WO2020107192A1 - Appareil et procédé de lecture stéréophonique, support d'informations, et dispositif électronique - Google Patents

Appareil et procédé de lecture stéréophonique, support d'informations, et dispositif électronique Download PDF

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Publication number
WO2020107192A1
WO2020107192A1 PCT/CN2018/117582 CN2018117582W WO2020107192A1 WO 2020107192 A1 WO2020107192 A1 WO 2020107192A1 CN 2018117582 W CN2018117582 W CN 2018117582W WO 2020107192 A1 WO2020107192 A1 WO 2020107192A1
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WIPO (PCT)
Prior art keywords
channel signal
right channel
crosstalk cancellation
left channel
signal
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PCT/CN2018/117582
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English (en)
Chinese (zh)
Inventor
陈岩
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深圳市欢太科技有限公司
Oppo广东移动通信有限公司
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Application filed by 深圳市欢太科技有限公司, Oppo广东移动通信有限公司 filed Critical 深圳市欢太科技有限公司
Priority to PCT/CN2018/117582 priority Critical patent/WO2020107192A1/fr
Priority to CN201880098499.0A priority patent/CN112840671A/zh
Publication of WO2020107192A1 publication Critical patent/WO2020107192A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers

Definitions

  • the present application belongs to the field of communication technology, and in particular relates to a stereo playback method, device, storage medium, and electronic equipment.
  • the present application provides a stereo playback method, device, storage medium, and electronic equipment, which can avoid crosstalk between dual speakers and improve the stereo effect.
  • an embodiment of the present application provides a stereo playback method, which is applied to an electronic device.
  • the electronic device includes dual speakers, including:
  • the initial two-channel signal includes a left channel signal and a right channel signal
  • an enhanced two-channel signal is generated and output to the two speakers for playback.
  • an embodiment of the present application provides a stereo playback device, which is applied to an electronic device.
  • the electronic device includes dual speakers, including: an acquisition module, a preprocessing module, a processing module, and a playback module;
  • the acquiring module is configured to acquire an initial two-channel signal, and the initial two-channel signal includes a left channel signal and a right channel signal;
  • the preprocessing module is configured to preprocess the left channel signal and the right channel signal separately to obtain a first left channel signal, a second left channel signal, a first right channel signal, and a second Right channel signal;
  • the processing module is configured to calculate crosstalk cancellation optimization parameters, and process the second left channel signal and the second right channel signal according to the crosstalk cancellation optimization parameters.
  • the playback module is used to generate an enhanced two-channel signal according to the processed signal, and output to the two speakers for playback respectively.
  • an embodiment of the present application provides a storage medium on which a computer program is stored, and when the computer program is run on a computer, the computer is caused to execute the above-mentioned stereo playback method.
  • an embodiment of the present application provides an electronic device, including dual speakers, a processor, and a memory, where the memory stores multiple instructions, and the processor loads the instructions in the memory to perform the following steps:
  • the initial two-channel signal includes a left channel signal and a right channel signal
  • an enhanced two-channel signal is generated and output to the two speakers for playback.
  • FIG. 1 is a schematic flowchart of a stereo playback method provided by an embodiment of the present application.
  • FIG. 2 is another schematic flowchart of a stereo playback method provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a cross-talk effect of dual speakers provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a stereo playback device provided by an embodiment of the present application.
  • FIG. 5 is another schematic structural diagram of a stereo playback device provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • FIG 7 is another schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • the computer execution referred to herein includes operations by a computer processing unit that represents electronic signals representing data in a structured form. This operation transforms the data or maintains it at a location in the computer's memory system, which can be reconfigured or otherwise alter the operation of the computer in a manner well known to those skilled in the art.
  • the data structure maintained by the data is the physical location of the memory, which has specific characteristics defined by the data format.
  • the electronic device may be a smart phone, a tablet computer, a desktop computer, a notebook computer, or a handheld computer.
