Vehicle-mounted audio interaction method, vehicle-mounted audio system and vehicle

Abstract

The invention discloses a vehicle-mounted audio interaction method, a vehicle-mounted audio system and a vehicle. The method comprises the following steps: converting audio data input by a user into a first digital audio signal under the condition that a vehicle is detected to be in a B-CALL (vehicle fault call) mode; sending the first digital audio signal to a vehicle-mounted platform, and receiving an analog audio signal fed back by the vehicle-mounted platform for the first digital audio signal; performing analog-to-digital conversion on the analog audio signal to obtain a second digital audio signal; and outputting the second digital audio signal. According to the scheme provided by the invention, the audio quality in the B-CALL mode can be effectively improved, and the listening experience of a user in the B-CALL mode is improved.

Description

Technical Field

[0001] The present application belongs to the field of automobile technology, and in particular relates to an in-vehicle audio interaction method, an in-vehicle audio system, and a vehicle. Background Art

[0002] With the development of intelligent and connected vehicles, audio acquisition devices and audio output devices are integrated into vehicles to realize functions such as voice calls, voice recognition, and emergency calls.

[0003] In the related art, an analog microphone and a common speaker are usually used to implement the emergency call function of a vehicle, for example, the vehicle breakdown call B-CALL.

[0004] However, the analog microphone is subject to environmental interference during audio collection, which reduces the signal quality of the analog audio signal, thereby affecting the user's experience of the B-CALL service. In addition, the audio quality of the audio feedback from the vehicle platform in the B-CALL mode played by ordinary speakers is poor, which also affects the user's experience of the B-CALL service. Summary of the invention

[0005] The embodiments of the present application provide an in-vehicle audio interaction method, an in-vehicle audio system, and a vehicle, which can effectively improve the audio quality in the B-CALL mode and enhance the user's listening experience in the B-CALL mode.

[0006] In a first aspect, an embodiment of the present application provides an interactive method for in-vehicle audio, the method comprising: when it is detected that the vehicle is in a vehicle fault call B-CALL mode, converting the audio data input by the user into a first digital audio signal; sending the first digital audio signal to the in-vehicle platform, and receiving an analog audio signal fed back by the in-vehicle platform for the first digital audio signal; performing analog-to-digital conversion on the analog audio signal to obtain a second digital audio signal; and outputting the second digital audio signal.

[0007] In the second aspect, an embodiment of the present application also provides a vehicle-mounted audio system, which includes: an audio input device, a vehicle-mounted host, an audio output device and a remote communication terminal; the audio input device is used to collect audio data input by a user and convert the audio data into a first digital audio signal; the vehicle-mounted host is connected to the audio input device and is communicatively connected to the vehicle-mounted platform through the remote communication terminal, for receiving the first digital audio signal and transmitting the first digital audio signal to the vehicle-mounted platform; the vehicle-mounted host is also used to receive the analog audio signal fed back by the vehicle-mounted platform for the first digital audio signal, perform analog-to-digital conversion, obtain a second digital audio signal, and send the second digital audio signal to the audio output device to output the second digital audio signal.

[0008] In a third aspect, an embodiment of the present application further provides a vehicle, comprising the in-vehicle audio system as described in the second aspect.

[0009] In the embodiment of the present application, when the vehicle is in the B-CALL mode, the user's digital audio signal is collected. Compared with the collection of analog audio signals in the related art, the use of the user's digital audio signal to achieve audio interaction in the B-CALL mode can make the audio signal have a strong anti-interference ability, improve the quality of the audio signal, and then enable the vehicle-mounted platform to accurately feedback the analog audio signal, thereby improving the user's listening experience. In addition, in the embodiment of the present application, when the vehicle is in the B-CALL mode, the analog audio signal fed back by the vehicle-mounted platform is not directly output, but the analog audio signal is converted from digital to analog and then output to improve the audio output quality in the B-CALL mode and improve the user's experience of the B-CALL service.

