to the first terminal or the server.
  • the processing unit 82 may further obtain, according to a distance between the terminal and the first terminal, attenuation information of the second audio signal, where And transmitting the attenuation information of the second audio signal to the sending unit 83; correspondingly, the sending unit 83 may send the attenuation information of the second audio signal to the first terminal, so that the The first terminal denoises the first audio signal by using the attenuation information of the second audio signal and the second audio signal or transmits attenuation information of the second audio signal to the server, so that the The server uses the second audio signal and the attenuation information of the second audio signal to perform noise reduction on the received first audio signal sent by the first terminal.
  • the terminal receives the audio recording start command sent by the first terminal by using the receiving unit, and the processing unit starts to record the second audio signal generated by the terminal according to the audio recording start command, where the audio recording start command is started.
  • the second audio signal to enable the first terminal to perform noise reduction on the first audio signal using the second audio signal, or the server is capable of utilizing the second audio signal to receive the
  • the first audio signal sent by the first terminal performs noise reduction, which can avoid the noise in the prior art.
  • FIG. 10 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure. As shown in FIG. 10, the terminal in this embodiment may include a microphone 1001, a transmitter 1002, a receiver 1003, and one or more processors 1004.
  • the microphone 1001 is configured to receive a first audio signal and send the signal to the one or more processors 1004;
  • the one or more processors 1004 are configured to generate an audio recording start command when the microphone 1001 starts receiving the first audio signal, and send the audio recording start command to the transmitter 1002 to receive the microphone 1001; And generating an audio recording end command, and transmitting to the transmitter 1002; receiving the second audio signal received by the receiver 1003, and using the second audio signal to the first audio
  • the signal is noise-reduced
  • the audio recording start command is configured to instruct the second terminal to start recording the second audio signal generated by the second terminal, and the audio recording end command is used to instruct the second terminal to end recording the second audio signal;
  • the transmitter 1002 is configured to send, according to an instruction of the one or more processors, the audio recording start command and the audio recording end command to the second terminal;
  • the receiver 1003 is configured to receive the recorded second audio signal sent by the second terminal, and send the signal to the processor 1004.
  • the above transmitter and receiver may specifically be a radio frequency unit or a WiFi module.
  • the first audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording.
  • the processor 1004 may further perform time synchronization with the second terminal before the microphone 1001 starts receiving the first audio signal.
  • the audio recording start command may further include a start timestamp, where the start timestamp is used to indicate a time when the second terminal records the second audio signal; the audio record end command The end time stamp may also be further included to indicate the time at which the second terminal records the end of the second audio signal.
  • the receiver 1003 may receive, by the second terminal, a recorded record that is sent when the second terminal determines that the second audio signal causes interference to the first audio signal.
  • the microphone includes two microphones, a primary microphone and a secondary microphone.
  • the primary microphone is disposed on a front side of the terminal, for example, closer to a user's organ. The place where the auxiliary microphone is placed on the back of the terminal, for example, is far from the user's organ.
  • the first audio signal is an audio signal received by the primary microphone
  • the third audio signal is an audio signal received by the secondary microphone.
  • the primary microphone is configured to receive the first audio signal and send the signal to the one or more processors 1004;
  • the secondary microphone is configured to receive the third audio signal, and send the The one or more processors 1004.
  • the processor 1004 may further obtain attenuation information of the second audio signal according to the third audio signal and the second audio signal.
  • the processor 1004 may specifically perform noise reduction (ie, noise reduction correlation operation) on the first audio signal by using attenuation information of the second audio signal and the second audio signal to reduce the The noise contained in the first audio signal enables noise reduction.
  • noise reduction ie, noise reduction correlation operation
  • the third audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording. Since the location of the primary mic and the secondary mic are different, if the organ of the user is closer to the primary mic, the voice data for voice control and the voice data of the user's voice call included in the first audio signal are included. Or the signal strength of the voice data for voice recording, the voice strength of the voice data for voice control, the voice data of the user voice call, or the voice data for voice recording included in the third audio signal. smaller.
  • the terminal provided in this embodiment may further include a memory for storing information received or processed by other units or modules.
  • the terminal generates an audio recording start command by the processor when the microphone starts receiving the first audio signal, and sends the audio recording start command to the transmitter, and generates an audio when the microphone ends receiving the first audio signal. Recording an end command, and sending it to the sender, the audio recording start command for instructing the second terminal to start recording the second audio signal generated by the second terminal, the audio recording end command, Instructing the second terminal to end recording the second audio signal, and receiving, by the receiver, the recorded second audio signal sent by the second terminal, so that the processor can utilize the second audio
  • the signal is denoised by the signal, which can avoid the problem of suppressing the noise and suppressing the speech signal in the prior art, thereby improving the sound quality and noise reduction after noise reduction. reliability.
  • FIG. 11 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure, as shown in FIG.
  • the terminal of this embodiment may include a microphone 1101, a transmitter 1102, and one or more processors 1103.
  • the microphone 1101 is configured to receive a first audio signal and send the signal to the one or more processors 1103;
  • the one or more processors 1103> are configured to generate an audio recording start command when the microphone 1101 starts receiving the first audio signal, and send it to the transmitter 1 102 for transmission; ending at the microphone 1101 Receiving the first audio signal, generating an audio recording end command, and transmitting it to the transmitter 1 102; and transmitting the first audio signal to the transmitter 1 102;
  • the audio recording start command is configured to instruct the second terminal to start recording the second audio signal generated by the second terminal, and the audio recording end command is used to instruct the second terminal to end recording the second audio signal;
  • the transmitter 1102 is configured to send the audio recording start command and the audio recording end command to the second terminal according to an instruction of the one or more processors, and send the first audio to a server And causing the server to perform noise reduction on the first audio signal by using the second audio signal.
  • the above transmitter may specifically be a radio frequency unit or a WiFi module.
  • the first audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording.
  • the second audio signal is sent to the server by the second terminal after the end of recording the second audio signal.
  • the first audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording.
  • the processor 1103 may further perform time synchronization with the second terminal before the microphone 1101 starts receiving the first audio signal.
  • the audio recording start command may further include a start timestamp, where the start timestamp is used to indicate a time when the second terminal records the second audio signal; the audio record end command The end time stamp can also be further included in the end time The second terminal is recorded to record the time when the second audio signal ends.
