In-vehicle audio playback method, device, multimedia host, and storage medium

Abstract

A method, device, multimedia host and storage medium for in-vehicle audio playback are disclosed. The method includes the steps of: a multimedia host acquires a first audio signal collected by a mobile microphone through a receiver; when the in-vehicle audio playback device is in an exterior karaoke mode, the multimedia host performs a fusion process on the first audio signal and an accompaniment signal, amplifies the fusion-processed signal through a power amplifier, and then outputs the amplified signal to the exterior speaker to drive the exterior speaker to play the sound.

Description

[Technical Field]

[0001] This application claims priority to Chinese Patent Application No. 202110827109.2, entitled "In-vehicle audio playback method, device, multimedia host and storage medium," filed with the State Intellectual Property Administration of China on July 21, 2021, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to an in-vehicle audio playback method, device, multimedia host and storage medium. [Background technology]

[0003] With the improvement of in-vehicle intelligent terminals, the usage scenarios of automobiles are becoming more and more abundant. In-vehicle multimedia hosts can not only realize functions such as intelligent voice interaction and Bluetooth® calling, but also realize in-vehicle karaoke. Summary of the Invention

[0004] The embodiments of the present application provide an in-vehicle audio playback method, device, multimedia host and storage medium that can meet the usage needs of users in multiple scenes.

[0005] An in-vehicle audio playback method according to a first aspect of an embodiment of the present application is applied to an in-vehicle audio playback device, the in-vehicle audio playback device including a mobile microphone, a receiver, a multimedia host, a power amplifier, and an exterior speaker, and the method includes: The multimedia host acquires, by the receiver, a first audio signal collected by the mobile microphone; When the in-vehicle audio playback device is in an exterior karaoke mode, the multimedia host fuses the first audio signal and the accompaniment signal, amplifies the fuse-processed signal by the power amplifier, and outputs the amplified signal to the exterior speaker to drive the exterior speaker to produce sound.

[0006] In some embodiments, the in-car audio playback device further includes an in-car speaker, and the fused signal is further amplified by the power amplifier and then output to the in-car speaker to drive the in-car speaker to produce sound.

[0007] In some embodiments, the method further includes, when the in-vehicle audio playback device is in an external presentation mode, the multimedia host amplifies the first audio signal using the power amplifier and then outputs it to the external speaker, thereby driving the external speaker to produce sound; or the multimedia host amplifies the first audio signal using the power amplifier and then outputs it to the external speaker and the internal speaker, thereby driving the external speaker and the internal speaker to produce sound.

[0008] In some embodiments, the method further includes the steps of: when the in-car audio playback device is in an in-car karaoke mode, the multimedia host blending the first audio signal and the accompaniment signal, amplifying the blended signal using the power amplifier, and outputting the blended signal to the in-car speaker to drive the in-car speaker to produce sound; and when the in-car audio playback device is in an in-car lecture mode, the multimedia host amplifying the first audio signal using the power amplifier, and outputting the first audio signal to the in-car speaker to drive the in-car speaker to produce sound.

[0009] In some embodiments, the step of the multimedia host fusing the first audio signal and the accompaniment signal includes the step of the multimedia host mixing the first audio signal and the accompaniment signal, or the step of the multimedia host tuning the first audio signal, tuning the accompaniment signal, and mixing the tuned first audio signal and the tuned accompaniment signal.

[0010] In some embodiments, the in-car audio playback device further includes a display, and the multimedia host receives the mode selection command input by the user via the display.

[0011] In some embodiments, the in-car audio playback device further includes an audio microphone, and the method further includes a step of setting one of the audio microphone and the mobile microphone as a primary focus depending on an operating mode of the in-car audio device, allowing audio collected by the microphone set as the primary focus to be pronounced by a speaker, and prohibiting audio collected by a microphone not set as the primary focus to be pronounced by a speaker.

[0012] In some embodiments, the step of setting one of the audio microphone and the mobile microphone as a primary focus according to the operation mode of the in-vehicle audio device includes the steps of: when the in-vehicle audio playback device is in an intelligent audio mode or a Bluetooth mode, the multimedia host sets the audio microphone as a primary focus, the multimedia host processes a second audio signal collected by the audio microphone, and amplifies the processed signal using the power amplifier before outputting it to the in-vehicle speaker to drive the in-vehicle speaker to produce sound; and when the in-vehicle audio playback device is in the exterior karaoke mode, the multimedia host sets the mobile microphone as a primary focus, the multimedia host fuses the first audio signal and the accompaniment signal, and amplifies the fuse-processed signal using the power amplifier before outputting it to the exterior speaker to drive the exterior speaker to produce sound.

[0013] In some embodiments, the priority of the intelligent voice mode is higher than the priority of the outside car karaoke mode, and the priority of the Bluetooth mode is higher than the priority of the outside car karaoke mode, and when at least two modes conflict, the mode with the higher priority is entered first.

[0014] A vehicle-mounted audio playback device according to a second aspect of the present invention includes a mobile microphone, a receiver, a multimedia host, a power amplifier, and an exterior speaker; The multimedia host acquires the first audio signal collected by the mobile microphone using a receiver; The multimedia host further combines the first audio signal and the accompaniment signal when the in-vehicle audio playback device is in an exterior karaoke mode, amplifies the combined signal by the power amplifier, and outputs the amplified signal to the exterior speaker to drive the exterior speaker to produce sound.

[0015] In some embodiments, the in-car audio playback device further includes an in-car speaker, and the fused signal is further amplified by the power amplifier and then output to the in-car speaker to drive the in-car speaker to produce sound.

[0016] In some embodiments, the in-car audio playback device further includes a display, and the multimedia host is further configured to receive a mode selection command input by a user via the display to select the off-car karaoke mode.

[0017] In some embodiments, the in-car audio playback device further includes an audio microphone, and the multimedia host sets the audio microphone as a primary focus when the in-car audio playback device is in an intelligent audio mode or a Bluetooth mode, and when the audio microphone is set as a primary focus, allows the audio collected by the audio microphone to be pronounced by a speaker and prohibits the audio collected by the mobile microphone from being pronounced by the speaker; and when the in-car audio playback device is in the outside-car karaoke mode, the multimedia host sets the mobile microphone as a primary focus, and when the mobile microphone is set as a primary focus, allows the audio collected by the mobile microphone to be pronounced by a speaker and prohibits the audio collected by the audio microphone from being pronounced by the speaker.