[0010] It can be seen that the solution provided in the embodiment of the present application can effectively improve the audio quality in the B-CALL mode and enhance the user's listening experience in the B-CALL mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0012] Figure 1 It is a schematic diagram of the connection relationship between the vehicle audio system and the vehicle platform in the B-CALL mode in the related art;

[0013] Figure 2 It is a flowchart of an interactive method for in-vehicle audio provided by an embodiment of the present application;

[0014] Figure 3 is a structural schematic diagram of a vehicle audio system provided by another embodiment of the present application;

[0015] Figure 4 This is a schematic diagram of the hardware structure of an electronic device in a vehicle audio system provided by another embodiment of the present application. DETAILED DESCRIPTION

[0016] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0017] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0018] For ease of understanding, before explaining the solution provided in the present application, the background of the solution provided in the present application is first explained.

[0019] In order to improve the convenience and comfort of users in driving, currently, vehicles are equipped with in-vehicle audio systems to realize functions such as voice calls, voice recognition, and emergency calls. Based on the frequency of use of vehicle voice scenarios, cost and other factors, in related technologies, digital audio input devices and vehicle audio output devices are usually used to realize functions such as voice calls and voice recognition; while relatively low-priced analog audio input devices and ordinary audio output devices are used to realize B-CALL or emergency call E-CALL.

[0020] As an example, Figure 1 FIG. 1 shows a schematic diagram of the connection relationship between the vehicle audio system and the vehicle platform in the B-CALL mode in the related art, such as Figure 1As shown, in the related art, when the vehicle is in B-CALL mode, the analog audio input device 1 (e.g., analog microphone) in the vehicle audio system is used to collect the audio data input by the user, thereby obtaining an analog audio signal, and then inputting the analog audio signal into the TBOX (Telematics BOX, remote communication terminal) 30, so that the TBOX 30 sends the analog audio signal to the vehicle platform 3, so that the vehicle platform 3 establishes a call connection between the user and the vehicle service center. At the same time, the TBOX 30 can also send the analog audio signal transmitted by the vehicle platform 3 to the ordinary audio output device 2 (e.g., ordinary speaker) for audio playback.

[0021] However, analog audio input devices are susceptible to interference from radio frequency signals and magnetic field signals. The sound quality of analog audio signals collected by analog audio input devices is poor. After being transmitted to the vehicle platform, the vehicle platform may not be able to accurately recognize or receive the user's voice, reducing the B-CALL service experience. In addition, ordinary audio output devices usually have a single frequency band, and the sound quality of their output is poor, which reduces the user's listening experience.

[0022] Based on the problems existing in the existing in-vehicle audio system, the embodiment of the present application provides an in-vehicle audio interaction method, an in-vehicle audio system and a vehicle. In the embodiment of the present application, in the B-CALL mode, the in-vehicle audio system uses a digital audio input device to collect the user's audio data, and outputs the audio transmitted by the in-vehicle platform through the audio output device of the whole vehicle to improve the audio quality and enhance the user's listening experience in the B-CALL mode.

[0023] The following first introduces the in-vehicle audio interaction method provided by the embodiment of the present application. Among them, the in-vehicle audio system can be used as the execution subject of the method provided by the embodiment of the present application.

[0024] Figure 2 FIG. 1 is a flow chart showing a method for interacting with an in-vehicle audio system according to an embodiment of the present application. Figure 2 As shown, the method includes the following steps S201 to S204:

[0025] Step S201 : when it is detected that the vehicle is in a vehicle breakdown call (B-CALL) mode, converting audio data input by the user into a first digital audio signal.

[0026] In step S201, the B-CALL mode is the vehicle emergency help mode. When a vehicle breaks down or has an accident, a help signal can be automatically or manually sent to the emergency rescue service platform. For example, when the vehicle controller in the vehicle detects that the vehicle has an accident or a failure, it controls the vehicle to enter the B-CALL mode; for another example, after the vehicle has an accident or a failure, the user operates the emergency call button in the vehicle to put the vehicle into the B-CALL mode.

