Display device, audio device, and audio signal playback method

Abstract

The present disclosure is applied to the technical field of terminals, and relates to a display device, an audio device, and an audio signal playback method. The display device comprises: a controller, configured to: acquire channel parameters of an audio device, wherein the channel parameters are used for indicating a first channel supported by the audio device; determine a target audio mixing scheme on the basis of the first channel and a second channel supported by the display device, wherein there is no channel of the same type in a third channel and a fourth channel; in response to an operation of playing a target audio signal, on the basis of the target audio mixing scheme, acquire a first audio signal corresponding to the third channel in the target audio signal; send target instruction information, wherein the target instruction information is used for instructing the audio device to play a second audio signal corresponding to the fourth channel in the target audio signal; and play the first audio signal.

Description

Display devices, audio equipment, and audio signal playback methods

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese patent application No. 2025103805335, filed on March 26, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to terminal technology in several embodiments. More specifically, it relates to a display device, an audio device, and a method for playing audio signals. Background Technology

[0004] In related technologies, a solution for television and audio equipment to jointly produce sound can be that the television plays the corresponding channel signal from the audio signal according to its own included channels, and the audio equipment also plays the corresponding channel signal from the audio signal according to its own included channels. In this case, when the television and audio equipment include the same channels, there will be two channels of the same type playing the same channel signal at the same time. As a result, channel conflict will occur due to the different positions or delays of the two channels of the same type, resulting in poor sound production. Summary of the Invention

[0005] This disclosure provides a display device, including: a controller configured to: acquire channel parameters of an audio device, the channel parameters indicating a first channel supported by the audio device; determine a target harmonic scheme based on the first channel and a second channel supported by the display device, the target harmonic scheme indicating a third channel in the second channel for playing the target audio signal, and a fourth channel in the first channel for playing the target audio signal, wherein the third channel and the fourth channel do not contain channels of the same type; in response to an operation of playing the target audio signal, acquire a first audio signal corresponding to the third channel in the target audio signal based on the target harmonic scheme; send target indication information, the target indication information indicating that the audio device plays the second audio signal corresponding to the fourth channel in the target audio signal; and play the first audio signal.

[0006] This disclosure provides an audio device in several embodiments, including: a controller configured to: send channel parameters of the audio device, the channel parameters indicating a first channel supported by the audio device, to enable a display device to determine a target harmonic scheme based on the first channel and a second channel supported by the display device, the target harmonic scheme indicating a third channel in the second channel for playing a target audio signal and a fourth channel in the first channel for playing the target audio signal, wherein the third channel and the fourth channel do not contain channels of the same type; and receive target indication information, the target indication information indicating that when the display device plays a first audio signal corresponding to the fourth channel in the target audio signal, the audio device synchronously plays a second audio signal corresponding to the fourth channel in the target audio signal, the target indication information being sent by the display device in response to an operation of playing the target audio signal, based on the target harmonic scheme.

[0007] This disclosure provides an audio signal playback method for a display device, comprising: acquiring channel parameters of an audio device, the channel parameters indicating a first channel supported by the audio device; determining a target harmony scheme based on the first channel and a second channel supported by the display device, the target harmony scheme indicating a third channel in the second channel used for playing the target audio signal, and a fourth channel in the first channel used for playing the target audio signal, wherein the third channel and the fourth channel do not contain channels of the same type; in response to an operation of playing the target audio signal, acquiring a first audio signal corresponding to the third channel in the target audio signal based on the target harmony scheme; sending target indication information, the target indication information indicating the audio device to play a second audio signal corresponding to the fourth channel in the target audio signal; and playing the first audio signal.

[0008] This disclosure provides an audio signal playback method for an audio device, comprising: sending channel parameters of the audio device, the channel parameters indicating a first channel supported by the audio device, so that a display device determines a target harmony scheme based on the first channel and a second channel supported by the display device, the target harmony scheme indicating a third channel in the second channel for playing a target audio signal and a fourth channel in the first channel for playing the target audio signal, wherein the third channel and the fourth channel do not have channels of the same type; receiving target indication information, the target indication information indicating that when the display device plays a first audio signal corresponding to the fourth channel in the target audio signal, the audio device synchronously plays a second audio signal corresponding to the fourth channel in the target audio signal, the target indication information being sent by the display device in response to the operation of playing the target audio signal based on the target harmony scheme; and playing the second audio signal. Attached Figure Description

[0009] To more clearly illustrate the implementation methods in some embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings.

[0010] Figure 1 illustrates an operational scenario between a display device and a control device according to some embodiments;

[0011] Figure 2 shows a hardware configuration block diagram of a control device 100 according to some embodiments;

[0012] Figure 3 shows a hardware configuration block diagram of a display device 200 according to some embodiments;

[0013] Figure 4 illustrates a schematic diagram of a sound combination scheme in which a display device and an audio device jointly produce sound according to some embodiments;

[0014] Figure 5 shows a schematic diagram of a sound combination scheme in which a display device and an audio device jointly produce sound according to some embodiments;

[0015] Figure 6 illustrates a schematic diagram of a sound combination scheme in which a display device and an audio device jointly produce sound according to some embodiments;

[0016] Figure 7 illustrates a schematic diagram of a sound combination scheme in which a display device and an audio device jointly produce sound according to some embodiments;

[0017] Figure 8 illustrates a schematic diagram showing that the relative positions of a display device, an audio device, and a remote control according to some embodiments satisfy the target conditions;

[0018] Figure 9 illustrates a software configuration diagram of a display device 200 according to some embodiments;

[0019] Figure 10 shows a flowchart of an audio signal playback method according to some embodiments;

[0020] Figure 11 shows a flowchart of an audio signal playback method according to some embodiments;

[0021] Figure 12 shows a flowchart of an audio signal playback method according to some embodiments;

[0022] Figure 13 shows a schematic flowchart of an audio signal playback method according to some embodiments. Detailed Implementation

[0023] To make some embodiments of this disclosure clearer, the exemplary embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this disclosure. Obviously, the described exemplary embodiments are only some embodiments of this disclosure, and not all embodiments. It should be noted that the brief description of terms in this disclosure is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this disclosure. Unless otherwise stated, these terms should be understood in their ordinary and common meaning. The terms "first," "second," "third," etc., in the specification, claims, and the accompanying drawings of this disclosure are used to distinguish similar or class-like objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise specified. It should be understood that such terms can be used interchangeably where appropriate. The terms "comprising" and "having," and any variations thereof, are intended to be covert but not exclusive inclusion. For example, a product or device that includes a series of components is not necessarily limited to all components explicitly listed, but may include other components not explicitly listed or inherent to such product or device.

[0024] The display devices provided in some embodiments of this disclosure can have various implementation forms, such as televisions, laser projection devices, monitors, electronic bulletin boards, electronic tables, mobile phones, tablet computers, laptops, handheld computers, vehicle-mounted electronic devices, etc.

[0025] Figure 1 is a schematic diagram of an operational scenario between a display device and a control device according to some embodiments, wherein the control device includes a terminal device or a control unit. As shown in Figure 1, a user can operate the display device 200 through the terminal device 300 or the control unit 100. In some embodiments, the control unit 100 may be a remote control, and communication between the remote control and the display device includes infrared protocol communication or Bluetooth protocol communication, as well as other short-range communication methods, to control the display device 200 wirelessly or via wired means. The user can input user commands through buttons on the remote control, voice input, control panel input, etc., to control the display device 200. In some embodiments, the terminal device 300 (such as a mobile terminal, tablet computer, computer, laptop computer, etc.) may also be used to control the display device 200. For example, an application running on the terminal device can be used to control the display device 200. In some embodiments, the display device may receive commands without using the aforementioned terminal device or control unit, but instead receive user control through touch or gestures. In some embodiments, the display device 200 can also be controlled in ways other than the control device 100 and the terminal device 300. For example, it can directly receive user voice commands through a module configured inside the display device 200 for acquiring voice commands, or it can receive user voice commands through a voice control device external to the display device 200. In some embodiments, the display device 200 also communicates with the server 400. The display device 200 can communicate via a local area network (LAN), a wireless local area network (WLAN), and other networks. The server 400 can provide various content and interactive features to the display device 200. The server 400 can be a cluster or multiple clusters, and can include one or more types of servers.

[0026] Figure 2 illustrates an exemplary configuration block diagram of the control device 100 according to some embodiments. As shown in Figure 2, the control device 100 includes a controller 110, a communication interface 130, a user input / output interface 140, an external memory 150, and a power supply 160. The control device 100 can receive user input operation commands and convert the operation commands into commands that the display device 200 can recognize and respond to, thus acting as an intermediary for interaction between the user and the display device 200. In some embodiments, the communication interface 130 includes a WiFi chip 1301, a Bluetooth module 1302, and an NFC 1303. The user input / output interface 140 includes a microphone 1401, a touchpad 1402, a sensor 1403, and buttons 1404. The controller 110 includes a RAM 1101, a ROM 1102, and a processor 1103.