[0018] A multimedia host according to a third aspect of an embodiment of the present application includes a receiving unit and a fusion processing unit; The receiving unit acquires a first audio signal collected by a mobile microphone using a receiver; In the exterior karaoke mode, the fusion processing unit fuses the first audio signal and the accompaniment signal, amplifies the fusion-processed signal using a power amplifier, and then outputs the amplified signal to the exterior speaker to drive the exterior speaker to produce sound.

[0019] A multimedia host according to a fourth aspect of the present embodiment includes a processor and a memory, the memory storing a computer program including program instructions, and the processor configured to call the program instructions and execute the step instructions according to the first aspect of the present embodiment.

[0020] A computer-readable storage medium according to a fifth aspect of the present invention stores a computer program for electronic data exchange, the computer program causing a computer to perform some or all of the steps described in the first aspect of the present invention.

[0021] A computer program product according to a sixth aspect of the present application includes a computer program operable to cause a computer to perform some or all of the steps described in the first aspect of the present application, and the computer program product may be a software installation package.

[0022] The details of one or more embodiments of the application are set forth in the drawings and description below. Other features and advantages of the application will be apparent from the description, drawings, and claims. [Brief explanation of the drawings]

[0023] In order to more clearly explain the technical means in the embodiments of the present application or the prior art, the drawings necessary for explaining the embodiments or the prior art will be briefly described below. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

[0024] [Figure 1A] 1 is a schematic diagram illustrating the configuration of an in-vehicle audio playback device according to an embodiment of the present application. [Figure 1B] FIG. 10 is a schematic diagram illustrating the configuration of an in-vehicle audio playback device according to another embodiment of the present invention. [Figure 2] 2 is a flowchart of an in-car audio playback method according to an embodiment of the present application; [Figure 3] 4 is a flowchart of an in-car audio playback method according to another embodiment of the present application. [Figure 4] FIG. 10 is a schematic diagram illustrating the configuration of an in-vehicle audio playback device according to another embodiment of the present invention. [Figure 5] FIG. 10 is a schematic diagram illustrating the configuration of an in-vehicle audio playback device according to another embodiment of the present invention. [Figure 6] 4 is a flowchart of an in-car audio playback method according to another embodiment of the present application. [Figure 7] FIG. 1 is a schematic diagram illustrating a configuration of a multimedia host according to an embodiment of the present application. [Figure 8]FIG. 10 is a schematic diagram of a multimedia host according to another embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0025] Current karaoke systems are only applicable to situations where users sing karaoke in a car, but cannot meet the needs of users in other situations.

[0026] Hereinafter, the technical means in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and are not all of the embodiments, and all other embodiments that can be obtained by those skilled in the art based on the embodiments of the present application without any creative work are all within the scope of protection of the present application.

[0027] The terms "first," "second," etc. in the specification, claims, and drawings of this application are intended to distinguish between different objects and not to describe a particular order. Furthermore, the terms "comprise," "have," and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units shown, and preferably also includes steps or units that are not shown, or preferably also includes steps or units that are inherent to those processes, methods, products, or apparatus.

[0028] Reference to an "embodiment" in this application means that a particular feature, structure, or characteristic described with reference to the embodiment may be included in at least one embodiment of this application. Appearances of the phrase in various places in the specification do not necessarily refer to the same embodiment, nor do they imply an embodiment that is exclusive of other embodiments or an embodiment that is an alternative embodiment. Those skilled in the art can explicitly and implicitly understand that an embodiment described in this application can be combined with other embodiments.

[0029] 1A, which is a schematic diagram of an in-vehicle audio playback device according to an embodiment of the present application, the in-vehicle audio playback device 100 may include a mobile microphone 10, a receiver 20, a multimedia host 30, a power amplifier 40, and an exterior speaker 60.

[0030] The mobile microphone can collect audio signals and then transmit the collected audio signals to a receiver via wireless communication, which can process the audio signals and transmit them to a multimedia host.

[0031] In one embodiment, the mobile microphone 10 and the receiver 20 may be connected by wireless communication, which may include any one of a Bluetooth connection, a WiFi connection, an ultra high frequency (UHF) connection, and a very high frequency (VHF) connection.

[0032] In one embodiment, the mobile microphone 10 and the receiver 20 may be connected by wired communication. The wired communication connection may include a cable connection. Specifically, the cable connection may include a microphone cable connection. The microphone cable may be a coaxial cable.

[0033] For a mobile microphone 10 using a VHF or UHF connection, adjusting the frequency of the mobile microphone 10 to fall within the frequency range that the receiver 20 can receive completes the communication connection between the mobile microphone 10 and the receiver 20, and the mobile microphone 10 can be used as is. For a mobile microphone 10 using a WiFi or Bluetooth connection, turning on the power of the mobile microphone 10 causes the mobile microphone 10 to establish a communication connection with the receiver 20 by performing WiFi pairing or Bluetooth pairing.

[0034] When the mobile microphone 10 and the receiver 20 are connected by wireless communication, the receiver 20 may be a universal serial bus (USB) receiver, and the receiver 20 may be inserted into a USB interface on the multimedia host 30. The receiver 20 may be fixed to the multimedia host 30 and may be a module having the wireless communication function of the multimedia host 30. Specifically, the USB receiver may be a USB dongle receiver.

[0035] When the mobile microphone 10 and the receiver 20 are connected via wired communication, the receiver 20 may be an audio input port fixed to the multimedia host 30, and one end of a cable may be inserted into the audio input port and the other end into the audio output port of the mobile microphone 10.

[0036] The mobile microphone 10 can convert a sound signal from a user into an electrical audio signal. The mobile microphone can integrate a positioning module to realize a positioning function. For example, the mobile microphone can determine whether the mobile microphone is inside or outside the vehicle.

[0037] A software development kit (SDK) is built into the multimedia host 30 to define corresponding full-scene policies. The SDK may include computer program code, which the multimedia host 30 can execute to implement some or all of the steps of the following in-vehicle audio playback method.

[0038] The multimedia host 30 can run a multimedia system, and a third-party karaoke app can run on the multimedia system. A karaoke applet can be installed on the multimedia system, and when a user opens the third-party karaoke app, the karaoke applet automatically pops up, allowing the user to sing karaoke in the car. The karaoke applet acts as a mixing console, allowing the user to adjust the system volume and sound effects of the multimedia system on an in-car display (e.g., a PAD). The karaoke applet installed on the multimedia system can be incorporated by the developer of the multimedia system.

[0039] The multimedia host 30 can acquire the audio signal collected by the mobile microphone 10 using the receiver 20, process the audio signal, amplify the processed signal using the power amplifier 40, and then output it to the exterior speaker 60 to drive the exterior speaker 60 to produce sound.

