Audio playback apparatus, karaoke system, communication method, vehicle, medium, and program product

Abstract

The invention discloses an audio playing device, a karaoke system, a communication method, a vehicle, a medium and a program product. The audio playing device is detachably connected with the vehicle. The audio playing device comprises a first communication module, and the first communication module is suitable for being connected with the microphone when the audio playing device is in a detached state so as to carry out user sound collection. The audio playing device serves as a detachable part in the vehicle, the audio playing device can synchronously play audio of the vehicle in the detached state, the spatial distance of audio transmission of the vehicle is increased, the audio playing effect of the vehicle is guaranteed, the first communication module in the audio playing device is connected with the microphone, and the audio playing effect of the vehicle is improved. The use scene of the vehicle audio function is enriched, and the use experience of the user on the audio playing device is improved.

Description

Technical Field

[0001] The present application relates to the technical field of playback devices, and in particular to an audio playback device, a karaoke system, a communication method, a vehicle, a medium, and a program product. Background Art

[0002] With the development of smart cockpit technology, the level of automotive intelligence continues to rise. In-car multimedia has enabled functions such as in-car music playback and karaoke. Car use scenarios primarily include daily commuting, camping / outing, and short- and medium-distance self-drive. As more and more car owners enjoy outdoor camping and outings, outdoor camping has become a user scenario that major automakers are focusing on. The demand for outdoor entertainment, such as karaoke and music, is also gaining attention from automakers.

[0003] In some outdoor audio playback scenarios, users play audio in the car by opening the windows or doors to enhance the audio. Due to the poor audio playback effect in the car, the usage scenarios of the vehicle audio function are limited. Summary of the Invention

[0004] An embodiment of the present application provides a vehicle karaoke method, which can enable a microphone to communicate with an audio playback device, thereby improving the user experience of the audio playback device and solving the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned object, according to a first aspect of the present application, an audio playback device is provided;

[0006] The audio playback device is detachably connected to the vehicle;

[0007] The audio playback device includes a first communication module, where the first communication module is adapted to be connected to a microphone when the audio playback device is in a first state, which is a disassembled state.

[0008] Optionally, the first communication module includes a first Bluetooth chip;

[0009] The first Bluetooth chip is configured to connect to the microphone when the audio playback device is in a first state.

[0010] Optionally, the audio playback device includes a first ultra-high frequency communication chip;

[0011] The first ultra-high frequency communication chip is used to receive the human voice signal sent by the microphone.

[0012] Optionally, the audio playback device includes a second communication module;

[0013] The second communication module is used to connect to a vehicle-mounted built-in receiver and / or an external device when the audio playback device is in the first state.

[0014] Optionally, the second communication module includes a second Bluetooth chip,

[0015] The second Bluetooth chip is used to connect to the vehicle-mounted built-in receiver and / or the external device when the audio playback device is in the first state.

[0016] Optionally, the audio playback device includes a second ultra-high frequency communication chip,

[0017] The second UHF communication chip is used to receive the accompaniment audio signal sent by the vehicle-mounted built-in receiver.

[0018] Optionally, the second Bluetooth chip is used to receive the accompaniment audio signal sent by the external device.

[0019] Optionally, the audio playback device includes a signal processor and a power amplifier, wherein:

[0020] The signal processor is used to process the accompaniment audio signal and the vocal signal of the microphone to generate a mixed signal;

[0021] The power amplifier is used to output the mixed sound signal.

[0022] According to a second aspect of the present application, a karaoke system is provided, comprising an audio playback device and a microphone;

[0023] In a first state, the audio playback device is connected to the microphone to receive a human voice signal sent by the microphone. The first state is a disassembled state.

[0024] Optionally, the karaoke system further includes a vehicle-mounted built-in receiver;

[0025] When the audio playback device is in the first state, a first communication connection is established with the third communication module of the vehicle-mounted built-in receiver through the second communication module of the audio playback device.

[0026] Optionally, the vehicle-mounted built-in receiver further includes a third ultra-high frequency communication chip;

[0027] The third ultra-high frequency communication chip is used to send the accompaniment audio signal to the audio playback device.

[0028] Optionally, the karaoke system includes a vehicle-mounted host;

[0029] The vehicle-mounted host is connected to the vehicle-mounted built-in receiver;

[0030] The vehicle-mounted host is used to receive the human voice signal sent by the vehicle-mounted built-in receiver and send the accompaniment audio signal to the vehicle-mounted built-in receiver.

[0031] Optionally, the vehicle-mounted host is connected to the audio playback device when the audio playback device is in the second state;

[0032] The vehicle-mounted host is used to send a mixed signal generated based on the human voice signal and the accompaniment audio signal to the audio playback device; the second state is an assembled state.

[0033] Optionally, the karaoke system further includes a car audio system.

[0034] The vehicle audio system is connected to the vehicle host.

[0035] The vehicle audio system is configured to receive and output a mixed sound signal generated by the vehicle host based on the human voice signal and the accompaniment audio signal.

[0036] Optionally, the karaoke system further includes external equipment.

[0037] When the audio playback device is in the first state, establishing a second communication connection with the external device;

[0038] The external device is used to send an accompaniment audio signal to the audio playback device.

[0039] According to a third aspect of the present application, a communication method is provided. The method is applied to an audio playback device, wherein the audio playback device is detachably connected to a vehicle, and the method comprises:

[0040] When the audio playback device is in a first state, it is connected to a microphone, and the first state is a disassembled state.

[0041] Optionally, the connecting with a microphone includes:

[0042] receiving first pairing information;

[0043] Pairing and connecting with the microphone is performed based on the first pairing information, where the first pairing information is sent by a vehicle-mounted built-in receiver.

[0044] Optionally, the method further includes:

[0045] Pairing with the microphone to generate second pairing information;

[0046] The second pairing information is sent to a vehicle-mounted built-in receiver, so that the vehicle-mounted built-in receiver is paired and connected with the microphone according to the second pairing information.

[0047] Optionally, the method further includes:

[0048] After being connected to the microphone, when detecting that the pairing information of the microphone is updated, the updated pairing information is sent to the vehicle-mounted built-in receiver.

[0049] Optionally, after pairing and connecting with the microphone based on the first pairing information, the method includes:

[0050] When the audio playback device is in the first state, receiving the human voice signal sent by the microphone and receiving the accompaniment audio signal sent by the vehicle-mounted built-in receiver;

[0051] A mixed signal generated based on the vocal signal and the accompaniment audio signal is output.

[0052] Optionally, before receiving the accompaniment audio signal sent by the vehicle-mounted built-in receiver, the method includes:

[0053] Sending a target communication frequency to the vehicle-mounted built-in receiver, so that the vehicle-mounted built-in receiver sends the accompaniment audio signal to the audio playback device based on the target communication frequency;

[0054] The target communication frequency is an unused communication frequency within a preset monitoring distance range.

[0055] Optionally, the method further includes:

[0056] When the audio playback device is in a second state, it is connected to the vehicle-mounted built-in receiver, and the second state is an assembled state;

[0057] The MAC address is sent to the vehicle-mounted built-in receiver.

[0058] Optionally, the method further includes:

[0059] When the audio playback device is in the first state, a communication connection request is sent to the vehicle-mounted built-in receiver, so that the vehicle-mounted built-in receiver establishes a communication connection with the audio playback device based on the MAC address in the communication connection request.

[0060] Optionally, the method further includes:

[0061] When the audio playback device is in a first state, receiving an accompaniment audio signal sent by an external device and receiving a human voice signal sent by the microphone;

[0062] A mixed signal generated based on the vocal signal and the accompaniment audio signal is output.

[0063] According to a fourth aspect of the present application, a communication method is provided, the method being applied to a vehicle-mounted built-in receiver, the method comprising:

[0064] Pairing with a microphone and obtaining first pairing information corresponding to the microphone;

[0065] The first pairing information is sent to an audio playback device, so that the audio playback device is paired and connected with the microphone based on the first pairing information.

[0066] Optionally, the method further includes:

[0067] After being connected to the microphone, when detecting that the pairing information of the microphone is updated, the updated pairing information is sent to the audio playback device.

[0068] Optionally, the method further includes:

[0069] Receive a first MAC address sent by the audio playback device.

[0070] Optionally, the method further includes:

[0071] Receive a communication connection request sent by the audio playback device, and obtain a second MAC address in the communication connection request;

[0072] A communication connection is established with the audio playback device based on the second MAC address.

[0073] Optionally, establishing a communication connection with the audio playback device based on the second MAC address includes:

[0074] If the second MAC address is the same as the first MAC address, a communication connection is established with the audio playback device.

[0075] Optionally, the method further includes:

[0076] Receiving a target communication frequency sent by the audio playback device;

[0077] The accompaniment audio signal is sent to the audio playback device based on the target communication frequency.

