Channel mapping methods, devices, in-vehicle playback equipment, vehicles, and storage media

Abstract

This disclosure relates to a channel mapping method, apparatus, in-vehicle playback device, and storage medium, which can solve the problem of severe loss of sound directionality of immersive audio in front-seat or rear-seat playback modes. The method includes: determining the playback mapping relationship of the in-vehicle playback device according to the target playback mode; in front-seat playback mode, the playback mapping relationship includes: mapping the first left parameter channel of the immersive audio to the second left parameter channel located in the front of the vehicle, and mapping the first right parameter channel of the immersive audio to the second right parameter channel located in the front of the vehicle; in rear-seat playback mode, the playback mapping relationship includes: mapping the first left parameter channel to the third left parameter channel located in the rear of the vehicle, and mapping the first right parameter channel to the third right parameter channel located in the rear of the vehicle.

Description

Technical Field

[0001] This disclosure relates to the field of intelligent vehicle technology, and in particular to a channel mapping method, apparatus, in-vehicle playback device, vehicle, and storage medium. Background Technology

[0002] As cars become more functional, people's requirements for them are no longer limited to just a means of transportation. More entertainment devices are being introduced into in-car systems, among which in-car playback devices are particularly popular.

[0003] However, with the continuous optimization of car audio systems, simply playing audio signals throughout the vehicle is no longer sufficient to meet user needs. Therefore, current cars typically feature front-seat and rear-seat playback modes. In front-seat mode, only the channels located in the front of the vehicle are active, while the channels in the rear are inactive, allowing audio signals to be played in the front while providing a relatively quiet environment in the rear. Conversely, in rear-seat mode, only the channels in the rear of the vehicle are active, while the channels in the front are inactive, again allowing audio signals to be played in the rear while providing a relatively quiet environment in the front.

[0004] Currently, when playing surround sound audio in the whole-vehicle playback mode, the surround sound effect can be achieved. However, in the front or rear seat playback modes, the sound directionality of the surround sound audio is severely lost. Summary of the Invention

[0005] This disclosure provides a channel mapping method, apparatus, in-vehicle playback device, vehicle, and storage medium, which can comprehensively diagnose vehicle faults and solve the problem in the prior art that the sound directionality of panoramic audio is severely lost when the vehicle is in front-seat playback mode or rear-seat playback mode.

[0006] A first aspect of this application provides a channel mapping method applied to an in-vehicle playback device. The method includes: acquiring a target playback mode of the in-vehicle playback device; determining a playback mapping relationship of the in-vehicle playback device based on the target playback mode, wherein the playback mapping relationship is used to indicate the correspondence between the channels of the panoramic sound audio and the channels of the in-vehicle playback device; and controlling the in-vehicle playback device to play panoramic sound audio based on the playback mapping relationship.

[0007] Specifically, when the target playback mode is the front-row playback mode, the playback mapping relationship includes:

[0008] The first left parameter channel of the immersive sound audio is mapped to the second left parameter channel of the in-vehicle playback device located in the front row of the vehicle, and the first right parameter channel of the immersive sound audio is mapped to the second right parameter channel of the in-vehicle playback device located in the front row of the vehicle. The second left parameter channel includes at least the left front door channel, and the second right parameter channel includes at least the right front door channel; or...

[0009] When the target playback mode is the back-row playback mode, the playback mapping relationship includes:

[0010] The first left parameter channel is mapped to the third left parameter channel in the vehicle playback device located in the rear of the vehicle, and the first right parameter channel is mapped to the third right parameter channel in the vehicle playback device located in the rear of the vehicle. The third left parameter channel includes at least the left rear door channel, and the third right parameter channel includes at least the right rear door channel.

[0011] Optionally, when the target playback mode is the front-row playback mode, the playback mapping relationship also includes:

[0012] If the vehicle has a first center channel in the front row, the center channel of the surround sound audio will be mapped to the first center channel; if the vehicle does not have a center channel in the front row, the center channel of the surround sound audio will be mapped to the left front door channel and the right front door channel.

[0013] Optionally, when the target playback mode is the front-row playback mode, the playback mapping relationship also includes:

[0014] If the vehicle has a first subwoofer channel in the front row, the Dolby Atmos audio subwoofer channel is mapped to the first subwoofer channel; if the vehicle does not have a subwoofer channel in the front row, the Dolby Atmos audio subwoofer channel is mapped to the left front door channel and the right front door channel.

[0015] Optionally, the second left parameter channel also includes a front left 3D channel, and the first left parameter channel of the immersive audio is mapped to the second left parameter channel in the in-vehicle playback device located in the front row of the vehicle, including: the left 3D channel in the first left parameter channel is mapped to the front left 3D channel in the second left parameter channel; the second right parameter channel also includes a front right 3D channel, and the first right parameter channel of the immersive audio is mapped to the second right parameter channel in the in-vehicle playback device located in the front row of the vehicle, including: the right 3D channel in the first right parameter channel is mapped to the front right 3D channel in the second right parameter channel.

[0016] Optionally, when the target playback mode is the rear-seat playback mode, the playback mapping relationship also includes:

[0017] If a second subwoofer channel is installed in the rear of the vehicle, the subwoofer channel of the Dolby Atmos audio is mapped to the second subwoofer channel; if no subwoofer channel is installed in the rear of the vehicle, the subwoofer channel of the Dolby Atmos audio is mapped to the left rear door channel and the right rear door channel.

[0018] Optionally, when the target playback mode is the rear-seat playback mode, the playback mapping relationship also includes:

[0019] If the vehicle has a second center channel in the rear, the center channel of the surround sound audio will be mapped to the second center channel; if the vehicle does not have a center channel in the rear, the center channel of the surround sound audio will be mapped to the left and right rear door channels.

[0020] Optionally, the third left parameter channel also includes a left rear 3D channel, and the first left parameter channel is mapped to the third left parameter channel in the vehicle playback device located in the rear of the vehicle, including: the left 3D channel in the first left parameter channel is mapped to the left rear 3D channel in the third left parameter channel; the third right parameter channel also includes a right rear 3D channel, and the first right parameter channel is mapped to the third right parameter channel in the vehicle playback device located in the rear of the vehicle, including: the right 3D channel in the first right parameter channel is mapped to the right rear 3D channel in the third right parameter channel.

[0021] Optionally, the third left parameter channel further includes a left rear surround channel, and the first left parameter channel is mapped to the third left parameter channel in the vehicle playback device located in the rear of the vehicle, including: the left parameter surround channel in the first left parameter channel is mapped to the left rear surround channel in the third left parameter channel; the third right parameter channel further includes a right rear surround channel, and the first right parameter channel is mapped to the third right parameter channel in the vehicle playback device located in the rear of the vehicle, including: the right parameter surround channel in the first right parameter channel is mapped to the right rear surround channel in the third right parameter channel.

[0022] Optionally, the left parameter surround channel is the left rear surround channel, and the right parameter surround channel is the right rear surround channel; the left surround channel in the first left parameter channel is mapped to the left rear door channel, and the right surround channel in the first right parameter channel is mapped to the right rear door channel.

[0023] A second aspect of this application provides a channel mapping device, comprising: an acquisition module, a determination module, and a control module; the acquisition module is configured to acquire a target playback mode of an in-vehicle playback device; the determination module is configured to determine a playback mapping relationship of the in-vehicle playback device based on the target playback mode, the playback mapping relationship indicating the correspondence between the channels of immersive audio and the channels of the in-vehicle playback device; the control module is configured to control the in-vehicle playback device to play immersive audio based on the playback mapping relationship;

[0024] Optionally, when the target playback mode is the front-row playback mode, the playback mapping relationship includes:

[0025] The first left parameter channel of the immersive sound audio is mapped to the second left parameter channel of the in-vehicle playback device located in the front row of the vehicle, and the first right parameter channel of the immersive sound audio is mapped to the second right parameter channel of the in-vehicle playback device located in the front row of the vehicle. The second left parameter channel includes at least the left front door channel, and the second right parameter channel includes at least the right front door channel; or...

[0026] Optionally, when the target playback mode is the rear-seat playback mode, the playback mapping relationship includes:

[0027] The first left parameter channel is mapped to the third left parameter channel in the vehicle playback device located in the rear of the vehicle, and the first right parameter channel is mapped to the third right parameter channel in the vehicle playback device located in the rear of the vehicle. The third left parameter channel includes at least the left rear door channel, and the third right parameter channel includes at least the right rear door channel.