[0040] The power amplifier 40, abbreviated as amplifier, refers to a basic device in a sound system, and is responsible for amplifying a weak signal from a signal source (audio signal collected by the mobile microphone 10) or a weak signal that has been pre-processed, and driving a speaker to produce sound.

[0041] The multimedia host 30 can be signal connected to the A2B module of the power amplifier 40 via the A2B bus.

[0042] The exterior speaker 60 is a speaker attached to the exterior of a vehicle and is generally used to issue warnings. The exterior speaker 60 according to the embodiment of the present application is not only used for issuing warnings, but also for multiple purposes such as karaoke, lectures, and emceeing.

[0043] Specifically, the exterior speaker 60 may be a speaker in an acoustic vehicle alerting system (AVAS). An exterior AVAS is typically used to issue a warning. For example, if someone bumps into, collides with, or moves the vehicle, a sensor sends a signal to a controller indicating the strength of the vibration. Depending on the strength of the vibration, the controller may issue a warning sound or sound a full-scale alarm to scare off potential thieves and notify the vehicle owner.

[0044] The embodiment of the present application can use the speakers in the exterior AVAS as sound, and realize exterior karaoke using the exterior AVAS, solving the problem of low sound quality and poor user experience when using exterior karaoke.

[0045] Typically, the maximum power of speakers in current exterior AVAS is approximately 5W, with a rated power of 4W, resulting in a certain difference in the karaoke experience from professional sound. To compensate for this power difference, the maximum power of the exterior speaker (speaker in exterior AVAS) in the embodiment of this application can be set to greater than 10W. Frequency response is used in electronics to describe the difference in a device's ability to process signals of different frequencies. Frequency response is a curve that shows the change in gain versus frequency. Every sound device or carrier (an object that records sound signals) has its own frequency response curve. The ideal frequency response curve should be flat, with no distortion occurring after the sound signal passes through. However, the frequency response curve of current exterior AVAS cannot meet the needs of users in multiple scenarios. Therefore, this application uses a high-power exterior AVAS (e.g., an exterior AVAS with a power greater than 10W) ​​and debugs and optimizes parameters such as the frequency response of the exterior AVAS to make its frequency response curve meet the needs of karaoke. For example, after debugging and optimizing the frequency response of the exterior AVAS, the frequency response becomes smoother with frequency changes, with fluctuations smaller than the fluctuation threshold, i.e., no sudden rises or falls occur. In this way, the exterior AVAS of the present application not only provides a low-speed warning sound (a function that emits a certain decibel electronic sound when the vehicle is traveling at a low speed to warn passing vehicles and pedestrians of safety), but also enables functions such as exterior karaoke and music playback by repeatedly using the speaker. The embodiment of the present application fully utilizes the speaker function of the exterior AVAS repeatedly to improve the effect and experience of exterior karaoke for users and meet the usage needs of users in various scenarios.

[0046] FIG. 1B is a schematic diagram of an in-car audio playback device according to an embodiment of the present application. As shown in FIG. 1B, the in-car audio playback device 100 may further include an in-car speaker 50. As its name suggests, the in-car speaker 50 is a speaker installed inside the vehicle, and generally plays broadcasts, music, voice navigation, etc. The in-car speaker 50 may be used for in-car karaoke and in-car lectures.

[0047] As shown in Fig. 2, Fig. 2 is a flowchart of an in-car audio reproducing method according to an embodiment of the present application. The method shown in Fig. 2 can be applied to the in-car audio reproducing device shown in Fig. 1A or Fig. 1B. As shown in Fig. 2, the in-car audio reproducing method may include the following steps 201 to 202.

[0048] In step 201, the multimedia host acquires a first audio signal collected by a mobile microphone using a receiver.

[0049] In the embodiment of the present application, after the receiver and the mobile microphone are successfully paired, the receiver can receive an audio signal from the mobile microphone, and the multimedia host obtains the audio signal from the receiver.

[0050] If the receiver is a general-purpose USB receiver, the receiver can be inserted into a USB interface on the multimedia host, and the mobile microphone can be turned on to pair the receiver with the mobile microphone before performing step 201. At this time, the user can emit a test sound to detect whether the mobile microphone can transmit the collected audio signal to the multimedia host.

[0051] In step 202, if the in-vehicle audio playback device is in an exterior karaoke mode, the multimedia host fuses the first audio signal and the accompaniment signal, amplifies the fused signal by a power amplifier, and then outputs the amplified signal to an exterior speaker to drive the exterior speaker to produce sound.

[0052] In one embodiment, the method shown in Fig. 2 can be applied to the in-car audio playback device shown in Fig. 1B. The fusion-processed signal is further amplified by the power amplifier and then output to the in-car speaker, driving the in-car speaker to produce sound. The fusion-processed signal can be amplified by the power amplifier and then output to the exterior speaker and the interior speaker simultaneously, driving the exterior speaker and the interior speaker simultaneously to produce sound synchronously, further improving the karaoke effect.

[0053] In the present embodiment, the accompaniment signal is, for example, a signal corresponding to musical instruments playing along with singing or a signal corresponding to background music, which can be loaded and obtained by a third-party karaoke app. The karaoke mode is a mode in which a user sings using a karaoke TV. In the outside-car karaoke mode, a user sings karaoke outside or inside the car, and the sound is generated through the outside car speaker, improving the effect and experience of the outside-car karaoke and meeting the user's usage needs in multiple scenarios.

[0054] Specifically, when a user opens a third-party karaoke app, the third-party karaoke app can call the karaoke applet of the multimedia system, and the karaoke applet will automatically pop up. The user can then set the karaoke mode on the display screen of the PAD to "outside car karaoke mode" and select and play a favorite song in the third-party karaoke app to realize karaoke.

[0055] For a particular song, if the third-party karaoke app supports karaoke for that song, the karaoke applet can be used to set the sound effect mode and adjust the reverberation intensity, and the sound effects and mixing adjustments can be made to the user's voice signal collected by the mobile microphone and the accompaniment of that song to achieve a good karaoke effect. If the third-party karaoke app does not support karaoke for that song, the third-party karaoke app will play the song in the same way, but the karaoke applet cannot set the sound effects or adjust the reverberation. The user can still sing using the mobile microphone, but the karaoke effect will be somewhat poor. A mixed karaoke effect would be better, but the exterior car speakers can play the human voice and accompaniment simultaneously.