[0078] According to the fifth aspect of the present application, an embodiment of the present application further provides a vehicle, which includes the audio playback device and / or the karaoke system.

[0079] According to the sixth aspect of the present application, an embodiment of the present application also provides a computer-readable storage medium, which stores multiple computer programs. The computer programs are suitable for loading by a processor to execute the steps of any vehicle karaoke method provided in the embodiment of the present application.

[0080] According to the seventh aspect of the present application, an embodiment of the present application also provides a computer program product, including a computer program or a computer program, which implements the steps of any vehicle karaoke method provided in the embodiment of the present application when the computer program or the computer program is executed by a processor.

[0081] The present application relates to an audio playback device, a karaoke system, a communication method, a vehicle, a medium and a program product, wherein the audio playback device is detachably connected to the vehicle; the audio playback device includes a first communication module, and the first communication module is suitable for connecting to a microphone when the audio playback device is in a disassembled state to collect user audio; in the present application, the audio playback device serves as a detachable component in the vehicle, and in the disassembled state, the audio playback device can also achieve synchronous playback with the vehicle audio, thereby increasing the spatial distance of the vehicle audio transmission. While ensuring the vehicle audio playback effect, the audio playback device is connected to the microphone through the first communication module in the audio playback device, enriching the usage scenarios of the vehicle audio function and improving the user experience of the audio playback device.

[0082] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0084] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings.

[0085] Figure 1 A schematic structural diagram of an audio playback device provided in an embodiment of the present application;

[0086] Figure 2 A schematic diagram of the structure of an audio playback device provided in an embodiment of the present application;

[0087] Figure 3 A schematic structural diagram of an audio playback device provided in an embodiment of the present application;

[0088] Figure 4 A schematic diagram of the structure of a karaoke system provided in an embodiment of the present application;

[0089] Figure 5 A schematic diagram of the structure of a karaoke system provided in an embodiment of the present application;

[0090] Figure 6This is the first embodiment of the communication method provided by this application;

[0091] Figure 7 This is the second embodiment of the communication method provided by this application;

[0092] Figure 8 This is the third embodiment of the communication method provided by this application;

[0093] Figure 9 This is the fourth embodiment of the communication method provided by this application;

[0094] Figure 10 This is a fifth embodiment of the communication method provided by this application;

[0095] Figure 11 This is the sixth embodiment of the communication method provided by this application;

[0096] Figure 12 This is the seventh embodiment of the communication method provided by this application;

[0097] Figure 13 It is a structural schematic diagram of the vehicle provided in the embodiment of the present application. DETAILED DESCRIPTION

[0098] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0099] Embodiments of the present application provide an audio playback device, a karaoke system, a communication method, a vehicle, a medium, and a program product.

[0100] The audio playback device and vehicle karaoke system provided in the embodiments of this application can be applied to a vehicle, which can be a fuel-powered vehicle, a plug-in hybrid vehicle, or a new energy vehicle, etc., and this disclosure does not specifically limit this. The communication method provided in the embodiments of this application is applied to the audio playback device and the vehicle's built-in receiver.

[0101] The following is a detailed description of each embodiment in conjunction with the accompanying drawings. It should be noted that the order in which the following embodiments are described does not limit the preferred order of the embodiments. Although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in an order different from that shown in the drawings.

[0102] Please refer to Figure 1 , Figure 1 A schematic structural diagram of an audio playback device provided in an embodiment of the present application.

[0103] in:

[0104] The audio playback device is detachably connected to the vehicle;

[0105] The audio playback device includes a first communication module, where the first communication module is adapted to be connected to a microphone when the audio playback device is in a first state, which is a disassembled state.

[0106] Specifically, the vehicle includes an audio playback device, which is detachably connected to the vehicle; when the audio playback device is assembled on the vehicle, the audio playback device is a speaker, serving as one of the sound-emitting units of the entire vehicle, and emits sound normally; when the audio playback device is removed from the vehicle, the audio playback device can be used independently of the vehicle, and the first communication module in the audio playback device can be connected to the microphone in the first state when the audio playback device is removed from the vehicle, and can receive relevant signals sent by the microphone.

[0107] Among them, the audio playback device can be a car audio, a car tablet computer, a car music player, etc.; the first communication module can be a WiFi communication module, a Bluetooth communication module, a Zigbee communication module, a LoRa communication module, etc.

[0108] In the embodiment of the present application, the audio playback device serves as a detachable component in the vehicle. When disassembled, the audio playback device can also play audio synchronously with the vehicle, thereby increasing the spatial distance of vehicle audio transmission. While ensuring the vehicle audio playback effect, the audio playback device is connected to the microphone through the first communication module in the audio playback device, enriching the usage scenarios of the vehicle audio function.

[0109] It can be understood that the audio playback device connects itself to the microphone in the first state through the first communication module therein, avoiding the need for the user to pair the microphone with the built-in receiver in the car every time the user uses the audio playback device. The microphone's vocal data needs to be forwarded by the built-in receiver before reaching the audio playback device, which can improve the user's experience of using the audio playback device.

[0110] In one embodiment, the first communication module includes a first Bluetooth chip; the first Bluetooth chip is used to connect to the microphone when the audio playback device is in the first state.

[0111] Specifically, the first communication module in the audio playback device is a Bluetooth communication module, which includes a first Bluetooth chip. The audio playback device is used to connect to the microphone through the first Bluetooth chip when the audio playback device is in the first state.

[0112] It should be noted that the microphone is also provided with a Bluetooth communication module. The audio playback device is paired with the Bluetooth communication module in the microphone through the first Bluetooth chip in the Bluetooth communication module to achieve the connection between the audio playback device and the microphone.

[0113] It can be understood that the audio playback device is used to connect to the microphone through the first Bluetooth chip when the audio playback device is in the first state. The Bluetooth chip is more suitable for connections between short-range devices, which can make the communication connection more stable, thereby improving the user experience of the audio playback device.

[0114] In one embodiment, the audio playback device includes a first ultra-high frequency communication chip; the first ultra-high frequency communication chip is used to receive the human voice signal sent by the microphone.

[0115] Specifically, after the audio playback device is paired and connected with the microphone, the user can use the microphone to speak, sing karaoke, etc. At this time, the microphone outputs the corresponding human voice signal and sends the human voice signal to the first ultra-high frequency communication chip in the audio playback device. The audio playback device receives the human voice signal sent by the microphone through the first ultra-high frequency communication chip.

[0116] It should be noted that the first UHF communication chip is a chip that communicates using the UHF frequency band, where UHF stands for Ultra High Frequency, or UHF. This frequency band generally refers to radio frequencies between 300 MHz and 3 GHz.

[0117] It is understandable that the audio playback device receives the human voice signal sent by the microphone through the first ultra-high frequency communication chip, which can make the transmission of the human voice signal more stable and safer and reduce the probability of voice crosstalk.

[0118] For further information, please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of an audio playback device provided in an embodiment of the present application.

[0119] The audio playback device includes a second communication module;

[0120] The second communication module is used to connect to a vehicle-mounted built-in receiver and / or an external device when the audio playback device is in the first state.

[0121] Specifically, when the audio playback device is removed from the vehicle, the audio playback device can be used independently of the vehicle, and the second communication module in the audio playback device can communicate with the vehicle's built-in receiver and / or external device in the first state when the audio playback device is removed from the vehicle, and can receive audio signals sent by the vehicle's built-in receiver and / or external device.

[0122] Among them, the second communication module can be a WiFi communication module, a Bluetooth communication module, a Zigbee communication module, a LoRa communication module, etc.

[0123] It can be understood that the audio playback device uses the second communication module therein to connect itself to the vehicle's built-in receiver and / or external device in the first state, and then receives the audio signal sent by the vehicle's built-in receiver and / or external device, which can improve the user's experience of using the audio playback device.

[0124] In one embodiment, the second communication module includes a second Bluetooth chip.

[0125] The second Bluetooth chip is used to connect to the vehicle-mounted built-in receiver and / or the external device when the audio playback device is in the first state.

[0126] Specifically, the second communication module in the audio playback device is a Bluetooth communication module, and the second communication module includes a second Bluetooth chip. The audio playback device is connected to the vehicle-mounted built-in receiver and / or external device through the second Bluetooth chip when the audio playback device is in the first state. The second Bluetooth chip can be a dual-mode Bluetooth chip, and the audio playback device can be connected to the vehicle-mounted built-in receiver and the external device at the same time based on the dual-mode Bluetooth chip. It is understandable that when using the audio playback device, the user usually only uses the dual-mode Bluetooth chip to connect to one of the vehicle-mounted built-in receiver or the external device, so that the audio playback device can receive the accompaniment audio signal sent by the vehicle-mounted built-in receiver or the external device; in particular, the audio playback device can be connected to the vehicle-mounted built-in receiver and the external device at the same time based on the dual-mode Bluetooth chip. At this time, the audio playback device can receive the accompaniment audio signal sent by the vehicle-mounted built-in receiver and the external device, and the user can choose to play the accompaniment audio signal sent by the vehicle-mounted built-in receiver or the accompaniment audio signal sent by the external device on the audio playback device.