[0028] Optionally, when the target playback mode is the front-row playback mode, the playback mapping relationship also includes:

[0029] If the vehicle has a first center channel in the front row, the center channel of the surround sound audio will be mapped to the first center channel; if the vehicle does not have a center channel in the front row, the center channel of the surround sound audio will be mapped to the left front door channel and the right front door channel.

[0030] Optionally, when the target playback mode is the front-row playback mode, the playback mapping relationship also includes:

[0031] If the vehicle has a first subwoofer channel in the front row, the Dolby Atmos audio subwoofer channel is mapped to the first subwoofer channel; if the vehicle does not have a subwoofer channel in the front row, the Dolby Atmos audio subwoofer channel is mapped to the left front door channel and the right front door channel.

[0032] Optionally, the second left parameter channel also includes a front left 3D channel, and the first left parameter channel of the immersive audio is mapped to the second left parameter channel in the in-vehicle playback device located in the front row of the vehicle, including: the left 3D channel in the first left parameter channel is mapped to the front left 3D channel in the second left parameter channel; the second right parameter channel also includes a front right 3D channel, and the first right parameter channel of the immersive audio is mapped to the second right parameter channel in the in-vehicle playback device located in the front row of the vehicle, including: the right 3D channel in the first right parameter channel is mapped to the front right 3D channel in the second right parameter channel.

[0033] Optionally, when the target playback mode is the rear-seat playback mode, the playback mapping relationship also includes:

[0034] If a second subwoofer channel is installed in the rear of the vehicle, the subwoofer channel of the Dolby Atmos audio is mapped to the second subwoofer channel; if no subwoofer channel is installed in the rear of the vehicle, the subwoofer channel of the Dolby Atmos audio is mapped to the left rear door channel and the right rear door channel.

[0035] Optionally, when the target playback mode is the rear-seat playback mode, the playback mapping relationship also includes:

[0036] If the vehicle has a second center channel in the rear, the center channel of the surround sound audio will be mapped to the second center channel; if the vehicle does not have a center channel in the rear, the center channel of the surround sound audio will be mapped to the left and right rear door channels.

[0037] Optionally, the third left parameter channel also includes a left rear 3D channel, and the first left parameter channel is mapped to the third left parameter channel in the vehicle playback device located in the rear of the vehicle, including: the left 3D channel in the first left parameter channel is mapped to the left rear 3D channel in the third left parameter channel; the third right parameter channel also includes a right rear 3D channel, and the first right parameter channel is mapped to the third right parameter channel in the vehicle playback device located in the rear of the vehicle, including: the right 3D channel in the first right parameter channel is mapped to the right rear 3D channel in the third right parameter channel.

[0038] Optionally, the third left parameter channel further includes a left rear surround channel, and the first left parameter channel is mapped to the third left parameter channel in the vehicle playback device located in the rear of the vehicle, including: the left parameter surround channel in the first left parameter channel is mapped to the left rear surround channel in the third left parameter channel; the third right parameter channel further includes a right rear surround channel, and the first right parameter channel is mapped to the third right parameter channel in the vehicle playback device located in the rear of the vehicle, including: the right parameter surround channel in the first right parameter channel is mapped to the right rear surround channel in the third right parameter channel.

[0039] Optionally, the left parameter surround channel is the left rear surround channel, and the right parameter surround channel is the right rear surround channel; the left surround channel in the first left parameter channel is mapped to the left rear door channel, and the right surround channel in the first right parameter channel is mapped to the right rear door channel.

[0040] A third aspect of this application provides an in-vehicle playback device, which includes a processor, a player, a memory, and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor, they implement the steps of the channel mapping method described in the first aspect.

[0041] A fourth aspect of this application provides a vehicle including the in-vehicle playback device described in the third aspect above, and a speaker corresponding to each channel of the in-vehicle playback device.

[0042] A fifth aspect of this application provides a readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the channel mapping method as described in the first aspect.

[0043] A sixth aspect of this application provides a computer program product, wherein the computer program product includes a computer program or instructions, and when the computer program product is run on a processor, the processor executes the computer program or instructions to implement the steps of the channel mapping method as described in the first aspect.

[0044] A seventh aspect of this application provides a chip including a processor and a communication interface coupled to the processor. The processor is used to run a program or instructions to implement the steps of the channel mapping method as described in the first aspect.

[0045] The technical solution provided in this application has the following advantages compared with the prior art:

[0046] In this embodiment, in the front-seat playback mode, when the in-vehicle playback device plays immersive audio, the first left parameter channel of the immersive audio can be played through the second left parameter channel set in the front of the vehicle, and the first right parameter channel of the immersive audio can be played through the second right parameter channel set in the front of the vehicle. Therefore, when playing immersive audio, both the first left parameter channel and the first right parameter channel of the immersive audio will be played, thereby reducing the loss of sound location in the immersive audio and improving the user experience.

[0047] In this embodiment, in the rear-seat playback mode, when the in-vehicle playback device plays immersive audio, the first left parameter channel of the immersive audio can be played through the third right parameter channel set in the rear seat of the vehicle. Therefore, when playing immersive audio, both the first left parameter channel and the first right parameter channel are played, thereby reducing the loss of spatial awareness in the immersive audio and improving the user experience. Attached Figure Description

[0048] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0049] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 This is a flowchart illustrating a vocal tract mapping method provided in this disclosure;

[0051] Figure 2 This is one of the schematic diagrams illustrating the channel mapping relationship of the channel mapping method provided in this disclosure;

[0052] Figure 3 The second schematic diagram of the channel mapping relationship for the channel mapping method provided in this disclosure;

[0053] Figure 4 The third schematic diagram of the channel mapping relationship for the channel mapping method provided in this disclosure;

[0054] Figure 5 The fourth diagram illustrating the channel mapping relationship of the channel mapping method provided in this disclosure;

[0055] Figure 6 The fifth diagram illustrating the channel mapping relationship of the channel mapping method provided in this disclosure;

[0056] Figure 7 The sixth diagram illustrating the channel mapping relationship of the channel mapping method provided in this disclosure;

[0057] Figure 8 The seventh diagram illustrating the channel mapping relationship of the channel mapping method provided in this disclosure;

[0058] Figure 9 The eighth diagram illustrating the channel mapping relationship of the channel mapping method provided in this disclosure;

[0059] Figure 10 The ninth diagram illustrates the channel mapping relationship of the channel mapping method provided in this disclosure;

[0060] Figure 11 This is the tenth schematic diagram of the channel mapping relationship for the channel mapping method provided in this disclosure;

[0061] Figure 12 This is a schematic diagram of the structure of a channel mapping device provided in this disclosure;

[0062] Figure 13 This is a schematic diagram of the hardware structure of a vehicle-mounted playback device provided in this disclosure. Detailed Implementation

[0063] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0064] Numerous specific details are set forth in the following description to provide a thorough understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this application are within the scope of protection of this application.

[0065] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0066] The following is an explanation of some of the terms or concepts used in the claims and description of this invention.

[0067] Downmixing: Merging the content between channels of Dolby Atmos or other multi-channel audio formats to minimize content loss after merging.

[0068] Immersive audio: refers to multi-channel audio, which can at least resolve the audio signals of the first left parameter channel and the first right parameter channel, wherein the first left parameter channel includes at least two left parameter channels, and the first right parameter channel includes at least two right parameter channels.

[0069] Immersive sound playback refers to sound not being output according to preset channels, but rather, based on the specific environment, the decoder calculates and uses algorithms to specify certain channels for output, so that immersive sound playback retains the sense of sound location, making the sound more three-dimensional and realistic with dynamic sound effects.

[0070] Loudspeakers, also known as "horns," are transducers that convert electrical signals into sound signals. The performance of loudspeakers has a significant impact on sound quality.

[0071] 5.1.2 Audio System: Where 5 represents 5 channels, including: left front door channel, right front door channel, center channel speaker, left rear door channel, and right rear door channel; 1 represents the subwoofer channel; 2 represents 2 channels, including: left front 3D channel and right front 3D channel.

[0072] 7.1.4 Audio System: Where 7 represents 7 channels, including: left front door channel, right front door channel, center channel, left rear door channel, right rear door channel, left rear surround channel, and right rear surround channel; 1 represents the subwoofer channel; 4 represents 4 channels, including: left front 3D channel, right front 3D channel, left rear 3D channel, and right rear 3D channel.

[0073] 7.3.4 Audio System: Wherein, 7 represents 7 channels, including: left front door channel, right front door channel, center channel, left rear door channel, right rear door channel, left rear surround channel, and right rear surround channel; 3 represents 3 subwoofer channels; 4 represents 4 channels, including: left front 3D channel, right front 3D channel, left rear 3D channel, and right rear 3D channel.