[0027] As shown in Figure 3, the display device 200 includes at least one of a tuner / demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, a user interface 280, a memory 2902, and a power supply 2901. In some embodiments, the display 260 includes a display screen assembly for presenting images, a driving assembly for driving image display, a component for receiving image signals output from the controller, and a component for displaying video content, image content, and a menu control interface, as well as a user control UI interface. The display 260 can be a liquid crystal display, an OLED display, or a projection display, and can also be a projection device and a projection screen. The communicator 220 is a component for communicating with external devices or servers according to various communication protocol types. For example, the communicator may include at least one of a WiFi module 2201, a Bluetooth module 2202, a wired Ethernet module 2203, or other network communication protocol chips or near-field communication protocol chips, as well as an infrared receiver. Display device 200 can establish the transmission and reception of control signals and data signals with external control device 100 or server 400 through communicator 220. User interface 280 can be used to receive control signals from control device 100 (e.g., infrared remote control), or to directly receive user input operation commands and convert the operation commands into commands that display device 200 can recognize and respond to; in this case, it can be called user input interface. Detector 230 is used to collect signals from the external environment or signals interacting with the outside world. For example, detector 230 includes a light receiver, a sensor for collecting ambient light intensity; or detector 230 includes an image acquisition device 2302, such as a camera, which can be used to collect external environmental scenes, user attributes, or user interaction gestures; or detector 230 includes a sound acquisition device 2301, such as a microphone, for receiving external sounds. External device interface 240 may include, but is not limited to, one or more of the following: High-definition multimedia interface 2401 (HDMI), analog or data high-definition component input interface 2403 (component), composite video input interface 2402 (CVBS), USB interface 2404 (USB), RGB port, etc., or may be a composite input / output interface formed by multiple of the above interfaces. Tuner / demodulator 210 receives broadcast television signals via wired or wireless reception, and demodulates audio and video signals, such as EPG data signals, from multiple wireless or wired broadcast television signals. In some embodiments, audio output interface 270 may include speaker 2701 and external audio output terminal 2702.

[0028] In some embodiments, the controller 250 and the tuner 210 may be located in different separate devices; that is, the tuner 210 may also be located in an external device of the main device containing the controller 250, such as an external set-top box. The controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory (internal or external memory). The controller 250 controls the overall operation of the display device 200. For example, in response to receiving a user command to select a UI object to display on the display 260, the controller 250 can perform operations related to the object selected by the user command. In some embodiments, the controller 250 includes at least one of the following: a central processing unit (CPU) 2506, a video processor 2503, an audio processor 2505, a graphics processing unit (GPU) 2504, a random access memory (RAM) 2501, a read-only memory (ROM) 2502, a first interface 2507, a second interface 2508, ..., an nth interface 250n for input / output, and a communication bus. RAM, also called main memory, is an internal memory that directly exchanges data with the controller. It can be read and written at any time (except during refresh) and is very fast, typically serving as a temporary data storage medium for the operating system or other running programs. Its biggest difference from ROM is the volatility of data; data stored in RAM is lost when power is off. RAM is used in computers and digital systems to temporarily store programs, data, and intermediate results. ROM operates in a non-destructive read-only manner, allowing only reading and not writing of information. Once information is written, it is fixed and will not be lost even if the power is cut off; therefore, it is also called fixed memory. Users can input commands through the graphical user interface (GUI) displayed on the monitor 260, and the user input interface receives these commands through the GUI. Alternatively, users can input commands through specific sounds or gestures, and the user input interface receives these commands by recognizing the sounds or gestures through sensors. A "user interface" is the medium through which applications or operating systems interact and exchange information with users; it converts the internal form of information into a form acceptable to the user. The most common form of user interface is the graphical user interface (GUI), which refers to a user interface related to computer operation displayed graphically. It can be an icon, window, control, or other interface element displayed on the screen of a display device. Controls can include visual interface elements such as icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, and widgets.Taking televisions (TVs) as an example, TV manufacturers are increasingly supporting combined sound output from TVs and their own soundbars. Due to differences in hardware capabilities across different TV platforms—for instance, some TVs are 2.0 channels, some 2.1 channels, some 2.1.2 channels, some 4.1 channels, some 4.1.2 channels, and some 5.1.2 channels—and some models have separate overhead speakers output from the TV, while others lack overhead speakers and output from the soundbars, and vice versa, some models support 2.1 channels, some 3.1, some 4.1.2, and some 5.1.2, etc.—the current strategy is to pair a specific TV model with a specific soundbar model for combined sound output. However, with the increasing number of TV and soundbar models supporting combined sound output, it's no longer possible to rigidly bind users to specific product types. Therefore, when a TV and a soundbar that support chords are used together to produce sound, there may be a channel conflict problem. For example, when a TV that supports 4.1.2 channels and a soundbar that supports 4.1.2 channels are used together to produce sound, there will be a channel overlap problem.

[0029] In some embodiments of this disclosure, the television can be a television of the related technology, such as a laser television; the audio equipment can include an all-in-one audio system, an audio system with an external subwoofer, an audio system with different numbers of satellite speakers, etc. Some embodiments of this disclosure provide a display device, an audio system, and an audio signal playback method. The display device and the audio system can interact to implement the audio signal playback method provided in some embodiments of this disclosure, or the functional modules or entities in the display device can interact with the functional modules or entities in the audio system to implement the audio signal playback method provided in some embodiments of this disclosure. The controller included in the display device can correspond to the controller 250 in Figure 3 above.

[0030] This disclosure provides some embodiments of a control logic for a display device 200 and an interaction for audio signal playback. The display device 200 may be a television (TV), laser television, or projection device, etc. As shown in FIG3, the display device 200 includes a controller 250. To achieve seamless and conflict-free joint sound generation (combined sound function) with an external audio device (e.g., a soundbar), the controller 250 may perform the following process: In the parameter configuration phase, the controller 250 is configured to acquire the channel parameters of the audio device, the channel parameters indicating the first channel supported by the audio device. In some embodiments, the display device 200 may establish a communication connection with the audio device through its communicator 220 or external device interface 240. In some embodiments, the action of the display device 200 acquiring the channel parameters of the audio device may be automatically triggered during the initial physical connection between the display device 200 and the audio device (e.g., inserting an HDMI cable), may be completed during the power-on handshake (e.g., the device identification phase of the HDMI CEC protocol), or may be received from the audio device after the display device 200 actively sends a request command. By obtaining the channel parameters of the audio equipment in advance, parameter negotiation during actual playback can be avoided, thereby improving the response speed of audio playback. In some embodiments, the first channel can be a 5.1.2 channel supported by the audio equipment (including left and right channels, center channel, left and right surround channels, subwoofer channel, and overhead channel, etc.). Next, the controller 250 is configured to determine a target sound combination scheme based on the first channel and the second channel supported by the display device. In some embodiments, the display device 200 itself (e.g., through its internal memory 2902) pre-stores or identifies its own supported second channel (e.g., 2.0 channels, i.e., the built-in left and right channel speakers). After obtaining the first channel parameters of the external audio equipment, the controller 250 will perform mutual exclusion allocation of channels in the underlying logic to avoid sound field chaos and phase cancellation problems caused by the display device 200 and the audio equipment playing the same channel simultaneously. The final determined target sound scheme indicates that the third channel in the second channel is used to play the target audio signal, and the fourth channel in the first channel is also used to play the target audio signal, and there are no channels of the same type in the third and fourth channels. For example, in the determined target sound scheme, the controller 250 assigns the "center channel" to the display device 200 (i.e., determines that the third channel includes the center channel, which is simulated by the left and right speakers of the display device itself), while assigning all "left and right channels, subwoofer channel, and surround channels" to the audio equipment (i.e., determines that the fourth channel includes the left and right channels, subwoofer channel, and surround channels, etc.). At this time, the third and fourth channels are completely mutually exclusive, and there are no channels of the same type.Subsequently, during the user-triggered playback execution phase, controller 250 is configured to: in response to the operation of playing the target audio signal, acquire the first audio signal corresponding to the third channel in the target audio signal based on the target harmonic scheme. For example, when a user clicks to play a multi-channel movie through user interface 280 (such as a remote control input command), display device 200 responds to the playback operation, and its internal audio processor 2505 extracts, decodes, or mixes the audio data belonging to the "third channel" (e.g., center channel) from the original movie target audio signal according to the pre-determined target harmonic scheme, as the first audio signal. Simultaneously, controller 250 is configured to: send target indication information, which instructs the audio equipment to play the second audio signal corresponding to the fourth channel in the target audio signal. In some embodiments, controller 250 sends the indication to the audio equipment via a communication line (such as an HDMI channel or a wireless network channel). In some embodiments, the target indication information may be to send the original target audio signal and the allocation information of the "fourth channel" together to the audio device, so that the audio device can extract the second audio signal itself; or, the audio processor 2505 of the display device 200 may directly transmit the extracted second audio signal to the audio device through the target indication information for synchronous decoding and playback. Finally, the controller 250 is configured to play the first audio signal. That is, the display device 200 plays the first audio signal containing only the "third channel" content through its own audio output interface 270 (such as the built-in speaker 2701), while the external audio device synchronously plays the second audio signal containing only the "fourth channel" content.

[0031] In some embodiments of this disclosure, the display device includes a controller configured to: in response to an operation of playing a target audio signal, if the display device supports a chord function, send a target request message, the target request message being used to request the audio capabilities and channel parameters of an audio device; receive a target response message corresponding to the target request message, the target response message carrying audio capability information and first parameter information of the audio device, the first parameter information being used to indicate a first channel supported by the audio device; if the audio capability information indicates that the audio device supports a chord function, determine a target chord scheme based on the first parameter information and second parameter information of the display device, the target chord... The scheme includes first channel allocation information and second channel allocation information. Second parameter information is used to indicate the second channel supported by the display device. The first channel allocation information is used to indicate the third channel in the second channel used to play the target audio signal. The second channel allocation information is used to indicate the fourth channel in the first channel used to play the target audio signal. There are no channels of the same type in the third channel and the fourth channel. Based on the target harmony scheme and the target audio signal, the first audio signal corresponding to the fourth channel in the target audio signal is obtained, and target indication information is sent. The target indication information is used to instruct the audio device to play the second audio signal corresponding to the fourth channel in the target audio signal; the first audio signal is played.