[0056] The multimedia system can set a whitelist of karaoke software, and after identifying that karaoke software in the whitelist has been launched, the multimedia system can call the karaoke applet and sing karaoke normally.

[0057] In the outside-car karaoke mode, a user can sing karaoke inside the car while holding the mobile microphone in their hand, or outside the car while holding the mobile microphone in their hand. When the user sings karaoke inside the car while holding the mobile microphone in their hand in the outside-car karaoke mode, the multimedia host fuses the first audio signal and the accompaniment signal, and the fused signal is output by a power amplifier to drive the exterior and interior speakers of the car to produce sound. In this case, the exterior and interior speakers can be synchronously output. When the user sings karaoke outside the car while holding the mobile microphone in their hand in the outside-car karaoke mode, the multimedia host fuses the first audio signal and the accompaniment signal, processes the fused signal using a power amplifier, and outputs it to the exterior and interior speakers to drive the exterior and interior speakers to produce sound, or amplifies the fused signal using a power amplifier and outputs it to the exterior speakers to drive the exterior speakers to produce sound.

[0058] In the outside car karaoke mode, the outside car speakers are always used, but the user may decide whether to activate the inside car speakers according to their own preferences. For example, if the user wants the karaoke volume to be as loud as possible, the user can choose to activate the inside car speakers and the outside car speakers simultaneously (e.g., when selecting the outside car karaoke mode, the user can continue to choose whether to activate the inside car speakers and the outside car speakers simultaneously; if so, they will be activated simultaneously; if not, only the outside car speakers will be activated). For example, if the user does not want the karaoke volume to be too loud, the user can choose to activate only the outside car speakers. The outside car karaoke mode can meet the karaoke needs of different users and can meet the usage needs of users in multiple scenarios.

[0059] Preferably, in step 202, the multimedia host performs fusion processing of the first audio signal and the accompaniment signal, specifically, may include the following step (11) or (12).

[0060] In step (11), the multimedia host mixes the first audio signal and the accompaniment signal.

[0061] In step (12), the multimedia host tunes the first audio signal, tunes the accompaniment signal, and mixes the tuned first audio signal and the tuned accompaniment signal.

[0062] In the embodiment of the present application, the mixing process can individually adjust two or more audio signals according to certain frequency, dynamic, sound quality, positioning, reverberation and sound field, and then superimpose each audio signal after optimizing it, so that the mixing process can achieve a clear layered effect and improve the karaoke effect. The tuning process can also be equalizer (EQ) tuning.

[0063] Specifically, EQ tuning can be performed in different positions to achieve the desired sound effect for the in-car karaoke system. The EQ tuning can be different for users sitting in the driver's seat, the passenger seat, and the rear seat. For example, if a user is sitting in the driver's seat, the karaoke effect will be very good, but if the user is sitting in the passenger seat or the rear seat, the effect may be somewhat weaker. In this case, the sound effect after tuning can be achieved not only in the driver's seat but also in the passenger seat and the rear seat. Generally, tuning needs to be performed two, three, or more times to achieve a better sound effect. The tuning can be performed according to the EQ parameters finally adjusted by EQ tuning.

[0064] If the sound effect requirement is not high, tuning may not be necessary, but if the sound effect requirement is high, tuning is necessary. The multimedia host tunes the first audio signal according to pre-adjusted audio tuning parameters, and tunes the accompaniment signal according to pre-adjusted accompaniment tuning parameters. For example, it adjusts the ratio between the microphone volume and the accompaniment music, adjusts the tone of the accompaniment music, etc. The audio tuning parameters and the accompaniment tuning parameters may both be preset. In this way, tuning can be performed directly based on the pre-adjusted parameters, and large delays caused by directly adding sound effects can be avoided, thereby improving the tuning delay when singing karaoke and thereby improving the user's karaoke effect and experience.

[0065] As shown in Fig. 3, Fig. 3 is a flowchart of an in-car audio reproducing method according to another embodiment of the present application. The method shown in Fig. 3 can be applied to the in-car audio reproducing device shown in Fig. 1A or Fig. 1B. As shown in Fig. 3, the in-car audio reproducing method may include the following steps 301 to 305.

[0066] In step 301, the multimedia host acquires the first audio signal collected by the mobile microphone with a receiver.

[0067] In step 302, if the in-vehicle audio playback device is in an exterior karaoke mode, the multimedia host fuses the first audio signal and the accompaniment signal, amplifies the fused signal by a power amplifier, and then outputs the amplified signal to an exterior speaker to drive the exterior speaker to produce sound.

[0068] Preferably, the in-car audio playback device may further include a display (see FIG. 4) and a projector, and in the outside-car karaoke mode, the content displayed on the display can be holographically projected outside the car by the projector. In the outside-car environment, the holographic projection can give the user a better sense of immersion, thereby improving the outside-car karaoke effect and experience.

[0069] For the specific implementation of steps 301 and 302, reference can be made to steps 201 and 202 shown in FIG. 2, and the description thereof will be omitted here.

[0070] In step 303, if the in-vehicle audio playback device is in an external presentation mode, the multimedia host amplifies the first audio signal using a power amplifier and then outputs it to the external speaker, thereby driving the external speaker to produce sound; or the multimedia host amplifies the first audio signal using a power amplifier and then outputs it to both the external speaker and the internal speaker, thereby driving the external speaker and the internal speaker to produce sound.

[0071] In the present embodiment, the lecture mode refers to a mode in which a speaker is required but no accompaniment is required. The user sets the microphone mode on the display screen to “external lecture mode.” In the external lecture mode, the user does not need to open a third-party karaoke app on the multimedia system, and the karaoke applet does not pop up. The multimedia host amplifies the first audio signal through a power amplifier and outputs it to the external speakers, driving the external speakers to play the song; or amplifies the first audio signal through a power amplifier and outputs it to both the external and internal speakers, driving the external and internal speakers to play the song. The present embodiment allows the mobile microphone to be used even when the third-party karaoke app is not open. This allows the mobile microphone to be used in a variety of scenarios, not just in the car when the third-party karaoke app is open, thereby meeting the user's needs in multiple scenarios.

[0072] In the outside presentation mode, the outside speakers are always used, but the user may decide whether to activate the inside speakers according to their own preferences. For example, if the user wants the outside presentation sound to be as loud as possible, the user can choose to activate the inside speakers and the outside speakers simultaneously (e.g., when selecting the outside presentation mode, the user can continue to choose whether to activate the inside speakers and the outside speakers simultaneously; if so, they will be activated simultaneously; if not, only the outside speakers will be activated). For example, if the user does not want the outside presentation sound to be too loud, the user can choose to activate only the outside speakers.