[0027] In step S201, the audio data of the user can be collected through the audio input device in the vehicle, and the audio data can be the user's voice. The audio input device is a digital audio input device, which can convert the user's audio data into a digital audio signal, and then transmit and initialize the digital audio signal to reduce the interference of the environment on the audio signal and improve the audio quality.

[0028] Step S202: sending a first digital audio signal to the vehicle-mounted platform, and receiving an analog audio signal fed back by the vehicle-mounted platform in response to the first digital audio signal.

[0029] In step S202, the vehicle-mounted platform may be an emergency rescue service platform. After receiving the emergency call instruction and the first digital audio signal sent by the vehicle, the vehicle-mounted platform may establish a communication connection with the vehicle through TBOX to achieve audio interaction between the vehicle-mounted platform and the vehicle. In the embodiment of the present application, when the vehicle-mounted platform performs audio interaction with the vehicle, the audio signal fed back to the vehicle is an analog audio signal to maintain the accuracy of the audio signal and improve the call quality.

[0030] Step S203: performing analog-to-digital conversion on the analog audio signal to obtain a second digital audio signal.

[0031] The audio signal fed back by the vehicle-mounted platform to the vehicle is an analog audio signal. In order to improve the audio quality of the audio played by the vehicle-mounted audio system, in the embodiment of the present application, the analog audio signal is converted into a digital signal to obtain a second digital audio signal. As an example, in the embodiment of the present application, an analog-to-digital conversion unit is deployed in the vehicle-mounted audio system to realize the conversion of the analog audio signal into a digital audio signal.

[0032] Step S204: output a second digital audio signal.

[0033] In step S204, the audio signal output by the vehicle audio system is a digital audio signal. Compared with analog audio signals, digital audio signals have better sound quality. Therefore, through the method provided in the embodiment of the present application, the vehicle audio system can output an audio signal with better sound quality, thereby improving the user's listening experience.

[0034] In addition, in an embodiment of the present application, an audio output device composed of multiple audio playback units of different frequency bands can also be used to play the second digital audio signal, that is, the second digital audio signal is played on multiple different frequency bands. Compared with an audio output device using a single frequency band, using multiple audio playback units of different frequency bands to play the second digital audio signal can make the played audio more three-dimensional, and can enable users to have a better listening experience during voice calls.

[0035] Based on the scheme defined by the above steps S201 to S204, it can be known that in the embodiment of the present application, when the vehicle is in the B-CALL mode, the user's digital audio signal is collected. Compared with the collection of analog audio signals in the related art, the use of the user's digital audio signal to achieve audio interaction in the B-CALL mode can make the audio signal have a strong anti-interference ability, improve the quality of the audio signal, and then enable the vehicle-mounted platform to accurately feedback the analog audio signal, thereby improving the user's listening experience. In addition, in the embodiment of the present application, when the vehicle is in the B-CALL mode, the analog audio signal fed back by the vehicle-mounted platform is not directly output, but the analog audio signal is converted from digital to analog and then output to improve the audio output quality in the B-CALL mode and improve the user's experience of the B-CALL service.

[0036] It can be seen that the solution provided in the embodiment of the present application can effectively improve the audio quality in the B-CALL mode and enhance the user's listening experience in the B-CALL mode.

[0037] The following is an introduction to the implementation process of the solution provided in the embodiment of the present application.

[0038] It should be noted that the solution provided in the embodiment of the present application is aimed at audio collection and audio playback of the vehicle audio system in B-CALL mode. Before collecting the user's audio data, it is necessary to determine whether the vehicle has entered the B-CALL mode.

[0039] In one embodiment, the vehicle audio system controls the vehicle to enter the B-CALL mode from the voice call mode in response to the B-CALL start instruction.

[0040] In the above embodiment, in the voice call mode, the vehicle audio system can realize ordinary Bluetooth calls (for example, talking with friends) and voice recognition functions (for example, voice-activated navigation), but cannot make voice calls with the vehicle platform.