[0032] In some embodiments, the target audio signal is a multi-channel audio signal. A multi-channel audio signal refers to an audio signal containing multiple independent channels, each of which can carry different audio information, thereby providing listeners with a richer, more spatial, and immersive audio experience. The chorus function, also known as the joint sound function, refers to the function of two or more audio devices playing an audio signal together through their respective channel systems. It can be understood that, in response to the operation of playing the target audio signal, the display device, upon detecting a communication connection with the audio device and detecting that the display device supports the chorus function, sends a target request message to the audio device and receives a target response message from the audio device based on the target request message. In some embodiments of this disclosure, the audio capabilities and channel parameters of the audio device can be requested through a single request message, or two separate request messages can be used to request the audio capabilities and channel parameters of the audio device, depending on the actual situation, and are not limited here.

[0033] In some embodiments of this disclosure, the target request message includes a first request message and a second request message, and the target response message includes a first response message and a second response message. The process of requesting to obtain the audio capabilities and channel parameters of an audio device specifically includes: in response to the operation of playing a target audio signal, if the display device supports a chorus function, sending a first request message to the audio device, the first request message being used to request the audio capabilities of the audio device; receiving a first response message corresponding to the first request message from the audio device, the first response message carrying audio capability information of the audio device; if the audio capability information indicates that the audio device supports a chorus function, sending a second request message to the audio device, the second request message being used to request the channel parameters of the audio device; and receiving a second response message corresponding to the second request message from the audio device, the second response message carrying first parameter information, the first parameter information being used to indicate the first channel supported by the audio device. In some embodiments, the target request message may also include other request messages, and the target response message may also include other response messages, which are not limited here.

[0034] In some embodiments of this disclosure, based on the extended HDMI CEC communication protocol between a display device (such as a TV) and an audio device, the display device obtains the audio capabilities and channel parameters of the audio device through information interaction with the audio device, thereby determining the target harmonic scheme. This allows the display device and the audio device to jointly emit sound through different types of channels, thus avoiding channel overlap and poor sound quality caused by the display device and the audio device using the same type of channel to broadcast audio signals. In some embodiments of this disclosure, the following functions can be achieved by extending the manufacturer-customizable parts of the HDMI CEC communication protocol: 1. Adding an information interaction function to indicate whether harmonic function is supported. After receiving a first request message from the TV requesting the audio device's audio capabilities, the audio device responds. After both the TV and the audio device verify their identities during the CEC handshake, the TV can request the audio capabilities of the audio device, and the audio device responds correctly according to its own capabilities; 2. Adding an information interaction function to request the audio device's channel parameters. After the audio device and the TV communicate that harmonic function is supported, the TV requests the audio device's channel parameters. The channel parameters can be the device type, which represents the audio device's channel capabilities. In some embodiments of this disclosure, it is necessary to design information interaction instructions that conform to the HDMI CEC communication protocol, such as setting the format of a first request message, setting the format of a first response message, setting the format of a second request message, setting the format of a second response message, or setting the format of a target request message and setting the format of a target response message. In some embodiments of this disclosure, the audio device may also request the channel parameters of the TV, which is not limited here.

[0035] In some embodiments, the TV and the soundbar complete identity verification via CEC handshake (which can be done by matching the vendor ID or other methods, and is not limited here). If the TV supports chorus functionality, it requests the soundbar's audio capabilities (first request message). Upon receiving this request, the soundbar reports its audio capabilities (first response message). The TV parses whether the soundbar supports chorus functionality. If it does, it further requests the soundbar's channel parameters (second request message), and the soundbar responds according to its own audio capabilities. The TV can also proactively report its own channel parameters to the soundbar, which stores the TV's channel parameters upon receipt. In some embodiments, the first parameter information is used to indicate the first channel supported by the soundbar, and may include the soundbar's device type (e.g., 2.1 soundbar, 5.1 soundbar, etc.) or the type of channels supported by the soundbar (e.g., the speaker supports left-right-left-right channels, right-left-right channels, center channel, left surround channel, and right surround channel). The specific details can be determined according to the actual situation and are not limited here. In some embodiments, the first parameter information may also include other information, such as detailed parameter information of the channels supported by the audio device, for example, the low-frequency extension value (L) of the subwoofer channel. f The second parameter information includes parameters such as power (P), or the relative position information of channels (corresponding speakers) in audio equipment. The specific details can be determined based on actual usage requirements and are not limited here. The description of the second parameter information can refer to the above description of the first parameter information, and will not be repeated here.

[0036] In some embodiments of this disclosure, the first parameter information may further include the low-frequency extension value (L) of the subwoofer channel of the audio device. f The second parameter information may also include parameters such as power (P) and the low-frequency extension (L) of the subwoofer channel of the display device. f Information such as power (P) and other parameters allows the display device to combine the low-frequency extension (L) of the audio equipment, including the first channel and the subwoofer channel. f Information such as power (P) and other parameters, as well as the low-frequency extension (L) of the second channel and subwoofer channel of the display device. fThe display device determines the target harmony scheme based on parameters such as power (P) and subwoofer channel information, and determines whether the subwoofer channel in the target harmony scheme uses the subwoofer channel of the display device or the subwoofer channel of the audio device. In some embodiments of this disclosure, the first parameter information may further include the relative position information of the channels in the audio device, and the second parameter information may further include the relative position information of the channels in the display device. Thus, the display device can determine the target harmony scheme by combining the relative position information of the first channel included in the audio device and the relative position information of the channels in the audio device, as well as the relative position information of the second channel included in the display device and the channels in the display device. In some embodiments of this disclosure, the display device can determine the matching target harmony scheme from at least one preset harmony scheme based on the first parameter information and the second parameter information; the display device can also determine the matching harmony scheme by combining the first parameter information, the second parameter information, and the relative position information of the display device and the audio device, etc.; the specific determination can be made according to the actual situation, and is not limited here. In some embodiments, at least one preset harmony scheme may include preset harmony schemes corresponding to the display device and various types of audio devices, such as preset harmony schemes corresponding to the display device and 2.1 speaker systems, preset harmony schemes corresponding to the display device and 5.1 speaker systems, etc., which are not limited here. In some embodiments of this disclosure, the device type corresponding to the display device may be different, and the at least one preset harmony scheme stored in the display device may be different, which are not limited here.

[0037] In some embodiments of this disclosure, when both the display device and the audio device support harmonic playback, the display device determines a target harmonic playback scheme based on the acquired channel parameters of the audio device and its own channel parameters. This allows the display device and the audio device to jointly produce sound through different types of channels (the display device plays a first audio signal, and the audio device plays a second audio signal), thereby avoiding channel overlap and poor sound quality caused by the display device and the audio device using the same type of channel to play audio signals. In some embodiments of this disclosure, the controller performs the determination of the target harmonic playback scheme based on the first parameter information and the second parameter information of the display device. Specifically, this is configured to: determine the target harmonic playback scheme that matches the first parameter information from a plurality of preset harmonic playback schemes that match the second parameter information. It is understood that each preset synthesis scheme among the multiple preset harmony schemes stored in the display device matches the second parameter information, that is, the channels supported by the display device corresponding to each preset harmony scheme are the channels included in the first channel indicated by the second parameter information; the target harmony scheme is the channel supported by the audio device corresponding to the multiple preset harmony schemes, which are the channels included in the second channel indicated by the first parameter.

[0038] In some embodiments of this disclosure, if multiple preset harmony schemes include multiple candidate harmony schemes that match the first parameter information, the candidate harmony scheme with the most channels supported by the corresponding audio device can be selected from the multiple candidate harmony schemes to determine the target harmony scheme; alternatively, multiple candidate harmony schemes can be displayed to the user, who can then select the candidate harmony scheme that meets their needs as the target harmony scheme. The specific selection can be determined based on actual circumstances and is not limited here. In some embodiments of this disclosure, combining the first parameter information and the second channel information to determine the target harmony scheme from multiple preset harmony schemes can improve the efficiency of harmony scheme determination and enhance the user experience. In some embodiments of this disclosure, before the controller executes the process of obtaining the first audio signal corresponding to the fourth channel in the target audio signal based on the target harmony scheme and the target audio signal, and before sending the target indication information, it is further configured to: display first prompt information based on the target harmony scheme. The first prompt information is used to indicate the relative positional relationship between the display device and the audio device, and / or, the first prompt information is used to indicate the position of the third channel in the display device and the position of the fourth channel in the audio device. It is understood that the first prompt information can be used to indicate the relative positional relationship between the display device and the audio device; the first prompt information can also be used to indicate the relative positional relationship between the third channel in the display device and the fourth channel in the audio device; the first prompt information can also be used to indicate other information, which can be determined according to the actual situation and is not limited here. In some embodiments, the first prompt information can be text prompt information, voice prompt information, or image prompt information, and is not limited here.