[0127] It should be noted that the vehicle's built-in receiver and / or external device is also equipped with a Bluetooth communication module. The audio playback device is paired with the vehicle's built-in receiver and / or external device's Bluetooth communication module through the second Bluetooth chip in the Bluetooth communication module to achieve the connection between the audio playback device and the vehicle's built-in receiver and / or external device.

[0128] It can be understood that the audio playback device uses the second Bluetooth chip to connect to the vehicle's built-in receiver and / or external device when the audio playback device is in the first state. The Bluetooth chip is more suitable for connections between short-range devices, which can make the communication connection more stable, thereby improving the user's experience of the audio playback device.

[0129] In one embodiment, the audio playback device includes a second ultra-high frequency communication chip; the second ultra-high frequency communication chip is used to receive the accompaniment audio signal sent by the vehicle-mounted built-in receiver.

[0130] Specifically, after the audio playback device is paired and connected with the built-in vehicle receiver, the user can use the audio playback device to sing karaoke. At this time, the built-in vehicle receiver outputs the accompaniment audio signal and sends the accompaniment audio signal to the second ultra-high frequency communication chip in the audio playback device. The audio playback device receives the accompaniment audio signal sent by the built-in vehicle receiver through the second ultra-high frequency communication chip.

[0131] It should be noted that the second UHF communication chip communicates using the UHF band. UHF stands for Ultra High Frequency, or UHF. This band generally refers to radio frequencies between 300MHz and 3GHz. The in-vehicle receiver also includes a chip that communicates using the UHF band. The in-vehicle receiver transmits the accompanying audio signal to the second UHF communication chip in the audio playback device based on the UHF band communication.

[0132] It can be understood that the audio playback device receives the accompaniment audio signal sent by the vehicle's built-in receiver through the second ultra-high frequency communication chip. Ultra-high frequency communication can make the transmission of the accompaniment audio signal more stable and safer, and at the same time avoid interference with the accompaniment audio signal by other devices in the vehicle, thereby reducing the probability of sound crosstalk.

[0133] In one embodiment, the second Bluetooth chip is used to receive the accompaniment audio signal sent by the external device.

[0134] Specifically, after the audio playback device is paired and connected with the external device, the user can use the audio playback device to sing karaoke. At this time, the external device outputs the accompaniment audio signal and sends the accompaniment audio signal to the second Bluetooth chip in the audio playback device. The audio playback device receives the accompaniment audio signal sent by the microphone through the second Bluetooth chip.

[0135] It is understandable that when the audio playback device is paired and connected with an external device, the audio playback device is usually far away from the vehicle and is not easily interfered with by other devices in the vehicle to the accompaniment audio signal. Therefore, a second Bluetooth chip is used to receive the accompaniment audio signal sent by the microphone. The Bluetooth chip is more suitable for connections between short-range devices, which can make the communication connection more stable, thereby improving the user experience of the audio playback device.

[0136] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of an audio playback device provided in an embodiment of the present application. The audio playback device includes a signal processor and a power amplifier, wherein:

[0137] The signal processor is used to process the accompaniment audio signal and the vocal signal of the microphone to generate a mixed signal;

[0138] The power amplifier is used to output the mixed sound signal.

[0139] Specifically, when the audio playback device is in the first state, it establishes a connection with the microphone and the vehicle-mounted built-in receiver and / or an external device, and receives the human voice signal sent by the microphone and the accompaniment audio signal sent by the vehicle-mounted built-in receiver and / or the external device. The audio playback device processes the accompaniment audio signal and the human voice signal of the microphone through a signal processor to generate a mixed sound signal, and then outputs the mixed sound signal through a power amplifier.

[0140] It is understandable that the audio playback device processes the accompaniment audio signal and the vocal signal through a signal processor to generate a mixed signal, and then outputs the mixed signal through a power amplifier, which can make the vocal signal and the accompaniment audio signal more closely matched, avoid the vocal signal from being unable to follow the rhythm of the accompaniment audio signal, and improve the user experience of using the audio playback device for karaoke.

[0141] Please refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of a karaoke system provided in an embodiment of the present application.

[0142] The karaoke system includes an audio player and a microphone;

[0143] In a first state, the audio playback device is connected to the microphone to receive a human voice signal sent by the microphone. The first state is a disassembled state.

[0144] Specifically, the vehicle includes an audio playback device, which is detachably connected to the vehicle; when the audio playback device is removed from the vehicle, the audio playback device can be used independently of the vehicle, and the audio playback device can be connected to a microphone to receive human voice signals sent by the microphone.

[0145] The audio playback device may be a car audio system, a car tablet computer, a car music player, etc.

[0146] In the embodiment of the present application, the karaoke system includes an audio playback device and a microphone. The audio playback device is a detachable component in the vehicle. When disassembled, the audio playback device can also play synchronously with the vehicle audio, thereby increasing the spatial distance of the vehicle audio transmission. While ensuring the vehicle audio playback effect, the first communication module in the audio playback device is connected to the microphone to collect human voice audio for karaoke, enriching the usage scenarios of the vehicle audio function.

[0147] It is understandable that the audio playback device is connected to the microphone when it is in the first state, avoiding the need for the user to pair the microphone with the built-in receiver in the car every time the audio playback device is used. The microphone's vocal data needs to be forwarded by the built-in receiver before reaching the audio playback device, which can improve the user's experience of the audio playback device.

[0148] In one embodiment, the karaoke system further includes a vehicle-mounted built-in receiver; when the audio playback device is in the first state, a first communication connection is established with a third communication module of the vehicle-mounted built-in receiver through the second communication module of the audio playback device.

[0149] Specifically, the second communication module and the third communication module can be a WiFi communication module, a Bluetooth communication module, a Zigbee communication module, a LoRa communication module, etc.

[0150] In one embodiment, the second communication module and the third communication module are a second Bluetooth chip. When the audio playback device is in the first state, the audio playback device establishes a first communication connection with the third communication module of the vehicle-mounted built-in receiver through the Bluetooth communication module and the second communication module.

[0151] For example, please refer to Figure 5 , Figure 5 A structural diagram of a karaoke system provided in an embodiment of the present application. In which, the second communication module in the audio playback device includes a dual-mode Bluetooth chip, and the third communication module of the vehicle-mounted built-in receiver includes a Bluetooth BLE chip. When the audio playback device is in the second state, the second state is the state where the audio playback device is assembled on a vehicle, the audio playback device sends its own target MAC address to the vehicle-mounted host, and the vehicle-mounted host forwards the target MAC address to the vehicle-mounted built-in receiver. When the audio playback device is in the first state, the audio playback device sends a communication connection request to the Bluetooth BLE chip in the third communication module of the vehicle-mounted built-in receiver through the dual-mode Bluetooth chip of the second communication module, and the vehicle-mounted built-in receiver obtains the MAC address in the communication connection request. If the MAC address is the same as the target MAC address, a first communication connection is established with the audio playback device. It can be understood that in the embodiment of the present application, the vehicle-mounted host forwards the target MAC address to the vehicle-mounted built-in receiver. When the vehicle-mounted built-in receiver is connected to the audio playback device, it can avoid incorrect connection with other devices by comparing the target MAC address, thereby improving the accuracy of the communication connection.

[0152] For example, the vehicle's built-in receiver is connected to the vehicle's host computer via USB. When the audio playback device is in the second state, after being powered on, the audio playback device establishes a CAN communication connection with the vehicle's host computer, sends its own target MAC address to the vehicle's host computer, and the vehicle's host computer forwards the target MAC address to the vehicle's built-in receiver. When the audio playback device is in the first state, after being powered on, the audio playback device sends a communication connection request to the vehicle's built-in receiver. Upon determining that the MAC address in the communication connection request is the same as the target MAC address, the built-in receiver establishes a first communication connection with the audio playback device.

[0153] It can be understood that the audio playback device establishes a first communication connection with the third communication module of the vehicle-mounted built-in receiver through its second communication module, so that itself is connected to the vehicle-mounted built-in receiver in the first state, thereby facilitating the reception of audio signals sent by the vehicle-mounted built-in receiver, which can improve the user experience of the audio playback device.

[0154] In one embodiment, the vehicle-mounted built-in receiver further includes a third ultra-high frequency communication chip;

[0155] The third ultra-high frequency communication chip is used to send the accompaniment audio signal to the audio playback device.