[0074] Audio channel: In audio sources, it refers to the independent audio signals collected or played back from different spatial locations during recording or playback; in in-vehicle playback devices, it refers to the hardware channel, the sound output line.

[0075] Channel mapping: Sends audio from a specified channel to a specified hardware channel.

[0076] In in-vehicle playback devices, each channel corresponds to at least one speaker. The following example, using the audio system in section 7.3.4, illustrates the correspondence between channels and speakers:

[0077] 7.3.4 In an audio system, any one of the following channels—left front door channel, right front door channel, center channel, left rear door channel, right rear door channel, left rear surround channel, right rear surround channel, left front 3D channel, right front 3D channel, left rear 3D channel, right rear 3D channel, and each subwoofer channel—can correspond to a set of speakers. Each set of speakers can include at least one speaker, the specific number to be determined based on actual conditions, and is not limited here. If a channel corresponds to a single speaker, that single speaker is used to play the audio signal corresponding to that channel; if a channel corresponds to multiple speakers, each speaker can be used to play different frequencies of the audio signal. The more speakers a channel corresponds to, the finer the frequency division of the audio signal corresponding to that channel. For example, if the left front door channel corresponds to 3 speakers, then the 3 speakers are used to play the high-frequency part, mid-frequency part, and low-frequency part of the audio signal corresponding to the left front door channel, respectively (the 3 speakers are divided into high-frequency, mid-frequency, and low-frequency ranges); if the left front door channel corresponds to 2 speakers, then the 2 speakers are used to play the high-frequency part and low-frequency part of the audio signal corresponding to the left front door channel, respectively (the 2 speakers are divided into high-frequency and low-frequency ranges).

[0078] It should be noted that in a car audio system, each channel can be an independent audio output line that can transmit the audio signal corresponding to that channel. Each channel can also be further subdivided into at least two sub-output lines. The car audio system will distribute the audio signal corresponding to that channel to obtain multiple sub-audio signals and control each sub-output line to output the corresponding sub-audio signal. The specific details can be determined according to actual usage requirements and are not limited here.

[0079] For example, the speaker corresponding to the left front door channel can be installed in at least one of the following positions: left front door, left front door glass, left A-pillar, left B-pillar; the speaker corresponding to the right front door channel can be installed in at least one of the following positions: right front door, right front door glass, right A-pillar, right B-pillar; the speaker corresponding to the left rear door channel can be installed in at least one of the following positions: left rear door, left rear door glass, left C-pillar, left D-pillar, left B-pillar; the speaker corresponding to the right rear door channel can be installed in at least one of the following positions: right rear door, right rear door glass, right C-pillar, right D-pillar, right B-pillar; the speaker corresponding to the center channel can be installed in at least one of the following positions: IP station, windshield; the speaker corresponding to the left rear surround channel can be installed in at least one of the following positions: left rear door, left rear door glass, left C-pillar, left D-pillar; the speaker corresponding to the right rear surround channel can be installed in at least one of the following positions: left rear door, left rear door glass, left C-pillar, left D-pillar; the speaker corresponding to the right rear surround channel can be installed in at least one of the following positions: right rear door, left rear door glass, left C-pillar, left D-pillar; the speaker corresponding to the right rear surround channel can be installed in at least one of the following positions. The corresponding speakers can be installed in at least one of the following locations: right rear door, right rear door glass, right C-pillar, right D-pillar; the speakers for the left front 3D channel can be installed in at least one of the following locations: upper left front door, upper left front A-pillar, upper left front B-pillar; the speakers for the right front 3D channel can be installed in at least one of the following locations: upper right front door, upper right A-pillar, upper right B-pillar; the speakers for the left rear 3D channel can be installed in at least one of the following locations: upper left rear door, upper left C-pillar, upper left D-pillar; the speakers for the right rear 3D channel can be installed in at least one of the following locations: upper right rear door, upper right C-pillar, upper right D-pillar; the speakers for the three subwoofer channels are respectively installed in the following locations: left front area (e.g., left front door or left front door glass), right front area (e.g., right front door or right front door glass), and trunk area. The speaker locations for each channel are not limited to the above settings and can be set to other locations according to the actual situation.

[0080] The entity executing the channel mapping method provided in this application embodiment can be the aforementioned in-vehicle playback device, or it can be a functional module and / or functional entity in the in-vehicle playback device that can implement the channel mapping method. The specific implementation can be determined according to actual usage requirements, and this application embodiment does not limit it.

[0081] The channel mapping method provided in this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0082] like Figure 1 As shown, this application provides a channel mapping method. The following description uses an in-vehicle playback device as an example to illustrate the channel mapping method provided in this application. The method may include steps 101 to 103 as described below.

[0083] 101. Obtain the target playback mode of the in-vehicle playback device.

[0084] The in-vehicle playback device includes a player, which includes multiple speakers, with each channel corresponding to at least one speaker; the playback modes of the in-vehicle playback device include: front row playback mode, rear row playback mode, and whole-vehicle playback mode.

[0085] 102. Determine the playback mapping relationship of the in-vehicle playback device based on the target playback mode.

[0086] The playback mapping relationship is used to indicate the correspondence between the channels of the panoramic sound audio and the channels of the in-vehicle playback device.

[0087] For example, in a car audio system (e.g., 7.1.4), when playing music throughout the entire vehicle, such as... Figure 2 As shown, the left side represents the channels of the immersive audio system, and the right side represents the channels of the in-vehicle playback device. The mapping relationship between the immersive audio channels and the in-vehicle playback device channels is as follows: the left channel is mapped to the left front door channel, the right channel is mapped to the right front door channel, the center channel is mapped to the center channel, the subwoofer channel is mapped to the subwoofer channel, the left surround channel is mapped to the left rear door channel, the right surround channel is mapped to the right rear door channel, the left rear surround channel is mapped to the left rear surround channel, the right rear surround channel is mapped to the right rear surround channel, the left front 3D channel is mapped to the left front 3D channel, the right front 3D channel is mapped to the right front 3D channel, the left rear 3D channel is mapped to the left rear 3D channel, and the right rear 3D channel is mapped to the right rear 3D channel.

[0088] It is understood that the panoramic audio can be decoded into individual channels by a decoding device. The specific number of channels decoded depends on the audio system of the in-vehicle playback device installed in the vehicle, and this application embodiment does not limit this number. The channels decoded from the panoramic audio correspond one-to-one with the channels included in the audio system of the in-vehicle playback device.

[0089] For example, the audio system settings in section 5.1.2 of the in-vehicle playback device include the following playback channels: left front door channel, right front door channel, left rear door channel, right rear door channel, center channel, subwoofer channel, left front 3D channel, and right front 3D channel. The corresponding surround sound audio channels could then include: left channel, right channel, left surround, right surround, center channel, subwoofer channel, left front 3D channel, and right front 3D channel. Section 7.1.4 adds the following playback channels to the audio system settings in section 5.1.2: left rear surround channel, right rear surround channel, left rear 3D channel, and right rear 3D channel. The corresponding surround sound audio channels could then include: left channel, right channel, left surround, right surround, center channel, subwoofer channel, left front 3D channel, right front 3D channel, left rear 3D channel, right rear 3D channel, left rear surround channel, and right rear surround channel.

[0090] 103. Based on the playback mapping relationship, control the in-vehicle playback device to play panoramic audio.

[0091] Optionally, when the target playback mode is the front-row playback mode, the playback mapping relationship includes:

[0092] The first left parameter channel of the immersive audio is mapped to the second left parameter channel of the in-vehicle playback device located in the front row of the vehicle, and the first right parameter channel of the immersive audio is mapped to the second right parameter channel of the in-vehicle playback device located in the front row of the vehicle. The second left parameter channel includes at least the left front door channel, and the second right parameter channel includes at least the right front door channel.

[0093] The first left parameter channel can be all the left parameter channels in the immersive audio. For example, when the immersive audio corresponds to a 5.1.2 sound system, the first left parameter channel includes the left channel, the left surround channel, and the left front 3D channel.

[0094] The first right parameter channel can be all the right parameter channels in the immersive audio. For example, when the immersive audio corresponds to a 5.1.2 sound system, the first right parameter channel includes the right channel, the right surround channel, and the right front 3D channel.

[0095] Optionally, the content between at least two channels in the first left parameter channel is merged and then played through one channel of the second left parameter channel. This can reduce the loss of spatial awareness in the immersive audio by downmixing.