[0039] In some embodiments of this disclosure, the display device is a TV. Based on the first parameter information obtained during the interaction between the TV and the audio equipment, and the second parameter information of the TV, the TV determines the target fusion scheme and presents the target fusion scheme through image prompts. The image prompts display the third channel of the TV, the fourth channel of the audio equipment, and the relative positional relationship between the third and fourth channels, as well as the relative positional relationship between the TV and the display device. In some embodiments, the TV is a Laser TV, and the audio equipment is a 4.1.2 audio system. Due to the hardware size limitations of the laser TV, the distance between the left and right channels is very close. Therefore, the left and right channels of the TV are suitable as the center channel. The satellite speakers of the 4.1.2 audio product can increase the width, surround sound, height, and sound field. Therefore, when the laser TV is connected to the 4.1.2 audio system, it defaults to the following mode, as shown in Figure 4: Laser Home Theater Mode: The third channel of the TV includes the center channel, and the fourth channel of the audio equipment includes the left and right channels, the subwoofer channel, the left surround channel, the right surround channel, the left sky channel, and the right sky channel. Here, the label "41" is used to indicate the components of the TV, and the label "42" is used to indicate the components of the audio equipment. After selecting this mode, the TV communicates with the audio equipment to notify the audio equipment of the second channel allocation information. The TV is responsible for distributing the corresponding channel data in the target audio signal to each channel based on the first channel allocation information. For example, the center channel data is synthesized through the left and right channels of the laser, and other data is processed by the audio equipment. The audio equipment can reasonably control its own channel status according to the second channel allocation information (such as mute the center channel or not process the data, and the left and right channels, subwoofer channel, left surround channel, right surround channel, left sky channel, and right sky channel play the corresponding channel audio signal in the target audio signal respectively). In some embodiments, the TV is a sky-sound TV, and the audio equipment is a 5.1 system. In a home environment, the TV is typically placed high, so the height of the TV, combined with the fact that the TV's sky-sound speakers are usually located near the top of the screen, can be used as the sky-sound channel. This can be achieved in Mode 1 (as shown in Figure 5, where "51" indicates the TV components and "52" indicates the audio equipment components): the TV's third channel includes the sky-sound channel, and the audio equipment's fourth channel includes left and right channels, a center channel, and left and right surround channels; or in Mode 2 (as shown in Figure 6): the TV's third channel includes left and right channels, a center channel, and a sky-sound channel, and the audio equipment's fourth channel includes left and right surround channels. Regardless of the selected mode, the TV communicates the second channel allocation information to the audio equipment through interaction. The TV is responsible for distributing the corresponding channel data from the target audio signal to each channel based on the first channel allocation information. The audio equipment can then rationally control its own channel status according to the second channel allocation information.In some embodiments, the TV is a 2.1.2 TV, and the audio device is a wireless 2.1 speaker. Taking advantage of the ease of placement of the wireless 2.1 speaker, its two channels can be used as left and right surround channels, forming a 4.1.2 channel configuration together with the TV. The accompanying image prompt is shown in Figure 7, where "71" indicates the TV component and "72" indicates the audio device component. The TV interacts with the audio device to notify it of the second channel allocation information. The TV is responsible for distributing the corresponding channel data in the target audio signal to each channel based on the first channel allocation information. The audio device can reasonably control its own channel state according to the second channel allocation information. In some embodiments of this disclosure, displaying the first prompt information helps users better understand the target sound scheme, improving the user experience.

[0040] The aforementioned preset harmonization scheme is a target harmonization scheme determined based on the channel parameters of the display device and the audio device. Although it solves the channel conflict problem, it only improves the user experience to a certain extent. Different relative positions of the display device and the audio device may require different harmonization schemes to achieve the best sound effect. For example, in some of the above embodiments, should mode 1, mode 2, or other modes be used? The judgment criterion can be the sound effect after combined sound production, and two important factors affecting the sound effect are sensitivity and channel distance difference.

[0041] In some embodiments of this disclosure, the controller performs a determination of a target harmony scheme based on first parameter information and second parameter information of the display device. Specifically, it is configured to: display a second prompt message, which prompts the user whether the relative positions between the display device, the audio device, and the remote control meet target conditions. These target conditions indicate that: a first perpendicular plane connecting the center of the left channel speaker and the center of the right channel speaker of the display device is parallel to a second perpendicular plane connecting the center of the left channel speaker and the center of the right channel speaker of the audio device; the central axis of the remote control is perpendicular to the first perpendicular plane; the minimum distance from the central axis to a first plane passing through the display device and perpendicular to the first perpendicular plane is less than or equal to a first distance; the minimum distance from the central axis to a second plane passing through the audio device and perpendicular to the second perpendicular plane is less than or equal to a second distance; and the distance from the center of the remote control to the center of the display device is greater than or equal to a third distance and less than or equal to a fourth distance, where the third distance is less than the fourth distance; in response to a received confirmation operation for the second prompt message, the controller controls the left and right channel speakers of the display device to sequentially play audio signals. The remote control sequentially receives a first sound signal from the left channel speaker of the display device and a second sound signal from the right channel speaker of the display device via the microphone; sends a control message to control the left and right channel speakers of the audio device to play audio signals sequentially; and sequentially receives a third sound signal from the left channel speaker of the audio device and a fourth sound signal from the right channel speaker of the audio device via the microphone of the remote control; based on the first, second, third, and fourth sound signals, it determines the display device... The left and right channel speakers of the equipment correspond to the first and second sound pressure levels, respectively, and the left and right channel speakers of the audio equipment correspond to the third and fourth sound pressure levels, respectively. When the first difference is greater than the second difference, it is determined that the third channel includes the left and right channels, and the fourth channel includes the center channel. The first difference is the difference between the first and second sound pressure levels, and the second difference is the difference between the third and fourth sound pressure levels. When the first difference is less than the second difference, it is determined that the third channel includes the center channel, and the fourth channel includes the left and right channels.

[0042] In some embodiments, the first and second perpendicular planes may coincide, and the minimum distance between the first and second perpendicular planes may be less than a distance threshold, which can be determined based on actual conditions and is not limited here. In some embodiments, the first plane is the plane closest to the central axis among the planes passing through the display device and perpendicular to the first perpendicular plane, and the second plane is the plane closest to the central axis among the planes passing through the audio device and perpendicular to the first perpendicular plane. The first distance may be greater than or equal to the second distance, or it may be less than the second distance, and is not limited here. The first, second, third, and fourth distances can be determined based on actual usage and are not limited here. To improve measurement accuracy, the optimal distance between the remote control microphone and the display device is between 0.4 meters and 1 meter. Therefore, the optimal distance range between the center of the remote control and the center of the display device can be determined based on the optimal distance range between the remote control microphone and the display device.

[0043] It is understood that in some embodiments of this disclosure, sensitivity and channel distance are measured using a microphone-enabled remote control of the display device. When the measurement is initiated, the user is prompted to set the relative positions of the display device, the audio device, and the remote control to meet the target conditions. Typically, the display device and audio device are centered, and the left and right channels are symmetrical. The distance between the speakers of the left and right channels of the display device compared to the distance between the speakers of the left and right channels of the audio device can result in three possibilities: greater than, equal to, or less than. As shown in Figure 8, once the relative positions of the display device, the audio device, and the remote control meet the target conditions, the measurement program sequentially controls the left and right channels of the display device, the left and right channels of the audio device to play audio signals. The microphone device records the collected sound signals of each channel and outputs the collected sound signals to the measurement program. The measurement program analyzes the sound signals to obtain the sound pressure level values ​​of the four channels (i.e., the first and second sound pressure levels corresponding to the left and right channel speakers of the display device, respectively, and the third and fourth sound pressure levels corresponding to the left and right channel speakers of the audio device, respectively), which are denoted as SL1, SL2, SL3, and SL4, respectively. The distances of the microphone from the left and right channel speakers of the display device and the left and right channel speakers of the audio device are L1, L2, L3, and L4, respectively. According to the relationship between the sound pressure level of a point source and distance in a free sound field, the following relationship can be obtained: SL1-SL2=20lg(L2 / L1)=20lg((L1+D1) / L1)=20lg(1+D1 / L1), SL3-SL4=20lg(L4 / L3)=20lg((L3+D2) / L3)=20lg(1+D2 / L3).

[0044] When the measurement program is started, the placement of the microphone on the remote control is predetermined, meaning L1 + D1 / 2 is a constant, and similarly, L3 + D2 / 2 is a constant. Therefore, the larger D1 is, the smaller L1 is, and the smaller D1 is, the larger L1 is; similarly, D2 and L3 follow the same rule. Therefore, according to the formula, the value of SL1 - SL2 depends entirely on D1, and the value of SL3 - SL4 depends entirely on D2. By comparing the values ​​of (SL1 - SL2) and (SL3 - SL4), the values ​​of D1 and D2 can be determined.

[0045] In summary, when the first difference (the difference between the first and second sound pressure levels) is greater than the second difference (the difference between the third and fourth sound pressure levels), since the distance between the left and right speakers of the display device is greater than the distance between the left and right speakers of the audio device, it is determined that the speakers of the display device are suitable for producing left and right channels. In this case, the target sound combination scheme selects the left and right channels of the display device to produce sound, and the center channel of the audio device to produce sound (i.e., the third channel includes the left and right channels, and the fourth channel includes the center channel). When the first difference is less than the second difference, since the distance between the left and right speakers of the display device is less than the distance between the left and right speakers of the audio device, the speakers of the display device are suitable for producing the center channel, and the speakers of the audio device are suitable for producing the left and right channels (i.e., the third channel includes the center channel, and the fourth channel includes the left and right channels).

[0046] In some embodiments of this disclosure, when it is determined that the third channel includes the left and right channels, and the fourth channel includes the center channel, the third channel may also include other channels, and the fourth channel may also include other channels. The specific details can be determined based on actual circumstances and are not limited here. In some embodiments of this disclosure, when it is determined that the third channel includes the center channel, and the fourth channel includes the left and right channels, the third channel may also include other channels, and the fourth channel may also include other channels. The specific details can be determined based on actual circumstances and are not limited here. In some embodiments of this disclosure, by setting the relative positions between the display device, the audio device, and the remote control to meet target conditions, and then measuring the sensitivity and channel distance of the display device and the audio device using the microphone of the remote control, the target sound combination scheme can be determined more accurately, and the sound effect of the combined sound output of the display device and the audio device can be improved.