[0156] Specifically, after the audio playback device establishes a first communication connection with the built-in vehicle receiver, the user can use the audio playback device to sing karaoke. At this time, the built-in vehicle receiver outputs the accompaniment audio signal based on the third ultra-high frequency communication chip, and sends the accompaniment audio signal to the second ultra-high frequency communication chip in the audio playback device. The audio playback device receives the accompaniment audio signal sent by the built-in vehicle receiver through the second ultra-high frequency communication chip.

[0157] It should be noted that the second UHF communication chip and the third UHF communication chip are chips that communicate using the UHF frequency band. UHF stands for Ultra High Frequency, which generally refers to radio frequencies between 300 MHz and 3 GHz.

[0158] For example, please refer to Figure 5 The second UHF communication chip of the audio playback device and the third UHF communication chip of the vehicle-mounted built-in receiver are U-segment transmitting and receiving chips 3. When the vehicle-mounted built-in receiver receives the accompaniment audio signal sent by the vehicle host, the U-segment transmitting and receiving chips 3 in the vehicle-mounted built-in receiver send the accompaniment audio signal to the U-segment transmitting and receiving chips 3 in the audio playback device, so that the audio playback device can receive the accompaniment audio signal.

[0159] Furthermore, before the in-vehicle built-in receiver transmits the accompaniment audio signal to the audio playback device, while the audio playback device is in a first state, a first communication connection is established between the second communication module of the audio playback device and the third communication module of the in-vehicle built-in receiver. The audio playback device monitors the communication frequencies used within a preset distance range, selects any communication frequency other than the used communication frequency within the preset communication frequency range as a target communication frequency, and transmits the target communication frequency to the third communication module of the in-vehicle built-in receiver via the second communication module. The in-vehicle built-in receiver switches its U-segment transmitting / receiving chip 3 to the target operating frequency in response to the target operating frequency. The audio playback device switches its U-segment transmitting / receiving chip 3 to the target operating frequency in response to the target operating frequency. Upon receiving the accompaniment audio signal from the in-vehicle host, the in-vehicle built-in receiver transmits the accompaniment audio signal to the U-segment transmitting / receiving chip 3 of the audio playback device based on the target operating frequency, so that the audio playback device can receive the accompaniment audio signal.

[0160] It can be understood that the audio playback device receives the accompaniment audio signal sent by the vehicle's built-in receiver through the third UHF communication chip through the second UHF communication chip. UHF communication can make the transmission of the accompaniment audio signal more stable and safer, and at the same time avoid interference with the accompaniment audio signal by other devices in the vehicle, reducing the probability of sound crosstalk.

[0161] In one embodiment, the karaoke system includes a vehicle-mounted host; the vehicle-mounted host is connected to the vehicle-mounted built-in receiver; the vehicle-mounted host is used to receive the human voice signal sent by the vehicle-mounted built-in receiver and send the accompaniment audio signal to the vehicle-mounted built-in receiver.

[0162] The karaoke system also includes a car audio system; the car audio system is connected to the car host; the car audio system is used to receive and output a mixed sound signal generated by the car host based on the human voice signal and the accompaniment audio signal.

[0163] Specifically, the vehicle host is connected to the vehicle built-in receiver. When the audio playback device is in the first state, when the user needs to sing karaoke, the microphone is paired and connected to the audio playback device at the same time as the microphone is paired and connected to the vehicle built-in receiver; when the vehicle built-in receiver receives the vocal signal sent by the microphone, the vocal signal is sent to the vehicle host. The vehicle host generates mixed audio based on the vocal signal and the accompaniment audio signal sent by the microphone and sends it to the vehicle audio. The vehicle audio receives and outputs the mixed signal generated by the vehicle host based on the vocal signal and the accompaniment audio signal; at the same time, the vehicle host will send the accompaniment audio signal to the vehicle built-in receiver, and the vehicle built-in receiver will send the accompaniment audio signal to the audio playback device. The audio playback device receives the vocal signal sent by the microphone, generates and outputs the mixed signal generated based on the vocal signal and the accompaniment audio signal.

[0164] For example, please refer to Figure 5 After the vehicle-mounted built-in receiver and the audio playback device in the first state establish a communication connection, the microphone sends a human voice signal, and the vehicle-mounted built-in receiver and the audio playback device receive the human voice signal sent by the microphone through the ultra-high frequency communication chip. Specifically, one microphone is respectively connected to a ultra-high frequency communication chip; for example, the two ultra-high frequency communication chips are respectively: U-band transmitting and receiving chip 1 and U-band transmitting and receiving chip 2; when the user only uses one microphone, the microphone is respectively connected to the vehicle-mounted built-in receiver and the U-band transmitting and receiving chip 1 in the audio playback device, and the microphone sends the human voice signal to the U-band transmitting and receiving chip 1; when the user uses two microphones, one microphone is respectively connected to the vehicle-mounted built-in receiver and the U-band transmitting and receiving chip 1 in the audio playback device, and the other microphone is respectively connected to the vehicle-mounted built-in receiver and the U-band transmitting and receiving chip 2 in the audio playback device, one microphone sends the human voice signal to the vehicle-mounted built-in receiver and the U-band transmitting and receiving chip 1 in the audio playback device, and the other microphone sends the human voice signal to the vehicle-mounted built-in receiver and the U-band transmitting and receiving chip 2 in the audio playback device. The on-board host sends the accompaniment audio signal to the on-board built-in receiver, and the on-board built-in receiver sends the audio signal to the audio playback device at the same time. At the same time, the microphone sends the human voice signal to the on-board built-in receiver and the audio playback device, and the on-board receiver sends the human voice signal to the on-board host. The on-board host mixes the human voice signal and the accompaniment audio signal to obtain a mixed signal, and outputs the mixed signal through the on-board audio. At the same time, the audio playback device mixes the human voice signal and the accompaniment audio signal to obtain a mixed signal and plays the mixed signal, so that the on-board audio in the car and the audio playback device outside the car can play the mixed signal at the same time.

[0165] It can be understood that a communication connection is established between the vehicle-mounted built-in receiver and the audio playback device in the first state, the microphone can directly send the human voice signal directly to the vehicle-mounted built-in receiver and the audio playback device, and the vehicle-mounted built-in receiver simultaneously sends the accompaniment audio signal to the audio playback device, the audio playback device plays the human voice signal and the audio signal by mixing the sound to obtain a mixed signal and plays the mixed signal, the vehicle-mounted host can mix the human voice signal and the audio signal to obtain a mixed signal, and play the mixed signal through the vehicle-mounted audio, so that the vehicle-mounted audio in the car and the audio playback device outside the car can play the mixed signal at the same time, which can improve the user experience of using the K song system.

[0166] In one embodiment, the vehicle-mounted host is connected to the audio playback device when the audio playback device is in a second state; the vehicle-mounted host is used to send a mixed signal generated based on the human voice signal and the accompaniment audio signal to the audio playback device; the second state is an assembly state.

[0167] The karaoke system also includes a car audio system; the car audio system is connected to the car host; the car audio system is used to receive and output a mixed sound signal generated by the car host based on the human voice signal and the accompaniment audio signal.

[0168] Specifically, when the audio playback device is in the second state, the second state is that the audio playback device is installed on a vehicle, the built-in receiver on the vehicle establishes a communication connection with the microphone, receives the human voice signal sent by the microphone, and sends the human voice signal to the vehicle host; the vehicle host generates a mixed sound signal based on the human voice signal and the accompaniment audio signal, and sends the mixed sound signal to the vehicle audio and audio playback device; the vehicle audio receives and plays the mixed sound signal sent by the vehicle host; at the same time, the audio playback device receives and plays the mixed sound signal sent by the vehicle host.

[0169] It should be noted that when the audio playback device is in the second state, the audio playback device will not be connected to the microphone, and the audio playback device only receives and plays the mixed sound signal sent by the vehicle-mounted host.

[0170] It can be understood that when the audio playback device is in the second state, the vehicle host generates a mixed signal based on the human voice signal and the accompaniment audio signal, and sends the mixed signal to the vehicle audio and audio playback device; the vehicle audio receives and plays the mixed signal sent by the vehicle host; at the same time, the audio playback device receives and plays the mixed signal sent by the vehicle host, realizing singing in the car, which can improve the user's experience of using the karaoke system in the car.

[0171] In one embodiment, the karaoke system further includes an external device; when the audio playback device is in the first state, a second communication connection is established with the external device; the external device is used to send an accompaniment audio signal to the audio playback device.

[0172] Specifically, when the audio playback device is in the first state and the user takes the audio playback device away from the vehicle, the audio playback device cannot communicate with the built-in receiver in the vehicle; the audio playback device can establish a second communication connection with an external device, and the external device is a device that does not belong to the vehicle. At this time, the external device can send an accompaniment audio signal to the audio playback device. At the same time, the audio playback device is paired with the microphone, receives the human voice signal sent by the microphone, and then generates and outputs a mixed signal based on the accompaniment audio signal and the human voice signal to realize karaoke outside the car.