[0096] Optionally, the content between at least two channels in the first right parameter channel is merged and then played through one channel of the second right parameter channel. This can reduce the loss of spatial awareness in the immersive audio by downmixing.

[0097] In this embodiment, in the front-seat playback mode, when the in-vehicle playback device plays immersive audio, the first left parameter channel of the immersive audio can be played through the second left parameter channel set in the front of the vehicle, and the first right parameter channel of the immersive audio can be played through the second right parameter channel set in the front of the vehicle. Therefore, when playing immersive audio, both the first left parameter channel and the first right parameter channel of the immersive audio will be played, thereby reducing the loss of sound location in the immersive audio and improving the user experience.

[0098] In this embodiment, in the front-seat playback mode, when the in-vehicle playback device plays immersive audio, the first left parameter channel of the immersive audio can be played through the second left parameter channel set in the front of the vehicle, and the first right parameter channel of the immersive audio can be played through the second right parameter channel set in the front of the vehicle. Therefore, when playing immersive audio, both the first left parameter channel and the first right parameter channel of the immersive audio will be played, thereby reducing the loss of sound location in the immersive audio and improving the user experience.

[0099] Optionally, in step 103 above, when the target playback mode is the front row playback mode, the playback mapping relationship also includes: if the front row of the vehicle does not have a center channel, the center channel of the panoramic sound audio is mapped to the left front door channel and the right front door channel.

[0100] For example, taking the audio system in section 7.1.4 as an example, when the target playback mode of the in-vehicle playback device is the front playback mode, the mapping relationship between the channels of the panoramic sound audio and the channels of the in-vehicle playback device is as follows: the left channel is mapped to the left front door channel, the right channel is mapped to the right front door channel, the center channel is mapped to the left front door channel and the right front door channel, the left surround channel is mapped to the left front door channel, the right surround channel is mapped to the right front door channel, the left rear surround channel is mapped to the left front door channel, the right rear surround channel is mapped to the right front door channel, the left front 3D channel is mapped to the left front door channel, the right front 3D channel is mapped to the right front door channel, the left rear 3D channel is mapped to the left front door channel, the right rear 3D channel is mapped to the right front door channel, and the subwoofer channel is mapped to the left front door channel and the right front door channel.

[0101] Optionally, in step 103 above, when the target playback mode is the front row playback mode, the playback mapping relationship further includes: if the front row of the vehicle is equipped with a first center channel, then the center channel of the panoramic sound audio is mapped to the first center channel, and the center channel of the panoramic sound audio is mapped to the first center channel.

[0102] For example, such as Figure 3As shown, taking the audio system of 7.1.4 as an example, when the target playback mode of the in-vehicle playback device is the front playback mode, the mapping relationship between the channels of the panoramic sound audio and the channels of the in-vehicle playback device is as follows: the left channel is mapped to the left front door channel, the right channel is mapped to the right front door channel, the center channel is mapped to the first center channel, the left surround channel is mapped to the left front door channel, the right surround channel is mapped to the right front door channel, the left rear surround channel is mapped to the left front door channel, the right rear surround channel is mapped to the right front door channel, the left front 3D channel is mapped to the left front door channel, the right front 3D channel is mapped to the right front door channel, the left rear 3D channel is mapped to the left front door channel, the right rear 3D channel is mapped to the right front door channel, and the subwoofer channel is mapped to the left front door channel and the right front door channel.

[0103] In this embodiment, when the target playback mode of the in-vehicle playback device is the front-row playback mode, if a first center channel is provided in the front row of the vehicle, the center channel of the immersive sound audio is mapped to the first center channel of the in-vehicle playback device; if no first center channel is provided in the front row of the vehicle, the center channel of the immersive sound audio is mapped to the left front door channel and the right front door channel of the in-vehicle playback device. Thus, it is ensured that the content of the center channel in the immersive sound audio channel is preserved when the in-vehicle playback device is in the front-row playback mode, thereby improving the user experience.

[0104] It should be noted that the embodiments of this application include... Figure 3 To be continued Figure 11 The following are examples using immersive audio: left channel, right channel, center channel, left surround channel, right surround channel, left rear surround channel, right rear surround channel, subwoofer channel, left front 3D channel, right front 3D channel, left rear 3D channel, and right rear 3D channel. The left channel, left surround channel, left rear surround channel, left front 3D channel, and left rear 3D channel are the first left parameter channels, while the right channel, right surround channel, right rear surround channel, right front 3D channel, and right rear 3D channel are the first right parameter channels.

[0105] Optionally, when the target playback mode of the in-vehicle playback device is the front row playback mode, the subwoofer channel in the panoramic sound audio can be mapped to the left front door channel, or the right front door channel, or both the left front door channel and the right front door channel simultaneously.

[0106] Optionally, in step 103 above, when the target playback mode is the front row playback mode, the playback mapping relationship also includes: if the front row of the vehicle does not have a subwoofer channel, the subwoofer channel of the panoramic sound audio is mapped to the left front door channel and the right front door channel.

[0107] For example, such as Figure 3As shown, when the target playback mode of the in-vehicle playback device is the front-row playback mode, the mapping relationship between the channels of the panoramic sound audio and the channels of the in-vehicle playback device is as follows: the left channel is mapped to the left front door channel, the right channel is mapped to the right front door channel, the center channel is mapped to the first center channel, the left surround channel is mapped to the left front door channel, the right surround channel is mapped to the right front door channel, the left rear surround channel is mapped to the left front door channel, the right rear surround channel is mapped to the right front door channel, the left front 3D channel is mapped to the left front door channel, the right front 3D channel is mapped to the right front door channel, the left rear 3D channel is mapped to the left front door channel, the right rear 3D channel is mapped to the right front door channel, and the subwoofer channel is mapped to the left front door channel and the right front door channel.

[0108] Optionally, in step 103 above, when the target playback mode is the front row playback mode, the playback mapping relationship further includes: if the front row of the vehicle is equipped with a first subwoofer channel, then the subwoofer channel of the panoramic audio is mapped to the first subwoofer channel.

[0109] For example, such as Figure 4 As shown, taking the audio system of 7.1.4 as an example, when the target playback mode of the in-vehicle playback device is the front playback mode, the mapping relationship between the channels of the panoramic sound audio and the channels of the in-vehicle playback device is as follows: the left channel is mapped to the left front door channel, the right channel is mapped to the right front door channel, the center channel is mapped to the first center channel, the left surround channel is mapped to the left front door channel, the right surround channel is mapped to the right front door channel, the left rear surround channel is mapped to the left front door channel, the right rear surround channel is mapped to the right front door channel, the left front 3D channel is mapped to the left front door channel, the right front 3D channel is mapped to the right front door channel, the left rear 3D channel is mapped to the left front door channel, the right rear 3D channel is mapped to the right front door channel, and the subwoofer channel is mapped to the first subwoofer channel.

[0110] In this embodiment, when the target playback mode of the in-vehicle playback device is the front-row playback mode, if a first subwoofer channel is provided in the front row of the vehicle, the subwoofer channel of the immersive audio is mapped to the first subwoofer channel of the in-vehicle playback device; if no first subwoofer channel is provided in the front row of the vehicle, the subwoofer channel of the immersive audio is mapped to the left front door channel and the right front door channel of the in-vehicle playback device. Thus, it is ensured that the content of the subwoofer channel in the immersive audio channel is preserved when the in-vehicle playback device is in the front-row playback mode, thereby improving the user experience.

[0111] Optionally, in step 103 above, the second left parameter channel also includes a left front 3D channel, and the second right parameter channel also includes a right front 3D channel.

[0112] The left 3D channel in the first left parameter channel of the immersive audio is mapped to the left front 3D channel in the second left parameter channel; the right 3D channel in the first right parameter channel of the immersive audio is mapped to the right front 3D channel in the second right parameter channel.

[0113] It is understood that the left 3D channel in the first left parameter channel of the panoramic sound audio includes at least the left front 3D channel and the left rear 3D channel, which are specifically determined according to the channels of the parsed panoramic sound audio. This application does not limit the specific channels.

[0114] It is understood that the right 3D channel in the first left parameter channel of the panoramic sound audio includes at least the right front 3D channel and the right rear 3D channel, which are specifically determined according to the channels of the parsed panoramic sound audio. This application embodiment does not limit this.

[0115] In this configuration, all channels in the first left parameter channel except the left 3D channel are mapped to the left front door channel, and all channels in the first right parameter channel except the right 3D channel are mapped to the right front door channel.