[0041] As an example, when a vehicle breaks down or has an accident, the vehicle controller generates a B-CALL start command, or the user operates the vehicle's emergency call button to generate a B-CALL start command, establishes a communication connection with the vehicle platform, and sends the B-CALL start command to the vehicle audio system. At this time, the vehicle enters B-CALL mode, and the vehicle audio system can make voice calls with the vehicle platform through TBOX.

[0042] In another embodiment, after the vehicle accident or fault is handled, the vehicle can switch from B-CALL mode to voice call mode. In this scenario, the vehicle audio system responds to the B-CALL stop command and controls the vehicle from B-CALL mode to voice call mode.

[0043] As an example, after a vehicle failure or accident has been handled, or the user cancels an emergency call on the vehicle, the vehicle controller generates a B-CALL stop command. At this time, the vehicle controller controls the communication connection between TBOX and the vehicle platform to be disconnected, and the vehicle enters the voice call mode. In this voice call mode, the user can make voice calls with others through the vehicle audio system, or voice-control the opening or closing of vehicle auxiliary equipment such as the air conditioner, radio, and navigation in the vehicle.

[0044] Furthermore, after detecting that the vehicle enters the B-CALL mode, the audio input device in the vehicle audio system can collect the user's audio data to obtain a first digital audio signal, and then the first digital audio signal can be sent to the vehicle platform.

[0045] In one embodiment, the vehicle audio system decodes the first digital audio signal to obtain a decoded first digital audio signal, and then converts the decoded first digital audio signal into an audio message; and then sends the audio message to the vehicle platform via Ethernet.

[0046] It should be noted that in the embodiment of the present application, the vehicle audio system includes an audio input device, an audio output device, a data transceiver unit, a processing unit, a gateway and a TBOX. In the above embodiment, after the audio input device in the vehicle audio system collects the first digital audio signal, it transmits the first digital audio signal through the data transceiver unit, and transmits it to the processing unit (for example, a system on a chip) in the vehicle audio system, and then the processing unit transmits the first digital audio signal to the TBOX through the network, and then transmits it to the vehicle platform through the TBOX. In the above data transmission process, the data format corresponding to the first digital audio signal is not suitable for network transmission, so it is necessary to decode the first digital audio signal; then, according to the communication protocol between the processing unit and the TBOX, the decoded first digital audio signal is converted into an audio message, and then the audio message is transmitted to the TBOX through the gateway to realize the signal transmission between the vehicle and the vehicle platform.

[0047] Furthermore, after transmitting the first digital audio signal to the vehicle-mounted platform, the service personnel of the vehicle-mounted platform can communicate with the user of the vehicle-mounted terminal through the established communication connection. At this time, the vehicle-mounted platform feeds back an analog audio signal to the vehicle. After receiving the analog audio signal, the vehicle-mounted audio system performs audio encoding processing on the analog audio signal to obtain an encoded analog audio signal; and then performs analog-to-digital conversion on the encoded analog audio signal to obtain a second digital audio signal.

[0048] In the above embodiment, after receiving the analog audio signal fed back by the vehicle-mounted platform, the vehicle-mounted platform performs audio encoding processing on the analog audio signal so that the analog-to-digital conversion unit and the processing unit in the vehicle-mounted audio system can recognize and process the analog audio signal.

[0049] After completing the audio encoding, the analog-to-digital conversion unit in the vehicle audio system can use the existing analog-to-digital conversion algorithm to convert the analog audio signal into a second digital audio signal. For example, the analog-to-digital conversion unit samples the analog audio signal at a preset sampling frequency, and quantizes the sampled audio signal to convert the continuous amplitude obtained by sampling into a discrete amplitude; then the quantized discrete amplitude is coded and modulated (for example, pulse code modulation, differential pulse code modulation), and the quantized discrete amplitude is converted into a binary code to obtain a second digital audio signal.

[0050] After completing the analog-to-digital conversion of the analog audio signal, the car audio system can play it through the audio output device.

