Vehicle audio system based on drive channel multiplexing, audio playing method and equipment

Abstract

The embodiment of the invention relates to the field of vehicle audio, and discloses a vehicle audio system based on drive channel multiplexing, an audio playing method and equipment, and the system comprises an audio obtaining module which is used for obtaining sound source data and an audio mode instruction; the signal processing module is used for processing the sound source data in a corresponding audio mode according to an audio mode instruction; the power amplification module is used for receiving the signal output by the signal processing module and amplifying the signal to obtain an audio signal; the power amplification module is connected with the channel switching module through a group of driving channels; and the channel switching module is respectively connected with the first audio equipment group and the second audio equipment group through the first sub-driving channel group and the second sub-driving channel group, and is used for switching the first sub-driving channel and / or the second sub-driving channel corresponding to the audio mode to be opened according to the audio mode instruction so as to enable the audio signal to drive the target audio equipment. According to the invention, the number of audio driving channels can be reduced.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of vehicle audio, and in particular to a vehicle audio system, an audio playback method and a device based on driving channel multiplexing. Background Art

[0002] With the development of in-car audio systems, the number of speakers used in in-car audio systems is increasing. At the same time, with the diversification of in-car audio functions, in-car speakers are also arranged in headrests, A / B pillars, ceilings and other locations to meet various audio function requirements, such as active noise reduction, independent sound zones, etc. When a large number of speakers are introduced into the vehicle, or when multiple locations in the vehicle need to introduce more speakers, in order to support the operation of the speakers, a drive channel needs to be introduced for each speaker, resulting in the addition of more drive channels to the entire vehicle audio system.

[0003] In other words, vehicles with richer in-car audio functions have high demands on the number of channels of audio amplifiers. While fully meeting the needs of various audio functions, the number of in-car amplifier channels may need to reach 40 to 50, or even higher, which is difficult to achieve in mass production in the short term. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a vehicle audio system, an audio playback method and a device based on drive channel multiplexing, which can save the number of audio drive channels while ensuring that the audio functions in the vehicle are not reduced.

[0005] To solve the above technical problems, an embodiment of the present invention provides a vehicle audio system based on driving channel multiplexing, including:

[0006] Audio acquisition module, used to obtain audio source data and audio mode instructions;

[0007] A signal processing module, used for processing the sound source data in a corresponding audio mode according to the audio mode instruction;

[0008] A power amplifier module, used for receiving and amplifying the signal output by the signal processing module to obtain an audio signal; the power amplifier module is connected to the channel switching module through a group of driving channels;

[0009] The channel switching module is connected to the first audio device group and the second audio device group respectively through the first sub-driving channel group and the second sub-driving channel group, and is used to switch the first sub-driving channel and / or the second sub-driving channel corresponding to the audio signal to open according to the audio mode instruction so that the audio signal drives the target audio device.

[0010] In some embodiments, the power amplification module is connected to some first audio devices in the first audio device group and some second audio devices in the second audio device group through two groups of direct drive channels, respectively; wherein each of the direct drive channels is connected to one first audio device or one second audio device.

[0011] In some embodiments, the channel switching module is connected to all the first audio devices in the first audio device group except the part of the first audio devices through the first sub-driving channel group, and is connected to all the second audio devices in the second audio device group except the part of the second audio devices through the second sub-driving channel group; wherein each of the first sub-driving channels in the first sub-driving channel group is connected to one of the first audio devices, and each of the second sub-driving channels in the second sub-driving channel group is connected to one of the second audio devices.

[0012] In some embodiments, the channel switching module is connected to all first audio devices in the first audio device group through the first sub-driving channel group, and is connected to all second audio devices in the second audio device group through the second sub-driving channel group; wherein each of the first sub-driving channels is connected to one of the first audio devices, and each of the second sub-driving channels is connected to one of the second audio devices.