[0116] For example, such as Figure 5 As shown, taking the audio system of 7.1.4 as an example, when the target playback mode of the in-vehicle playback device is the front playback mode, the second left parameter channel also includes the left front 3D channel, and the second right parameter channel also includes the right front 3D channel. The mapping relationship between the channels of the panoramic sound audio and the channels of the in-vehicle playback device is as follows: the left channel is mapped to the left front door channel, the right channel is mapped to the right front door channel, the center channel is mapped to the first center channel, the left surround channel is mapped to the left front door channel, the right surround channel is mapped to the right front door channel, the left rear surround channel is mapped to the left front door channel, the right rear surround channel is mapped to the right front door channel, the left front 3D channel is mapped to the left front 3D channel, the right front 3D channel is mapped to the right front 3D channel, the left rear 3D channel is mapped to the left front 3D channel, the right rear 3D channel is mapped to the right front 3D channel, and the subwoofer channel is mapped to the first subwoofer channel.

[0117] In this embodiment, when the target playback mode of the in-vehicle playback device is the front-row playback mode, the second left parameter channel also includes a left front 3D channel, and the second right parameter channel also includes a right front 3D channel. The left 3D channel of the immersive sound audio is mapped to the left front 3D channel of the in-vehicle playback device, and the right 3D channel of the immersive sound audio is mapped to the right front 3D channel of the in-vehicle playback device. The other channels in the first left parameter channel, except for the left 3D channel, are mapped to the left front door channel, and the other channels in the first right parameter channel, except for the right 3D channel, are mapped to the right front door channel. Thus, it is ensured that when the in-vehicle playback device is in the front-row playback mode, the content of the left and right 3D channels in the immersive sound audio channel is preserved, improving the user experience.

[0118] Optionally, when the target playback mode is the rear-seat playback mode, the playback mapping relationship includes: the first left parameter channel is mapped to the third left parameter channel in the vehicle playback device located in the rear seat of the vehicle, and the first right parameter channel is mapped to the third right parameter channel in the vehicle playback device located in the rear seat of the vehicle, wherein the third left parameter channel includes at least the left rear door channel, and the third right parameter channel includes at least the right rear door channel.

[0119] Optionally, the content between at least two channels in the first left parameter channel is merged and then played through one channel in the third left parameter channel. This can reduce the loss of spatial awareness in the immersive audio by downmixing.

[0120] Optionally, the content between at least two channels in the first right parameter channel is merged and then played through one channel of the third right parameter channel. This can reduce the loss of spatial awareness in the immersive audio by downmixing.

[0121] For example, such as Figure 6 As shown, taking the audio system of 7.1.4 as an example, when the target playback mode of the in-vehicle playback device is the rear seat playback mode, the mapping relationship between the channels of the panoramic sound audio and the channels of the in-vehicle playback device is as follows: the left channel is mapped to the left rear door channel, the right channel is mapped to the right rear door channel, the left surround channel is mapped to the left rear door channel, the right surround channel is mapped to the right rear door channel, the left rear surround channel is mapped to the left rear door channel, the right rear surround channel is mapped to the right rear door channel, the left front 3D channel is mapped to the left rear door channel, the right front 3D channel is mapped to the right rear door channel, the left rear 3D channel is mapped to the left rear door channel, and the right rear 3D channel is mapped to the right rear door channel.

[0122] In this embodiment, in the rear-seat playback mode, when the in-vehicle playback device plays immersive audio, the first left parameter channel of the immersive audio can be played through the third right parameter channel set in the rear seat of the vehicle. Therefore, when playing immersive audio, both the first left parameter channel and the first right parameter channel of the immersive audio will be played, thereby reducing the loss of spatial awareness in the immersive audio and improving the user experience.

[0123] Optionally, when the target playback mode of the in-vehicle playback device is the rear-seat playback mode, the center channel in the panoramic sound audio can be mapped to the left rear door channel, or the right rear door channel, or both the left and right rear door channels can be mapped simultaneously.

[0124] Optionally, in step 103 above, when the target playback mode is the rear-seat playback mode, the playback mapping relationship further includes: if no subwoofer channel is installed in the rear of the vehicle, the subwoofer channel of the panoramic sound audio is mapped to the left rear door channel and the right rear door channel.

[0125] For example, such as Figure 6 As shown, taking the 7.1.4 audio system as an example, when the target playback mode of the in-vehicle playback device is the rear-seat playback mode, the mapping relationship between the channels of the panoramic sound audio and the channels of the in-vehicle playback device is as follows: the left channel is mapped to the left rear door channel, the right channel is mapped to the right rear door channel, the center channel is mapped to the left and right rear door channels, the left surround channel is mapped to the left rear door channel, the right surround channel is mapped to the right rear door channel, the left rear surround channel is mapped to the left rear door channel, the right rear surround channel is mapped to the right rear door channel, the left front 3D channel is mapped to the left rear door channel, the right front 3D channel is mapped to the right rear door channel, the left rear 3D channel is mapped to the left rear door channel, the right rear 3D channel is mapped to the right rear door channel, and the subwoofer channel is mapped to the left and right rear door channels.

[0126] Optionally, in step 103 above, when the target playback mode is the rear-seat playback mode, the playback mapping relationship further includes: if a second subwoofer channel is provided in the rear of the vehicle, then the subwoofer channel of the panoramic audio is mapped to the second subwoofer channel.

[0127] For example, such as Figure 7 As shown, taking the audio system of 7.1.4 as an example, when the target playback mode of the in-vehicle playback device is the rear seat playback mode, the mapping relationship between the channels of the panoramic sound audio and the channels of the in-vehicle playback device is as follows: the left channel is mapped to the left rear door channel, the right channel is mapped to the right rear door channel, the center channel is mapped to the left and right rear door channels, the left surround channel is mapped to the left rear door channel, the right surround channel is mapped to the right rear door channel, the left rear surround channel is mapped to the left rear door channel, the right rear surround channel is mapped to the right rear door channel, the left front 3D channel is mapped to the left rear door channel, the right front 3D channel is mapped to the right rear door channel, the left rear 3D channel is mapped to the left rear door channel, the right rear 3D channel is mapped to the right rear door channel, and the subwoofer channel is mapped to the second subwoofer channel.

[0128] In this embodiment, when the target playback mode of the in-vehicle playback device is the rear-seat playback mode, if a second subwoofer channel is provided in the rear of the vehicle, the subwoofer channel of the immersive audio is mapped to the second subwoofer channel of the in-vehicle playback device; if no second subwoofer channel is provided in the rear of the vehicle, the subwoofer channel of the immersive audio is mapped to the left and right rear door channels of the in-vehicle playback device. This ensures that the subwoofer channel content in the immersive audio channel is preserved when the in-vehicle playback device is in the rear-seat playback mode, thus improving the user experience.

[0129] Optionally, when the target playback mode of the in-vehicle playback device is the rear-seat playback mode, the center channel in the panoramic sound audio can be mapped to the left rear door channel, or the right rear door channel, or both the left and right rear door channels can be mapped simultaneously.

[0130] Optionally, in step 103 above, when the target playback mode is the rear-seat playback mode, the playback mapping relationship further includes: if a second center channel is provided in the rear of the vehicle, then the center channel of the panoramic audio is mapped to the second center channel.

[0131] For example, such as Figure 8 As shown, taking the audio system of 7.1.4 as an example, when the target playback mode of the in-vehicle playback device is the rear seat playback mode, the mapping relationship between the channels of the panoramic sound audio and the channels of the in-vehicle playback device is as follows: the left channel is mapped to the left rear door channel, the right channel is mapped to the right rear door channel, the center channel is mapped to the second center channel, the left surround channel is mapped to the left rear door channel, the right surround channel is mapped to the right rear door channel, the left rear surround channel is mapped to the left rear door channel, the right rear surround channel is mapped to the right rear door channel, the left front 3D channel is mapped to the left rear door channel, the right front 3D channel is mapped to the right rear door channel, the left rear 3D channel is mapped to the left rear door channel, the right rear 3D channel is mapped to the right rear door channel, and the subwoofer channel is mapped to the left rear door channel and the right rear door channel.

[0132] Optionally, in step 103 above, when the target playback mode is the rear-seat playback mode, the playback mapping relationship further includes: if the rear seats of the vehicle do not have a center channel, the center channel of the panoramic sound audio is mapped to the left rear door channel and the right rear door channel.