[0047] In some embodiments of this disclosure, the controller is further configured to: determine a target difference when a first difference equals a second difference, the target difference being the difference between a first sound pressure level and a third sound pressure level, or the difference between a second sound pressure level and a fourth sound pressure level; determine that the third channel includes the center channel and the fourth channel includes the left and right channels when the target difference is greater than or equal to 0; and determine that the third channel includes the left and right channels and the fourth channel includes the center channel when the target difference is less than 0. It can be understood that if the distance between the left and right speakers of the display device is equal to the distance between the left and right speakers of the audio device, then the relationship between the sound pressure level value corresponding to the left speaker of the display device and the sound pressure level value of the left speaker of the audio device, or the relationship between the sound pressure level value corresponding to the right speaker of the display device and the sound pressure level value of the right speaker of the audio device, can be used to determine which of the display device and the audio device outputs the left and right channels and which outputs the center channel. In some embodiments, the sound pressure level value is used to characterize the intensity of the sound produced by the channel.

[0048] It can be understood that the target difference is the difference between the first and third sound pressure levels (i.e., SL1-SL3). If SL1-SL3>0, it means SL1>SL3, indicating that the loudness of the left speaker of the display device is high. If it is used as the center channel, the human voice will be clear. Therefore, it is determined that the left and right speakers of the display device are suitable as the center channel, and the left and right speakers of the audio device are suitable as the left and right channels (i.e., the third channel includes the center channel, and the fourth channel includes the left and right channels). Conversely, if SL1-SL3<0, it is determined that the left and right speakers of the display device are suitable as the left and right channels, and the left and right speakers of the audio device are suitable as the center channel (i.e., the third channel includes the left and right channels, and the fourth channel includes the center channel). In some embodiments of this disclosure, when the first difference equals the second difference, determining which of the third and fourth channels includes the left and right channels and which includes the center channel based on the target difference can determine a more accurate target sound combination scheme and improve the sound effect of the combined sound of the display device and the audio device.

[0049] In some embodiments of this disclosure, the first parameter information includes first bass parameter information, which indicates the first bass parameter value corresponding to the subwoofer channel of the audio device. The second parameter information includes second bass parameter information, which indicates the second bass parameter value corresponding to the subwoofer channel of the display device. The controller performs a determination of a target harmonic scheme based on the first parameter information and the second parameter information of the display device. Specifically, it is configured to: determine that the fourth channel includes the subwoofer channel if the first bass parameter value is greater than the second bass parameter value; and determine that the third channel includes the subwoofer channel if the first bass parameter value is less than the second bass parameter value. In some embodiments, the first bass parameter information may include the first bass parameter value, and may also include parameters such as the low-frequency extension (Lf) and power (P) used to determine the first bass parameter value. The specific details can be determined according to actual conditions and are not limited here. The description of the second bass parameter information can be found in the above description of the first bass parameter information, and will not be repeated here.

[0050] In some embodiments, the first bass parameter information includes low-frequency extension (Lf) and power (P), and the first bass parameter value can be determined according to the following formula: Lp=a*40 / Lf+(1-a)*P / 200;

[0051] Where 'a' is a weighting coefficient, a < 1; 'Lf' is the low-frequency extension value; 'P' is the power of the bass component; and 'Lp' is the bass parameter value. Table 1 below shows an example of how 'Lp' is calculated.

[0052] Table 1

[0053] Since a higher bass parameter value results in better sound quality for the subwoofer channel, the fourth channel is determined to include the subwoofer channel when the first bass parameter value is greater than the second bass parameter value; conversely, the third channel is determined to include the subwoofer channel when the first bass parameter value is less than the second bass parameter value. This allows for a more accurate determination of the subwoofer channel in the target sound combination scheme, improving the combined sound effect of the display and audio equipment. It can be understood that if only one of the display or audio equipment includes a subwoofer channel, that subwoofer channel is considered the subwoofer channel of the target sound combination scheme. If both the display and audio equipment include subwoofer channels, the relationship between the first and second bass parameter values ​​can be used to determine whether the subwoofer channel in the target sound combination scheme is the subwoofer channel of the display device or the subwoofer channel of the audio device.

[0054] In some embodiments, taking a TV with a 7.1.4 display device and a soundbar as an example, if SL1-SL2 > SL3-SL4, and the Lp values ​​of the TV and the soundbar are unknown, then the target sound combination scheme at least includes: left and right channels from the TV + center channel from the soundbar. Other channels can be determined based on the soundbar's device type. For example, assuming the soundbar is a 2.0 speaker, only the TV supports a subwoofer channel, so the target sound combination scheme also includes a subwoofer channel from the TV. In this case, the target sound combination scheme may also include a T... The target sound system may include left and right surround channels, a sky channel, etc., or may not include other channels. If SL1-SL2 > SL3-SL4, and the Lp of the TV is greater than the Lp of the soundbar, then the target sound system may include at least: left and right channels from the TV, a subwoofer channel + a center channel from the soundbar. If SL1-SL2 > SL3-SL4, and the Lp of the TV is less than the Lp of the soundbar, then the target sound system may include: left and right channels from the TV + a center channel and a subwoofer channel from the soundbar. Other channels are determined based on the type of audio equipment. For example, assuming the soundbar is a 2.1 speaker system, the target sound system may also include left and right surround channels and a sky channel from the TV, or may not include other channels. Assuming the soundbar is a 5.1 speaker system, the target sound system may also include left and right surround channels from the soundbar. In this case, the target sound system may also include a sky channel from the TV, or may not include other channels or a sky channel.

[0055] If SL1-SL2<SL3-SL4, and the Lp of the TV and the Lp of the Soundbar are unknown, the target surround sound scheme at least includes: the TV outputs the center channel + the Soundbar outputs the left and right channels, and other channels can be determined in combination with the device type of the Soundbar. For example, if the Soundbar is a 2.0 speaker, and only the TV supports the subwoofer channel, the target surround sound scheme further includes that the TV outputs the subwoofer channel. In this case, the target surround sound scheme may further include that the TV outputs left and right surround channels, sky audio channels, etc., or the target surround sound scheme does not include other channels; if SL1-SL2<SL3-SL4 and the Lp of the TV is greater than the Lp of the Soundbar, the target surround sound scheme at least includes: the TV outputs the center channel and the subwoofer channel + the Soundbar outputs the left and right channels; if SL1-SL2<SL3-SL4 and the Lp of the TV is less than the Lp of the Soundbar, the target surround sound scheme is: the TV outputs the center channel + the Soundbar outputs the left and right channels and the subwoofer channel, and other channels are determined in combination with the device type of the speaker. For example, if the Soundbar is a 2.1 speaker, in this case, the target surround sound scheme may further include that the TV outputs left and right surround channels, sky audio channels, etc., or the target surround sound scheme does not include other channels; if the Soundbar is a 5.1 speaker, the target surround sound scheme further includes that the Soundbar outputs the left and right surround channels, in this case, the target surround sound scheme may further include that the TV outputs sky audio channels, etc., or the target surround sound scheme does not include other sky audio channels.

[0056] In some embodiments of the present disclosure, if both a TV and an audio device include left and right surround channels or height channels, etc., the determination may be made according to the parameter conditions of the left and right surround channels or the parameter conditions of the height channels of the two devices, or may be made according to a preset solution, which is not limited herein. If SL1-SL2=SL3-SL4 and SL1>SL3, the TV outputs the center channel, and the Soundbar outputs the left and right channels; other channels may be determined in combination with the device type of the Soundbar. For example, assuming the Soundbar is a 2.0 audio system, and only the TV supports a subwoofer channel, the target surround sound solution further comprises the TV outputting the subwoofer channel; in this case, the target surround sound solution may further comprise the TV outputting left and right surround channels, height channels, etc., or the target surround sound solution does not include other channels. If SL1-SL2=SL3-SL4 and SL1<SL3, the TV outputs the left and right channels, and the Soundbar outputs the center channel; other channels may be determined in combination with the device type of the Soundbar. For example, assuming the Soundbar is a 2.1 audio system, if the Lp of the TV is greater than the Lp of the Soundbar, the target surround sound solution further comprises the TV outputting the subwoofer channel; if the Lp of the TV is less than the Lp of the Soundbar, the target surround sound solution further comprises the Soundbar outputting the subwoofer channel; in this case, the target surround sound solution may further comprise the TV outputting left and right surround channels, height channels, etc., or the target surround sound solution does not include other channels. Assuming the Soundbar is a 5.1 audio system, the target surround sound solution may further comprise the Soundbar outputting left and right surround channels; in this case, the target surround sound solution may further comprise the TV outputting height channels, etc., or the target surround sound solution does not include other height channels.

[0057] If SL1-SL2 = SL3-SL4 and SL1 = SL3, meaning the sound pressure levels of the TV and the left speaker of the soundbar are exactly the same, the target sound combination scheme can include the TV outputting the center channel, the speakers outputting the left and right channels, and the other channels can be determined based on the soundbar's device type. For example, assuming the soundbar is a 2.0 speaker system, and only the TV supports the subwoofer channel, the target sound combination scheme would also include the TV output subwoofer channel. In this case, the target sound combination scheme could also include the TV output left and right surround channels, sky channel, etc., or the target sound combination scheme might not include other channels. For example, assuming the soundbar is a 2.1 speaker system, if the TV's Lp is greater than the soundbar's Lp, the target sound combination scheme would also include the TV output subwoofer channel. If the TV's Lp is less than the soundbar's Lp, the target sound combination scheme would also include the soundbar output subwoofer channel. In this case, the target sound combination scheme could also include the TV output left and right surround channels, sky channel, etc., or the target sound combination scheme might not include other channels. Assuming the soundbar is a 5.1 speaker system, the target sound combination scheme could also include the soundbar output left and right surround channels. In this case, the target sound combination scheme could also include the TV output sky channel, etc., or the target sound combination scheme might not include other channels, such as the sky channel.

[0058] In some embodiments of this disclosure, the controller performs the following actions: based on the target harmony scheme and the target audio signal, it acquires the first audio signal corresponding to the fourth channel in the target audio signal and sends target indication information. Specifically, it is configured to: based on the target harmony scheme, separate the first audio signal and the second audio signal from the target audio signal; and send target indication information carrying the second audio signal. Thus, by having the display device separate the first audio signal and the second audio signal from the target audio signal based on the target harmony scheme, processing efficiency can be improved.