[0013] In some embodiments, the channel switching module is used to route the group of drive channels into the first sub-drive channel group and the second sub-drive channel group; wherein each drive channel in the group of drive channels is routed to one first sub-drive channel and one second sub-drive channel; and the number of the first sub-drive channels in the first sub-drive channel group is the same as the number of the second sub-drive channels in the second sub-drive channel group.

[0014] In some embodiments, the channel switching module is used to bifurcate the routing of the group of drive channels into the first sub-drive channel group and the second sub-drive channel group; wherein each drive channel in the group of drive channels is routed to one first sub-drive channel and at least one second sub-drive channel; and the number of the first sub-drive channels in the first sub-drive channel group is different from the number of the second sub-drive channels in the second sub-drive channel group.

[0015] In some embodiments, the second audio device group is any one of a headrest speaker group, an A / B pillar speaker group, a ceiling speaker, a speaker array, and a seat vibrator group; the first audio device group is the audio device in the whole vehicle audio device except the second audio device group.

[0016] An embodiment of the present invention also provides an audio playback method, which is applied to the vehicle audio system based on driving channel multiplexing as described above, including: acquiring sound source data and audio mode instructions, performing corresponding mode processing on the sound source data according to the audio mode instructions; amplifying the sound source data after mode processing to obtain an audio signal; and switching the first sub-driving channel and / or the second sub-driving channel corresponding to the audio signal to open according to the audio mode instructions so that the audio signal drives the target audio device.

[0017] An embodiment of the present invention also provides an electronic device, comprising: at least one processor; and a memory communicatively connected to at least one of the processors; wherein the memory stores instructions executable by at least one of the processors, and the instructions are executed by at least one of the processors so that at least one of the processors can execute the audio playback method as described above.

[0018] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program, wherein the computer program implements the audio playback method as described above when executed by a processor.

[0019] In the embodiment of the present invention, a channel switching module is set in combination with an audio mode instruction. When the audio mode instruction indicates different modes, the channel switching module controls the connection switching between the first sub-driving channel and / or the second sub-driving channel (audio power amplifier channel) and different target audio devices, so as to realize the working status of different audio devices at different times, thereby reducing the total number of power amplifier channels required for the entire vehicle audio system and improving the possibility of mass production of multiple complex audio system solutions in the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] One or more embodiments are exemplarily described by the pictures in the corresponding drawings, and these exemplary descriptions do not constitute limitations on the embodiments.

[0021] Figure 1 The structure of a vehicle audio system based on driving channel multiplexing provided by an embodiment of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 2 The structure of a vehicle audio system based on driving channel multiplexing provided by an embodiment of the present invention is shown in FIG. Figure 2 ;

[0023] Figure 3 The structure of a vehicle audio system based on driving channel multiplexing provided by an embodiment of the present invention is shown in FIG. Figure 3 ;

[0024] Figure 4 The structure of a vehicle audio system based on driving channel multiplexing provided by an embodiment of the present invention is shown in FIG. Figure 4 ;

[0025] Figure 5 The structure of a vehicle audio system based on driving channel multiplexing provided by an embodiment of the present invention is shown in FIG. Figure 5 ;

[0026] Figure 6 The structure of a vehicle audio system based on driving channel multiplexing provided by an embodiment of the present invention is shown in FIG. Figure 6 ;

[0027] Figure 7 The structure of a vehicle audio system based on driving channel multiplexing provided by an embodiment of the present invention is shown in FIG. Figure 7 ;

[0028] Figure 8 The structure of a vehicle audio system based on driving channel multiplexing provided by an embodiment of the present invention is shown in FIG. Figure 8 ;

[0029] Fig. 9 The structure of a vehicle audio system based on driving channel multiplexing provided by an embodiment of the present invention is shown in FIG. Figure 9 ;

[0030] Fig.10 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in the embodiments of the present invention, many technical details are proposed in order to enable the reader to better understand the present invention. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present invention can be implemented. The division of the following embodiments is for the convenience of description and should not constitute any limitation on the specific implementation of the present invention. The various embodiments can be combined and referenced with each other without contradiction. It should be noted that the following content is only for the convenience of understanding the implementation details provided, and is not necessary for the implementation of this solution.