  • the left ear receives the sound from the left speaker (speaker or earpiece), and the right ear receives the sound from the right speaker (speaker or earpiece).
  • the left ear also receives the sound from the right speaker
  • the right ear also receives the sound from the left speaker. This is the phenomenon of crosstalk.
  • the distance between the two speakers is very close, the opening angle of the speaker is very narrow, the stereo effect is not good, and the crosstalk between the close-distance dual speakers is more obvious and seriously weakened The stereo effect of the original two-channel signal.
  • the distance between the two speakers is very close.
  • the distance between the two speakers is generally 15.6 cm. Therefore, the crosstalk between the two speakers is very obvious.
  • the distance between the mobile phone and the center of the listener's head is usually about 30 cm to 50 cm, so the opening angle of the two speakers relative to the listener is very small, about 10° or less, and the stereo effect Not very obvious.
  • An embodiment of the present application provides a stereo playback method.
  • the execution subject of the stereo playback method may be the stereo playback device provided by the embodiment of the present application, or an electronic device integrated with the stereo playback device, wherein the stereo playback device may use hardware or Realized by software.
  • the stereo playback method includes: acquiring an initial two-channel signal, where the initial two-channel signal includes a left channel signal and a right channel signal;
  • an enhanced two-channel signal is generated and output to the two speakers for playback.
  • the method before generating an enhanced two-channel signal according to the processed signal, the method further includes:
  • preprocessing the left channel signal and the right channel signal separately includes:
  • the left channel signal and the right channel signal are respectively input into a low-pass filter to obtain a second left channel signal and a second right channel signal.
  • generating an enhanced binaural signal according to the processed signal includes:
  • G is a constant
  • C is a crosstalk cancellation matrix
  • H LL , H RR , H RL and H LR are head related transfer functions
  • S LHP , S RHP , S LLP and S RLP are the first left channel signal, The first right channel signal, the second left channel signal, and the second right channel signal.
  • processing the second left channel signal and the second right channel signal according to the crosstalk cancellation optimization parameter includes:
  • generating the crosstalk cancellation matrix according to the crosstalk cancellation optimization parameter includes:
  • the crosstalk cancellation matrix is generated according to a second formula, where the second formula is:
  • H H represents the conjugate transposed matrix of matrix H
  • ⁇ is the crosstalk cancellation optimization parameter
  • S is the norm of the crosstalk cancellation matrix C.
  • the calculation method of the crosstalk cancellation optimization parameter ⁇ includes:
  • ⁇ represents the preset threshold.
  • the method further includes:
  • the energy of the predetermined frequency band signal in the second left channel signal and the second right channel signal is boosted.
  • FIG. 1 is a schematic flowchart of a stereo playback method provided by an embodiment of the present application.
  • the stereo playback method provided by the embodiment of the present application is applied to an electronic device, and the specific process may be as follows:
  • Step 101 Acquire an initial two-channel signal.
  • the initial two-channel signal includes a left channel signal and a right channel signal.
  • the present application is applied to an electronic device with dual speakers.
  • the dual speaker may be composed of two speakers of the electronic device, or may be composed of a speaker and a receiver.
  • the position of the dual speakers may be located at both ends of the electronic device, respectively, so that the electronic The device has a stereo effect.
  • each speaker is provided with a signal by a single channel. That is, the electronic device needs to obtain a two-channel signal to realize stereo playback, and the two-channel signal includes a left channel signal and a right channel signal.
  • the electronic device acquires the binaural signal stored locally, or acquires the binaural signal on the server through a wired or wireless network.
  • the two-channel signal is obtained by recording sound through a stereo recording device.
  • the stereo recording device usually includes a first microphone on the left and a second microphone on the right.
  • the stereo recording device records the left through the first microphone and the second microphone, respectively.
  • the sound on the side and the sound on the right obtain the left channel audio signal and the right channel audio signal.
  • the above-mentioned two-channel signal may be application programs, television or radio, sound files, sound data of video files, and so on.