[0051] In an embodiment of the present application, a second digital audio signal is output through an audio output device having multiple frequency bands, wherein the audio output device having multiple frequency bands may be a vehicle speaker, which is composed of multiple high, medium and low-frequency speakers. Outputting the digital audio signal through the vehicle speaker can make the output audio more three-dimensional, and can provide the user with a better listening experience during a call.

[0052] In one embodiment, the in-vehicle audio system performs signal amplification processing on the second digital audio signal to obtain an amplified second digital audio signal; then, performs mixing processing on the amplified second digital audio signal on multiple frequency bands to obtain a mixed second digital audio signal; and then, plays the mixed second digital audio signal through an audio output device.

[0053] In the above embodiment, the power amplification of the second digital audio signal can reduce the influence of signal noise on the digital audio signal and improve the audio playback quality. In addition, in the embodiment of the present application, the audio output device is not an audio output device with a single frequency band, but a whole vehicle audio output device composed of multiple audio output units with different frequency bands. The whole vehicle audio output device can effectively improve the voice call quality in the B-CALL mode, so that users have a better listening experience.

[0054] It should be noted that after the analog audio signal is converted into a second digital audio signal through analog-to-digital conversion, the second digital audio signal needs to be transmitted from the analog-to-digital conversion unit to the audio output unit. During the signal transmission process, the data transmission between different devices in the vehicle audio system is realized through the data transceiver unit. Among them, the data transceiver unit cannot directly transmit the digital audio signal, and signal encoding is required before this.

[0055] In one embodiment, before outputting the second digital audio signal through an audio output device having multiple frequency bands, a processing unit in the vehicle audio system performs Manchester encoding on the second digital audio signal to obtain an encoded second digital audio signal; then, the encoded second digital audio signal is transmitted to the audio output device through time division multiplexing technology, so that the audio output device can play the second digital audio signal.

[0056] This concludes the introduction to the method provided in the embodiments of the present application.

[0057] The following is an introduction to the in-vehicle audio system provided in the embodiments of the present application.

[0058] Figure 3 FIG. 1 shows a schematic diagram of the structure of a vehicle audio system provided by an embodiment of the present application. Figure 3As shown, the vehicle audio system includes: a vehicle host 10 , an audio output device 20 , a remote communication terminal 30 and an audio input device 50 .

[0059] In one embodiment, the audio input device 50 is used to collect audio data input by a user and convert the audio data into a first digital audio signal.

[0060] As an example, the audio input device 50 includes a first data transceiver unit 501 and a digital microphone 502, wherein the first data transceiver unit 501 may be an A2B transceiver. Figure 1 As shown, the digital microphone 502 transmits the collected first digital audio signal to the vehicle-mounted host 10 through the first data transceiver unit 501 for signal processing.

[0061] In one embodiment, the vehicle host 10 is connected to the audio input device 50 for receiving a first digital audio signal and transmitting the first digital audio signal to the vehicle platform; wherein the vehicle host 10 can be connected to the vehicle platform through the remote communication terminal 30 for communication.

[0062] In the embodiment of the present application, the vehicle host 10 may be an entertainment host in the vehicle cabin, for example, an IDCU (Integrated Display Computer Unit). The vehicle platform may be an emergency rescue service platform for the vehicle, which may provide vehicle rescue services to users through remote communication.

[0063] In an embodiment of the present application, the vehicle-mounted host 10 can also receive the analog audio signal fed back by the vehicle-mounted platform for the first digital audio signal, perform analog-to-digital conversion, obtain a second digital audio signal, and send the second digital audio signal to the audio output device 20 to output the second digital audio signal.

[0064] It should be noted that the audio signal fed back by the vehicle-mounted platform to the vehicle is an analog audio signal. In order to improve the audio quality of the audio played by the vehicle-mounted audio system, in the embodiment of the present application, the analog audio signal is converted into a digital signal to obtain a second digital audio signal. As an example, in the embodiment of the present application, an analog-to-digital conversion unit is deployed in the vehicle-mounted audio system to convert the analog audio signal into a digital audio signal.