[0032] One embodiment of the present invention relates to a vehicle audio system based on driving channel multiplexing, such as Figure 1 As shown, the vehicle audio system based on driving channel multiplexing in this embodiment specifically includes the following contents.

[0033] An audio acquisition module is used to acquire audio source data and audio mode instructions; a signal processing module is used to process the audio source data in a corresponding audio mode according to the audio mode instructions; a power amplification module is used to receive the signal output by the signal processing module and amplify it to obtain an audio signal; the power amplification module is connected to the channel switching module through a group of drive channels; the channel switching module is connected to the first audio device group and the second audio device group through the first sub-drive channel group and the second sub-drive channel group respectively, and is used to switch the first sub-drive channel and / or the second sub-drive channel corresponding to the audio mode according to the audio mode instruction to open so that the audio signal drives the target audio device.

[0034] Specifically, Figure 1 As shown, the vehicle system issues an instruction to switch the audio mode according to the user's instruction or the actual application scenario (such as a music playback scenario or an incoming call scenario, etc.). The audio mode may include a music mode, a navigation mode, a call mode, a privacy mode, etc. The present invention does not impose specific restrictions on this. In different audio modes, the corresponding speakers or vibrators (audio devices) working in the audio equipment of the whole vehicle are different. The vehicle audio system of this embodiment obtains the user's audio mode instruction and the corresponding sound source data played under the audio mode instruction through the audio acquisition module. After obtaining the sound source data and the audio mode instruction, the audio acquisition module will send the sound source data and the audio mode instruction to the signal processing module, and send the audio mode instruction to the channel switching module at the same time. The signal processing module can perform digital-to-analog conversion on the sound source data and convert it into an analog signal. The analog signal is amplified by the power amplifier module to obtain an audio signal that can drive the audio device to make sound and is sent to the channel switching module. During this process, since the sound source data may be different, the audio mode indicated by the audio mode instruction may also be different. Therefore, the signal processing module will also perform the processing steps of the corresponding mode according to the audio mode indicated by the audio mode instruction. The processing steps required for each audio mode may be pre-set. The present invention does not impose specific restrictions on the processing steps performed by each audio mode in the signal processing module.

[0035] Moreover, since the channel switching module has received the audio mode instruction sent by the audio acquisition module in advance, the audio mode indicated by the user can be determined according to the audio mode instruction. Each audio mode corresponds to a different audio device to be driven, and the audio device corresponding to each audio mode can be pre-set, that is, each audio mode corresponds to the driving channel to be switched on by the channel switching module. The channel switching module is connected to the first audio device group and the second audio device group through the first sub-driving channel group and the second sub-driving channel group, respectively. Accordingly, after the channel switching module receives the audio signal sent by the power amplifier module through a group of driving channels, the first sub-driving channel and / or the second sub-driving channel corresponding to the audio mode are switched on according to the audio mode instruction so that the audio signal drives the target audio device. The target audio device can be the first audio device in the first audio device group, or the second audio device in the second audio device group, or it can include both the first audio device in the first audio device group and the second audio device in the second audio device group, and the present invention does not make specific restrictions on this.

[0036] Compared with the related art, in the above-mentioned embodiment of the present invention, a channel switching module is set in combination with an audio mode instruction. When the audio mode instruction indicates different modes, the channel switching module controls the connection switching between the first sub-driving channel and / or the second sub-driving channel (audio amplifier channel) and different target audio devices, so as to realize the working status of different audio devices at different times, thereby reducing the total number of amplifier channels required for the entire vehicle audio system and improving the possibility of mass production of multiple complex audio system solutions in the vehicle.