[0173] It is understandable that the audio playback device can be connected to an external device separately to realize karaoke outside the car, which can improve the user's experience of using the karaoke system outside the car.

[0174] Please refer to Figure 6 , a first embodiment of the communication method of the present application is proposed, the method is applied to an audio playback device, the audio playback device is detachably connected to a vehicle, and the method includes:

[0175] Step 101: When the audio playback device is in a first state, the audio playback device is connected to a microphone. The first state is a disassembled state.

[0176] In this step, the vehicle includes an audio playback device, and the audio playback device is detachably connected to the vehicle; when the audio playback device is assembled on the vehicle, the audio playback device is a speaker, serving as one of the sound-emitting units of the entire vehicle and emitting sound normally; when the audio playback device is removed from the vehicle, the audio playback device can be used independently of the vehicle, and the audio playback device can be connected to the microphone in the first state of being removed from the vehicle, and can receive relevant signals sent by the microphone.

[0177] Among them, the audio playback device can be a car audio, a car tablet computer, a car music player, etc.; the first communication module can be a WiFi communication module, a Bluetooth communication module, a Zigbee communication module, a LoRa communication module, etc.

[0178] In the embodiment of the present application, the communication method is applied to an audio playback device. The audio playback device is a detachable component in a vehicle. When in a detached state, the audio playback device can also play synchronously with the vehicle audio, thereby increasing the spatial distance of the vehicle audio transmission. While ensuring the vehicle audio playback effect, there is no need to perform pairing operations in the vehicle. When in a detached state, the audio playback device is connected to the microphone through the first communication module to collect human voice audio for karaoke, enriching the usage scenarios of the vehicle audio function.

[0179] Specifically, when the audio playback device is installed in a vehicle, the application scenario when the user needs to sing karaoke is an in-car singing scene; the vehicle-mounted built-in receiver establishes a communication connection with the microphone, receives the human voice signal sent by the microphone, and sends the human voice signal to the vehicle-mounted host; the vehicle-mounted host generates a mixed sound signal based on the human voice signal and the accompaniment audio signal, and sends the mixed sound signal to the vehicle-mounted audio and audio playback device; the vehicle-mounted audio receives and plays the mixed sound signal sent by the vehicle-mounted host; at the same time, the audio playback device receives and plays the mixed sound signal sent by the vehicle-mounted host. Based on this, the audio playback device, the vehicle-mounted host, the vehicle-mounted built-in receiver and the vehicle-mounted audio all serve as in-car singing devices, and users can sing in the car.

[0180] The audio playback device of this embodiment is connected to the microphone when it is in the first state, avoiding the need for the user to pair the microphone with the built-in receiver in the car every time the user uses the audio playback device. The human voice data of the microphone needs to be forwarded by the built-in receiver before reaching the audio playback device, which can improve the user experience of the audio playback device.

[0181] In one embodiment, the connecting with a microphone includes:

[0182] Step 1011, receiving first pairing information;

[0183] Step 1012: Pairing and connecting with the microphone based on the first pairing information, where the first pairing information is sent by a vehicle-mounted built-in receiver.

[0184] In steps 1011 to 1012, the audio playback device receives the first pairing information sent by the vehicle's built-in receiver, and pairs and connects with the microphone based on the first pairing information. It should be noted that the first pairing information of the microphone is stored in the vehicle's built-in receiver in advance. When the audio playback device is in the first state, it first establishes a communication connection with the vehicle's built-in receiver and receives the first pairing information sent by the vehicle's built-in receiver. When the user needs to sing karaoke, the microphone will be turned on. After being turned on, the microphone will send a connection request to the surrounding area. The audio playback device receives the connection request from the microphone within a preset distance range, and then obtains the reference pairing information corresponding to the connection request. The audio playback device compares the reference pairing information with the first pairing information. If the reference pairing information is the same as the first pairing information, it will pair and connect with the microphone.

[0185] The audio playback device of this embodiment receives the first pairing information sent by the built-in receiver in the vehicle, and pairs with the microphone based on the first pairing information, thereby avoiding the need for the user to complete the pairing of the microphone and the built-in receiver in the car every time the user uses the audio playback device, thereby improving the user's experience of using the audio playback device.

[0186] In one embodiment, the method further comprises:

[0187] Step 1013: Pairing with the microphone to generate second pairing information;

[0188] Step 1014: Send the second pairing information to the vehicle-mounted built-in receiver, so that the vehicle-mounted built-in receiver is paired with the microphone according to the second pairing information.

[0189] In steps 1013 to 1014, the audio playback device is paired with the microphone, and second pairing information is generated. The second pairing information is sent to the vehicle-mounted built-in receiver, so that the vehicle-mounted built-in receiver is paired with the microphone according to the second pairing information. It should be noted that when the user needs to sing karaoke, the microphone will be turned on. After being turned on, the microphone will send a connection request to the surrounding area. The user can operate the audio playback device to pair with the microphone. At the same time, the audio playback device is in the first state and establishes a communication connection with the vehicle-mounted built-in receiver. After pairing with the microphone, the second pairing information of the microphone is generated and sent to the vehicle-mounted built-in receiver, so that the vehicle-mounted built-in receiver is paired with the microphone according to the second pairing information. In this way, the user can sing karaoke.

[0190] In this embodiment, the audio playback device is paired with the microphone, second pairing information is generated, and the second pairing information is sent to the in-vehicle built-in receiver, so that the in-vehicle built-in receiver is paired with the microphone according to the second pairing information. This eliminates the need for the user to manually operate the microphone with the audio playback device and the in-vehicle built-in receiver separately, improves the convenience of pairing, and can enhance the user experience of the audio playback device.

[0191] In one embodiment, the method further comprises:

[0192] Step a: After connecting with the microphone, when detecting that the pairing information of the microphone is updated, the updated pairing information is sent to the vehicle-mounted built-in receiver.

[0193] In this step, after the audio playback device is connected to the microphone, upon detecting an update to the microphone's pairing information, it sends the updated pairing information to the vehicle's built-in receiver. It should be noted that the microphone pairing information update can occur when a new microphone is paired with the audio playback device, or when an already connected microphone undergoes a firmware upgrade, without limitation.

[0194] The audio playback device of this embodiment can send the updated pairing information to the vehicle-mounted built-in receiver when detecting that the pairing information of the microphone is updated, so that the pairing information in the audio playback device and the vehicle-mounted built-in receiver can be synchronized, further improving the convenience of pairing and connecting with the microphone, and improving the user experience of the audio playback device.

[0195] Please refer to Figure 7 , a second embodiment of the communication method of the present application is proposed, after pairing and connecting with the microphone based on the first pairing information, the method includes:

[0196] Step 102: When the audio playback device is in the first state, receiving a human voice signal sent by the microphone and receiving an accompaniment audio signal sent by the vehicle-mounted built-in receiver;

[0197] Step 103: output a mixed signal generated based on the human voice signal and the accompaniment audio signal.

[0198] In steps 102 to 103, when the audio playback device is in the first state and after establishing a connection with the microphone and the vehicle-mounted built-in receiver, it receives the human voice signal sent by the microphone and the accompaniment audio signal sent by the vehicle-mounted built-in receiver, generates a mixed signal based on the human voice signal and the accompaniment audio signal, and outputs the mixed signal.

[0199] Specifically, the vehicle host is connected to the vehicle built-in receiver. When the audio playback device is in the first state and the distance between the audio playback device and the vehicle is within a preset distance range, the application scenario when the user needs to sing karaoke is a singing scene inside and outside the car; when the microphone is paired and connected to the audio playback device, the microphone is also paired and connected to the vehicle built-in receiver; the user uses the microphone to sing karaoke, and the microphone sends the human voice signal to the vehicle built-in receiver and the audio playback device at the same time; when the vehicle built-in receiver receives the human voice signal sent by the microphone, it sends the human voice signal to the vehicle host, and the vehicle host generates mixed audio based on the human voice signal and the accompaniment audio signal sent by the microphone and sends it to the vehicle audio, and the vehicle audio receives and outputs the mixed signal generated by the vehicle host based on the human voice signal and the accompaniment audio signal; when the audio playback device receives the human voice signal sent by the microphone, the vehicle host will send the accompaniment audio signal to the vehicle built-in receiver, and the vehicle built-in receiver sends the accompaniment audio signal to the audio playback device, and the audio playback device generates and outputs the mixed signal generated based on the human voice signal and the accompaniment audio signal. Based on this, the audio playback device serves as an outdoor singing device, and the car host, car built-in receiver and car audio serve as indoor singing devices, so that users can sing together inside and outside the car.