  • the electronic device may store the received two-channel signal in a built-in buffer area in the form of a sample pair of the left channel audio signal and the corresponding right channel audio signal.
  • Step 102 Preprocess the left channel signal and the right channel signal separately to obtain a first left channel signal, a second left channel signal, a first right channel signal, and a second right channel signal.
  • the two-channel signal can be pre-processed by a high-pass filter and a low-pass filter, for example, the left-channel signal and the right-channel signal are input to the high-pass filter and the low-pass filter, respectively, to obtain The first left channel signal, the second left channel signal, the first right channel signal, and the second right channel signal.
  • the above high-pass filter is a kind of filter that allows frequencies above a certain cutoff frequency to pass through while greatly attenuating lower frequencies.
  • the low-pass filter allows signals lower than the cut-off frequency to pass, but higher than the cut-off frequency An electronic filtering device through which the signal cannot pass.
  • the high-pass filter and the low-pass filter may be two independent filters or integrated into a single filter, wherein the frequency threshold used to distinguish the high-frequency signal from the low-frequency signal may be set according to requirements.
  • the high-pass filter only allows high-frequency signals to pass while blocking low-frequency signals
  • the low-pass filter only allows low-frequency signals to pass while blocking high-frequency signals.
  • Step 103 Calculate crosstalk cancellation optimization parameters, and process the second left channel signal and the second right channel signal according to the crosstalk cancellation optimization parameters.
  • the present invention mainly performs crosstalk cancellation processing on the mid-low frequency sound signals, that is, the second left channel signal and the second right channel signal.
  • the second left channel signal and the second right channel signal can be cross-talk eliminated through a cross-talk cancellation matrix.
  • the method is relatively sensitive to head movement, and the optimal sound range is limited.
  • the crosstalk cancellation optimization parameter is added to correct the crosstalk cancellation matrix. Therefore, the crosstalk cancellation optimization parameter may be calculated first, and then a crosstalk cancellation matrix is generated according to the crosstalk cancellation optimization parameter, so as to perform crosstalk cancellation processing on the second left channel signal and the second right channel signal.
  • Step 104 Generate an enhanced two-channel signal according to the processed signal, and output to the two speakers for playback respectively.
  • the obtained enhanced two-channel signal includes an enhanced left channel signal and a right channel signal.
  • the enhanced left channel signal is output through the left speaker of the electronic device, and the obtained right channel signal Output through the right speaker of the electronic device, so that the user can obtain the stereo-enhanced left and right channel signals.
  • the stereo playback method can obtain an initial two-channel signal.
  • the initial two-channel signal includes a left-channel signal and a right-channel signal. Processing to obtain the first left channel signal, the second left channel signal, the first right channel signal, and the second right channel signal, calculating crosstalk cancellation optimization parameters, and according to the crosstalk cancellation optimization parameters for the second
  • the left channel signal and the second right channel signal are processed, and an enhanced two-channel signal is generated according to the processed signal, and output to the two speakers for playback, respectively.
  • the crosstalk between the two speakers can be avoided, and the stereo playback effect can be improved.
  • FIG. 2 is another schematic flowchart of a stereo playback method provided by an embodiment of the present application.
  • the stereo playback method includes:
  • Step 201 Acquire an initial two-channel signal.
  • the initial two-channel signal includes a left channel signal and a right channel signal.
  • the electronic device acquires the binaural signal stored locally, or acquires the binaural signal on the server through a wired or wireless network.
  • the two-channel signal is obtained by recording sound through a stereo recording device.
  • the stereo recording device usually includes a first microphone on the left and a second microphone on the right.
  • the stereo recording device records the left through the first microphone and the second microphone, respectively.
  • the sound on the side and the sound on the right obtain the left channel audio signal and the right channel audio signal.
  • the above-mentioned two-channel signal may be application programs, television or radio, sound files, sound data of video files, and so on.
  • the electronic device may store the received two-channel signal in a built-in buffer area in the form of a sample pair of the left channel audio signal and the corresponding right channel audio signal.