[0037] Another embodiment of the present invention relates to a vehicle audio system based on driving channel multiplexing. The content of this embodiment is a refinement of the above-mentioned embodiment, and specifically includes the following content.

[0038] In one example, the power amplification module is connected to some first audio devices in the first audio device group and some second audio devices in the second audio device group through two groups of direct drive channels, wherein each direct drive channel is connected to one first audio device or one second audio device.

[0039] Specifically, the power amplification module can have three groups of driving channels, two groups of direct driving channels are used to connect to part of the first audio devices in the first audio device group and part of the second audio devices in the second audio device group, respectively, and the remaining group of driving channels is connected to the channel switching module for realizing multiplexing of the group of driving channels through the channel switching module.

[0040] Correspondingly, in this case, the specific connection relationship between the channel switching module and the first audio device group and the second audio device group respectively through the first sub-driving channel group and the second sub-driving channel group is: the channel switching module is connected to all first audio devices except some first audio devices in the first audio device group through the first sub-driving channel group, and is connected to all second audio devices except some second audio devices in the second audio device group through the second sub-driving channel group; wherein, each first sub-driving channel in the first sub-driving channel group is connected to a first audio device, and each second sub-driving channel in the second sub-driving channel group is connected to a second audio device.

[0041] Specifically, each first audio device in the first audio device group in this embodiment is connected to a group of direct drive channels of the power amplifier module and each first sub-drive channel of the first sub-drive channel group of the channel switching module. Each second audio device in the second audio device group is connected to another group of direct drive channels of the power amplifier module and each second sub-drive channel of the second sub-drive channel group of the channel switching module. The second audio device group can be any one of a headrest speaker group, an A / B column speaker group, a ceiling speaker, a speaker array, and a seat vibrator group; the first audio device group is other audio devices in the vehicle audio device except the second audio device group.

[0042] It should be noted that the channel switching module can be implemented by a switching switch controlled by a motor or a relay, or by a semiconductor power switching switch, and this embodiment does not impose specific restrictions on this. That is, each first sub-driving channel connected to all first audio devices except some first audio devices in the first audio device group, and each second sub-driving channel connected to all second audio devices except some second audio devices in the second audio device group have two states of conduction and non-conduction, and the channel switching module can control the conduction of any first sub-driving channel and any second sub-driving channel through the switching switch.

[0043] For example, Figure 2 As shown, taking the second audio device group as a headrest speaker group as an example, at this time, the first audio device group is a non-headrest speaker group of the whole vehicle, some headrest speakers in the headrest speaker group (the second audio device group) and some non-headrest speakers in the non-headrest speaker group multiplex part of the driving channels through the channel switching module as shown in the example Figure 2As shown. In this example, some of the headrest speakers in the headrest speaker group are directly connected to the power amplifier module through a group of direct drive channels, and the remaining headrest speakers in the headrest speaker group are connected to the channel switching module through a second sub-drive channel group. At this time, assuming that the audio mode instruction indicates a full-vehicle entertainment mode that requires both the headrest speakers and other non-headrest speakers to work, the headrest speakers directly connected to the power amplifier module can work simultaneously with the non-headrest speakers of the entire vehicle to enhance the audio immersion at the corresponding seat position; in a private mode that requires all headrest speakers to work, such as Figure 2 As shown, the channel switching module can switch on the headrest speaker connected to the channel switching module so that it works simultaneously with the headrest speaker directly connected to the power amplification module, thereby improving the privacy of the partitioned playback of the audio content.

[0044] Alternatively, in another example, the channel switching module is connected to all first audio devices in the first audio device group through the first sub-driving channel group, and is connected to all second audio devices in the second audio device group through the second sub-driving channel group; wherein each first sub-driving channel is connected to one first audio device, and each second sub-driving channel is connected to one second audio device.