[0200] For example, please refer to Figure 5After the vehicle-mounted built-in receiver and the audio playback device in the first state establish a communication connection, the microphone sends a human voice signal, and the vehicle-mounted built-in receiver and the audio playback device receive the human voice signal sent by the microphone through the ultra-high frequency communication chip. Specifically, one microphone is respectively connected to a ultra-high frequency communication chip; for example, the two ultra-high frequency communication chips are respectively: U-band transmitting and receiving chip 1 and U-band transmitting and receiving chip 2; when the user only uses one microphone, the microphone is respectively connected to the vehicle-mounted built-in receiver and the U-band transmitting and receiving chip 1 in the audio playback device, and the microphone sends the human voice signal to the U-band transmitting and receiving chip 1; when the user uses two microphones, one microphone is respectively connected to the vehicle-mounted built-in receiver and the U-band transmitting and receiving chip 1 in the audio playback device, and the other microphone is respectively connected to the vehicle-mounted built-in receiver and the U-band transmitting and receiving chip 2 in the audio playback device, one microphone sends the human voice signal to the vehicle-mounted built-in receiver and the U-band transmitting and receiving chip 1 in the audio playback device, and the other microphone sends the human voice signal to the vehicle-mounted built-in receiver and the U-band transmitting and receiving chip 2 in the audio playback device. The on-board host sends the accompaniment audio signal to the on-board built-in receiver, and the on-board built-in receiver sends the audio signal to the audio playback device at the same time. At the same time, the microphone sends the human voice signal to the on-board built-in receiver and the audio playback device, and the on-board receiver sends the human voice signal to the on-board host. The on-board host mixes the human voice signal and the accompaniment audio signal to obtain a mixed signal, and outputs the mixed signal through the on-board audio. At the same time, the audio playback device mixes the human voice signal and the accompaniment audio signal to obtain a mixed signal and plays the mixed signal, so that the on-board audio in the car and the audio playback device outside the car can play the mixed signal at the same time.

[0201] When the audio playback device of this embodiment is in the first state and after establishing a connection with the microphone and the built-in vehicle receiver, it receives the human voice signal sent by the microphone and the accompaniment audio signal sent by the built-in vehicle receiver, generates a mixed signal based on the human voice signal and the accompaniment audio signal, and outputs the mixed signal, so that the car audio in the car and the audio playback device outside the car can play the mixed signal at the same time. At the same time, the human voice signal sent by the microphone can be directly received by the audio playback device, which can reduce the human voice transmission delay and improve the user's experience of using the audio playback device for karaoke.

[0202] Furthermore, before receiving the accompaniment audio signal sent by the vehicle-mounted built-in receiver, the method further includes:

[0203] Step b: sending a target communication frequency to the vehicle-mounted built-in receiver so that the vehicle-mounted built-in receiver sends the accompaniment audio signal to the audio playback device based on the target communication frequency; wherein the target communication frequency is an unused communication frequency within a preset monitoring distance range.

[0204] In this step, before the audio playback device receives the accompaniment audio signal sent by the vehicle-mounted built-in receiver, it sends a target communication frequency to the vehicle-mounted built-in receiver, so that the vehicle-mounted built-in receiver sends the accompaniment audio signal to the audio playback device based on the target communication frequency; wherein, the target communication frequency is an unused communication frequency within the preset monitoring distance range.

[0205] Specifically, before receiving the accompaniment audio signal sent by the on-board built-in receiver, the audio playback device monitors the reference communication frequency points used within a preset distance range. It is understandable that there are a large number of devices in the vehicle, and there will be communication between devices, and the communication frequency points will be occupied during the communication process. The audio playback device can monitor the reference communication frequency points used within a preset distance range to ensure that subsequent communication with the built-in receiver will not use the communication frequency points that have been used, thereby reducing communication interference. The audio playback device selects any communication frequency point other than the reference communication frequency point within the preset communication frequency point range as the target communication frequency point, and sends the target communication frequency point to the on-board built-in receiver. The on-board built-in receiver forwards the accompaniment audio signal sent by the on-board host to the audio playback device based on the target communication frequency point.

[0206] Before the audio playback device of this embodiment receives the accompaniment audio signal sent by the built-in vehicle receiver, it sends a target communication frequency that is not in use within a preset distance range to the built-in vehicle receiver, so that the built-in vehicle receiver sends the accompaniment audio signal to the audio playback device based on the target communication frequency. This can improve the stability of the accompaniment audio signal sent by the built-in vehicle receiver, avoid the occurrence of crosstalk, and improve the user's experience of singing karaoke using the audio playback device.

[0207] Please refer to Figure 8 , a third embodiment of the communication method of the present application is proposed, the method further comprising:

[0208] Step 104, connecting the audio playback device to the vehicle-mounted built-in receiver when the audio playback device is in a second state, the second state being an assembled state;

[0209] Step 105: Send the MAC address to the vehicle-mounted built-in receiver.

[0210] In steps 104 and 105 , when the audio playback device is in the second state, connected to the vehicle-mounted built-in receiver, the second state being the assembled state; the audio playback device sends a MAC address to the vehicle-mounted built-in receiver.

[0211] Specifically, when the audio playback device is in the second state, the audio playback device is connected to the vehicle host, and the vehicle host is connected to the vehicle built-in receiver. At this time, the audio playback device sends its corresponding MAC address to the vehicle host, and the vehicle host then sends the MAC address of the audio playback device to the vehicle built-in receiver.

[0212] Specifically, the method further includes:

[0213] Step 106 : When the audio playback device is in the first state, send a communication connection request to the vehicle-mounted built-in receiver, so that the vehicle-mounted built-in receiver establishes a communication connection with the audio playback device based on the MAC address in the communication connection request.

[0214] In this step, when the audio playback device is in the first state, when the user needs to sing karaoke, the audio playback device sends a communication connection request to the vehicle-mounted built-in receiver. After receiving the communication connection request, the vehicle-mounted built-in receiver obtains the reference MAC address in the communication connection request, and compares the reference MAC address with the MAC address sent to the vehicle-mounted built-in receiver when the audio playback device is in the second state. When the vehicle-mounted built-in receiver determines that the reference MAC address is the same as the target MAC address, it establishes a communication connection with the audio playback device.

[0215] In this embodiment, the audio playback device sends a MAC address to the in-vehicle built-in receiver when the audio playback device is in the second state. When the audio playback device is in the first state, the in-vehicle built-in receiver quickly establishes a communication connection with the audio playback device based on the MAC address. This improves the convenience of establishing a communication connection between the audio playback device and the in-vehicle built-in receiver, enhancing the user experience of using the audio playback device.

[0216] Please refer to Figure 9 , a fourth embodiment of the communication method of the present application is proposed, the method further comprising:

[0217] Step 107, when the audio playback device is in the first state, receiving the accompaniment audio signal sent by the external device and receiving the human voice signal sent by the microphone;

[0218] Step 108: output a mixed signal generated based on the human voice signal and the accompaniment audio signal.

[0219] In steps 107 to 108, when the audio playback device is in the first state and the user takes the audio playback device away from the vehicle, the distance between the audio playback device and the vehicle is not within the preset distance range, and the audio playback device cannot communicate with the built-in receiver in the vehicle; when the application scenario when the user needs to sing karaoke is a singing scene outside the car, the audio playback device can establish a second communication connection with the external device, and the external device is not a device inside the car. At this time, the external device can send an accompaniment audio signal to the audio playback device, and at the same time the audio playback device is paired with the microphone to receive the human voice signal sent by the microphone, and then generate and output a mixed signal based on the accompaniment audio signal and the human voice signal to realize karaoke outside the car.

[0220] The audio playback device of this embodiment can be connected to an external device separately to realize karaoke outside the car, which can improve the user's experience of using the audio playback device for karaoke outside the car.

[0221] Please refer to Figure 10 , a fifth embodiment of the communication method of the present application is proposed, the method is applied to a vehicle-mounted built-in receiver, the method comprising:

[0222] Step 201: pairing with a microphone and obtaining first pairing information corresponding to the microphone;

[0223] Step 202: Send the first pairing information to an audio playback device, so that the audio playback device is paired with the microphone based on the first pairing information.

[0224] In steps 201 to 202, the vehicle-mounted built-in receiver is paired with the microphone, and the first pairing information corresponding to the microphone is obtained, and the first pairing information is sent to the audio playback device, so that the audio playback device is paired with the microphone based on the first pairing information. It should be noted that the vehicle-mounted built-in receiver is paired with the microphone, and the first pairing information corresponding to the microphone is obtained and stored. When the audio playback device is in the first state, it first establishes a communication connection with the vehicle-mounted built-in receiver and receives the first pairing information sent by the vehicle-mounted built-in receiver. When the user needs to sing karaoke, the microphone is turned on. After being turned on, the microphone sends a connection request to the surrounding area. The audio playback device receives the connection request from the microphone within a preset distance range, and then obtains the reference pairing information corresponding to the connection request. The audio playback device compares the reference pairing information with the first pairing information. If the reference pairing information is the same as the first pairing information, it is paired with the microphone.

