An audio playing method, a vehicle-mounted audio system and a storage medium

Abstract

The application provides an audio playing method, a vehicle-mounted audio system and a storage medium. The audio playing method is applied to the vehicle-mounted audio system (including a plurality of loudspeaker modules arranged at different positions in a vehicle cabin), and comprises: acquiring an audio signal to be played; decomposing the audio signal to obtain a plurality of sound source signals of different categories, wherein each sound source signal comprises a plurality of sub-sound source signals of the same category; establishing a route between all sub-sound source signals and the plurality of loudspeaker modules according to a preset distribution principle, wherein the preset distribution principle indicates a rule that different sub-sound source signals are played through different loudspeaker modules; and playing each sub-sound source signal through a corresponding loudspeaker module according to the route. The application provides more accurate and immersive vehicle-mounted multi-channel surround sound playback, which can effectively improve the overall acoustic experience effect of the vehicle-mounted audio system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of processing and application of audio signals, and in particular to an audio playing method, a vehicle audio system and a storage medium.

BACKGROUND

[0002] As an important part of vehicle entertainment facilities, the vehicle audio system brings users an excellent and immersive driving experience by playing audio in the car cabin. From the development history of the number of speakers in the vehicle audio system, at least four speakers are included in the vehicle audio system in the era of fuel vehicles, and now more than twenty speakers are usually configured in the vehicle audio system in the era of intelligent cabin. It is not difficult to see that the user's pursuit of sound has evolved from the initial simple sound quality improvement to the current desire for sound field sound effects. Therefore, under the multi-speaker architecture of the vehicle audio system, a better and more immersive surround sound experience becomes particularly important.

[0003] In related technologies, the vehicle host, user terminal and the like can mostly only provide two-channel sound sources, which leads to the fact that the vehicle audio system can only achieve surround sound processing by simply upmixing and speaker routing the two-channel sound sources. Of course, a small part of high-end or flagship cars may also increase the surround sense through some binaural crosstalk cancellation sound effect processing. However, neither simply upmixing and speaker routing the two-channel sound sources nor increasing the surround sense through binaural crosstalk cancellation sound effect processing can well create an excellent surround sound experience, and may even adversely affect the sound quality, thereby resulting in poor overall acoustic experience of the vehicle audio system.

[0004] Therefore, it is necessary to improve the way in which the vehicle audio system plays audio.

SUMMARY

[0005] The present application aims to provide an audio playing method, a vehicle audio system and a storage medium, and aims to solve the problem of poor overall acoustic experience of the vehicle audio system in related technologies.

[0006] In order to solve the above technical problems, a first aspect of an embodiment of the present application provides an audio playing method applied to a vehicle audio system, the vehicle audio system comprising a plurality of speaker modules arranged at different positions in a car cabin.

[0007] The audio playing method comprises:

[0008] obtaining an audio signal to be played;

[0009] decomposing the audio signal to obtain a plurality of sound source signals of different categories; wherein each sound source signal comprises a plurality of sub-sound source signals of the same category;

[0010] According to a preset allocation principle, routes between all sub-sound source signals and the plurality of loudspeaker modules are established, wherein the preset allocation principle indicates a rule that different sub-sound source signals are played through different loudspeaker modules.

[0011] According to the routes, each sub-sound source signal is played through a corresponding loudspeaker module.

[0012] The second aspect of the embodiments of the present application provides a vehicle-mounted sound system, comprising a control and processing module arranged in a vehicle cabin, and a plurality of loudspeaker modules connected with the control and processing module, wherein the plurality of loudspeaker modules are respectively located at different positions in the vehicle cabin, and the control and processing module is configured to execute the audio playing method of the first aspect of the embodiments of the present application.

[0013] The third aspect of the embodiments of the present application provides a computer readable storage medium having executable instructions stored thereon, wherein the executable instructions are executed to execute the audio playing method of the first aspect of the embodiments of the present application.