[0045] Specifically, this embodiment is an alternative embodiment of the aforementioned embodiment, and it is not necessary to set a direct drive channel to connect the first audio device group and the second audio device group, but all of them are connected to the second sub-drive channel group through the first sub-drive channel group using the channel switching module. For example, taking the second audio device group as a headrest speaker group, in this case, the first audio device group is a non-headrest speaker for the entire vehicle, and some of the headrest speakers and some of the non-headrest speakers in the headrest speaker group (the second audio device group) reuse all the drive channels through the channel switching module. Figure 3 , Figure 4 As shown in Figure 1, under this condition, the non-headrest speakers and headrest speakers of the vehicle connected to the channel switching module do not work at the same time. For example, in the full vehicle entertainment mode, if Figure 3 As shown, the channel switching module is switched to the non-headrest speakers of the vehicle. At this time, the non-headrest speakers of the vehicle work, and the headrest speakers do not work; in the private mode, such as Figure 4 As shown, the channel switching module is switched to the headrest speaker, and the headrest speaker works, while the non-headrest speaker of the whole vehicle does not work. It should be noted that when the channel switching module switches the sub-drive channel, it can choose to switch only some channels according to the actual application needs, so as to realize the application scenario in which some headrest speakers and some whole vehicle speakers work at the same time, and the number of headrest speakers working at the same time with the whole vehicle speakers can also be flexibly adjusted according to the application needs, and the present invention does not make specific restrictions on this.

[0046] In addition, in this embodiment, the channel switching module is also used to route a group of drive channels into a first sub-drive channel group and a second sub-drive channel group; wherein each drive channel in a group of drive channels is routed to a first sub-drive channel and a second sub-drive channel; and the number of first sub-drive channels in the first sub-drive channel group is the same as the number of second sub-drive channels in the second sub-drive channel group.

[0047] Specifically, Figure 2 , Figure 3 As shown, in a group of driving channels connecting the power amplifier module and the channel switching module, each driving channel is routed to a first sub-driving channel and a second sub-driving channel in the channel switching module. It should be noted that the first sub-driving channel and the second sub-driving channel corresponding to the same driving channel cannot be used at the same time. That is, when the first sub-driving channel corresponding to the same driving channel is turned on for transmitting an audio signal, the second sub-driving channel corresponding to the driving channel cannot transmit an audio signal.

[0048] Accordingly, the channel switching module is used to route a group of drive channels into a first sub-drive channel group and a second sub-drive channel group; wherein each drive channel in a group of drive channels is routed to a first sub-drive channel and at least one second sub-drive channel; and the number of first sub-drive channels in the first sub-drive channel group is different from the number of second sub-drive channels in the second sub-drive channel group.

[0049] Specifically, in a group of driving channels connecting the power amplifier module and the channel switching module, each driving channel is routed to a first sub-driving channel and at least one second sub-driving channel in the channel switching module. The present invention does not limit the specific number of the multiple second sub-driving channels, which can be one, two, three or four. Since each driving channel is routed to a first sub-driving channel and multiple second sub-driving channels in the channel switching module, if the number of first audio devices in the first audio device group is less than or equal to the second audio devices in the second audio device group, then in this embodiment, there will be a certain number of second audio devices corresponding to the multiple second sub-driving channels. It should be noted that the difference between this embodiment and the aforementioned embodiment is that the number of the first sub-driving channels and the second sub-driving channels in the aforementioned embodiment must be the same, while the number of the first sub-driving channels and the second sub-driving channels in this embodiment is different.