[0073] In the off-vehicle lecture mode, the user can collect audio through the mobile microphone and then output it through the off-vehicle speaker, thereby meeting the user's usage needs in scenes such as off-vehicle lectures, emceeing, and audio sales, thereby satisfying the user's usage needs in multiple scenes.

[0074] In step 304, if the in-car audio playback device is in the in-car karaoke mode, the multimedia host fuses the first audio signal and the accompaniment signal, amplifies the fused signal by a power amplifier, and then outputs the amplified signal to the in-car speaker to drive the in-car speaker to play the sound.

[0075] In the present embodiment, the in-car karaoke mode is one of the selectable karaoke modes, which allows users to sing karaoke in the car through the car speakers, improving the user's in-car karaoke experience and meeting the user's usage needs in multiple scenarios.

[0076] Specifically, when a user opens a third-party karaoke app, the third-party karaoke app can call the karaoke applet of the multimedia system, and the karaoke applet will automatically pop up. The user can then set the karaoke mode on the display screen to "car karaoke mode" and select and play a favorite song in the third-party karaoke app, thereby realizing in-car karaoke.

[0077] For a particular song, if the third-party karaoke app supports karaoke for that song, the user can use the karaoke applet to set the sound effect mode and adjust the reverberation intensity according to their sound preferences, and adjust the sound effects and mixing for the user's voice signal collected by the mobile microphone and the accompaniment of the song to achieve a good karaoke effect. If the third-party karaoke app does not support karaoke for that song, the third-party karaoke app will play the song in the same way, but the karaoke applet will not be able to set the sound effects or adjust the reverberation. The user can still sing using the mobile microphone, but the karaoke effect will be somewhat poor; a mixed karaoke effect would be better, but the car speakers will be able to play the human voice and accompaniment simultaneously.

[0078] The multimedia system can set a whitelist of karaoke software, and after identifying that karaoke software in the whitelist has been launched, the multimedia system can call the karaoke applet and sing karaoke normally.

[0079] In the in-car karaoke mode, a user can sing karaoke in a car by holding a mobile microphone in his / her hand. When the user sings karaoke in a car by holding the mobile microphone in his / her hand, the multimedia host performs a fusion process on the first audio signal and the accompaniment signal, and the fusion-processed signal is outputted by driving the in-car speaker through a power amplifier.

[0080] Preferably, in step 304, the multimedia host performs fusion processing of the first audio signal and the accompaniment signal, specifically, may include the following step (21) or (22).

[0081] In step (21), the multimedia host mixes the first audio signal and the accompaniment signal.

[0082] In step (22), the multimedia host tunes the first audio signal, tunes the accompaniment signal, and mixes the tuned first audio signal and the tuned accompaniment signal.

[0083] For the specific implementation of step (21) and step (22), please refer to step (11) and step (12) above, and the description will be omitted here.

[0084] In step 305, if the in-vehicle audio playback device is in an in-vehicle presentation mode, the multimedia host amplifies the first audio signal through a power amplifier and then outputs it to the in-vehicle speaker to drive the in-vehicle speaker to produce sound.

[0085] In this embodiment, the user sets the microphone mode on the display screen to "in-car lecture mode." In the in-car lecture mode, the user does not need to open a third-party karaoke APP in the multimedia system, and the karaoke applet does not pop up. The multimedia host amplifies the first audio signal through a power amplifier and outputs it to the in-car speaker to drive the in-car speaker to play the sound.

[0086] In the in-car lecture mode, the user can make a sound through the in-car speaker, which satisfies the user's usage needs in scenes such as in-car lectures, emceeing, and voice sales, thereby satisfying the user's usage needs in multiple scenes.

[0087] In the embodiment of the present application, the user can set one of the following modes on the display screen depending on his / her usage needs: "outside-car karaoke mode," "in-car karaoke mode," "outside-car lecture mode," or "in-car lecture mode," thereby meeting the user's usage needs in multiple scenes.

[0088] As shown in Fig. 4, Fig. 4 is a schematic structural diagram of an in-car audio playback device according to another embodiment of the present application. Fig. 4 shows another structure modified based on Fig. 1B. As shown in Fig. 4, the in-car audio playback device may further include a display 70.

[0089] The multimedia host 30 receives a mode selection command input by the user through the display 70 and selects the outside car karaoke mode.

[0090] The display screen of the display 70 may display a mode selection menu. Clicking the mode selection menu enters a mode selection screen. The mode selection screen may display "Outside Car Karaoke Mode," "Inside Car Karaoke Mode," "Outside Car Lecture Mode," and "Outside Car Lecture Mode," allowing the user to select one of these modes. When the user opens a third-party karaoke app, the mode selection screen may display "Outside Car Karaoke Mode" and "Inside Car Karaoke Mode." When the user closes the third-party karaoke app, the mode selection screen may display "Outside Car Karaoke Mode," "Inside Car Karaoke Mode," "Outside Car Lecture Mode," and "Outside Car Lecture Mode."

[0091] As shown in Fig. 5, Fig. 5 is a schematic configuration diagram of an in-vehicle audio reproducing device according to another embodiment of the present application, which is further optimized based on Fig. 4. As shown in Fig. 5, the in-vehicle audio reproducing device 100 may further include an audio microphone 80.

[0092] When the in-vehicle audio playback device is in an intelligent audio mode or a Bluetooth mode, the multimedia host 30 sets the audio microphone 80 as the main focus, and when the audio microphone 80 is set as the main focus, allows the audio collected by the audio microphone 80 to be output by the speaker, and prohibits the audio collected by the mobile microphone 10 from being output by the speaker; The multimedia host 30 sets the mobile microphone 10 as the main focus in the outside-car karaoke mode. When the mobile microphone 10 is set as the main focus, the voice collected by the mobile microphone 10 is permitted to be output by the speaker, and the voice collected by the voice microphone 80 is prohibited from being output by the speaker.