[0014] From the above description, compared with the related art, the beneficial effects of the present application are as follows:

[0015] First, an audio signal to be played is acquired; second, the audio signal is decomposed to obtain a plurality of sound source signals of different categories (such as stringed instrument sound signals), wherein each sound source signal comprises a plurality of sub-sound source signals (such as erhu sound signals, violin sound signals, and cello sound signals) of the same category; then, according to a preset allocation principle, routes between all sub-sound source signals and the plurality of loudspeaker modules are established, wherein the preset allocation principle indicates a rule that different sub-sound source signals are played through different loudspeaker modules; finally, according to the routes, each sub-sound source signal is played through a corresponding loudspeaker module. As can be seen, the present application decomposes the input audio signal into a plurality of sound source signals of different categories (each sound source signal comprises a plurality of sub-sound source signals of the same category) according to the category of the sound source, and plays different sub-sound source signals through loudspeaker modules located at different positions in the vehicle cabin with reference to the preset allocation principle, thereby providing more accurate and immersive vehicle-mounted multi-channel surround sound playback (the playback refers to that different sub-sound source signals are played through different loudspeaker modules), which can effectively improve the overall acoustic experience effect of the vehicle-mounted sound system. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the related art or the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the related art or the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and not all the embodiments. Those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0017] Figure 1 The flowchart of the audio playing method provided by the embodiments of the present application;

[0018] Figure 2 The module block diagram of the car audio system provided by the embodiments of the present application;

[0019] Figure 3 The example diagram of the car audio system provided by the embodiments of the present application;

[0020] Figure 4 The module block diagram of the computer readable storage medium provided by the embodiments of the present application.

DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present application more obvious and easy to understand, the following will combine the embodiments of the present application and its drawings to clearly and completely describe the present application, in which the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout the description. It should be understood that the following described embodiments of the present application are only used to explain the present application, and do not limit the present application, that is, based on the various embodiments of the present application, all other embodiments obtained by those skilled in the art without any creative effort are within the scope of protection of the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0022] Please refer to Figure 1 , Figure 1 The flowchart of the audio playing method provided by the embodiments of the present application, which is applied to a car audio system including a plurality of loudspeaker modules arranged at different positions in the car cabin. The audio playing method includes the following steps 101 to 104.

[0023] Step 101, obtaining an audio signal to be played.

[0024] In the embodiments of the present application, when playing audio through the car audio system, the audio signal to be played needs to be obtained first. The corresponding audio source of the obtained audio signal can be, but is not limited to, a single-channel audio source, a double-channel audio source and a multi-channel audio source, and it can come from a car host or a user terminal such as a mobile phone and a tablet computer.

[0025] Step 102, decompose the audio signal to obtain multiple sound source signals of different categories.

[0026] In the embodiment of the present application, after obtaining the audio signal to be played, the audio signal needs to be decomposed according to the type of the sound source to obtain multiple sound source signals of different categories; wherein each sound source signal includes multiple sub-sound source signals of the same category. It should be noted that the sound source signal can be a single track or multi-track sound source signal configured in advance in the corresponding sound source of the audio signal, including but not limited to left channel audio track, right channel audio track, center channel audio track and surround channel audio track; the sound source signal can also be a single track or multi-track sound source signal separated and extracted from the audio signal, including but not limited to human voice sound source signal, musical instrument sound source signal and background environment sound source signal.

[0027] In addition, the audio signal can have one channel or multiple channels. When the audio signal has multiple channels, the decomposition result of step 102 of the audio signal is to obtain multiple sound source signals of different categories under all channels. Assuming that the audio signal is a dual-channel, the decomposition result of step 102 of the audio signal is to obtain multiple sound source signals of different categories under the left channel and multiple sound source signals of different categories under the right channel.

[0028] Step 103, establishing a route between all sub-sound source signals and multiple loudspeaker modules according to a preset distribution principle.

[0029] In the embodiment of the present application, after separating and extracting multiple sound source signals of different categories from the audio signal, a route between all sub-sound source signals and multiple loudspeaker modules needs to be established according to a preset distribution principle; wherein the preset distribution principle indicates the rule of playing different sub-sound source signals through different loudspeaker modules.

[0030] Specifically, when step 103 is executed, the correlation between sub-sound source signals of the same category can be obtained among all channels, and the frequency of all sub-sound source signals can be obtained, and then the route between all sub-sound source signals and multiple loudspeaker modules is established according to the preset distribution principle with the obtained correlation and frequency as a reference, which will be embodied in detail in the examples given below.