[0225] In this embodiment, the vehicle-mounted built-in receiver sends first pairing information to the audio playback device, so that the audio playback device is paired and connected with the microphone based on the first pairing information, avoiding the need for the user to complete pairing of the microphone and the built-in receiver in the car every time the user uses the audio playback device, thereby improving the user's experience of using the audio playback device.

[0226] In one embodiment, the method further comprises:

[0227] Step c: After connecting with the microphone, when detecting that the pairing information of the microphone is updated, sending the updated pairing information to the audio playback device.

[0228] In this step, after the vehicle's built-in receiver is connected to the microphone, upon detecting an update to the microphone's pairing information, it sends the updated pairing information to the audio playback device. It should be noted that the microphone pairing information update can occur when a new microphone is paired with the audio playback device, or when a firmware upgrade is performed on an already connected microphone, without limitation.

[0229] The in-vehicle built-in receiver of this embodiment can send the updated pairing information to the audio playback device when it detects that the pairing information of the microphone is updated, so that the pairing information in the audio playback device and the in-vehicle built-in receiver can be synchronized, further improving the convenience of pairing and connecting with the microphone, and improving the user experience of the audio playback device.

[0230] Please refer to Figure 11 , a sixth embodiment of the communication method of the present application is proposed, the method further comprising:

[0231] Step 203: Receive a first MAC address sent by the audio playback device.

[0232] Step 204: Receive a communication connection request sent by the audio playback device, and obtain a second MAC address in the communication connection request;

[0233] Step 205: Establish a communication connection with the audio playback device based on the second MAC address.

[0234] Specifically, step 205 includes:

[0235] Step 2051: If the second MAC address is the same as the first MAC address, a communication connection is established with the audio playback device.

[0236] In this embodiment, when the audio playback device is in the second state, which is the assembly state, it is connected to the vehicle-mounted built-in receiver; the audio playback device sends its own first MAC address to the vehicle-mounted built-in receiver. The vehicle-mounted built-in receiver receives the first MAC address sent by the audio playback device. When the audio playback device is in the first state, when the user needs to sing karaoke, the audio playback device sends a communication connection request to the vehicle-mounted built-in receiver. After receiving the communication connection request, the vehicle-mounted built-in receiver obtains the second MAC address in the communication connection request, compares the second MAC address with the first MAC address sent to the vehicle-mounted built-in receiver when the audio playback device is in the second state, and establishes a communication connection with the audio playback device when the vehicle-mounted built-in receiver determines that the second MAC address is the same as the first MAC address.

[0237] In this embodiment, the audio playback device sends a MAC address to the in-vehicle built-in receiver when the audio playback device is in the second state. When the audio playback device is in the first state, the in-vehicle built-in receiver quickly establishes a communication connection with the audio playback device based on the MAC address. This improves the convenience of establishing a communication connection between the audio playback device and the in-vehicle built-in receiver, enhancing the user experience of using the audio playback device.

[0238] Please refer to Figure 12 , a seventh embodiment of the communication method of the present application is proposed, the method further comprising:

[0239] Step 206: receiving the target communication frequency sent by the audio playback device;

[0240] Step 207: Send the accompaniment audio signal to the audio playback device based on the target communication frequency.

[0241] In steps 206 to 207, before the audio playback device receives the accompaniment audio signal sent by the vehicle-mounted built-in receiver, the target communication frequency is sent to the vehicle-mounted built-in receiver. The vehicle-mounted built-in receiver receives the target communication frequency sent by the audio playback device, and the vehicle-mounted built-in receiver sends the accompaniment audio signal to the audio playback device based on the target communication frequency; wherein, the target communication frequency is an unused communication frequency within the preset monitoring distance range.

[0242] Specifically, before receiving the accompaniment audio signal sent by the vehicle's built-in receiver, the audio playback device monitors the reference communication frequency points used within a preset distance range. It is understandable that there are a large number of devices in the vehicle, and there will be communication between devices, and the communication frequency points will be occupied during the communication process. The audio playback device can monitor the reference communication frequency points used within a preset distance range to ensure that subsequent communication with the built-in receiver will not use the communication frequency points that have been used, thereby reducing communication interference. The audio playback device selects any communication frequency point other than the reference communication frequency point within the preset communication frequency point range as the target communication frequency point, and sends the target communication frequency point to the vehicle's built-in receiver. The vehicle's built-in receiver forwards the accompaniment audio signal sent by the vehicle host to the audio playback device based on the target communication frequency point.

[0243] In this embodiment, the in-vehicle receiver receives the target communication frequency transmitted by the audio playback device and transmits the accompaniment audio signal to the audio playback device based on the target communication frequency. This improves the stability of the accompaniment audio signal transmitted by the in-vehicle receiver, avoids crosstalk, and enhances the user's karaoke experience using the audio playback device.

[0244] Accordingly, the embodiment of the present application also provides a vehicle, such as Figure 13 As shown, Figure 13A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. The vehicle 1100 includes a processor 1101 having one or more processing cores, a memory 1102 having one or more computer-readable storage media, and a computer program stored in the memory 1102 and executable on the processor. The processor 1101 is electrically connected to the memory 1102. Those skilled in the art will appreciate that the vehicle structure shown in the figure does not limit the vehicle and may include more or fewer components than shown, or combine certain components, or arrange the components differently.

[0245] Processor 1101 is the control center of vehicle 1100. It utilizes various interfaces and communication lines to connect various components of vehicle 1100. By running or loading software programs and / or units stored in memory 1102 and accessing data stored in memory 1102, it executes various functions of vehicle 1100 and processes data, thereby providing overall monitoring of vehicle 1100. Processor 1101 can be a CPU, a graphics processor (GPU), a network processor (NP), etc., and can implement or execute the various methods, steps, and logic blocks disclosed in the embodiments of this application.

[0246] In an embodiment of the present application, the processor 1101 in the vehicle 1100 will load the computer program corresponding to the process of one or more applications into the memory 1102 according to the following steps, and the processor 1101 will run the application stored in the memory 1102 to execute the vehicle karaoke method.

[0247] The specific implementation of the above operations can be found in the previous embodiments and will not be repeated here.

[0248] Optional, such as Figure 13 As shown, the vehicle 1100 further includes: a touch screen 1103, a radio frequency circuit 1104, an audio circuit 1105, an input unit 1106, and a power supply 1107. The processor 1101 is electrically connected to the touch screen 1103, the radio frequency circuit 1104, the audio circuit 1105, the input unit 1106, and the power supply 1107. Those skilled in the art will understand that Figure 13 The vehicle structure shown in the figure does not constitute a limitation to the vehicle, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0249] The touch display screen 1103 can be used to display a graphical user interface and receive operation instructions generated by the user acting on the graphical user interface. The touch display screen 1103 may include a display panel and a touch panel. Among them, the display panel can be used to display information input by the user or information provided to the user and various graphical user interfaces of the vehicle, and these graphical user interfaces can be composed of graphics, text, icons, videos and any combination thereof. Optionally, the display panel can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED, Organic Light-Emitting Diode), etc. The touch panel can be used to collect user touch operations on or near it (such as operations performed by the user using any suitable object or accessory such as a finger, stylus, etc. on or near the touch panel), and generate corresponding operation instructions, and the operation instructions execute corresponding programs. Optionally, the touch panel may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch direction, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into the touch point coordinates, and then sends it to the processor 1101, and can receive the command sent by the processor 1101 and execute it. The touch panel can cover the display panel. When the touch panel detects a touch operation on or near it, it is transmitted to the processor 1101 to determine the type of touch event. Then the processor 1101 provides a corresponding visual output on the display panel according to the type of touch event. In an embodiment of the present application, the touch panel and the display panel can be integrated into the touch display screen 1103 to realize the input and output functions. However, in some embodiments, the touch panel and the touch panel can be used as two independent components to realize the input and output functions. That is, the touch display screen 1103 can also be used as part of the input unit 1106 to realize the input function.

[0250] The RF circuit 1104 may be used to transmit and receive RF signals, thereby establishing wireless communication with network devices or other vehicles through wireless communication, and transmitting and receiving signals with network devices or other vehicles.