[0093] In the present embodiment, the intelligent voice mode is a mode activated in response to a voice command containing a specific voice. In the intelligent voice mode, a user can intelligently interact with the system by uttering a voice containing a specific voice. The Bluetooth mode is a mode in which a terminal such as a mobile phone makes a call via Bluetooth. The primary focus may be understood as a main point of interest. When the audio microphone 80 is the primary focus, the multimedia system can output the audio collected by the audio microphone 80 through a speaker (at least one of an in-vehicle speaker and an exterior speaker) and prohibit the audio collected by the mobile microphone 10 from being output through the speaker. When the mobile microphone 10 is the primary focus, the multimedia system can output the audio collected by the mobile microphone 10 through a speaker (at least one of an in-vehicle speaker and an exterior speaker) and prohibit the audio collected by the audio microphone 80 from being output through the speaker. In the present embodiment, the audio microphone 80 or the mobile microphone 10 can be set as the primary focus according to different modes, and the audio microphone 80 and the mobile microphone 10 can be prevented from outputting simultaneously, thereby preventing interference between the audio microphone 80 and the mobile microphone 10.

[0094] The in-vehicle audio playback device 100 may include at least one audio microphone 80. If the in-vehicle audio playback device 100 includes two audio microphones, one audio microphone collects a first signal (including the user's sound and surrounding environmental sounds), and the other audio microphone collects a second signal (i.e., surrounding environmental sounds), and the first and second signals are combined to obtain a noise-reduced user sound signal, thereby achieving dual-microphone noise reduction and improving the audio noise reduction effect. The in-vehicle audio playback device 100 may also include at least one mobile microphone 10, and if it includes at least two mobile microphones 10, it can accommodate multiple people singing karaoke at the same time.

[0095] Generally, the audio microphone 80 and the mobile microphone 10 cannot simultaneously drive the speaker to produce sound. In some cases, the audio microphone 80 and the mobile microphone 10 can simultaneously collect sound, and the multimedia system can determine whether to enter the intelligent audio mode or the Bluetooth mode based on the sound collected by the audio microphone 80.

[0096] The intelligent voice mode or Bluetooth mode may be set within the multimedia system or may be automatically triggered. For example, if the audio collected by the audio microphone 80 is recognized as including a specific voice command, the system automatically enters the intelligent voice mode and sets the audio microphone 80 as the primary focus. The specific voice command may be pre-set to include, for example, "Name A," "Name B," "Name C," etc. When the user issues the specific voice command, the system automatically enters the intelligent voice mode, and the audio microphone 80 collects the user's voice and intelligently interacts with the multimedia host 30 through voice (e.g., "Name A, turn on the air conditioner" or "Name A, navigate to XX building").

[0097] For example, when a mobile phone is connected to the multimedia host 30 via Bluetooth, when the mobile phone receives an incoming call, the multimedia host 30 automatically enters Bluetooth mode, and the multimedia host 30 sets the audio microphone 80 as the main focus. At this time, the incoming call information can be displayed on the display corresponding to the multimedia host 30. When the user clicks on the display to answer, a Bluetooth call can be made by the multimedia host 30. The voice spoken by the user will be collected by the audio microphone 80, and the voice of the other party will be played by the car speakers.

[0098] The audio microphone 80 may be connected to the multimedia host 30 by a microphone interface.

[0099] As shown in Fig. 6, Fig. 6 is a flowchart of an in-car audio reproducing method according to another embodiment of the present application. The method shown in Fig. 6 can be applied to the in-car audio reproducing device shown in Fig. 1A. As shown in Fig. 6, the in-car audio reproducing method may include the following steps 601 to 603.

[0100] In step 601, the multimedia host acquires the first audio signal collected by the mobile microphone with a receiver.

[0101] The specific implementation of step 601 can refer to step 201 shown in FIG. 2, and the description will be omitted here.

[0102] In step 602, in the exterior karaoke mode, the multimedia host sets the mobile microphone as the main focus, fuses the first audio signal and the accompaniment signal, and amplifies the fused signal by a power amplifier and outputs it to the exterior speaker to drive the exterior speaker to produce sound, or processes the fused signal by a power amplifier and outputs it to both the exterior speaker and the interior speaker to drive the exterior speaker and the interior speaker to produce sound.

[0103] In the embodiment of the present application, in step 602, in the outside-car karaoke mode, the multimedia host sets the mobile microphone as the main focus, which can be performed before step 601.

[0104] Preferably, the method in FIG. In a car karaoke mode, the multimedia host sets the mobile microphone as the main focus; In an outside-car lecture mode, the multimedia host sets the mobile microphone as the main focus; The method may further include the step of: in a car lecture mode, the multimedia host setting the mobile microphone as the main focus.

[0105] In any of the modes "outside car karaoke mode", "inside car karaoke mode", "outside car lecture mode" and "inside car lecture mode", the multimedia host sets the mobile microphone as the main focus.

[0106] In step 603, in the intelligent audio mode or the Bluetooth mode, the multimedia host sets the audio microphone as the main focus, and the multimedia host processes the second audio signal collected by the audio microphone, and the processed signal is amplified by a power amplifier and then output to the in-car speaker to drive the in-car speaker to play the sound.

[0107] The embodiment of the present application can set the audio microphone or the mobile microphone as the main focus according to different modes, and avoids the audio microphone and the mobile microphone from sounding at the same time, thereby avoiding the audio microphone and the mobile microphone from interfering with each other.

[0108] Preferably, the priority of the intelligent voice mode is higher than the priority of the outside karaoke mode, and the priority of the Bluetooth mode is higher than the priority of the outside karaoke mode.

[0109] In the embodiment of the present application, it is possible to set priorities between different modes, and when two modes conflict, it is possible to select to enter the mode with the higher priority first, thereby improving the user experience.

[0110] The priority of the intelligent voice mode is higher than the priority of any of the "outside-vehicle karaoke mode," "inside-vehicle karaoke mode," "outside-vehicle lecture mode," and "inside-vehicle lecture mode."

[0111] Preferably, the priority of the Bluetooth mode is higher than the priority of the intelligent voice mode.

[0112] In the embodiment of the present application, the priority of the Bluetooth mode can be set higher than the intelligent voice mode, so as to ensure the Bluetooth calling experience and prevent the Bluetooth call from being interrupted by voice recognition.

[0113] The above describes the solution of the embodiments of the present application from the perspective of the execution process of the method. It should be understood that the multimedia host includes corresponding hardware structures and / or software modules for performing each function to realize the above functions. Those skilled in the art can easily recognize that the present application can be realized in the form of hardware or a combination of hardware and computer software by combining the units and algorithm steps of each example described in the embodiments provided herein. Whether a function is implemented in the form of hardware or in the form of computer software driving hardware depends on the specific application and design constraints of the technical means. Those skilled in the art may implement the described functions in different ways for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0114] In the embodiments of the present application, the multimedia host can be divided into functional units according to the above-mentioned method example. For example, each functional unit can be divided by function, or two or more functions can be integrated into one processing unit. The integrated units can be implemented in the form of hardware or software functional units. Note that the division into units in the embodiments of the present application is merely an example and is merely a logical functional division. In actual implementation, other division methods may be used.