[0031] Step 104, playing each sub-sound source signal through the corresponding loudspeaker module according to the route.

[0032] In the embodiment of the present application, after establishing the route between all sub-sound source signals and multiple loudspeaker modules, each sub-sound source signal needs to be played through the corresponding loudspeaker module according to the established route.

[0033] As can be seen, the embodiment of the present application decomposes the input audio signal into multiple source signals of different categories (each source signal includes multiple sub-source signals of the same category) according to the category of the sound source, and plays different sub-source signals through loudspeaker modules located at different positions in the car cabin according to a preset allocation principle, thereby providing more accurate and immersive car-mounted multi-channel surround sound playback (playback refers to playing different sub-source signals through different loudspeaker modules), which can effectively improve the overall acoustic experience effect of the car audio system.

[0034] Please refer to Figure 2 , Figure 2 The module block diagram of the car audio system provided by the embodiment of the present application is shown.

[0035] As Figure 2 shown, the embodiment of the present application also provides a car audio system, which includes a control and processing module arranged in the car cabin and multiple loudspeaker modules connected with the control and processing module, wherein the multiple loudspeaker modules are respectively located at different positions in the car cabin, and the control and processing module is used to execute the aforementioned audio playing method provided by the embodiment of the present application. In the embodiment of the present application, the multiple loudspeaker modules can have multiple types, such as a super-bass loudspeaker module, a bass loudspeaker module, and a mid-high loudspeaker module, etc.; a loudspeaker module can include one loudspeaker or multiple loudspeakers, which will be described in the form of including one loudspeaker hereinafter.

[0036] Specifically, the control and processing module includes an operation processing module 27, a storage module 28, an audio bus 26, a digital-to-analog conversion module (not shown in the figure), a power amplification module 30, and a power management module 29. The audio bus 26 is used to transmit the audio signal to be played to the operation processing module 27; the storage module 28 is used to store at least one program, and when the at least one program is executed by the operation processing module 27, the operation processing module 27 executes the aforementioned audio playing method provided by the embodiment of the present application; the digital-to-analog conversion module is used to convert the digital signal output by the operation processing module 27 into an analog signal; the power amplification module 30 is used to perform power amplification on the analog signal output by the digital-to-analog conversion module to transmit to the multiple loudspeakers; and the power management module 29 is used to perform power supply management of the operation processing module 27, the storage module 28, the digital-to-analog conversion module, the power amplification module 30, and the multiple loudspeaker modules.

[0037] Specifically, the power amplification module 30 has multiple input interfaces and multiple output interfaces, one input interface and one output interface constitute a transmission channel, and the number of transmission channels is the same as the number of loudspeakers, and the purpose of such design is to facilitate transmission of each power-amplified sub-source signal to the corresponding loudspeaker for playing.

[0038] To better understand the in-vehicle audio system and its audio playback method provided in the embodiments of this application, the following will use... Figure 3 Taking the 24-channel (meaning including 24 speakers) in-vehicle audio system shown as an example, the in-vehicle audio system and its audio playback method provided in this application embodiment will be described in detail.

[0039] Speaker 1 is located on the center console of the car; speakers 2 and 3 are located on the left and right sides of the center console; speakers 4-11 are located on the right front door, left front door, right rear door, and left rear door; speakers 12-19 are located on the headrests of the driver's seat, front passenger seat, rear right seat, and rear left seat; speakers 20-23 are located on the right front, left front, right rear, and left rear of the headliner; and speaker 24 is located in the trunk. Speakers 5, 9, 7, and 11 are woofers used to reproduce sounds below 180Hz; speaker 24 is a subwoofer used to reproduce sounds below 60Hz; and the remaining speakers are mid-high frequency speakers used to reproduce sounds above 180Hz. Speakers 1-24 are connected to the control and processing module 25 via audio wiring harnesses.