[0059] In some embodiments of this disclosure, the controller performs the following actions: based on the target harmonic scheme and the target audio signal, it acquires the first audio signal corresponding to the fourth channel in the target audio signal and sends target indication information. Specifically, it is configured to: separate the first audio signal from the target audio signal based on the target harmonic scheme; and send target indication information carrying second channel allocation information and the target audio signal, so that the audio device separates the second audio signal from the target audio signal based on the second channel allocation information and plays the second audio signal. In this way, the first audio signal is separated from the target audio signal by the display device, and the second audio signal is separated from the target audio signal by the audio device, thus reducing the processing load on the display device.

[0060] In some embodiments of this disclosure, the controller performs the following steps to determine a target harmony scheme based on first parameter information and second parameter information of the display device: determining multiple candidate harmony schemes based on the first parameter information and the second parameter information of the display device; displaying the multiple candidate harmony schemes; and determining the target harmony scheme in response to a selection operation among the multiple candidate harmony schemes. Thus, when multiple candidate harmony schemes can be determined based on the first parameter information and the second parameter information of the display device, the user can select a satisfactory candidate harmony scheme as the target harmony scheme, thereby improving the user experience.

[0061] In some embodiments of this disclosure, when there are multiple candidate harmony schemes, the user can trigger the display device to switch the harmony scheme by operation, such as switching from the target harmony scheme to another candidate harmony scheme. The user obtains the third channel allocation information corresponding to the display device and the fourth channel allocation information corresponding to the audio device included in the other candidate harmony scheme. The display device then notifies the audio device of the fourth channel allocation information through interaction with the audio device. Based on the switched third channel allocation information, the display device distributes the corresponding channel data in the target audio signal to each channel. The audio device can distribute the corresponding channel data in the target audio signal to each channel according to the fourth channel allocation information.

[0062] This disclosure provides some embodiments of a processing logic and audio signal playback interaction for an audio device (e.g., the audio device labeled 42 in Figures 4 to 7, such as a soundbar, a home theater audio system with an external subwoofer, etc.). This audio device, as a cooperating execution end in a combined sound system, works in conjunction with a display device (such as a television) in the aforementioned embodiments. The audio device includes an internal communication interface, an audio processing module (such as a DSP chip), a power amplifier module, a speaker array, and a controller. The controller can execute the following process: First, during the device collaboration handshake and parameter reporting phase, the controller is configured to send the audio device's channel parameters, which indicate the first channel supported by the audio device. In some embodiments, when the audio device establishes a connection with the display device via an HDMI interface, a WiFi module, or a Bluetooth module, the audio device's controller sends its own channel parameters to the display device through the corresponding communication protocol. In some embodiments, this sending action can be an active broadcast (reporting) when the physical connection is established or the device is powered on, or a passive response after receiving a query request from the display device. This channel parameter indicates the "first channel" capability of the audio equipment hardware (e.g., supporting 5.1.2 channels, including left and right channels, center channel, subwoofer channel, and surround and overhead channels). The audio equipment sends this channel parameter so that the display device can calculate and determine the target sound combination scheme at the main control terminal based on the first channel and the second channels supported by the display device. In this target sound combination scheme, the display device will be responsible for the "third channel" in its own second channel, while the audio equipment will be assigned to be responsible for the "fourth channel" in its first channel (e.g., the display device is responsible for the center channel, and the audio equipment is responsible for the left, right, surround, and subwoofer channels). The system's underlying logic ensures that there are no channels of the same type in the third and fourth channels, thereby avoiding sound wave interference or phase cancellation during joint sound production. Secondly, during the user-triggered playback collaborative execution phase, the controller is configured to receive target indication information, which indicates that when the display device plays the first audio signal corresponding to the third channel in the target audio signal, the audio equipment will synchronously play the second audio signal corresponding to the fourth channel in the target audio signal. In some embodiments, the target indication information is an execution signal or audio data stream sent by the display device to the audio device in response to a user-triggered playback operation (e.g., the user clicking to play a multi-channel movie), based on the previously determined target harmonies scheme. In this case, the audio device, acting as a coordinating end of the combined sound system, receives the target indication information.In some embodiments, the target indication information can be directly the "second audio signal" data stream that the display device has already stripped (separated) based on the target harmonic scheme, containing only the fourth channel data. In some embodiments, the target indication information can also be the complete "target audio signal" plus the "assignment tag / configuration table of the fourth channel," which the audio processing module (DSP) of the audio device itself separates its own "second audio signal" from the complete audio signal according to the assignment tag. By receiving the target indication information, the audio device knows that the display device is currently playing the first audio signal (third channel) and needs to enter the clock synchronization mode to prepare for synchronized sound generation. Finally, in the physical sound generation stage, the controller is configured to play the second audio signal. That is, the controller of the audio device drives the internal digital-to-analog converter (DAC) and power amplifier to control its corresponding physical speaker array (i.e., the speakers corresponding to the fourth channel, such as the left and right main speakers, subwoofer, etc.) to play the separated second audio signal. Because the second audio signal (such as left and right background sounds) and the first audio signal played by the display device (such as center voice) are completely mutually exclusive in terms of physical channels, the two are perfectly integrated in the spatial sound field, achieving a highly immersive and conflict-free joint sound experience.

[0063] This disclosure provides an audio device, including: a controller configured to: receive a target request message, the target request message being used to request the audio capabilities and channel parameters of the audio device, the target request message being generated by a display device in response to an operation of playing a target audio signal, provided that the display device supports a chord function; and send a target response message corresponding to the target request message, the target response message carrying audio capability information and first parameter information of the audio device, so that the display device, when the audio capability information indicates that the audio device supports a chord function, determines a target chord scheme based on the first parameter information and second parameter information of the display device, the target chord scheme including first channel allocation information and second channel allocation information, the first parameter information being used for... The system includes: a first channel supported by the audio device; a second parameter information indicating a second channel supported by the display device; a first channel allocation information indicating a third channel in the second channel used for playing the target audio signal; a second channel allocation information indicating a fourth channel in the first channel used for playing the target audio signal; and no channels of the same type in the third and fourth channels. It also receives target indication information indicating that when the display device plays the first audio signal corresponding to the fourth channel in the target audio signal, the audio device will simultaneously play the second audio signal corresponding to the fourth channel in the target audio signal. The target indication information and the first audio signal are based on the target harmonic scheme and the target audio signal. Finally, it plays the second audio signal.

[0064] In some embodiments of this disclosure, the target indication information carries a second audio signal, which is separated from the target audio signal by the display device based on the target harmonic scheme; or, the target indication information carries second channel allocation information and the target audio signal, and after the controller receives the target indication information, it is further configured to separate the second audio signal from the target audio signal based on the second channel allocation information. In some embodiments of this disclosure, the process of implementing joint sound generation for the audio equipment can be referred to the above detailed description of the process of implementing joint sound generation for the display device, and will not be repeated here.

[0065] Referring to Figure 9, in some embodiments, the system is divided into four layers, from top to bottom: the Applications layer 901 (hereinafter referred to as the "Application Layer"), the Application Framework layer 902 (hereinafter referred to as the "Framework Layer"), the Android runtime and system library layer 903 (hereinafter referred to as the "System Runtime Library Layer"), and the kernel layer 904. In some embodiments, at least one application runs in the Application Layer. These applications can be Windows programs, system settings programs, or clock programs that come with the operating system; they can also be applications developed by third-party developers. In some embodiments, the application packages in the Application Layer are not limited to the examples above. The Framework Layer provides the application programming interface (API) and programming framework for the applications. The Application Framework Layer includes some predefined functions. The Application Framework Layer acts as a processing center, which determines the actions of the applications in the Application Layer. Through the API interface, applications can access system resources and obtain system services during execution.

[0066] As shown in Figure 9, in some embodiments of this disclosure, the application framework layer includes managers, content providers, etc., wherein the managers include at least one of the following modules: an Activity Manager for interacting with all activities running in the system; a Location Manager for providing system services or applications with access to system location services; a Package Manager for retrieving various information related to application packages currently installed on the device; a Notification Manager for controlling the display and clearing of notification messages; and a Window Manager for managing icons, windows, toolbars, wallpapers, and desktop widgets on the user interface. In some embodiments, the Activity Manager is used to manage the lifecycle of each application and common navigation and back functions, such as controlling application exit, opening, and back. The Window Manager is used to manage all window programs, such as obtaining the screen size, determining whether there is a status bar, locking the screen, capturing the screen, and controlling changes to the display window (e.g., shrinking the display window, shaking the display, distorting the display, etc.). In some embodiments, the system runtime library layer provides support for the upper framework layer. When the framework layer is used, the Android operating system runs the C / C++ libraries contained in the system runtime library layer to implement the functions required by the framework layer. In some embodiments, the kernel layer is the layer between hardware and software. As shown in Figure 9, the kernel layer includes at least one of the following drivers: audio driver, display driver, Bluetooth driver, camera driver, Wi-Fi driver, USB driver, HDMI driver, sensor driver (such as fingerprint sensor, temperature sensor, pressure sensor, etc.), and power driver, etc.

[0067] To illustrate this solution in more detail, the following description will be provided in conjunction with Figures 10 to 13. It is understood that the steps involved in Figures 10 to 13 may include more or fewer steps in actual implementation, and the order of these steps may also differ, as long as the audio signal playback method provided in some embodiments of this disclosure can be achieved. For a detailed description of the audio signal playback method provided in some embodiments of this disclosure, please refer to the relevant description of the above-described display device, which can achieve the same or similar technical effects, and will not be repeated here.