[0115] As mentioned above, as shown in FIG. 7, FIG. 7 is a schematic block diagram of a multimedia host according to an embodiment of the present application, where the multimedia host 700 may include: a receiving unit 701 and a fusion processing unit 702 .

[0116] The receiving unit 701 receives the first audio signal collected by the mobile microphone through a receiver.

[0117] The fusion processing unit 702 further performs fusion processing on the first audio signal and the accompaniment signal in the exterior karaoke mode, amplifies the fusion-processed signal by a power amplifier, and then outputs the amplified signal to the exterior speaker to drive the exterior speaker to produce sound.

[0118] Preferably, the fused signal is further amplified by the power amplifier and then output to an in-vehicle speaker, driving the in-vehicle speaker to produce sound.

[0119] Preferably, the multimedia host 700 may further include an amplification processing unit 703 .

[0120] In the external lecture mode, the amplification processing unit 703 amplifies the first audio signal by the power amplifier and then outputs it to the external speaker, driving the external speaker to produce sound, or amplifies the first audio signal by the power amplifier and then outputs it to the external speaker and the internal speaker, driving the external speaker and the internal speaker to produce sound.

[0121] Preferably, the fusion processing unit 702 performs fusion processing on the first audio signal and the accompaniment signal in the in-car karaoke mode, amplifies the fusion-processed signal by the power amplifier, and then outputs the amplified signal to the in-car speaker to drive the in-car speaker to produce sound.

[0122] Furthermore, in the in-car lecture mode, the amplification processing unit 703 amplifies the first audio signal using the power amplifier and then outputs the signal to the in-car speaker, thereby driving the in-car speaker to produce sound.

[0123] Preferably, the step of the fusion processing unit 702 fusion-processing the first audio signal and the accompaniment signal includes: mixing the first audio signal and the accompaniment signal; or The method includes the steps of tuning the first audio signal, tuning the accompaniment signal, and mixing the tuned first audio signal and the tuned accompaniment signal.

[0124] Preferably, the multimedia host 700 may further include a selection unit 704 .

[0125] The selection unit 704 receives a mode selection command input by a user through a display, and selects the outside car karaoke mode.

[0126] Preferably, the multimedia host 700 may further include a setting unit 705 and a signal processing unit 706 .

[0127] The setting unit 705 sets the audio microphone as a main focus in an intelligent audio mode or a Bluetooth mode, and when the audio microphone is set as a main focus, allows the audio collected by the audio microphone to be output by a speaker, and prohibits the audio collected by the mobile microphone from being output by a speaker; the signal processing unit 706 processes the second audio signal collected by the audio microphone, amplifies the processed signal by the power amplifier, and outputs the amplified signal to the in-vehicle speaker to drive the in-vehicle speaker to generate sound; The setting unit 705 further sets the mobile microphone as the main focus in the outside-car karaoke mode, and when the mobile microphone is set as the main focus, allows the sound collected by the mobile microphone to be pronounced by the speaker, and prohibits the sound collected by the audio microphone from being pronounced by the speaker.

[0128] The fusion processing unit 702 further performs fusion processing on the first audio signal and the accompaniment signal, and outputs the fusion-processed signal to the exterior speaker after amplifying it using the power amplifier, thereby driving the exterior speaker to produce sound.

[0129] Preferably, the priority of the intelligent voice mode is higher than the priority of the outside-vehicle karaoke mode, and the priority of the Bluetooth mode is higher than the priority of the outside-vehicle karaoke mode, and when at least two modes conflict, the mode with the higher priority is entered first.

[0130] Preferably, the priority of the Bluetooth mode is higher than the priority of the intelligent voice mode.

[0131] The receiving unit 701 in the embodiment of the present application may be a USB interface in a multimedia host, and the fusion processing unit 702, the amplification processing unit 703, the selection unit 704, the setting unit 705 and the signal processing unit 706 may be processors in the multimedia host.

[0132] In the embodiment of the present application, in the outside car karaoke mode, sounds are generated through the outside car speaker, which can improve the user's outside car karaoke experience and meet the user's usage needs in multiple scenarios.

[0133] FIG. 8 is a schematic diagram of a multimedia host according to another embodiment of the present application. As shown in FIG. 8, the multimedia host 800 includes a processor 801 and a memory 802, which may be connected to each other by a communication bus 803. The communication bus 803 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus 803 may be divided into an address bus, a data bus, a control bus, etc. For convenience of illustration, only one thick line is shown in FIG. 8, but this does not indicate the presence of only one bus or one type of bus. The memory 802 stores a computer program including program instructions, and the processor 801 is configured to call the program instructions to execute some or all of the steps in the methods included in FIGS. 2 to 6.

[0134] The processor 801 may be a general purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits that control the execution of programs of the above means.

[0135] The memory 802 may be, but is not limited to, read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other compact disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disc storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer. The memory may exist independently or be connected to the processor by a bus. The memory may also be integrated integrally with the processor.

[0136] In addition, the multimedia host 800 may further include general-purpose components such as a communication interface (eg, a USB interface, a microphone interface, etc.), an antenna, etc., which will not be described in detail here.

[0137] In the embodiment of the present application, in the outside car karaoke mode, sounds are generated through the outside car speaker, which can improve the user's outside car karaoke experience and meet the user's usage needs in multiple scenarios.

[0138] An embodiment of the present application further provides a computer-readable storage medium storing a computer program for electronic data exchange, the computer program causing a computer to perform some or all of the steps of any of the in-vehicle audio playback methods described in the above method embodiments.

[0139] An embodiment of the present application further provides a computer program product including a non-transitory computer-readable storage medium having a computer program stored thereon, the computer program being operable to cause a computer to perform some or all of the steps of any of the in-car audio playback methods described in the above method embodiments. The computer program product may be a software installation package, and the computer includes a multimedia host.

[0140] Although the above-described embodiments of the methods are expressed as a combination of a series of operations for ease of explanation, those skilled in the art should know that the present application is not limited to the order of operations described, and that some steps may be performed in other orders or simultaneously based on the present application. Next, those skilled in the art should know that the embodiments described in the specification are all preferred embodiments, and that the related operations and modules are not necessarily essential to the present application.

[0141] In the above embodiments, emphasis is placed on the description of each embodiment, and for parts that are not explained in detail in one embodiment, please refer to the description of the relevant parts in other embodiments.