[0050] like Figure 5 As shown, taking 4 driving channels (a group of driving channels) and 4 headrest speakers (a second audio device group) as an example, the 4 driving channels of the power amplifier are connected to a channel switching module, and the link of each driving channel in the channel switching module is routed to multiple forked links respectively. Figure 5In the example shown, drive channel 4 is routed to a first sub-drive channel (connected to a non-headrest speaker) and four second sub-drive channels (connected to headrest speakers 1, 2, 3, and 4); drive channel 3 is routed to a first sub-drive channel (connected to a non-headrest speaker) and three second sub-drive channels (connected to headrest speakers 2, 3, and 4); drive channel 2 is routed to a first sub-drive channel (connected to a non-headrest speaker) and two second sub-drive channels (connected to headrest speakers 3 and 4); drive channel 1 is routed to a first sub-drive channel (connected to a non-headrest speaker for the entire vehicle) and a second sub-drive channel (connected to headrest speaker 4). The embodiment of the present invention can realize that different forked links of the same drive channel are connected to different headrest speakers, thereby realizing the function of multiplexing a drive channel for different speakers at the same time, and this connection can be switched according to actual application needs.

[0051] The following is for this embodiment Figure 5 Taking the second audio device group as the headrest speaker group as an example, several application examples in practical applications are given. It should be noted that in the following examples, the headrest speaker can be replaced by any one of the A / B column speakers, ceiling speakers, speaker arrays, and seat vibrators.

[0052] In one application, such as Figure 5 As shown, Figure 5 This is an example of a channel switching module switching all four drive channels to the headrest speakers, where the four drive channels are connected to the four headrest speakers, and each speaker is driven by an independent channel. This method can realize the sound quality mode and privacy mode of the headrest speakers. In the sound quality mode, headrest speakers 1 and 3 are used to play the left channel of the input audio at the same time, and headrest speakers 2 and 4 are used to play the right channel of the input audio at the same time to achieve the best sound quality; in the privacy mode, headrest speaker 1 is used to play the left channel of the input audio, headrest speaker 3 is used to offset the sound leakage of headrest speaker 1 in the far field to improve privacy, headrest speaker 2 is used to play the right channel of the input audio, and headrest speaker 4 is used to offset the sound leakage of headrest speaker 2 in the far field to improve privacy. Similarly, speakers 3 and 4 can also be used to play the input audio, while speakers 1 and 2 can be used to offset the sound leakage in the far field. The present invention does not make specific limitations on this.

[0053] In another application case, such as Figure 6 As shown, Figure 6This is an example of a channel switching module switching two driving channels to headrest speakers, where driving channel 4 drives headrest speakers 1 and 3 at the same time, and driving channel 3 drives headrest speakers 2 and 4 at the same time. This method can also realize the switching of sound quality mode and privacy mode. For example, in sound quality mode, headrest speakers 1 and 3 are used to play the left channel of input audio, and headrest speakers 2 and 4 are used to play the right channel of input audio; in privacy mode, the left and right channels of input audio are mixed to mono in advance and played by headrest speakers 1 and 3, and headrest speakers 2 and 4 are used to offset the sound leakage of headrest speakers 1 and 3 in the far field. Similarly, headrest speakers 2 and 4 can also be used to play input audio, while headrest speakers 1 and 3 can be used to offset the sound leakage in the far field. It should be noted that in this case, it is not necessary for each driving channel to be connected to two speakers, and each driving channel can be selectively connected to one or two headrest speakers (for example, driving channel 4 is only connected to speaker 1, driving channel 3 is only connected to speaker 2, etc.).

[0054] In another application case, such as Figure 7 As shown, Figure 7 This is an example of the channel switching module switching two driving channels to the headrest speakers, where driving channel 4 drives speakers 1 and 2 at the same time, and driving channel 3 drives speakers 3 and 4 at the same time. In this connection mode, the headrest speakers can be used to implement the privacy mode. In this mode, the left and right channels of the input audio are mixed to mono in advance and played by headrest speakers 1 and 2. Headrest speakers 3 and 4 are used to offset the sound leakage of headrest speakers 1 and 2 in the far field. Similarly, headrest speakers 3 and 4 can also be used to play input audio, while headrest speakers 1 and 2 can be used to offset the sound leakage in the far field.