  • FIG. 3 is a schematic diagram of a cross-talk effect of dual speakers provided by an embodiment of the present application.
  • the distance between the two speakers is generally 15.6 cm.
  • the distance between the electronic device and the center of the listener's head is usually about 30 cm to 50 cm.
  • the left speaker 1 and The opening angle ⁇ of the right speaker 2 relative to the listener's head is about 10° or less.
  • the left ear 3 receives the sound from the left speaker 1 and the right ear 4 receives the sound from the right speaker 2.
  • the distance between the left speaker 1 and the right speaker 2 is very close, and the opening angle ⁇ of the speaker is very narrow, so the left ear 3 of the listener receives the sound output from the left speaker
  • the sound from the right speaker 2 is received, and the right ear 4 receives the sound signal from the right speaker 2 and the sound from the left speaker 1 at the same time.
  • This is the so-called crosstalk phenomenon.
  • the smaller the distance between the left speaker 1 and the right speaker 2 the crosstalk phenomenon will be more serious, which greatly weakens the stereo effect of the two-channel signal.
  • the technical solution adopted in the embodiment of the present invention can effectively eliminate the cross-talk generated by the sound signals output by the two speakers between the two ears of the listener by performing cross-talk cancellation on the two-channel signal Sound phenomenon.
  • Step 202 Input the left channel signal and the right channel signal into the high pass filter to obtain the first left channel signal and the first right channel signal, respectively, and input the left channel signal and the right channel signal into the low pass filter respectively To obtain the second left channel signal and the second right channel signal.
  • the part where the crosstalk occurs in the output signals of the left and right speakers is mainly the middle and low frequency part of the output sound signal. Therefore, it is possible to perform crosstalk cancellation on the middle and low frequency parts of the left and right speakers without the need for the high frequency components of the first left channel signal and the first right channel signal and the high frequency components of the first channel signal Perform crosstalk cancellation.
  • the left channel signal and the right channel signal may be first subjected to high-pass filtering processing to obtain The high frequency components of the left channel signal and the right channel signal, namely the first left channel signal S LHP and the first right channel signal S RHP .
  • the left channel signal and the right channel signal are respectively subjected to low frequency filtering processing to obtain corresponding second left channel signal S LLP and second right channel signal S RLP .
  • the value of the corresponding frequency dividing point may be 4500 Hz.
  • Step 203 Calculate crosstalk cancellation optimization parameters, and generate a crosstalk cancellation matrix according to the crosstalk cancellation optimization parameters.
  • the sound of the speaker heard by the human ear can be expressed as:
  • E L represents the left ear of the listener to hear a sound signal of
  • E R represents sound signals the listener's right ear to hear
  • L out indicates a sound signal output from the left speaker
  • R out represents the right audio signal output from the speaker.
  • the head-related transfer function HRTF indicates the transfer function on the binaural path from the sound source to the listener
  • H LL indicates the head-related transfer function of the left channel mid-low frequency signal corresponding to the left ear
  • H LR indicates the left channel mid-low frequency signal corresponds to the right
  • H RL represents the head-related transfer function of the right channel mid-low frequency signal corresponding to the left ear
  • H RR represents the head-related transfer function of the right channel mid-low frequency signal corresponding to the right ear.
  • G is a constant
  • C is a crosstalk cancellation matrix
  • H LL , H RR , H RL and H LR are head related transfer functions
  • S LHP , S RHP , S LLP and S RLP are the first left channel signal, The first right channel signal, the second left channel signal, and the second right channel signal.
  • the optimal sound range that the listener can feel is limited.
  • head Can receive a signal with strong stereo effect can optimize the crosstalk cancellation method, modify the crosstalk cancellation matrix, and get the corrected crosstalk cancellation matrix:
  • H H represents the conjugate transposed matrix of matrix H
  • ⁇ is the crosstalk cancellation optimization parameter
  • S is the norm of the crosstalk cancellation matrix C.