[0040] The control and processing module 25 acquires the original audio signal (i.e., the audio signal to be played) through the audio bus 26. Taking the original audio signal as a two-channel signal as an example, the original audio signal can be represented as L(t) for the left channel and R(t) for the right channel. By decomposing the audio content object (i.e., the sound source signal) of the original audio signal, the left channel as L(t) and the right channel as R(t) can be represented in the following form:

[0041]

[0042]

[0043] in, A represents different categories of audio content objects in the original audio source. L B L C L A R B R C R The numbers represent the number of elements (i.e., sub-sound source signals) contained in different audio content objects. In this embodiment, the original audio signal is decomposed into six different audio content objects, including human voice, wind instrument sounds (bamboo flute, brass, etc.), plucked string instrument sounds (pipa, guitar, etc.), bowed string instrument sounds (erhu, violin, cello, etc.), percussion sounds (drums, cymbals, gongs, etc.), and background sounds (wind, applause, rain, etc.).

[0044]

[0045]

[0046] According to the product design requirements, it is not limited here. For example, the corresponding sub-sound source signal of the pipe sound is the signal of the bamboo flute, brass tube, etc.

[0047] The original audio signal can be written as:

[0048] Among them, indicates the vocal content object separated from the left and right channel original sound sources respectively; indicates the pipe sound content object separated from the left and right channel original sound sources respectively; indicates the plucked sound content object separated from the left and right channel original sound sources respectively; indicates the percussion sound content object separated from the left and right channel original sound sources respectively; indicates the string sound content object separated from the left and right channel original sound sources respectively; indicates the background sound content object separated from the left and right channel original sound sources respectively.

[0049] After the original sound source is decomposed into audio content objects, the content analysis of each audio content object is needed, and different audio content objects are routed to the input ends of different power amplification modules according to certain distribution principles. The processing work in this part is completed in the operation processing module 27. The distribution principle, on the one hand, should basically follow the basic characteristics of the subjective perception of the human ear to the spatial audio multi-direction and multi-angle, and avoid violating the auditory common sense of the human ear to cause bad listening, on the other hand, needs to make a certain degree of adaptive optimization according to the design requirements of product definition.

[0050] For the audio content objects decomposed from the original sound source, the audio content objects with high correlation between the same category elements in the original left and right channel sound sources are analyzed first, for example, the correlation rsq vocal :

[0051]

[0052] Among them, RSQ[] indicates the Pearson product moment correlation coefficient square value calculation between two variables, when rsq≥0.8, it can be considered that the two have high correlation; when rsq<0.8, it can be considered that the two have low correlation. Thus, the audio content object decomposition of the left channel sound source of the original audio signal can be written as follows:

[0053] L(t)=L rsq≥0.8 (t)+L rsq＜0.8 (t)

[0054] L rsq≥0.8 (t) represents the portion of the left channel audio that is highly correlated with the right channel, L rsq＜0.8 (t) represents the portion of the left channel audio that has a low correlation with the right channel, which can be written as:

[0055]

[0056]

[0057] Similarly, the audio content object of the left channel sound source of the original audio signal can be decomposed and written in the following form:

[0058] R(t)=R rsq≥0.8 (t)+R rsq＜0.8 (t)

[0059] in,

[0060]

[0061]

[0062] After analyzing the audio content objects extracted from the original sound source and identifying those with high correlation among elements of the same category in the original left and right channel sound sources, the frequency components of the audio content objects should also be considered to adapt to different bass, midrange, and tweeter speakers. For example, in the percussion category objects of the left channel sound source... The sound contains elements such as drums, cymbals, and gongs of various sizes. Obviously, the frequency of the drums is low, while the frequency of the cymbals is high. These two sound elements should be played back by the bass speaker and the mid-high frequency speaker, respectively.

[0063] Frequency component analysis of audio content objects can be performed as follows, for example, analyzing the components with high correlation between the left and right channels in a percussion category object from the left channel sound source. Perform frequency component analysis:

[0064]

[0065] FFT[] stands for Fast Fourier Transform, a fundamental digital signal processing method that converts time-domain signals into frequency-domain signals. drums Indicates the transformed frequency components, amp drums This represents the transformed amplitude.

[0066] In the embodiments of the present application, all audio content objects are divided into three frequency ranges, i.e., <60Hz, 60Hz-180Hz, and >180Hz. It should be noted that the audio content objects can also be divided into several frequency ranges for processing, or can be designed and changed according to the vehicle-mounted speaker architecture, for example, if the vehicle-mounted speaker architecture includes a separate channel for driving a high-frequency unit with a working frequency band above 2000Hz, the audio content objects should also be divided into a part less than 2000Hz and a part greater than 2000Hz.