[0133] For example, such as Figure 6 As shown, taking the 7.1.4 audio system as an example, when the target playback mode of the in-vehicle playback device is the rear-seat playback mode, the mapping relationship between the channels of the panoramic sound audio and the channels of the in-vehicle playback device is as follows: the left channel is mapped to the left rear door channel, the right channel is mapped to the right rear door channel, the center channel is mapped to the left and right rear door channels, the left surround channel is mapped to the left rear door channel, the right surround channel is mapped to the right rear door channel, the left rear surround channel is mapped to the left rear door channel, the right rear surround channel is mapped to the right rear door channel, the left front 3D channel is mapped to the left rear door channel, the right front 3D channel is mapped to the right rear door channel, the left rear 3D channel is mapped to the left rear door channel, the right rear 3D channel is mapped to the right rear door channel, and the subwoofer channel is mapped to the left and right rear door channels.

[0134] In this embodiment, when the target playback mode of the in-vehicle playback device is the rear-seat playback mode, if a second center channel is provided in the rear of the vehicle, the center channel of the immersive audio is mapped to the second center channel of the in-vehicle playback device; if no second center channel is provided in the rear of the vehicle, the center channel of the immersive audio is mapped to the left and right rear door channels of the in-vehicle playback device. Thus, it is ensured that the content of the center channel in the immersive audio channels is preserved when the in-vehicle playback device is in the rear-seat playback mode, thereby improving the user experience.

[0135] Optionally, in step 103 above, the third left parameter channel also includes a left rear 3D channel, and the third right parameter channel also includes a right rear 3D channel.

[0136] The left 3D channel in the first left parameter channel of the immersive audio is mapped to the left rear 3D channel in the third left parameter channel; the right 3D channel in the first right parameter channel of the immersive audio is mapped to the right rear 3D channel in the third right parameter channel.

[0137] In this configuration, all channels in the first left parameter channel except the left 3D channel are mapped to the left rear door channel, and all channels in the first right parameter channel except the right 3D channel are mapped to the right rear door channel.

[0138] For example, such as Figure 9 As shown, taking the 7.1.4 audio system as an example, when the target playback mode of the in-vehicle playback device is the rear-seat playback mode, the third left parameter channel also includes the left rear 3D channel, and the third right parameter channel also includes the right rear 3D channel. The mapping relationship between the channels of the panoramic sound audio and the channels of the in-vehicle playback device is as follows: the left channel is mapped to the left rear door channel, the right channel is mapped to the right rear door channel, the center channel is mapped to the second center channel, the left surround channel is mapped to the left rear door channel, the right surround channel is mapped to the right rear door channel, the left rear surround channel is mapped to the left rear door channel, the right rear surround channel is mapped to the right rear door channel, the left front 3D channel is mapped to the left rear 3D channel, the right front 3D channel is mapped to the right rear 3D channel, the left rear 3D channel is mapped to the left rear 3D channel, the right rear 3D channel is mapped to the right rear 3D channel, and the subwoofer channel is mapped to the second subwoofer channel.

[0139] In this embodiment, when the target playback mode of the in-vehicle playback device is the rear-seat playback mode, the third left parameter channel also includes a left rear 3D channel, and the third right parameter channel also includes a right rear 3D channel. The left 3D channel of the immersive audio is mapped to the left rear 3D channel of the in-vehicle playback device, and the right 3D channel of the immersive audio is mapped to the right rear 3D channel of the in-vehicle playback device. The other channels in the first left parameter channel, except for the left 3D channel, are mapped to the left rear door channel, and the other channels in the first right parameter channel, except for the right 3D channel, are mapped to the right rear door channel. Thus, it is ensured that when the in-vehicle playback device is in the rear-seat playback mode, the content of the left and right 3D channels in the immersive audio channel is preserved, improving the user experience.

[0140] Optionally, in step 103 above, the third left parameter channel also includes a left rear surround channel, and the third right parameter channel also includes a right rear surround channel.

[0141] The left-parameter surround channel in the first left-parameter channel of the immersive audio is mapped to the left rear surround channel in the third left-parameter channel; the right-parameter surround channel in the first right-parameter channel of the immersive audio is mapped to the right rear surround channel in the third right-parameter channel.

[0142] It is understood that the left parameter surround channel in the first left parameter channel of the panoramic audio includes at least the left surround channel and the left rear surround channel, which are specifically determined according to the channel of the parsed panoramic audio. This application embodiment does not limit this.

[0143] It is understood that the right parameter surround channel in the first right parameter channel of the panoramic audio includes at least the right surround channel and the right rear surround channel, which are specifically determined according to the channel of the parsed panoramic audio. This application does not limit this.

[0144] In this configuration, all channels in the first left parameter channel except the left parameter surround channel are mapped to the left rear door channel, and all channels in the first right parameter channel except the right parameter surround channel are mapped to the right rear door channel.

[0145] For example, such as Figure 10As shown, taking the 7.1.4 audio system as an example, when the target playback mode of the in-vehicle playback device is the rear-seat playback mode, the third left parameter channel also includes the left rear surround channel, and the third right parameter channel also includes the right rear surround channel. The mapping relationship between the channels of the panoramic sound audio and the channels of the in-vehicle playback device is as follows: the left channel is mapped to the left rear door channel, the right channel is mapped to the right rear door channel, the center channel is mapped to the second center channel, the left surround channel is mapped to the left rear surround channel, the right surround channel is mapped to the right rear surround channel, the left rear surround channel is mapped to the left rear surround channel, the right rear surround channel is mapped to the right rear surround channel, the left front 3D channel is mapped to the left rear door channel, the right front 3D channel is mapped to the right rear door channel, the left rear 3D channel is mapped to the left rear door channel, the right rear 3D channel is mapped to the right rear door channel, and the subwoofer channel is mapped to the second subwoofer channel.

[0146] In this embodiment, when the target playback mode of the in-vehicle playback device is the rear-seat playback mode, the third left parameter channel also includes a left rear surround channel, and the third right parameter channel also includes a right rear surround channel. The left parameter surround channel of the immersive audio is mapped to the left rear surround channel of the in-vehicle playback device, and the right parameter surround channel of the immersive audio is mapped to the right rear surround channel of the in-vehicle playback device. The other channels in the first left parameter channel, except for the left parameter surround channel, are mapped to the left rear door channel, and the other channels in the first right parameter channel, except for the right parameter surround channel, are mapped to the right rear door channel. Thus, it is ensured that when the in-vehicle playback device is in the rear-seat playback mode, the content of the left and right parameter surround channels in the immersive audio channel is preserved, improving the user experience.

[0147] Optionally, the left parameter surround channel is the left rear surround channel, and the right parameter surround channel is the right rear surround channel.

[0148] Specifically, the left surround channel in the first left parameter channel is mapped to the left rear door channel, and the right surround channel in the first right parameter channel is mapped to the right rear door channel.

[0149] For example, such as Figure 11As shown, taking the 7.1.4 audio system as an example, when the target playback mode of the in-vehicle playback device is the rear-seat playback mode, the third left parameter channel is the left rear surround channel, the third right parameter channel is the right rear surround channel, and the mapping relationship between the channels of the panoramic sound audio and the channels of the in-vehicle playback device is as follows: the left channel is mapped to the left rear door channel, the right channel is mapped to the right rear door channel, the center channel is mapped to the second center channel, the left surround channel is mapped to the left rear door channel, the right surround channel is mapped to the right rear door channel, the left rear surround channel is mapped to the left rear surround channel, the right rear surround channel is mapped to the right rear surround channel, the left front 3D channel is mapped to the left rear door channel, the right front 3D channel is mapped to the right rear door channel, the left rear 3D channel is mapped to the left rear door channel, the right rear 3D channel is mapped to the right rear door channel, and the subwoofer channel is mapped to the second subwoofer channel.

[0150] In this embodiment, when the target playback mode of the in-vehicle playback device is the rear-seat playback mode, the left parameter surround channel is the left rear surround channel, and the right parameter surround channel is the right rear surround channel. The left rear surround channel of the immersive audio is mapped to the left rear surround channel of the in-vehicle playback device, and the right rear surround channel of the immersive audio is mapped to the right rear surround channel of the in-vehicle playback device. This ensures that when the in-vehicle playback device is in the rear-seat playback mode, the content of the left and right rear surround channels in the immersive audio channel is preserved, and the channel down-mixing method is added, further improving the user experience.

[0151] It should be noted that the channel mapping method provided in this application embodiment can be applied to two-row, four-seat vehicles as well as three-row, six-seat vehicles.

[0152] The three-row, six-seat model can be divided into a front row (including the driver's seat and the front passenger seat), a second row, and a third row. The front row corresponds to the front row playback mode, while the second and third rows can be treated as a single unit corresponding to the rear row playback mode. Alternatively, the second and third rows can be independent, with the second row corresponding to the rear row playback mode and the third row corresponding to the third row playback mode.