  • the calculation method of the crosstalk cancellation optimization parameter ⁇ includes:
  • Step 204 Process the second left channel signal and the second right channel signal according to the crosstalk cancellation matrix.
  • Step 205 Perform level adjustment on the first left channel signal and the first right channel signal.
  • the signal level adjustment constants when performing signal level adjustment processing on the first left channel signal and the first right channel signal can be set according to actual needs.
  • Step 206 Generate an enhanced two-channel signal according to the processed signal, and output to the two speakers for playback respectively.
  • the mid-low frequency signal of the left channel after crosstalk elimination Add the left channel high-frequency signal after the signal level adjustment, and add the mid-frequency low-frequency signal after the crosstalk cancellation and the right channel high-frequency signal after the signal level adjustment to obtain
  • the left and right channel signals after crosstalk cancellation are output to the dual speakers for playback.
  • the enhanced left channel signal is output through the left speaker of the electronic device
  • the obtained right channel signal is output through the right speaker of the electronic device, so that the user can obtain the stereo enhanced left channel signal and the right channel signal .
  • the method further includes:
  • the energy of the predetermined frequency band signal in the second left channel signal and the second right channel signal is boosted.
  • the second left channel signal and the second right channel signal are band energy boosted by a band booster to boost the energy of the band signal with a frequency between 300 Hz and 3000 Hz by 3-5 dB to increase the sound Transparency.
  • the stereo playback method can obtain an initial two-channel signal, and the initial two-channel signal includes a left-channel signal and a right-channel signal, and the left-channel signal and the right-channel signal are input to Qualcomm Filter to obtain the first left channel signal and the first right channel signal, and input the left channel signal and the right channel signal to the low-pass filter to obtain the second left channel signal and the second right channel signal, Calculate the crosstalk cancellation optimization parameters, generate a crosstalk cancellation matrix according to the crosstalk cancellation optimization parameters, process the second left channel signal and the second right channel signal according to the crosstalk cancellation matrix, and process the first left channel signal and the second A right channel signal is level-adjusted, and an enhanced two-channel signal is generated according to the processed signal, and output to two speakers for playback.
  • the initial two-channel signal includes a left-channel signal and a right-channel signal
  • the left-channel signal and the right-channel signal are input to Qualcomm Filter to obtain the first left channel signal and the first right channel signal, and input the left channel signal and the
  • FIG. 4 is a schematic structural diagram of a stereo playback device according to an embodiment of the present application.
  • the stereo playback device 300 is applied to electronic equipment, the electronic device includes dual speakers, and the stereo playback device 300 includes an acquisition module 301, a pre-processing module 302, a processing module 303, and a playback module 304;
  • the obtaining module 301 is configured to obtain an initial two-channel signal, and the initial two-channel signal includes a left channel signal and a right channel signal;
  • the preprocessing module 302 is configured to preprocess the left channel signal and the right channel signal separately to obtain the first left channel signal, the second left channel signal, the first right channel signal, and the first Second right channel signal;
  • the processing module 303 is configured to calculate crosstalk cancellation optimization parameters, and process the second left channel signal and the second right channel signal according to the crosstalk cancellation optimization parameters.
  • the playback module 304 is configured to generate an enhanced two-channel signal according to the processed signal, and output to the two speakers for playback respectively.
  • FIG. 5 is a schematic structural diagram of a stereo playback device provided by an embodiment of the present application.
  • the device 300 may further include: an adjustment module 305;
  • the adjustment module 305 is configured to perform level adjustment on the first left channel signal and the first right channel signal before the playback module generates an enhanced two-channel signal according to the processed signal.
  • the preprocessing module 302 may include: a first preprocessing submodule 3021 and a second preprocessing submodule 3022;
  • the first preprocessing submodule 3021 is configured to input the left channel signal and the right channel signal to a high-pass filter to obtain a first left channel signal and a first right channel signal;
  • the second pre-processing submodule 3022 is configured to input the left channel signal and the right channel signal to a low-pass filter to obtain a second left channel signal and a second right channel signal.