[0067] Then can be written as

[0068]

[0069] After completing the content analysis of the audio content objects, the different audio content objects are distributed to the input ends of different power amplification modules by the operation processing module 27, and then:

[0070] The input end of the power amplification module corresponding to the loudspeaker 1:

[0071]

[0072] The input end of the power amplification module corresponding to the loudspeaker 2:

[0073]

[0074] The input end of the power amplification module corresponding to the loudspeaker 3:

[0075]

[0076] The input end of the power amplification module corresponding to the loudspeaker 4:

[0077]

[0078] The input end of the power amplification module corresponding to the loudspeaker 5:

[0079] R(t, f)| f∈[60Hz，180Hz]

[0080] wherein R(t, f)| f∈[60Hz，180Hz] represents all audio content objects of the frequency components between 60Hz-180Hz in the original right channel sound source.

[0081] The input end of the power amplification module corresponding to the loudspeaker 6:

[0082]

[0083] The input end of the power amplification module corresponding to the loudspeaker 7:

[0084] L(t,f)| f∈[60Hz，180Hz]

[0085] L(t,f)| f∈[60Hz，180Hz] represents all the audio content objects in the original left channel sound source with frequency components between 60Hz and 180Hz.

[0086] The input end of the power amplification module corresponding to the loudspeaker 8:

[0087]

[0088] The input end of the power amplification module corresponding to the loudspeaker 9:

[0089] R(t,f)| f∈[60Hz，180Hz]

[0090] R(t,f)| f∈[60Hz，180Hz] represents all the audio content objects in the original right channel sound source with frequency components between 60Hz and 180Hz.

[0091] The input end of the power amplification module corresponding to the loudspeaker 10:

[0092]

[0093] The input end of the power amplification module corresponding to the loudspeaker 11:

[0094] L(t,f)| f∈[60Hz，180Hz]

[0095] L(t,f)| f∈[60Hz，180Hz] represents all the audio content objects in the original left channel sound source with frequency components between 60Hz and 180Hz.

[0096] The input end of the power amplification module corresponding to the loudspeaker 12:

[0097]

[0098] The input end of the power amplification module corresponding to the loudspeaker 13:

[0099]

[0100] The input end of the power amplification module corresponding to the loudspeaker 14:

[0101]

[0102] The input end of the power amplification module corresponding to the loudspeaker 15:

[0103]

[0104] Input end of the power amplification module corresponding to the loudspeaker 16:

[0105]

[0106] Input end of the power amplification module corresponding to the loudspeaker 17:

[0107]

[0108] Input end of the power amplification module corresponding to the loudspeaker 18:

[0109]

[0110] Input end of the power amplification module corresponding to the loudspeaker 19:

[0111]

[0112] Input end of the power amplification module corresponding to the loudspeaker 20:

[0113]

[0114] Input end of the power amplification module corresponding to the loudspeaker 21:

[0115]

[0116] Input end of the power amplification module corresponding to the loudspeaker 22:

[0117]

[0118] Input end of the power amplification module corresponding to the loudspeaker 23:

[0119]

[0120] Input end of the power amplification module corresponding to the loudspeaker 24:

[0121] L(t,f)| f＜60Hz +R(t,f)| f＜60Hz

[0122] wherein L(t,f)| f＜60Hz and R(t,f)| f＜60Hz represent all audio content objects of the frequency components below 60 Hz in the original left and right channel sound sources, respectively.

[0123] After the routing of the audio content objects is completed, some other digital signal processing can also be done in the operation processing module 27, including but not limited to delay adjustment, gain adjustment, phase adjustment, equalization adjustment, etc. After the processing is completed, through digital-to-analog conversion and power amplification, the audio is given to the corresponding speaker channel for sound playback, and this part of work is performed in the power amplification module 30.

[0124] Please refer to Figure 4 , Figure 4 A module block diagram of the computer readable storage medium provided in the embodiment of the present application is shown.

[0125] As Figure 4 shown, the embodiment of the present application further provides a computer readable storage medium 400, and the computer readable storage medium 400 stores executable instructions 410, and the executable instructions 410 are executed to perform the audio playing method provided in the embodiment of the present application.