[0142] It should be understood that in some embodiments of the present application, the disclosed device may be realized in other forms. For example, the above-described device embodiments are merely illustrative, and the division of the above units is merely a logical division of functions. In actual implementation, other division schemes may be used. For example, multiple units or components may be combined or integrated into other systems, or some functions may be omitted or not performed. Furthermore, the shown or discussed mutual couplings, direct couplings, or communication connections may be realized using some interfaces, and indirect couplings or communication connections between devices or units may be in electrical or other forms.

[0143] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place or distributed across multiple network units, and some or all of the units can be selected according to actual needs to achieve the objectives of the solution of this embodiment.

[0144] Furthermore, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit. The integrated units may be realized in the form of hardware or in the form of software functional units.

[0145] The integrated unit may be realized in the form of a software program module and stored in a single computer-readable memory when sold or used as an independent product. Based on this understanding, the technical means of the present application, essentially, or a part that contributes to the prior art, or all or a part of the technical means, may be embodied in the form of a software product, and the computer software product is stored in a single memory and includes several instructions that cause a computer device (which may be a personal computer, a server, a network device, etc.) to execute all or a part of the steps of the method described in each embodiment of the present application. The memory includes various media that can store program code, such as a USB memory, a read-only memory (ROM), a random access memory (RAM), a portable hard disk, a magnetic disk, or an optical disk.

[0146] Those skilled in the art can understand that all or part of the steps in the various methods in the above embodiments may be completed by instructing relevant hardware by a program, and the program may be stored in a computer-readable memory, which may include a flash memory, a read-only memory, a random access memory, a magnetic disk, an optical disk, etc.

[0147] The above provides a detailed description of the examples of the present application, and the present specification uses specific examples to explain the principles and embodiments of the present application. However, the above explanation of the examples is merely intended to aid in understanding the method and gist of the present application. Furthermore, a person skilled in the art may modify the specific embodiments and application scope in light of the concept of the present application. In short, the contents of this specification should not be understood as limiting the present application.

Claims

1. An in-vehicle audio playback method applied to an in-vehicle audio playback device, comprising: The in-vehicle audio playback device includes a mobile microphone, a receiver, a multimedia host, a power amplifier, and an exterior speaker; The method comprises: The multimedia host acquires, by the receiver, a first audio signal collected by the mobile microphone; When the in-vehicle audio playback device is in an exterior karaoke mode, the multimedia host performs a fusion process on the first audio signal and the accompaniment signal, amplifies the fusion-processed signal by the power amplifier, and outputs the amplified signal to the exterior speaker to drive the exterior speaker to produce sound; Including, the in-vehicle audio playback device further includes an audio microphone; The method further comprises the step of setting one of the audio microphone and the mobile microphone as a primary focus in response to an audio collected by the audio microphone or an incoming call on a mobile phone connected to the multimedia host via Bluetooth. How to play in-car audio.

2. the in-vehicle audio playback device further includes an in-vehicle speaker; The fused signal is further amplified by the power amplifier and then output to an in-vehicle speaker, thereby driving the in-vehicle speaker to produce sound. The method of claim 1.

3. When the in-vehicle audio playback device is in an external presentation mode, the multimedia host amplifies the first audio signal by the power amplifier and then outputs it to the external speaker, thereby driving the external speaker to produce sound; or the multimedia host amplifies the first audio signal by the power amplifier and then outputs it to the external speaker and the internal speaker, thereby driving the external speaker and the internal speaker to produce sound; Further comprising: The method of claim 2.

4. When the in-vehicle audio playback device is in an in-vehicle karaoke mode, the multimedia host performs a fusion process on the first audio signal and the accompaniment signal, amplifies the fusion-processed signal by the power amplifier, and outputs the amplified signal to the in-vehicle speaker to drive the in-vehicle speaker to produce sound; When the in-vehicle audio playback device is in an in-vehicle presentation mode, the multimedia host amplifies the first audio signal through the power amplifier and then outputs the first audio signal to the in-vehicle speaker to drive the in-vehicle speaker to produce sound; Further comprising: The method of claim 2.

5. The step of the multimedia host fusing and processing the first audio signal and the accompaniment signal includes: the multimedia host mixing the first audio signal and the accompaniment signal; or the multimedia host tuning the first audio signal, tuning the accompaniment signal, and mixing the tuned first audio signal and the tuned accompaniment signal; characterized in that it comprises The method of claim 1.

6. the in-vehicle audio playback device further includes a display; The multimedia host receives a mode selection command input by a user via the display. The method of claim 1.

7. The system includes a mobile microphone, a receiver, a multimedia host, a power amplifier, and an exterior speaker; The multimedia host acquires the first audio signal collected by the mobile microphone using a receiver; The multimedia host further performs a fusion process on the first audio signal and the accompaniment signal when the in-vehicle audio playback device is in an exterior karaoke mode, amplifies the fusion-processed signal by the power amplifier, and outputs the amplified signal to the exterior speaker to drive the exterior speaker to produce sound; the in-vehicle audio playback device further includes an audio microphone; The multimedia host sets one of the audio microphone and the mobile microphone as a main focus in response to the audio collected by the audio microphone or an incoming call on a mobile phone connected to the multimedia host via Bluetooth. In-car audio playback device.

8. the in-vehicle audio playback device further includes an in-vehicle speaker; The fused signal is further amplified by the power amplifier and then output to an in-vehicle speaker, thereby driving the in-vehicle speaker to produce sound.

8. The apparatus of claim 7.

9. the in-vehicle audio playback device further includes a display; The multimedia host further receives a mode selection command input by a user through the display and selects the outside car karaoke mode.

8. The in-vehicle audio playback device according to claim 7.

10. a receiving unit and a fusion processing unit; The receiving unit acquires the first audio signal collected by the mobile microphone using a receiver; the fusion processing unit, in an exterior karaoke mode, fusion-processes the first audio signal and the accompaniment signal, amplifies the fusion-processed signal by a power amplifier, and outputs the amplified signal to an exterior speaker to drive the exterior speaker to produce sound; and setting one of the audio microphone and the mobile microphone as a main focus in response to an audio collected by the audio microphone or an incoming call on a mobile phone connected to the multimedia host via Bluetooth. Multimedia host.

11. a processor and a memory, the memory stores a computer program including program instructions; The processor is configured to call the program instructions to perform the method according to any one of claims 1 to 6. Multimedia host.

12. a computer program including program instructions is stored; The program instructions, when executed by a processor, cause the processor to perform the method according to any one of claims 1 to 6. A computer-readable storage medium.

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