[0065] It can be seen from the above content that in the embodiment of the present application, when the vehicle is in the B-CALL mode, the user's digital audio signal is collected. Compared with the collection of analog audio signals in the related art, the use of the user's digital audio signal to achieve audio interaction in the B-CALL mode can make the audio signal have a strong anti-interference ability, improve the quality of the audio signal, and then enable the vehicle-mounted platform to accurately feedback the analog audio signal, thereby improving the user's listening experience. In addition, in the embodiment of the present application, when the vehicle is in the B-CALL mode, the analog audio signal fed back by the vehicle-mounted platform is not directly output, but the analog audio signal is converted from digital to analog and then output to improve the audio output quality in the B-CALL mode and improve the user's experience of the B-CALL service.

[0066] In one embodiment, Figure 3 As shown, the audio output device 20 includes: multiple audio output units 204 with different frequency bands and a mixing unit 205, wherein the multiple audio output units 204 are connected in parallel and perform signal processing on the second digital audio signal at the corresponding frequency band respectively; the mixing unit 205 performs mixing processing on the second digital audio signals output by the multiple audio output units 204 at the corresponding frequency band, and outputs the mixed second digital audio signals to obtain digital audio with better sound quality and enhance the user's listening experience.

[0067] In one embodiment, Figure 3 As shown, the audio output device 20 further includes a power amplifier module 203. The power amplifier module 203 can be connected to the vehicle host 10 to perform power amplification processing on the second digital audio signal sent by the vehicle host 10 to reduce the impact of signal noise on the digital audio signal and improve the audio playback quality.

[0068] In addition, similar to the audio input device 50 , a second data transceiver unit 201 is also deployed in the audio output device 20 to implement the transmission of audio signals.

[0069] In one embodiment, Figure 3 As shown, the vehicle host 10 in the vehicle audio system further includes an analog-to-digital conversion unit 101 , a third data transceiver unit 102 , a processing unit 103 and a first communication module 104 .

[0070] like Figure 3As shown, the processing unit 103 establishes a connection with the audio output device 20 through the third data transceiver unit 102 to achieve the transmission of the audio signal. The first digital audio signal collected by the audio input device 50 can be transmitted to the processing unit 103 through the second data transceiver unit 201 and the third data transceiver unit 102; the processing unit 103 can also transmit the digital audio signal converted by the analog-to-digital conversion unit 101 to the audio output device 20 through the third data transceiver unit 102 and the second data transceiver unit 201 for audio playback.

[0071] In one embodiment, Figure 3 As shown, the vehicle audio system further includes a gateway unit 40 connected between the vehicle host 10 and the remote communication terminal 30. The first communication module 104 of the vehicle host 10 can establish a communication connection with the gateway unit 40 to realize data transmission between the vehicle host 10 and the remote communication terminal 30.

[0072] In one embodiment, Figure 3 As shown, the remote communication terminal 30 includes a second communication module 301, an encoding unit 302 and a 5G communication module 303. The second communication module 301 can establish a communication connection with the gateway unit 40 to obtain the first digital audio signal transmitted by the vehicle host 10, and transmit it to the vehicle platform through the 5G communication module 303.

[0073] exist Figure 3 In the embodiment, the encoding unit 302 can encode the analog audio signal transmitted by the vehicle platform through the 5G communication module 303, and transmit the encoded analog audio signal to the analog-to-digital conversion unit 101 in the vehicle host 10 to convert the analog audio signal into a digital audio signal, and play the digital audio signal through the audio output device 20.

[0074] exist Figure 3 In the example, L1 and L2 are audio input stream and audio output stream respectively. Figure 3 These two signal flows are introduced.

[0075] For the audio input stream L1, the digital microphone 502 transmits the collected first digital audio signal to the processing unit 103 of the vehicle host 10 through the first data transceiver unit 501, the second data transceiver unit 201 and the third data transceiver unit 102, and transmits it to the remote communication terminal 30 through the first communication module 104 and the gateway unit 40. The second communication module 301 in the remote communication terminal 30 receives the first digital audio signal, and sends the first digital audio signal to the vehicle platform through the 5G communication module 303.