[0068] Figure 10 is a flowchart of the steps of implementing an audio signal playback method according to some embodiments of the present disclosure. The audio signal playback method may include the following steps S1001 to S1009.

[0069] S1001. In response to the operation of playing the target audio signal, if the display device supports the chorus function, a target request message is sent.

[0070] In some embodiments, the target request message is used to request the audio capabilities of an audio device and the channel parameters of the audio device.

[0071] S1002, The audio equipment receives the target request message.

[0072] The target request message is used to request the audio capabilities and channel parameters of the audio device. The target request message is generated by the display device in response to the operation of playing the target audio signal, provided that the display device supports the chorus function.

[0073] S1003, The audio equipment sends a target response message corresponding to the target request message.

[0074] In some embodiments, the target response message carries audio capability information and first parameter information of the audio device, so that the display device, when the audio capability information indicates that the audio device supports harmonic function, determines a target harmonic scheme based on the first parameter information and the second parameter information of the display device. The target harmonic scheme includes first channel allocation information and second channel allocation information. The first parameter information is used to indicate the first channel supported by the audio device, the second parameter information is used to indicate the second channel supported by the display device, the first channel allocation information is used to indicate the third channel in the second channel used for playing the target audio signal, and the second channel allocation information is used to indicate the fourth channel in the first channel used for playing the target audio signal. There are no channels of the same type in the third channel and the fourth channel.

[0075] S1004. The display device receives the target response message corresponding to the target request message.

[0076] In some embodiments, the target response message carries audio capability information of the audio device and first parameter information, the first parameter information being used to indicate the first channel supported by the audio device.

[0077] S1005. When the audio capability information indicates that the audio device supports the harmony function, the display device determines the target harmony scheme based on the first parameter information and the second parameter information of the display device.

[0078] In some embodiments, the target chord scheme includes first channel allocation information and second channel allocation information, second parameter information for indicating the second channel supported by the display device, first channel allocation information for indicating the third channel in the second channel for playing the target audio signal, second channel allocation information for indicating the fourth channel in the first channel for playing the target audio signal, and the third channel and the fourth channel do not have the same type of channel.

[0079] S1006. The display device, based on the target harmonic scheme and the target audio signal, acquires the first audio signal corresponding to the fourth channel in the target audio signal and sends target indication information.

[0080] In some embodiments, the target indication information is used to instruct the audio device to play the second audio signal in the target audio signal that corresponds to the fourth channel;

[0081] S1007, The display device plays the first audio signal.

[0082] S1008, The audio equipment receives the target indication information.

[0083] In some embodiments, the target indication information is used to indicate that when the display device plays the first audio signal corresponding to the fourth channel in the target audio signal, the audio device synchronously plays the second audio signal corresponding to the fourth channel in the target audio signal. The target indication information and the first audio signal are based on the target harmony scheme and the target audio signal by the display device.

[0084] S1009, The audio equipment plays the second audio signal.

[0085] In some embodiments of this disclosure, referring to FIG10 and FIG11, the above-mentioned S1005 can be specifically implemented by the following S1005a.

[0086] S1005a The display device determines the target harmony scheme that matches the first parameter information from a plurality of preset harmony schemes that match the second parameter information.

[0087] In some embodiments of this disclosure, as shown in FIG11 and FIG12, before S1006, the audio signal playback method provided in some embodiments of this disclosure may further include the following S1010.

[0088] S1010, The display device displays the first prompt information based on the target harmony scheme.

[0089] In some embodiments, the first prompt information is used to inform the user of the relative positional relationship between the display device and the audio device, and / or, the first prompt information is used to inform the user of the position of the third channel in the display device and the position of the fourth channel in the audio device.

[0090] In some embodiments of this disclosure, referring to FIG10 and FIG13, the above-mentioned S1005 can be specifically implemented by the following S1005b to S1005h.

[0091] S1005b, The display device displays the second prompt information.

[0092] In some embodiments, the second prompt information is used to prompt the user whether the relative positions between the display device, the audio device, and the remote control meet the target conditions. The target conditions are used to indicate that: the first perpendicular plane of the line connecting the center of the left channel speaker and the center of the right channel speaker of the display device is parallel to the second perpendicular plane of the line connecting the center of the left channel speaker and the center of the right channel speaker of the audio device; the central axis of the remote control is perpendicular to the first perpendicular plane; and the minimum distance from the central axis to the first plane passing through the display device and perpendicular to the first perpendicular plane is less than or equal to the first distance; the minimum distance from the central axis to the second plane passing through the audio device and perpendicular to the second perpendicular plane is less than or equal to the second distance; and the distance from the center of the remote control to the center of the display device is greater than or equal to the third distance and less than or equal to the fourth distance, wherein the third distance is less than the fourth distance.

[0093] S1005c: In response to the received confirmation operation for the second prompt information, the display device controls the left and right channel speakers of the display device to play audio signals in sequence, and receives the first sound signal emitted by the left channel speaker of the display device and the second sound signal emitted by the right channel speaker of the display device in sequence through the microphone of the remote control.

[0094] S1005d, The display device sends a control message.

[0095] In some embodiments, the control message is used to control the left and right channel speakers of the audio device to play audio signals sequentially.

[0096] S1005e, the display device receives, sequentially via the microphone of the remote control, the third sound signal emitted by the left channel speaker of the audio device and the fourth sound signal emitted by the right channel speaker of the audio device.

[0097] S1005f: The display device determines the first sound pressure level and the second sound pressure level corresponding to the left and right channel speakers of the display device, respectively, and the third and fourth sound pressure levels corresponding to the left and right channel speakers of the audio device, respectively, based on the first sound signal, the second sound signal, the third sound signal, and the fourth sound signal.

[0098] S1005g, the display device determines that the third channel includes the left channel and the right channel, and the fourth channel includes the center channel, when the first difference is greater than the second difference.

[0099] In some embodiments, the first difference is the difference between the first sound pressure level and the second sound pressure level, and the second difference is the difference between the third sound pressure level and the fourth sound pressure level.

[0100] S1005h, the display device determines that the third channel includes the center channel and the fourth channel includes the left channel and the right channel when the first difference is less than the second difference.

[0101] In some embodiments of this disclosure, the above-mentioned S1005 can be specifically implemented by the following S1005i to S1005k.

[0102] S1005i, the display device determines the target difference when the first difference equals the second difference.

[0103] In some embodiments, the target difference is the difference between the first sound pressure level and the third sound pressure level, or the difference between the second sound pressure level and the fourth sound pressure level.

[0104] S1005j, When the target difference is greater than or equal to 0, the display device determines that the third channel includes the center channel and the fourth channel includes the left and right channels.

[0105] S1005k, the display device determines that the third channel includes the left and right channels, and the fourth channel includes the center channel, when the target difference is less than 0.

[0106] In some embodiments of this disclosure, the first parameter information includes first bass parameter information, which is used to indicate the first bass parameter value corresponding to the subwoofer channel of the audio device. The second parameter information includes second bass parameter information, which is used to indicate the second bass parameter value corresponding to the subwoofer channel of the display device. The above S1005 can be specifically implemented by the following S1005l to S1005m.

[0107] S1005l: If the display device determines that the fourth channel includes the subwoofer channel when the first bass parameter value is greater than the second bass parameter value.

[0108] S1005m, the display device determines that the third channel includes the subwoofer channel when the first bass parameter value is less than the second bass parameter value.

[0109] In some embodiments of this disclosure, the above-described S1006 can be specifically implemented by the following S1006a to S1006b. S1006a: The display device, based on the target harmonic scheme, separates the first audio signal and the second audio signal from the target audio signal.

[0110] S1006b, The display device sends target indication information, which carries a second audio signal.

[0111] In some embodiments, the target indication information carries a second audio signal, which is separated from the target audio signal by the display device based on the target harmony scheme.

[0112] In some embodiments of this disclosure, the above-mentioned S1006 can be specifically implemented by the following S1006c to S1006d.

[0113] S1006c, The display device separates the first audio signal from the target audio signal based on the target harmonic scheme.

[0114] S1006d, The display device sends target indication information.

[0115] The target indication information carries the second channel allocation information and the target audio signal, so that the audio device can separate the second audio signal from the target audio signal based on the second channel allocation information and play the second audio signal.

[0116] In some embodiments of this disclosure, the above-mentioned S1005 can be specifically implemented by the following S1005n to S1005p. In S1005n, the display device determines multiple candidate harmony schemes based on the first parameter information and the second parameter information of the display device.

[0117] S1005o, the display device showcases these multiple candidate harmonic solutions.

[0118] S1005p, the display device, in response to the selection operation of the target harmony scheme among the multiple candidate synthesis schemes, determines the target harmony scheme.

[0119] In some embodiments of this disclosure, the description of the implementation process of the above-described audio signal playback method can be found in the detailed description of the implementation of the joint sound generation process of the display device described above, and will not be repeated here.

[0120] This disclosure also provides a computer-readable storage medium storing a computer program. When executed by a processor, the computer program implements the various processes of the aforementioned audio signal playback method and achieves the same technical effect. To avoid repetition, further details are omitted here. The computer-readable storage medium can be a read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc. Some embodiments of this disclosure also provide a computer program product, comprising: when the computer program product is run on a computer, causing the computer to implement the aforementioned audio signal playback method.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.

[0122] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A display device, comprising: The controller is configured as follows: Obtain the channel parameters of the audio device, wherein the channel parameters are used to indicate the first channel supported by the audio device; Based on the first channel and the second channel supported by the display device, a target chord scheme is determined. The target chord scheme indicates a third channel in the second channel for playing the target audio signal and a fourth channel in the first channel for playing the target audio signal, and there are no channels of the same type in the third channel and the fourth channel. In response to the operation of playing the target audio signal, based on the target harmony scheme, the first audio signal corresponding to the third channel in the target audio signal is obtained; Send target indication information, the target indication information being used to instruct the audio device to play the second audio signal in the target audio signal that corresponds to the fourth channel; Play the first audio signal.