[0055] In another application case, Figure 8 As shown, Figure 8 This is an example of the channel switching module switching two driving channels to the headrest speakers. Driving channel 4 drives headrest speakers 1 and 4 at the same time, and driving channel 3 drives headrest speakers 2 and 3 at the same time. In this connection mode, the headrest speakers can be used to implement the privacy mode. In this mode, the left and right channels of the input audio are mixed to mono in advance and played by headrest speakers 1 and 4. Headrest speakers 2 and 3 are used to offset the sound leakage of headrest speakers 1 and 4 in the far field. Similarly, headrest speakers 2 and 3 can also be used to play input audio, while headrest speakers 1 and 4 can be used to offset far-field sound leakage. It should be noted that in this case, it is not necessary for each driving channel to be connected to two headrest speakers. Each driving channel can be selectively connected to one or two headrest speakers (for example, driving channel 4 is only connected to headrest speaker 1, driving channel 3 is only connected to headrest speaker 2, etc.).

[0056] In another application case, Fig. 9As shown, Fig. 9 This is an example where the channel switching module switches only one driving channel to the headrest speaker, and driving channel 4 drives headrest speakers 1, 2, 3, and 4 at the same time. In this connection mode, the headrest speaker can be used for mono audio playback. In this mode, the left and right channels of the input audio are mixed to mono in advance and played by headrest speakers 1, 2, 3, and 4. It should be noted that in this case, it is not necessary for the driving channel to be connected to the four speakers at the same time, and the driving channel can be selectively connected to at least one of the four headrest speakers.

[0057] Compared with the related art, the embodiment of the present invention realizes the multiplexing of the driving channel by routing one driving channel into at least two sub-driving channels and connecting them to different audio devices. That is, since the number of bifurcated links that may correspond to each power amplifier driving channel is greater than or equal to 1, different bifurcated links of the same driving channel can be connected to different audios, thereby realizing the function of multiplexing one power amplifier output channel for different speakers at the same time, and this connection can be switched according to actual application needs, saving the number of driving channels of the power amplifier module.

[0058] Another embodiment of the present invention further relates to an audio playback method, which is applied to a vehicle audio system based on driving channel multiplexing in any of the above embodiments, and specifically comprises the following steps:

[0059] Step 101: Acquire audio source data and an audio mode instruction, and process the audio source data in a corresponding audio mode according to the audio mode instruction;

[0060] Step 102: amplify the processed sound source data to obtain an audio signal;

[0061] Step 103: according to the audio mode instruction, the first sub-driving channel and / or the second sub-driving channel corresponding to the audio mode are switched on so that the audio signal drives the target audio device.

[0062] It is not difficult to find that this embodiment is a method embodiment corresponding to the aforementioned embodiments of the vehicle audio system based on driving channel multiplexing. The specific implementation details of this embodiment have been recorded in the aforementioned embodiments of the vehicle audio system based on driving channel multiplexing, and the present invention will not be repeated here.

[0063] Another embodiment of the present invention relates to an electronic device, such as Fig.10 As shown, it includes at least one processor 202; and a memory 201 that is communicatively connected to the at least one processor 202; wherein the memory 201 stores instructions that can be executed by the at least one processor 202, and the instructions are executed by the at least one processor 202 so that the at least one processor 202 can execute the above method embodiment.

[0064] Among them, the memory 201 and the processor 202 are connected in a bus manner, and the bus may include any number of interconnected buses and bridges, and the bus connects one or more processors 202 and various circuits of the memory 201 together. The bus can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art, and therefore, are not further described herein. The bus interface provides an interface between the bus and the transceiver. The transceiver can be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. The data processed by the processor 202 is transmitted on a wireless medium through an antenna, and further, the antenna also receives data and transmits the data to the processor 202.

[0065] The processor 202 is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management and other control functions. The memory 201 can be used to store data used by the processor 202 when performing operations.

[0066] Another embodiment of the present invention relates to a computer-readable storage medium storing a computer program, which implements the above method embodiment when executed by a processor.