[0251] Audio circuit 1105 can be used to provide an audio interface between the user and the vehicle through a speaker and microphone. Audio circuit 1105 can convert received audio data into electrical signals and transmit them to the speaker, which then converts them into sound signals for output. Conversely, the microphone converts collected sound signals into electrical signals, which are then received by audio circuit 1105 and converted into audio data. This audio data is then output to processor 1101 for processing, then sent to another vehicle via RF circuit 1104, or to memory 1102 for further processing. Audio circuit 1105 may also include an earphone jack to allow communication between an external headset and the vehicle.

[0252] The input unit 1106 may be configured to receive input digital, character information, or user feature information (such as fingerprint, iris, or facial information), and to generate keyboard, mouse, joystick, optical, or trackball signal input related to user settings and function control.

[0253] Power supply 1107 is used to power various components of vehicle 1100. Optionally, power supply 1107 can be logically connected to processor 1101 via a power management device, thereby enabling the power management device to manage charging, discharging, and power consumption. Power supply 1107 can also include one or more DC or AC power supplies, recharging devices, power failure detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0254] although Figure 13 Not shown, the vehicle 1100 may also include a camera, a sensor, a wireless fidelity module, a Bluetooth module, etc., which will not be described in detail here.

[0255] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0256] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be accomplished by a computer program, or by controlling related hardware through a computer program. The computer program may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0257] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0258] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0259] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0260] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. Although the descriptions of each embodiment in the embodiments of the present application have different focuses, for parts that are not described in detail in a certain embodiment, please refer to the relevant embodiments of other embodiments. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. An audio playback device, characterized in that: The audio playback device is detachably connected to the vehicle; The audio playback device includes a first communication module, where the first communication module is adapted to be connected to a microphone when the audio playback device is in a first state, which is a disassembled state.

2. The audio playback device according to claim 1, characterized in that The first communication module includes a first Bluetooth chip; The first Bluetooth chip is configured to connect to the microphone when the audio playback device is in a first state.

3. The audio playback device according to claim 1, wherein The audio playback device includes a first ultra-high frequency communication chip; The first ultra-high frequency communication chip is used to receive the human voice signal sent by the microphone.

4. The audio playback device according to claim 1, wherein The audio playback device includes a second communication module; The second communication module is used to connect to a vehicle-mounted built-in receiver and / or an external device when the audio playback device is in the first state.

5. The audio playback device according to claim 4, characterized in that The second communication module includes a second Bluetooth chip, The second Bluetooth chip is used to connect to the vehicle-mounted built-in receiver and / or the external device when the audio playback device is in the first state.

6. The audio playback device according to claim 5, characterized in that The audio playback device includes a second ultra-high frequency communication chip; The second UHF communication chip is used to receive the accompaniment audio signal sent by the vehicle-mounted built-in receiver.

7. The audio playback device according to claim 5, characterized in that The second Bluetooth chip is used to receive the accompaniment audio signal sent by the external device.

8. The audio playback device according to claim 6 or 7, characterized in that: The audio playback device includes a signal processor and a power amplifier, wherein: The signal processor is used to process the accompaniment audio signal and the vocal signal of the microphone to generate a mixed signal; The power amplifier is used to output the mixed sound signal.

9. A karaoke system, characterized in that: The karaoke system comprises the audio playback device and microphone according to claims 1-8; In a first state, the audio playback device is connected to the microphone to receive a human voice signal sent by the microphone. The first state is a disassembled state.

10. The karaoke system according to claim 9, characterized in that: The karaoke system also includes a vehicle-mounted built-in receiver; When the audio playback device is in the first state, a first communication connection is established with the third communication module of the vehicle-mounted built-in receiver through the second communication module of the audio playback device.

11. The karaoke system according to claim 10, characterized in that: The vehicle-mounted built-in receiver also includes a third ultra-high frequency communication chip; The third ultra-high frequency communication chip is used to send the accompaniment audio signal to the audio playback device.

12. The karaoke system according to claim 10, characterized in that: The karaoke system includes a vehicle-mounted host; The vehicle-mounted host is connected to the vehicle-mounted built-in receiver; The vehicle-mounted host is used to receive the human voice signal sent by the vehicle-mounted built-in receiver and send the accompaniment audio signal to the vehicle-mounted built-in receiver.

13. The karaoke system according to claim 12, characterized in that: The vehicle-mounted host is connected to the audio playback device when the audio playback device is in the second state; The vehicle-mounted host is used to send a mixed signal generated based on the human voice signal and the accompaniment audio signal to the audio playback device; the second state is an assembled state.

14. The karaoke system according to claim 12 or 13, characterized in that: The karaoke system also includes a car audio system; The vehicle audio system is connected to the vehicle host; The vehicle audio system is configured to receive and output a mixed sound signal generated by the vehicle host based on the human voice signal and the accompaniment audio signal.

15. The karaoke system according to claim 9, characterized in that: The karaoke system also includes external equipment; When the audio playback device is in the first state, establishing a second communication connection with the external device; The external device is used to send an accompaniment audio signal to the audio playback device.

16. A communication method, characterized in that: The method is applied to an audio playback device, wherein the audio playback device is detachably connected to a vehicle, and the method comprises: When the audio playback device is in a first state, it is connected to a microphone, and the first state is a disassembled state.

17. The method according to claim 16, characterized in that The connection with the microphone comprises: receiving first pairing information; Pairing and connecting with the microphone is performed based on the first pairing information, where the first pairing information is sent by a vehicle-mounted built-in receiver.

18. The method according to claim 16, characterized in that The method further comprises: Pairing with the microphone to generate second pairing information; The second pairing information is sent to a vehicle-mounted built-in receiver, so that the vehicle-mounted built-in receiver is paired and connected with the microphone according to the second pairing information.

19. The method according to any one of claims 16 to 18, characterized in that: The method further comprises: After being connected to the microphone, when detecting that the pairing information of the microphone is updated, the updated pairing information is sent to the vehicle-mounted built-in receiver.

20. The method according to claim 16, wherein After pairing and connecting with the microphone based on the first pairing information, the method includes: When the audio playback device is in the first state, receiving the human voice signal sent by the microphone and receiving the accompaniment audio signal sent by the vehicle-mounted built-in receiver; A mixed signal generated based on the vocal signal and the accompaniment audio signal is output.

21. The method according to claim 20, characterized in that Before receiving the accompaniment audio signal sent by the vehicle-mounted built-in receiver, the method includes: Sending a target communication frequency to the vehicle-mounted built-in receiver, so that the vehicle-mounted built-in receiver sends the accompaniment audio signal to the audio playback device based on the target communication frequency; The target communication frequency is an unused communication frequency within a preset monitoring distance range.

22. The method according to claim 16, wherein The method further comprises: When the audio playback device is in a second state, it is connected to the vehicle-mounted built-in receiver, and the second state is an assembled state; The MAC address is sent to the vehicle-mounted built-in receiver.

23. The method according to claim 22, characterized in that The method further comprises: When the audio playback device is in the first state, a communication connection request is sent to the vehicle-mounted built-in receiver, so that the vehicle-mounted built-in receiver establishes a communication connection with the audio playback device based on the MAC address in the communication connection request.

24. The method according to claim 16, wherein The method further comprises: When the audio playback device is in a first state, receiving an accompaniment audio signal sent by an external device and receiving a human voice signal sent by the microphone; A mixed signal generated based on the vocal signal and the accompaniment audio signal is output.

25. A communication method, characterized in that: The method is applied to a vehicle-mounted built-in receiver, and the method includes: Pairing with a microphone and obtaining first pairing information corresponding to the microphone; The first pairing information is sent to an audio playback device, so that the audio playback device is paired and connected with the microphone based on the first pairing information.

26. The method according to claim 25, characterized in that The method further comprises: After being connected to the microphone, when detecting that the pairing information of the microphone is updated, the updated pairing information is sent to the audio playback device.

27. The method according to claim 25, characterized in that The method further comprises: Receive a first MAC address sent by the audio playback device.

28. The method according to claim 27, characterized in that The method further comprises: Receive a communication connection request sent by the audio playback device, and obtain a second MAC address in the communication connection request; A communication connection is established with the audio playback device based on the second MAC address.

29. The method according to claim 28, characterized in that The establishing a communication connection with the audio playback device based on the second MAC address includes: If the second MAC address is the same as the first MAC address, a communication connection is established with the audio playback device.

30. The method according to claim 25, wherein The method further comprises: Receiving a target communication frequency sent by the audio playback device; The accompaniment audio signal is sent to the audio playback device based on the target communication frequency.

31. A vehicle, characterized in that: It includes the audio playback device as described in claims 1-8 and / or the karaoke system as described in claims 9-15.

32. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a plurality of computer programs, and the computer programs are suitable for being loaded by a processor to execute the steps of the method according to any one of claims 16 to 24 and / or 25 to 30.

33. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the computer program product is caused to perform the steps of the method according to any one of claims 16 to 24 and / or 25 to 30.

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