  • the playback module 304 is specifically configured to generate an enhanced binaural signal according to a first formula, where the first formula is:
  • G is a constant
  • C is a crosstalk cancellation matrix
  • H LL , H RR , H RL and H LR are head related transfer functions
  • S LHP , S RHP , S LLP and S RLP are the first left channel signal, The first right channel signal, the second left channel signal, and the second right channel signal.
  • the processing module 303 may include: a generating submodule 3031 and a processing submodule 3032;
  • the generating submodule 3031 is configured to calculate crosstalk cancellation optimization parameters, and generate the crosstalk cancellation matrix according to the crosstalk cancellation optimization parameters;
  • the processing submodule 3032 is configured to process the second left channel signal and the second right channel signal according to the crosstalk cancellation matrix.
  • the stereo playback device of the embodiment of the present application can acquire the initial two-channel signal, and the initial two-channel signal includes the left channel signal and the right channel signal, and the left channel signal and the right channel signal are preprocessed respectively To obtain the first left channel signal, the second left channel signal, the first right channel signal, and the second right channel signal, calculate the crosstalk cancellation optimization parameter, and perform the crosstalk cancellation optimization parameter on the second left channel signal
  • the channel signal and the second right channel signal are processed, and an enhanced two-channel signal is generated according to the processed signal and output to the two speakers for playback.
  • the crosstalk between the two speakers can be avoided, and the stereo playback effect can be improved.
  • the stereo playback device and the stereo playback method in the above embodiments belong to the same concept. Any method provided in the stereo playback method embodiment can be run on the stereo playback device. For the specific implementation process, see stereo playback The method embodiments will not be repeated here.
  • module used herein may be regarded as a software object executed on the computing system.
  • the different components, modules, engines and services described in this article can be regarded as the implementation objects on the computing system.
  • the device and method described herein can be implemented in the form of software, and of course can also be implemented in hardware, which are all within the protection scope of the present application.
  • An embodiment of the present application further provides a storage medium on which a computer program is stored, and when the computer program is run on a computer, the computer is caused to execute the above-mentioned stereo playback method.
  • An embodiment of the present application also provides an electronic device, including dual speakers, such as a tablet computer, a mobile phone, and the like.
  • the processor in the electronic device loads the instructions corresponding to the process of one or more application programs into the memory according to the following steps, and the processor runs the application programs stored in the memory to implement various functions:
  • the initial two-channel signal includes a left channel signal and a right channel signal
  • an enhanced two-channel signal is generated and output to the two speakers for playback.
  • the processor before generating an enhanced two-channel signal according to the processed signal, the processor is further configured to perform the following steps:
  • the processor when preprocessing the left channel signal and the right channel signal separately, the processor is configured to perform the following steps:
  • the left channel signal and the right channel signal are respectively input into a low-pass filter to obtain a second left channel signal and a second right channel signal.
  • the processor when an enhanced two-channel signal is generated according to the processed signal, the processor is used to perform the following steps:
  • G is a constant
  • C is a crosstalk cancellation matrix
  • H LL , H RR , H RL and H LR are head related transfer functions
  • S LHP , S RHP , S LLP and S RLP are the first left channel signal, The first right channel signal, the second left channel signal, and the second right channel signal.
  • the processor when processing the second left channel signal and the second right channel signal according to the crosstalk cancellation optimization parameter, the processor is configured to perform the following steps:
  • the processor when generating the crosstalk cancellation matrix according to the crosstalk cancellation optimization parameter, is configured to perform the following steps:
  • the crosstalk cancellation matrix is generated according to a second formula, where the second formula is:
  • H H represents the conjugate transposed matrix of matrix H
  • ⁇ is the crosstalk cancellation optimization parameter
  • S is the norm of the crosstalk cancellation matrix C.
  • the electronic device 400 includes a processor 401 and a memory 402.
