Vehicle noise reduction system and vehicle

Abstract

The utility model provides a vehicle noise reduction system and a vehicle. The vehicle noise reduction system comprises a vehicle-mounted central control host, audio adjustment control equipment, a digital signal converter, at least one vehicle sensor, at least one analog microphone and at least one loudspeaker, the audio adjustment control equipment is respectively connected with the vehicle-mounted central control host, the digital signal converter and each loudspeaker in the at least one loudspeaker; the digital signal converter is connected with each of the at least one analog microphone and is connected with each of the at least one vehicle sensor; and the vehicle sensor is connected with the digital signal converter and is sequentially connected with other vehicle sensors in the at least one vehicle sensor in series. According to the vehicle noise reduction system, the cost of the vehicle noise reduction system is reduced and the practicability of the vehicle noise reduction system is improved by adopting a mode of combining at least one analog microphone and the digital signal converter.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly to a vehicle noise reduction system and a vehicle. Background Art

[0002] With the development of vehicle technology and the popularization of vehicle intelligence, the standards for a comfortable driving experience by users have gradually increased. As the standards for a comfortable driving experience by users increase, the requirements for in-vehicle multimedia devices by users have also gradually increased.

[0003] In the prior art, in order to reduce the problems that audio signals are vulnerable to interference and have high loss, digital microphones are mostly selected as the sound collection devices in the existing vehicle noise reduction systems.

[0004] However, multiple digital microphones need to be connected in series. If a microphone at one position fails, the entire vehicle noise reduction system cannot be used, and the practicability is poor. At the same time, the use of digital microphones also causes the problem of high cost. Content of the Utility Model

[0005] The utility model provides a vehicle noise reduction system and a vehicle, so as to achieve the effects of improving the practicability of the vehicle noise reduction system and reducing the cost of the vehicle noise reduction system.

[0006] In a first aspect, the utility model provides a vehicle noise reduction system, including:

[0007] An in-vehicle central control host, an audio adjustment control device, a digital signal converter, at least one vehicle sensor, at least one analog microphone, and at least one speaker;

[0008] The audio adjustment control device is respectively connected to the in-vehicle central control host, the digital signal converter, and each speaker among the at least one speaker;

[0009] The digital signal converter is respectively connected to each analog microphone among the at least one analog microphone and each vehicle sensor among the at least one vehicle sensor;

[0010] The vehicle sensors connected to the digital signal converter are sequentially connected in series with other vehicle sensors among the at least one vehicle sensor.

[0011] The vehicle noise reduction system as described above, wherein between the audio adjustment control device, the in-vehicle central control host, and the digital signal converter, between the digital signal converter and one of the at least one vehicle sensors, and between each of the vehicle sensors, they are connected through an A2B bus; between the audio adjustment control device and each of the at least one speakers, and between the digital signal converter and each of the at least one analog microphones, they are connected through hard wires.

[0012] The vehicle noise reduction system as described above, wherein the digital signal converter includes: a first A2B chip and multiple analog-to-digital converters; the first A2B chip is respectively connected to the audio adjustment control device and one of the at least one vehicle sensors; the analog-to-digital converters are respectively connected to the first A2B chip and two of the at least one analog microphones.

[0013] The vehicle noise reduction system as described above, wherein the audio adjustment control device includes: a second A2B chip, a digital-to-analog converter, and a power amplifier; the second A2B chip is respectively connected to the first A2B chip, the in-vehicle central control host, and the digital-to-analog converter; the power amplifier is respectively connected to the digital-to-analog converter and each of the at least one speakers.

[0014] The vehicle noise reduction system as described above, wherein the in-vehicle central control host includes: a third A2B chip, a data cache module, a first digital signal processor, a second digital signal processor, and a micro control module; the third A2B chip is respectively connected to the second A2B chip, the data cache module, the second digital signal processor, and the micro control module; the first digital signal processor is respectively connected to the data cache module, the second digital signal processor, and the micro control module; the micro control module is connected to the data cache module and the second digital signal processor.

[0015] The vehicle noise reduction system as described above, wherein the first digital signal processor is an arithmetic processor, and the second digital signal processor is an audio adjustment processor.

[0016] The vehicle noise reduction system as described above, wherein each of the at least one vehicle sensor includes a fourth A2B chip; the fourth A2B chips included in the vehicle sensors connected to the digital signal converter are respectively connected to the first A2B chip and the fourth A2B chips included in the vehicle sensors connected in series with this vehicle sensor; the fourth A2B chips included in each of the other vehicle sensors among the at least one vehicle sensor are connected to the fourth A2B chips included in the vehicle sensors connected in series with this vehicle sensor.

[0017] The vehicle noise reduction system as described above, wherein the vehicle sensor is an acceleration sensor and / or a vibration sensor.

[0018] The vehicle noise reduction system as described above, wherein the vehicle noise reduction system includes four analog microphones and four speakers.

[0019] The vehicle noise reduction system as described above, wherein the digital signal converter includes two of the analog-to-digital converters.

[0020] In a second aspect, the present utility model provides a vehicle, wherein the vehicle includes the system as described in the first aspect above and / or various possible implementation manners of the first aspect.

[0021] The vehicle noise reduction system and vehicle provided by the present utility model, by adopting the combination of at least one analog microphone and a digital signal converter, reduces the cost of the vehicle noise reduction system. At the same time, by adopting the method of connecting the digital signal converter to each of the at least one analog microphone respectively, the vehicle noise reduction system can perform the acquisition and noise reduction processing of analog sound signals when at least one analog microphone does not malfunction, improving the practicability of the vehicle noise reduction system.