  • the microphone includes two microphones, a primary microphone and a secondary microphone.
  • the primary microphone is disposed on a front side of the terminal, for example, closer to a user's organ.
  • the place where the auxiliary microphone is placed on the back of the terminal, for example, is far from the user's organ.
  • the first audio signal is an audio signal received by the primary microphone
  • the third audio signal is an audio signal received by the secondary microphone. That is, the primary microphone is configured to receive the first audio signal and send the signal to the one or more processors 1103; the secondary microphone is configured to receive the third audio signal, and send the
  • the one or more processors iioa may further transmit the third audio signal to the transmitter 1 102 for transmission.
  • the transmitter 1102 may further send the third audio signal to the server according to an instruction of the one or more processors, so that the server according to the third audio signal and the Deriving the second audio signal to obtain attenuation information of the second audio signal.
  • the server may specifically perform noise reduction (ie, noise reduction correlation operation) on the first audio signal by using attenuation information of the second audio signal and the second audio signal to reduce the first audio.
  • noise reduction ie, noise reduction correlation operation
  • the third audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording. Since the location of the primary mic and the secondary mic are different, if the organ of the user is closer to the primary mic, the voice data for voice control and the voice data of the user's voice call included in the first audio signal are included. Or the signal strength of the voice data for voice recording, the voice strength of the voice data for voice control, the voice data of the user voice call, or the voice data for voice recording included in the third audio signal. smaller.
  • the terminal provided in this embodiment may further include a memory for storing information received or processed by other units or modules.
  • the terminal generates an audio recording start command by the processor when the microphone starts receiving the first audio signal, and sends the audio recording start command to the transmitter, and generates an audio when the microphone ends receiving the first audio signal. Recording an end command, and sending it to the sender, the audio recording start command for instructing the second terminal to start recording the second audio signal generated by the second terminal, the audio recording end command, Instructing the second terminal to end recording the second audio signal, and transmitting, by the transmitter, the first audio signal to a server, so that the server utilizes the second audio signal to the first audio Signal noise reduction, avoiding existing technology Due to the suppression of noise, the speech signal is also suppressed to some extent, thereby improving the sound quality and the reliability of noise reduction after noise reduction.
  • FIG. 12 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure. As shown in FIG. 12, the terminal in this embodiment may include a receiver 1201, one or more processors 1202, and a transmitter 1203.
  • the receiver 1201 is configured to receive an audio recording start command sent by the first terminal, where the audio recording start command is sent to the terminal when the first terminal starts receiving the first audio signal, and the audio recording start command is Transfer to the processor 1202;
  • the processor 1202 is configured to start recording a second audio signal generated by the terminal according to the audio recording start command;
  • the receiver 1201 is further configured to receive an audio recording end command sent by the first terminal, and transmit the audio recording end command to the processor 1202, where the audio recording end command is the first terminal Transmitting to the terminal when receiving the first audio signal; the processor 1202 is further configured to end recording the second audio signal according to the audio recording end command, and to record the second The audio signal is sent by the transmitter 1203, and the transmitter 1203 is configured to send the second audio signal to the first terminal, so that the first terminal uses the second audio signal to the first The audio signal is noise-reduced or the second audio signal is sent to the server, so that the server uses the second audio signal to perform noise reduction on the received first audio signal sent by the first terminal.
  • the above receiver and transmitter may specifically be a radio frequency unit or a WiFi module.
  • the first audio signal may include, but is not limited to, voice data for voice control, voice data of a user voice call, or voice data for voice recording.
  • the processor 1202 may further perform time with the first terminal before the receiver 1201 receives the audio recording start command sent by the first terminal. Synchronize.
  • the audio recording start command may further include a start time stamp, where the start time stamp is used to indicate a time when the terminal records the second audio signal; and the audio record end command is further The end time of the bird may be further included to indicate that the terminal records the end of the second audio signal.
  • the processor 1202 is further Determining whether the terminal causes the first terminal to cause interference.
  • the terminal causes interference to the first terminal, determining to perform an operation of starting to record the second audio signal according to the audio recording start command;
  • the terminal does not cause interference to the first terminal, determining to not perform an operation of starting to record the second audio signal according to the audio recording start command, and generating a response message, handing the response message to the sending
  • the transmitter 1203 transmits, the response message indicating that the first audio signal does not need to be noise-reduced by the second audio signal.
  • the transmitter 1203 may send the response message to the first terminal or the server according to an instruction of the one or more processors.
  • the processor 1202 may further obtain, according to a distance between the terminal and the first terminal, attenuation information of the second audio signal, where And transmitting the attenuation information of the second audio signal to the transmitter 1203; correspondingly, the transmitter 1203 may send the attenuation information of the second audio signal to the first terminal, so that the Determining, by the first terminal, the first audio signal by using the attenuation information of the second audio signal and the second audio signal, or transmitting attenuation information of the second audio signal to the server, so that The server uses the second audio signal and the attenuation information of the second audio signal to perform noise reduction on the received first audio signal sent by the first terminal.
  • the terminal provided in this embodiment may further include a memory for storing information received or processed by other units or modules.
  • the terminal receives the audio recording start command sent by the first terminal by using the receiver, and the processor starts to record the second audio signal generated by the terminal according to the audio recording start command, where the audio recording start command is Transmitting to the terminal when the first terminal starts receiving the first audio signal, and the receiver receives an audio recording end command sent by the first terminal, and the processor ends the command according to the audio recording End recording the second audio signal, the audio recording end command is sent to the terminal when the first terminal ends receiving the first audio signal, and then sent by the transmitter to the first terminal or server
  • the second audio signal to enable the first terminal to perform noise reduction on the first audio signal using the second audio signal, or the server is capable of utilizing the second audio signal to receive the
  • the first audio signal sent by the first terminal performs noise reduction, which can avoid the same suppression of noise in the prior art.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute the method of the various embodiments of the present application. Part of the steps.
  • the foregoing storage medium includes: a USB flash drive, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and the like can store program codes. Medium.