[0067] That is, those skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including several instructions for making a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0068] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present invention, and that in actual applications, various changes may be made in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A vehicle audio system based on driving channel multiplexing, characterized in that: include: Audio acquisition module, used to obtain audio source data and audio mode instructions; A signal processing module, used for processing the sound source data in a corresponding audio mode according to the audio mode instruction; A power amplifier module, used for receiving and amplifying the signal output by the signal processing module to obtain an audio signal; the power amplifier module is connected to the channel switching module through a group of driving channels; The channel switching module is connected to the first audio device group and the second audio device group respectively through the first sub-driving channel group and the second sub-driving channel group, and is used to switch the first sub-driving channel and / or the second sub-driving channel corresponding to the audio mode to open according to the audio mode instruction so that the audio signal drives the target audio device.

2. The vehicle audio system based on driving channel multiplexing according to claim 1, characterized in that: The power amplification module is connected to part of the first audio devices in the first audio device group and part of the second audio devices in the second audio device group through two groups of direct drive channels, wherein each of the direct drive channels is connected to one first audio device or one second audio device.

3. The vehicle audio system based on driving channel multiplexing according to claim 2, characterized in that: The channel switching module is connected to all the first audio devices in the first audio device group except the part of the first audio devices through the first sub-driving channel group, and is connected to all the second audio devices in the second audio device group except the part of the second audio devices through the second sub-driving channel group; Each of the first sub-driving channels in the first sub-driving channel group is connected to one of the first audio devices, and each of the second sub-driving channels in the second sub-driving channel group is connected to one of the second audio devices.

4. The vehicle audio system based on driving channel multiplexing according to claim 1, characterized in that: The channel switching module is connected to all first audio devices in the first audio device group through the first sub-driving channel group, and is connected to all second audio devices in the second audio device group through the second sub-driving channel group; wherein each of the first sub-driving channels is connected to one of the first audio devices, and each of the second sub-driving channels is connected to one of the second audio devices.

5. The vehicle audio system based on driving channel multiplexing according to claim 3 or 4, characterized in that: The channel switching module is used to bifurcate the group of driving channel routes into the first sub-driving channel group and the second sub-driving channel group; Each driving channel in the group of driving channels is routed to one first sub-driving channel and one second sub-driving channel; the number of the first sub-driving channels in the first sub-driving channel group is the same as the number of the second sub-driving channels in the second sub-driving channel group.

6. The vehicle audio system based on driving channel multiplexing according to claim 3 or 4, characterized in that: The channel switching module is used to bifurcate the group of driving channel routes into the first sub-driving channel group and the second sub-driving channel group; Each driving channel in the group of driving channels is respectively routed to one first sub-driving channel and at least one second sub-driving channel; and the number of the first sub-driving channels in the first sub-driving channel group is different from the number of the second sub-driving channels in the second sub-driving channel group.

7. The vehicle audio system based on driving channel multiplexing according to claim 1, characterized in that: The second audio device group is any one of a headrest speaker group, an A / B pillar speaker group, a ceiling speaker group, a speaker array, and a seat vibrator group; the first audio device group is the audio device in the whole vehicle audio device except the second audio device group.

8. An audio playing method, characterized in that: A vehicle audio system based on driving channel multiplexing applied to any one of claims 1 to 7, comprising: Acquire sound source data and an audio mode instruction, and process the sound source data in a corresponding audio mode according to the audio mode instruction; Amplifying the processed sound source data to obtain an audio signal; According to the audio mode instruction, the first sub-driving channel and / or the second sub-driving channel corresponding to the audio mode are switched on so that the audio signal drives the target audio device.

9. An electronic device, characterized in that: at least one processor; as well as, a memory communicatively connected to at least one of the processors; wherein, The memory stores instructions executable by at least one of the processors, wherein the instructions are executed by at least one of the processors to enable at least one of the processors to perform the method as claimed in claim 8 .

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the method according to claim 8.

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