  • the processor 401 is electrically connected to the memory 402.
  • the processor 400 is the control center of the electronic device 400, and uses various interfaces and lines to connect the various parts of the entire electronic device. By running or loading the computer program stored in the memory 402 and calling the data stored in the memory 402, the electronic The various functions of the device 400 and processing of data, thereby performing an overall monitoring of the electronic device 400.
  • the memory 402 may be used to store software programs and modules.
  • the processor 401 runs computer programs and modules stored in the memory 402 to execute various functional applications and data processing.
  • the memory 402 may mainly include a storage program area and a storage data area, where the storage program area may store an operating system, computer programs required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of electronic devices, etc.
  • the memory 402 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory 402 may further include a memory controller to provide the processor 401 with access to the memory 402.
  • the processor 401 in the electronic device 400 will load the instructions corresponding to the process of one or more computer programs into the memory 402 according to the following steps, and the processor 401 executes and stores the instructions in the memory 402
  • the computer program in, which realizes various functions, is as follows:
  • the initial two-channel signal includes a left channel signal and a right channel signal
  • an enhanced two-channel signal is generated and output to the two speakers for playback.
  • the electronic device 400 may further include: a display 403, a radio frequency circuit 404, an audio circuit 405, and a power supply 406.
  • the display 403, the radio frequency circuit 404, the audio circuit 405, and the power supply 406 are electrically connected to the processor 401, respectively.
  • the display 403 may be used to display information input by the user or provided to the user and various graphical user interfaces, which may be composed of graphics, text, icons, video, and any combination thereof.
  • the display 403 may include a display panel.
  • the display panel may be configured in the form of a liquid crystal display (Liquid Crystal) (LCD) or an organic light emitting diode (Organic Light-Emitting Diode, OLED).
  • LCD liquid crystal display
  • OLED Organic Light-Emitting Diode
  • the radio frequency circuit 404 may be used to send and receive radio frequency signals to establish wireless communication with network devices or other electronic devices through wireless communication, and to send and receive signals with network devices or other electronic devices.
  • the audio circuit 405 can be used to provide an audio interface between a user and an electronic device through a speaker or a microphone.
  • the power supply 406 may be used to power various components of the electronic device 400.
  • the power supply 406 may be logically connected to the processor 401 through a power management system, so as to implement functions such as charging, discharging, and power management through the power management system.
  • the electronic device 400 may further include a camera, a Bluetooth module, etc., which will not be repeated here.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.
  • the computer program may be stored in a computer-readable storage medium, such as stored in the memory of the electronic device, and executed by at least one processor in the electronic device, and may include, for example, the embodiment of the stereo playback method during execution Process.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory, a random access memory, or the like.
  • each functional module may be integrated into one processing chip, or each module may exist alone physically, or two or more modules are integrated into one module.
  • the above integrated modules may be implemented in the form of hardware or software function modules. If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium, such as a read-only memory, magnetic disk, or optical disk.

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Abstract

La présente invention concerne un procédé de lecture stéréophonique, consistant : à réaliser un prétraitement sur un signal de canal sonore gauche et un signal de canal sonore droit pour obtenir un premier signal de canal sonore gauche, un second signal de canal sonore gauche, un premier signal de canal sonore droit, et un second signal de canal sonore droit ; sur la base de paramètres d'optimisation d'annulation de diaphonie, à traiter le second signal de canal sonore gauche et le second signal de canal sonore droit, à générer des signaux de canal sonore double améliorés, et à les délivrer respectivement à des haut-parleurs doubles. La présente invention concerne un appareil de lecture stéréophonique, un support d'informations, et un dispositif électronique.
PCT/CN2018/117582 2018-11-27 2018-11-27 Appareil et procédé de lecture stéréophonique, support d'informations, et dispositif électronique WO2020107192A1 (fr)

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CN201880098499.0A CN112840671A (zh) 2018-11-27 2018-11-27 立体声播放方法、装置、存储介质及电子设备

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