[0076] The vehicle-mounted platform feeds back an analog audio signal to the vehicle. After receiving the analog audio signal, the vehicle implements audio playback through the audio output stream L2. Specifically, the 5G communication module 303 receives the analog audio signal fed back by the vehicle-mounted platform, encodes the analog audio signal through the encoding unit 302, and then transmits it to the analog-to-digital conversion unit 101 in the vehicle-mounted host 10 for analog-to-digital conversion, thereby obtaining a second digital audio signal. Then, the processing unit 103 processes the second digital audio signal to obtain a data transceiver link that can be transmitted in the data transceiver link formed by the data transceiver unit. After the processed second digital audio signal passes through the third data transceiver unit 102 and the second data transceiver unit 201 in turn, the power amplifier module 203 performs power amplification processing on the processed second digital audio signal, and then performs signal processing on the amplified second digital audio signal in the corresponding frequency band through multiple audio output units 204 in different frequency bands, and finally, the audio is played through the mixing unit 205.

[0077] Based on the above content, it can be seen that the solution provided in the embodiment of the present application is based on the original B-CALL mode using analog microphones and ordinary speakers, and an analog-to-digital conversion unit is set in the vehicle-mounted host to realize the playback of digital audio signals through the entire vehicle speakers, and the user's digital audio is collected through a digital microphone to improve the audio quality, thereby improving the user's listening experience in the B-CALL mode.

[0078] An embodiment of the present application further provides a vehicle, which includes the above-mentioned in-vehicle audio system, in which an electronic device is deployed, and the electronic device can execute the in-vehicle audio interaction method in the above-mentioned embodiment.

[0079] Figure 4 The figure shows the hardware structure of the electronic equipment in the vehicle audio system.

[0080] The electronic device may include a processor 401 and a memory 402 storing computer program instructions.

[0081] Specifically, the processor 401 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0082] Memory 402 may include a large capacity memory for data or instructions. By way of example and not limitation, memory 402 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In appropriate cases, memory 402 may include a removable or non-removable (or fixed) medium. In appropriate cases, memory 402 may be inside or outside of an integrated gateway disaster recovery device. In a specific embodiment, memory 402 is a non-volatile solid-state memory.

[0083] The memory may include read-only memory (ROM), random access memory (RAM), magnetic disk storage media devices, optical storage media devices, flash memory devices, electrical, optical or other physical / tangible memory storage devices. Thus, typically, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to an aspect of the present disclosure.

[0084] The processor 401 implements any one of the in-vehicle audio interaction methods in the above embodiments by reading and executing computer program instructions stored in the memory 402 .

[0085] In one example, the electronic device may further include a communication interface 403 and a bus 410. Figure 4 As shown, the processor 401, the memory 402, and the communication interface 403 are connected via a bus 410 and communicate with each other.

[0086] The communication interface 403 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0087] Bus 410 includes hardware, software or both, and the parts of electronic equipment are coupled to each other. For example, but not limitation, bus may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front side bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 410 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the application considers any suitable bus or interconnection.

[0088] In addition, in combination with the in-vehicle audio interaction method in the above embodiments, the present application embodiment can provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by a processor, any in-vehicle audio interaction method in the above embodiments is implemented.

[0089] In addition, in combination with the in-vehicle audio interaction method in the above embodiment, the embodiment of the present application can provide a computer program product for implementation. When the instructions in the computer program product are executed by the processor of the electronic device, the electronic device executes and implements any in-vehicle audio interaction method in the above embodiment.