2. The display device according to claim 1, wherein, The controller is also configured to: Send a request message, the request message being used to obtain the audio capabilities and channel parameters of the audio device; Receive a response message corresponding to the request message, the response message carrying audio capability information and the channel parameters; If the audio capability information indicates that the audio device supports harmonic function, the process of determining the target harmonic scheme based on the first channel and the second channel supported by the display device is executed.

3. The display device according to claim 2, wherein, The request message includes a first request message and a second request message, and the response message includes a first response message and a second response message; The controller is also configured to: Send the first request message, which is used to request the audio capability of the audio device; Receive the first response message corresponding to the first request message, wherein the first response message carries the audio capability information; When the audio capability information indicates that the audio device supports the harmonic function, a second request message is sent, which is used to request the channel parameters of the audio device. Receive the second response message corresponding to the second request message, the second response message carrying the audio channel parameters.

4. The display device according to claim 2 or 3, wherein, The controller is also configured to: In response to the operation of playing the target audio signal, the request message is sent.

5. The display device according to any one of claims 1 to 3, wherein, The target harmony scheme includes first channel allocation information and second channel allocation information; The controller is further configured to: determine the target harmony scheme based on the first parameter information included in the channel parameters and the second parameter information corresponding to the display device; the first parameter information indicates the first channel and the second parameter information indicates the second channel; The first channel allocation information is used to indicate the third channel in the second channel used for playing the target audio signal, and the second channel allocation information is used to indicate the fourth channel in the first channel used for playing the target audio signal.

6. The display device according to claim 5, wherein, The controller is also configured to: From a plurality of preset harmony schemes that match the second parameter information, a target harmony scheme that matches the first parameter information is determined.

7. The display device according to claim 6, wherein, The controller is also configured to: Based on the target sound combination scheme, a first prompt message is displayed. The first prompt message is used to prompt the user about the relative positional relationship between the display device and the audio device, and / or, the first prompt message is used to prompt the user about the position of the third channel in the display device and the position of the fourth channel in the audio device.

8. The display device according to claim 1, wherein, The controller is also configured to: The system displays a second prompt message to indicate whether the relative positions of the display device, the audio device, and the remote control meet target conditions. The target conditions indicate that: the first perpendicular plane of the line connecting the center of the left channel speaker and the center of the right channel speaker of the display device is parallel to the second perpendicular plane of the line connecting the center of the left channel speaker and the center of the right channel speaker of the audio device; the central axis of the remote control is perpendicular to the first perpendicular plane; the minimum distance from the central axis to the first plane passing through the display device and perpendicular to the first perpendicular plane is less than or equal to the first distance; the minimum distance from the central axis to the second plane passing through the audio device and perpendicular to the second perpendicular plane is less than or equal to the second distance; and the distance from the center of the remote control to the center of the display device is greater than or equal to the third distance and less than or equal to the fourth distance, wherein the third distance is less than the fourth distance. In response to the received confirmation operation for the second prompt information, the left and right channel speakers of the display device are controlled to play audio signals in sequence, and the microphone of the remote control is used to receive the first sound signal emitted by the left channel speaker of the display device and the second sound signal emitted by the right channel speaker of the display device in sequence. Send a control message, the control message being used to control the left channel speaker and right channel speaker of the audio equipment to play audio signals sequentially; The remote control microphone sequentially receives the third sound signal emitted by the left channel speaker of the audio equipment and the fourth sound signal emitted by the right channel speaker of the audio equipment. Based on the first sound signal, the second sound signal, the third sound signal and the fourth sound signal, determine the first sound pressure level and the second sound pressure level corresponding to the left channel speaker and the right channel speaker of the display device, respectively, and the third sound pressure level and the fourth sound pressure level corresponding to the left channel speaker and the right channel speaker of the audio device, respectively. If the first difference is greater than the second difference, it is determined that the third channel includes the left channel and the right channel, and the fourth channel includes the center channel. The first difference is the difference between the first sound pressure level and the second sound pressure level, and the second difference is the difference between the third sound pressure level and the fourth sound pressure level. If the first difference is less than the second difference, it is determined that the third channel includes the center channel, and the fourth channel includes the left channel and the right channel.

9. The display device according to claim 8, wherein, The controller is also configured to: If the first difference is equal to the second difference, a target difference is determined, wherein the target difference is the difference between the first sound pressure level and the third sound pressure level, or the difference between the second sound pressure level and the fourth sound pressure level; If the target difference is greater than or equal to 0, it is determined that the third channel includes the center channel and the fourth channel includes the left channel and the right channel. If the target difference is less than 0, the third channel is determined to include the left and right channels, and the fourth channel includes the center channel.

10. The display device according to claim 8 or 9, wherein, The audio device's channel parameters include first bass parameter information, which indicates the first bass parameter value corresponding to the subwoofer channel of the audio device. The display device has second bass parameter information, which indicates the second bass parameter value corresponding to the subwoofer channel of the display device. The controller is further configured to: If the first bass parameter value is greater than the second bass parameter value, it is determined that the fourth channel includes a subwoofer channel; If the first bass parameter value is less than the second bass parameter value, the third channel is determined to include a subwoofer channel.

11. The display device according to claim 5, wherein, The controller is also configured to: Based on the target harmony scheme, the first audio signal and the second audio signal are separated from the target audio signal; Send target indication information, wherein the target indication information carries the second audio signal; or, Based on the target harmony scheme, the first audio signal is separated from the target audio signal; Send target indication information, the target indication information carrying the second channel allocation information and the target audio signal, so that the audio device can separate the second audio signal from the target audio signal based on the second channel allocation information and play the second audio signal.

12. An audio device, comprising: The controller is configured as follows: The audio device sends channel parameters, which indicate the first channel supported by the audio device, so that the display device determines a target harmony scheme based on the first channel and the second channel supported by the display device. The target harmony scheme indicates a third channel in the second channel for playing the target audio signal and a fourth channel in the first channel for playing the target audio signal, and there are no channels of the same type in the third channel and the fourth channel. Receive target indication information, the target indication information being used to indicate that when the display device plays the first audio signal corresponding to the third channel in the target audio signal, the audio device synchronously plays the second audio signal corresponding to the fourth channel in the target audio signal, the target indication information being sent by the display device in response to the operation of playing the target audio signal, based on the target harmony scheme; Play the second audio signal.

13. The audio device according to claim 12, wherein, The controller is also configured to: before sending the channel parameters of the audio device. Receive a request message sent by the display device, the request message being used to obtain the audio capabilities and channel parameters of the audio device; Send a response message corresponding to the request message, the response message carrying audio capability information and the channel parameters, so that the display device can determine the target harmony scheme when the audio capability information indicates that the audio device supports harmony function.

14. The audio device according to claim 13, wherein, The request message includes a first request message and a second request message, and the response message includes a first response message and a second response message; the controller is configured to: The first request message sent by the display device is received, and the first request message is used to request the sound capability of the audio device; Send the first response message corresponding to the first request message, the first response message carrying the audio capability information, so that the display device sends the second request message when the audio capability information indicates that the audio device supports the harmonic function; Receive the second request message, which is used to request the channel parameters of the audio device; Send the second response message corresponding to the second request message, the second response message carrying the audio channel parameters.

15. The audio device according to claim 13 or 14, wherein, The request message is sent by the display device in response to an operation to play the target audio signal.

16. The audio device according to any one of claims 12 to 14, wherein, The target harmony scheme includes first channel allocation information and second channel allocation information; The channel parameters include first parameter information, which is used to indicate the first channel, so that the display device determines the target harmony scheme based on the first parameter information and the second parameter information corresponding to the display device. The first channel allocation information is used to indicate the third channel in the second channel used for playing the target audio signal, and the second channel allocation information is used to indicate the fourth channel in the first channel used for playing the target audio signal.

17. The audio device according to claim 16, wherein, The controller is also configured to: after receiving the target indication information... If the target indication information carries the second audio signal, the second audio signal is acquired; or, When the target indication information carries the second channel allocation information and the target audio signal, the second audio signal is separated from the target audio signal based on the second channel allocation information.

18. An audio signal playback method, applied to a display device, comprising: Obtain the channel parameters of the audio device, wherein the channel parameters are used to indicate the first channel supported by the audio device; Based on the first channel and the second channel supported by the display device, a target chord scheme is determined. The target chord scheme indicates a third channel in the second channel used to play the target audio signal and a fourth channel in the first channel used to play the target audio signal, and there are no channels of the same type in the third channel and the fourth channel. In response to the operation of playing the target audio signal, based on the target harmony scheme, the first audio signal corresponding to the third channel in the target audio signal is obtained; Send target indication information, the target indication information being used to instruct the audio device to play the second audio signal in the target audio signal that corresponds to the fourth channel; Play the first audio signal.

19. An audio signal playback method, applied to an audio device, comprising: The audio device sends channel parameters, which indicate the first channel supported by the audio device, so that the display device determines a target harmony scheme based on the first channel and the second channel supported by the display device. The target harmony scheme indicates a third channel in the second channel for playing the target audio signal and a fourth channel in the first channel for playing the target audio signal, and there are no channels of the same type in the third channel and the fourth channel. Receive target indication information, the target indication information being used to indicate that when the display device plays the first audio signal corresponding to the third channel in the target audio signal, the audio device synchronously plays the second audio signal corresponding to the fourth channel in the target audio signal, the target indication information being sent by the display device in response to the operation of playing the target audio signal, based on the target harmony scheme; Play the second audio signal.

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