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  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Telephone Function (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

La présente invention concerne un procédé de réduction de bruit et un terminal. Le procédé comprend les étapes au cours desquelles : (101) quand un premier terminal commence à recevoir un premier signal audio, une commande de début d'enregistrement audio est transmise à un second terminal, la commande de début d'enregistrement audio servant à donner au second terminal une instruction visant à commencer l'enregistrement d'un second signal audio produit par le second terminal ; (102) quand le premier terminal cesse de recevoir le premier signal audio, une commande de fin d'enregistrement audio est transmise au second terminal, la commande de fin d'enregistrement audio servant à donner au second terminal une instruction visant à cesser l'enregistrement du second signal audio, de sorte que (103) le premier terminal reçoit le second signal audio enregistré transmis par le second terminal, le second signal audio pouvant servir à effectuer une réduction de bruit sur le premier signal audio. Ainsi est-il possible d'éviter le problème de l'art antérieur, à savoir que, dans une certaine mesure, lors d'une suppression de bruit, le signal vocal est également supprimé. La qualité sonore après une réduction de bruit et la fiabilité de la réduction de bruit s'en trouvent améliorées.
PCT/CN2013/079065 2012-07-23 2013-07-09 Procédé de réduction de bruit et terminal WO2014015745A1 (fr)

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CN102543097A (zh) * 2012-01-16 2012-07-04 华为终端有限公司 降噪方法及设备
CN102779525A (zh) * 2012-07-23 2012-11-14 华为终端有限公司 降噪方法及终端

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EP4036911A4 (fr) * 2019-09-27 2022-09-28 NEC Corporation Dispositif de traitement de signal audio, procédé de traitement de signal audio et support d'informations

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