[0090] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0091] The functional modules shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present application are programs or code segments that are used to perform the required tasks. Programs or code segments can be stored in machine-readable media, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable media" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0092] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0093] The above reference is to the flow chart and / or block diagram of the interactive method of the vehicle audio according to the embodiment of the present disclosure, the vehicle audio system and the vehicle, and describes various aspects of the present disclosure. It should be understood that each box in the flow chart and / or block diagram and the combination of each box in the flow chart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the function / action specified in one or more boxes of the flow chart and / or block diagram. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field programmable logic circuit. It can also be understood that each box in the block diagram and / or flow chart and the combination of boxes in the block diagram and / or flow chart can also be implemented by dedicated hardware that performs a specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions.

[0094] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A vehicle audio interaction method, characterized in that: include: In the case of detecting that the vehicle is in a vehicle breakdown call B-CALL mode, converting audio data input by a user into a first digital audio signal; Sending the first digital audio signal to the vehicle-mounted platform, and receiving an analog audio signal fed back by the vehicle-mounted platform in response to the first digital audio signal; Performing analog-to-digital conversion on the analog audio signal to obtain a second digital audio signal; The second digital audio signal is output.

2. The method according to claim 1, characterized in that The sending the first digital audio signal to the vehicle-mounted platform includes: Decoding the first digital audio signal to obtain a decoded first digital audio signal; Converting the decoded first digital audio signal into an audio message; The audio message is sent to the vehicle-mounted platform via Ethernet.

3. The method according to claim 1, characterized in that The step of performing analog-to-digital conversion on the analog audio signal to obtain a second digital audio signal includes: Performing audio coding processing on the analog audio signal to obtain a coded analog audio signal; Perform analog-to-digital conversion on the encoded analog audio signal to obtain the second digital audio signal.

4. The method according to claim 1, characterized in that: The outputting the second digital audio signal comprises: The second digital audio signal is outputted through an audio output device having multiple frequency bands.

5. The method according to claim 4, characterized in that Before outputting the second digital audio signal through an audio output device having multiple frequency bands, the method further includes: Performing Manchester encoding on the second digital audio signal to obtain an encoded second digital audio signal; The encoded second digital audio signal is transmitted to the audio output device through time division multiplexing technology.

6. The method according to claim 4, characterized in that Outputting the second digital audio signal through an audio output device having multiple frequency bands includes: Performing signal amplification processing on the second digital audio signal to obtain an amplified second digital audio signal; Performing mixing processing on the amplified second digital audio signal in the multiple frequency bands to obtain a mixed second digital audio signal; The mixed second digital audio signal is played through the audio output device.

7. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: In response to a B-CALL start instruction, controlling the vehicle to enter the B-CALL mode from a voice call mode; In response to a B-CALL stop command, the vehicle is controlled to enter the voice call mode from the B-CALL mode.

8. A car audio system, characterized in that: include: Audio input device, vehicle head unit, audio output device and remote communication terminal; The audio input device is used to collect audio data input by a user and convert the audio data into a first digital audio signal; The vehicle-mounted host is connected to the audio input device and is communicatively connected to the vehicle-mounted platform via the remote communication terminal, for receiving the first digital audio signal and transmitting the first digital audio signal to the vehicle-mounted platform; The vehicle-mounted host is also used to receive the analog audio signal fed back by the vehicle-mounted platform for the first digital audio signal, perform analog-to-digital conversion to obtain a second digital audio signal, and send the second digital audio signal to the audio output device to output the second digital audio signal.

9. The system according to claim 8, characterized in that The audio output device comprises: a plurality of audio output units with different frequency bands and a mixing unit; The multiple audio output units are connected in parallel and perform signal processing on the second digital audio signal in corresponding frequency bands respectively; The mixing unit is used to mix the second digital audio signals output by the multiple audio output units in corresponding frequency bands, and output the mixed second digital audio signals.

10. The system according to claim 8 or 9, characterized in that The audio output device further includes: a power amplification module connected to the vehicle-mounted host and used for performing power amplification processing on the second digital audio signal sent by the vehicle-mounted host.

11. A vehicle, characterized in that: The vehicle audio system comprises the vehicle audio system as claimed in any one of claims 8 to 10.

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