[0153] For vehicles with three rows and six seats, the front and rear playback modes can be described as described in the above embodiments. When the target playback mode is the three-row playback mode, the playback mapping relationship includes: the first left parameter channel is mapped to the fourth left parameter channel in the vehicle's third row of the in-vehicle playback device, and the first right parameter channel is mapped to the fourth right parameter channel in the vehicle's third row of the in-vehicle playback device. The fourth left parameter channel includes at least one of a left rear surround channel and a left rear 3D channel, and the fourth right parameter channel includes at least one of a right rear surround channel and a right rear 3D channel.

[0154] In this embodiment, in the three-row playback mode, when the in-vehicle playback device plays panoramic sound audio, the first left parameter channel of the panoramic sound audio can be played through the fourth right parameter channel set in the third row of the vehicle in the in-vehicle playback device, and the first right parameter channel of the panoramic sound audio can be played through the fourth right parameter channel set in the third row of the vehicle in the in-vehicle playback device. Therefore, when playing panoramic sound audio, both the first left parameter channel and the first right parameter channel of the panoramic sound audio will be played, thereby reducing the loss of sound location in the panoramic sound audio and improving the user experience.

[0155] Optionally, when the target playback mode is a three-row playback mode, the playback mapping relationship also includes: if the vehicle's third row is equipped with a third subwoofer channel, then the subwoofer channel of the immersive audio is mapped to the third subwoofer channel; if the vehicle's third row is not equipped with a subwoofer channel, then the subwoofer channel of the immersive audio is mapped to the left rear surround channel and the right rear surround channel.

[0156] Optionally, when the target playback mode is a three-row playback mode, the playback mapping relationship also includes: if the vehicle's third row has a third center channel, then the center channel of the surround sound audio is mapped to the third center channel; if the vehicle's third row does not have a center channel, then the center channel of the surround sound audio is mapped to the left rear surround channel and the right rear surround channel.

[0157] Optionally, more audio channels can be set in the third row of the vehicle. The specific number can be determined according to the actual situation and is not limited here. For the description of the playback mode of the third row, please refer to the relevant description of the front playback mode or the rear playback mode above, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0158] This disclosure also provides a channel mapping device. Figure 12 This is a schematic diagram of the structure of a channel mapping device provided in this disclosure, as shown below. Figure 12 As shown, the channel mapping device includes: an acquisition module 201, a determination module 202, and a control module 203; the acquisition module 201 is used to acquire the target playback mode of the in-vehicle playback device; the determination module 202 is used to determine the playback mapping relationship of the in-vehicle playback device according to the target playback mode, the playback mapping relationship being used to indicate the correspondence between the channels of the panoramic sound audio and the channels of the in-vehicle playback device; the control module 203 is used to control the in-vehicle playback device to play panoramic sound audio based on the playback mapping relationship.

[0159] Optionally, when the target playback mode is the front-row playback mode, the playback mapping relationship includes:

[0160] The first left parameter channel of the immersive audio is mapped to the second left parameter channel of the in-vehicle playback device located in the front row of the vehicle, and the first right parameter channel of the immersive audio is mapped to the second right parameter channel of the in-vehicle playback device located in the front row of the vehicle. The second left parameter channel includes at least the left front door channel, and the second right parameter channel includes at least the right front door channel.

[0161] Optionally, when the target playback mode is the rear-seat playback mode, the playback mapping relationship includes:

[0162] The first left parameter channel is mapped to the third left parameter channel in the vehicle playback device located in the rear of the vehicle, and the first right parameter channel is mapped to the third right parameter channel in the vehicle playback device located in the rear of the vehicle. The third left parameter channel includes at least the left rear door channel, and the third right parameter channel includes at least the right rear door channel.

[0163] Optionally, when the target playback mode is the front-row playback mode, the playback mapping relationship also includes:

[0164] If the vehicle has a first center channel in the front row, the center channel of the surround sound audio will be mapped to the first center channel; if the vehicle does not have a center channel in the front row, the center channel of the surround sound audio will be mapped to the left front door channel and the right front door channel.

[0165] Optionally, when the target playback mode is the front-row playback mode, the playback mapping relationship also includes:

[0166] If the vehicle has a first subwoofer channel in the front row, the Dolby Atmos audio subwoofer channel is mapped to the first subwoofer channel; if the vehicle does not have a subwoofer channel in the front row, the Dolby Atmos audio subwoofer channel is mapped to the left front door channel and the right front door channel.

[0167] Optionally, the second left parameter channel also includes a front left 3D channel, and the first left parameter channel of the immersive audio is mapped to the second left parameter channel in the in-vehicle playback device located in the front row of the vehicle, including: the left 3D channel in the first left parameter channel is mapped to the front left 3D channel in the second left parameter channel; the second right parameter channel also includes a front right 3D channel, and the first right parameter channel of the immersive audio is mapped to the second right parameter channel in the in-vehicle playback device located in the front row of the vehicle, including: the right 3D channel in the first right parameter channel is mapped to the front right 3D channel in the second right parameter channel.

[0168] Optionally, when the target playback mode is the rear-seat playback mode, the playback mapping relationship also includes:

[0169] If a second subwoofer channel is installed in the rear of the vehicle, the subwoofer channel of the Dolby Atmos audio is mapped to the second subwoofer channel; if no subwoofer channel is installed in the rear of the vehicle, the subwoofer channel of the Dolby Atmos audio is mapped to the left rear door channel and the right rear door channel.

[0170] Optionally, when the target playback mode is the rear-seat playback mode, the playback mapping relationship also includes:

[0171] If the vehicle has a second center channel in the rear, the center channel of the surround sound audio will be mapped to the second center channel; if the vehicle does not have a center channel in the rear, the center channel of the surround sound audio will be mapped to the left and right rear door channels.

[0172] Optionally, the third left parameter channel also includes a left rear 3D channel, and the first left parameter channel is mapped to the third left parameter channel in the vehicle playback device located in the rear of the vehicle, including: the left 3D channel in the first left parameter channel is mapped to the left rear 3D channel in the third left parameter channel; the third right parameter channel also includes a right rear 3D channel, and the first right parameter channel is mapped to the third right parameter channel in the vehicle playback device located in the rear of the vehicle, including: the right 3D channel in the first right parameter channel is mapped to the right rear 3D channel in the third right parameter channel.

[0173] Optionally, the third left parameter channel further includes a left rear surround channel, and the first left parameter channel is mapped to the third left parameter channel in the vehicle playback device located in the rear of the vehicle, including: the left parameter surround channel in the first left parameter channel is mapped to the left rear surround channel in the third left parameter channel; the third right parameter channel further includes a right rear surround channel, and the first right parameter channel is mapped to the third right parameter channel in the vehicle playback device located in the rear of the vehicle, including: the right parameter surround channel in the first right parameter channel is mapped to the right rear surround channel in the third right parameter channel.

[0174] Optionally, the left parameter surround channel is the left rear surround channel, and the right parameter surround channel is the right rear surround channel; the left surround channel in the first left parameter channel is mapped to the left rear door channel, and the right surround channel in the first right parameter channel is mapped to the right rear door channel.

[0175] It should be noted that the aforementioned channel mapping device can be the in-vehicle playback device in the above method embodiment of this application, or it can be a functional module and / or functional entity in the in-vehicle playback device that can realize the function of the device embodiment. This application embodiment does not limit it.

[0176] In this embodiment, each module can implement the channel mapping method provided in the above method embodiments and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0177] The beneficial effects of the various implementation methods in this embodiment can be found in the beneficial effects of the corresponding implementation methods in the above-mentioned audio channel mapping method embodiments. To avoid repetition, they will not be repeated here.

[0178] This application also provides an in-vehicle playback device, such as... Figure 13 As shown, the in-vehicle playback device may include: a processor 301, a player 302, a memory 303, and a program or instructions stored in the memory 303 and executable on the processor 301. When the program or instructions are executed by the processor 301, they can implement the various processes of the channel mapping method provided in the above method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0179] This application provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the channel mapping method provided in the above-described method embodiments and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0180] This application provides a vehicle, including, as described in the embodiments of the present application. Figure 13 The vehicle-mounted playback device shown includes a speaker corresponding to each channel of the device. This vehicle can implement all processes of the channel mapping method provided in the above embodiments and achieve the same technical effect; therefore, to avoid repetition, further details are omitted here.