[0126] The steps of the method or algorithm described in connection with the embodiments disclosed herein can be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module can be located in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0127] In the above embodiments, all or part of the embodiments can be realized by software, hardware, firmware, or any combination thereof. When realized by software, all or part of the embodiments can be realized in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center through a wired (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media sets. The available media can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk), etc.

[0128] It should be noted that each of the embodiments described in the present application are described using a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between embodiments can be understood by referring to each other. For product embodiments, since they are similar to method embodiments, the description is relatively simple, and the relevant parts can be understood by referring to the description of method embodiments.

[0129] It should also be noted that the terms such as first and second, etc. are used in the present application only to distinguish one entity or operation from another, and do not necessarily require or imply any actual such relationship or order between these entities or operations. In addition, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article or device that includes a list of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such a process, method, article or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article or device that includes the element.

[0130] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined in the present application can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown in the present application, but will conform to the widest scope consistent with the principles and novel features disclosed in the present application.

Claims

1. An audio playing method applied to a vehicle-mounted audio system, characterized in that, The vehicle-mounted audio system comprises a plurality of speaker modules arranged at different positions in the vehicle cabin. The audio playing method comprises: obtaining an audio signal to be played; decomposing the audio signal to obtain a plurality of sound source signals of different categories; wherein each sound source signal comprises a plurality of sub-sound source signals of the same category; establishing a route between all the sub-sound source signals and the plurality of speaker modules according to a preset distribution principle; wherein the preset distribution principle indicates a rule that different sub-sound source signals are played through different speaker modules; playing each sub-sound source signal through the corresponding speaker module according to the route. The method for establishing a route between all the sub-sound source signals and the plurality of speaker modules according to a preset distribution principle comprises: obtaining the correlation between the sub-sound source signals of the same category among all the sound channels; obtaining the frequency of all the sub-sound source signals; using the correlation and the frequency as a reference, the method comprises: analyzing the plurality of sub-sound source signals with high correlation between the elements of the same category from the plurality of sound source signals of different categories, and adapting different bass speakers, midrange speakers and treble speakers according to the frequency components of the plurality of sub-sound source signals; and establishing a route between all the sub-sound source signals and the plurality of speaker modules according to a preset distribution principle.

2. The audio play method of claim 1, wherein, The audio signal has at least one sound channel; the method for decomposing the audio signal to obtain a plurality of sound source signals of different categories comprises: decomposing the audio signal to obtain a plurality of sound source signals of different categories under all the sound channels.

3. A car audio system, characterized by comprising: The vehicle-mounted audio system comprises a control and processing module arranged in the vehicle cabin and a plurality of speaker modules connected to the control and processing module, wherein the plurality of speaker modules are arranged at different positions in the vehicle cabin, and the control and processing module is configured to execute the method according to any one of claims 1 to 2.

4. The car audio system of claim 3, wherein, The control and processing module comprises a computing processing module and a storage module, wherein the storage module is configured to store at least one program, and when the at least one program is executed by the computing processing module, the computing processing module executes the method according to any one of claims 1 to 2.

5. The car audio system of claim 4, wherein, The control and processing module further comprises an audio bus configured to transmit an audio signal to be played to the computing processing module.

6. The car audio system of claim 4, wherein, The control and processing module further comprises a digital-to-analog conversion module configured to convert a digital signal output by the computing processing module into an analog signal.

7. The car audio system of claim 6, wherein, The control and processing module further comprises a power amplification module configured to perform power amplification on the analog signal output by the digital-to-analog conversion module to transmit the analog signal to the plurality of speaker modules.

8. The car audio system of claim 7, wherein, The control and processing module further comprises a power management module configured to perform power supply management of the computing processing module, the storage module, the digital-to-analog conversion module, the power amplification module and the plurality of speaker modules.

9. The car audio system of claim 3, wherein, The speaker module comprises one or more speakers.

10. The car audio system of claim 3, wherein, The loudspeaker module includes a subwoofer loudspeaker module, a woofer loudspeaker module, and a mid-high loudspeaker module.

11. A computer readable storage medium, characterized in that, The computer readable storage medium has stored thereon executable instructions that, when executed, perform the method of any one of claims 1 to 2.

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