[0181] This application also provides a computer program product, which includes a computer program or instructions. When the computer program product is run on a processor, the processor executes the computer program or instructions to implement the various processes of the channel mapping method provided in the above method embodiments and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0182] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described channel mapping method embodiments and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0183] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0184] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, servers, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units through some interfaces, and may be electrical, mechanical, or other forms.

[0185] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0186] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0187] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0188] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A channel mapping method applied to in-vehicle playback devices, characterized in that, The method includes: Obtain the target playback mode of the in-vehicle playback device; Based on the target playback mode, the playback mapping relationship of the in-vehicle playback device is determined. The playback mapping relationship is used to indicate the correspondence between the channels of the panoramic sound audio and the channels of the in-vehicle playback device. The panoramic sound audio at least resolves the audio signal of the first left parameter channel and the audio signal of the first right parameter channel. The first left parameter channel includes at least two left parameter channels, and the first right parameter channel includes at least two right parameter channels. Based on the playback mapping relationship, the in-vehicle playback device is controlled to play the panoramic sound audio; Wherein, when the target playback mode is the front-row playback mode, the playback mapping relationship includes: The first left parameter channel of the immersive sound audio is mapped to the second left parameter channel of the in-vehicle playback device located in the front row of the vehicle, and the first right parameter channel of the immersive sound audio is mapped to the second right parameter channel of the in-vehicle playback device located in the front row of the vehicle. The second left parameter channel includes at least the left front door channel, and the second right parameter channel includes at least the right front door channel; or... When the target playback mode is the rear-seat playback mode, the playback mapping relationship includes: The first left parameter channel is mapped to the third left parameter channel in the vehicle playback device located in the rear row of the vehicle, and the first right parameter channel is mapped to the third right parameter channel in the vehicle playback device located in the rear row of the vehicle. The third left parameter channel includes at least the left rear door channel, and the third right parameter channel includes at least the right rear door channel. The step of controlling the in-vehicle playback device to play the panoramic sound audio based on the playback mapping relationship includes: After merging the contents of at least two left parameter channels in the first left parameter channel, the content is played through one of the corresponding second left parameter channel or the third left parameter channel to reduce the loss of the sense of direction of the panoramic audio sound through downmixing. and / or; After merging the contents of at least two right parameter channels in the first right parameter channel, the content is played through one of the corresponding second right parameter channels or the third right parameter channel to reduce the loss of the sense of direction of the panoramic audio sound through downmixing.

2. The method according to claim 1, characterized in that, When the target playback mode is the front-row playback mode, the playback mapping relationship further includes: If the vehicle has a first center channel in the front row, then the center channel of the panoramic sound audio is mapped to the first center channel. If the vehicle does not have a center channel in the front row, the center channel of the panoramic sound audio is mapped to the left front door channel and the right front door channel.

3. The method according to claim 1, characterized in that, When the target playback mode is the front-row playback mode, the playback mapping relationship further includes: If the vehicle is equipped with a first subwoofer channel in the front row, then the subwoofer channel of the panoramic audio is mapped to the first subwoofer channel. If the vehicle does not have a subwoofer channel in the front row, the subwoofer channel of the panoramic sound audio is mapped to the left front door channel and the right front door channel.

4. The method according to any one of claims 1 to 3, characterized in that, The second left parameter channel also includes a front left 3D channel. The first left parameter channel of the panoramic audio is mapped to the second left parameter channel in the in-vehicle playback device located in the front row of the vehicle, including: The left 3D channel in the first left parameter channel is mapped to the left front 3D channel in the second left parameter channel; The second right-parameter channel also includes a right front 3D channel. The first right-parameter channel of the panoramic audio is mapped to the second right-parameter channel in the in-vehicle playback device located in the front row of the vehicle, including: The right 3D channel in the first right parameter channel is mapped to the right front 3D channel in the second right parameter channel.

5. The method according to claim 1, characterized in that, When the target playback mode is the rear-seat playback mode, the playback mapping relationship further includes: If the vehicle is equipped with a second subwoofer channel in the rear, then the subwoofer channel of the panoramic audio is mapped to the second subwoofer channel. If the vehicle does not have a subwoofer channel in the rear, the subwoofer channel of the panoramic audio is mapped to the left rear door channel and the right rear door channel.

6. The method according to claim 1, characterized in that, When the target playback mode is the rear-seat playback mode, the playback mapping relationship further includes: If the vehicle has a second center channel in the rear, then the center channel of the panoramic audio is mapped to the second center channel. If the rear seats of the vehicle do not have a center channel, then the center channel of the panoramic sound audio is mapped to the left rear door channel and the right rear door channel.

7. The method according to any one of claims 1 to 3, 5 and 6, characterized in that, The third left parameter channel also includes a left rear 3D channel, and the first left parameter channel is mapped to the third left parameter channel located in the rear of the vehicle in the in-vehicle playback device, including: The left 3D channel in the first left parameter channel is mapped to the left rear 3D channel in the third left parameter channel; The third right-parameter channel further includes a right rear 3D channel, and the first right-parameter channel is mapped to the third right-parameter channel located in the rear of the vehicle in the in-vehicle playback device, including: The right 3D channel in the first right parameter channel is mapped to the right rear 3D channel in the third right parameter channel.

8. The method according to any one of claims 1 to 3, 5 and 6, characterized in that, The third left-parameter channel further includes a left rear surround channel, and the first left-parameter channel is mapped to the third left-parameter channel located in the rear of the vehicle in the in-vehicle playback device, including: The left parameter surround channel in the first left parameter channel is mapped to the left rear surround channel in the third left parameter channel. The third right-parameter channel further includes a right rear surround channel, and the first right-parameter channel is mapped to the third right-parameter channel located in the rear of the vehicle in the in-vehicle playback device, including: The right-parameter surround channel in the first right-parameter channel is mapped to the right rear surround channel in the third right-parameter channel.

9. The method according to claim 8, characterized in that, The left parameter surround channel is the left rear surround channel, and the right parameter surround channel is the right rear surround channel; The left surround channel in the first left parameter channel is mapped to the left rear door channel, and the right surround channel in the first right parameter channel is mapped to the right rear door channel.

10. A channel mapping device, characterized in that, The device includes: an acquisition module, a determination module, and a control module; The acquisition module is used to acquire the target playback mode of the in-vehicle playback device; The determining module is used to determine the playback mapping relationship of the in-vehicle playback device according to the target playback mode. The playback mapping relationship is used to indicate the correspondence between the channels of the panoramic sound audio and the channels of the in-vehicle playback device. The panoramic sound audio is at least parsed to obtain the audio signal of the first left parameter channel and the audio signal of the first right parameter channel. The first left parameter channel includes at least two left parameter channels, and the first right parameter channel includes at least two right parameter channels. The control module is used to control the in-vehicle playback device to play the panoramic sound audio based on the playback mapping relationship; Wherein, when the target playback mode is the front-row playback mode, the playback mapping relationship includes: The first left parameter channel of the panoramic sound audio is mapped to the second left parameter channel of the in-vehicle playback device located in the front row of the vehicle, the first right parameter channel of the panoramic sound audio is mapped to the second right parameter channel of the in-vehicle playback device located in the front row of the vehicle, and the center channel of the panoramic sound audio is mapped to the first center channel of the in-vehicle playback device located in the front row of the vehicle. The second left parameter channel includes at least the left front door channel, and the second right parameter channel includes at least the right front door channel. When the target playback mode is the rear-seat playback mode, the playback mapping relationship includes: The first left parameter channel is mapped to the third left parameter channel in the vehicle playback device located in the rear row of the vehicle, and the first right parameter channel is mapped to the third right parameter channel in the vehicle playback device located in the rear row of the vehicle. The third left parameter channel includes at least the left rear door channel, and the third right parameter channel includes at least the right rear door channel. The control module is specifically used for: After merging the contents of at least two left parameter channels in the first left parameter channel, the content is played through one of the corresponding second left parameter channel or the third left parameter channel to reduce the loss of the sense of direction of the panoramic audio sound through downmixing. and / or; After merging the contents of at least two right parameter channels in the first right parameter channel, the content is played through one of the corresponding second right parameter channels or the third right parameter channel to reduce the loss of the sense of direction of the panoramic audio sound through downmixing.

11. A vehicle-mounted playback device, characterized in that, It includes a processor, a player, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the channel mapping method as described in any one of claims 1 to 9.

12. A vehicle, characterized in that, It includes the in-vehicle playback device as described in claim 11, and at least one speaker corresponding to each channel of the in-vehicle playback device.

13. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the channel mapping method as described in any one of claims 1 to 9.

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