[0022] In addition to the technical problems solved by the present utility model, the technical features constituting the technical solution, and the beneficial effects brought by these technical features of the technical solution described above, other technical problems that the vehicle noise reduction system and vehicle provided by the present utility model can solve, other technical features included in the technical solution, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manner. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for describing the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Schematic diagram of the structure and internal connection relationship of a vehicle noise reduction system provided by the first embodiment of the present utility model;

[0025] Figure 2 Schematic diagram of the structure and internal connection relationship of a vehicle noise reduction system provided by the second embodiment of the present utility model.

[0026] Through the above-mentioned drawings, specific embodiments of the present utility model have been shown, and more detailed descriptions will be provided hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

[0027] Description of reference numerals:

[0028] 100 - Vehicle noise reduction system;

[0029] 1 - In-vehicle central control host;

[0030] 2 - Audio adjustment control device;

[0031] 3 - Digital signal converter;

[0032] 4 - Vehicle sensor;

[0033] 5 - Analog microphone;

[0034] 6 - Speaker;

[0035] 7 - A2B bus;

[0036] 8 - Hard wire;

[0037] 9 - First A2B chip;

[0038] 10 - Analog-to-digital converter;

[0039] 11 - Second A2B chip;

[0040] 12 - Digital-to-analog converter;

[0041] 13 - Power amplifier;

[0042] 14 - Third A2B chip;

[0043] 15 - Data cache module;

[0044] 16 - First digital signal processor;

[0045] 17 - Second digital signal processor;

[0046] 18 - Micro control module;

[0047] 19 - Fourth A2B Chip

[0048] Through the above - mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0049] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0050] In the prior art, in order to reduce the problems that audio signals are vulnerable to interference and have high loss, digital microphones are mostly selected as the sound - collecting devices in the existing vehicle noise - reduction systems. However, multiple digital microphones need to be connected in series. If a microphone at one position fails, the entire vehicle noise - reduction system cannot be used, resulting in poor practicability. At the same time, the use of digital microphones also leads to the problem of high cost.

[0051] In order to solve the above - mentioned technical problems, the present utility model proposes a vehicle noise - reduction system and a vehicle: By adopting a combination of at least one analog microphone and a digital signal converter, the cost of the vehicle noise - reduction system is reduced. At the same time, by connecting the digital signal converter to each of the at least one analog microphone respectively, the vehicle noise - reduction system can collect and perform noise - reduction processing on analog sound signals when at least one analog microphone does not fail, improving the practicability of the vehicle noise - reduction system.

[0052] Figure 1 It is a schematic diagram of the structure and internal connection relationship of a vehicle noise - reduction system provided by the first embodiment of the present utility model.

[0053] As Figure 1 shown, this embodiment provides a vehicle noise - reduction system. The vehicle noise - reduction system 100 includes:

[0054] An in - vehicle central control host 1, an audio adjustment control device 2, a digital signal converter 3, at least one vehicle sensor 4, at least one analog microphone 5, and at least one speaker 6;

[0055] The audio adjustment control device 2 is respectively connected to the in - vehicle central control host 1, the digital signal converter 3, and each of the at least one speaker 6; so as to enable the audio adjustment control device 2 to send the digital audio signal received from the digital signal converter 3 to the in - vehicle central control host 1.

[0056] The digital signal converter 3 is respectively connected to each of at least one analog microphone 5 and each of at least one vehicle sensor 4;

[0057] The vehicle sensors 4 connected to the digital signal converter 3 are successively connected in series to other vehicle sensors 4 among at least one vehicle sensor 4.

[0058] Specifically, the vehicle sensor 4 can be used to collect digital noise signals. Among them, the vehicle sensor 4 that is not connected to the digital signal converter 3 and is only connected to one other vehicle sensor 4 can send the collected digital noise signal to the vehicle sensor 4 connected to it after collecting the digital noise signal; among them, the vehicle sensor 4 connected to two vehicle sensors 4, in addition to collecting digital noise signals, also receives the digital noise signal sent by one of the vehicle sensors 4 connected to it, and sends the collected digital noise signal and the received digital noise signal to the other vehicle sensor 4 connected to it; among them, the vehicle sensor 4 connected to the digital signal converter 3, in addition to collecting digital noise signals, also receives the digital noise signal sent by the other vehicle sensor 4 connected to it, and sends the collected digital noise signal and the received digital noise signal to the digital signal converter 3.

[0059] Specifically, the digital signal converter 3 can be used to receive digital noise signals from the vehicle sensors 4 connected to it and send the received digital noise signals to the audio adjustment control device 2. Specifically, the digital signal converter 3 can also be used to receive analog sound signals from each of at least one analog microphone 5 connected to it, convert the received analog sound signals into digital sound signals, and send the digital sound signals to the audio adjustment control device 2.

[0060] Specifically, the analog microphone 5 can be used to collect analog sound signals and send the collected analog sound signals to the digital signal converter 3.

[0061] Specifically, the audio adjustment control device 2 can be used to receive digital noise signals and digital sound signals from the digital signal converter 3 and send the received digital noise signals and digital sound signals to the vehicle-mounted central control host 1.

[0062] Specifically, the in-vehicle central control host 1 can be used to receive and cache a digital noise signal and a digital sound signal from the audio adjustment control device 2, perform combined processing on the cached digital noise signal and digital sound signal, perform noise reduction processing on the combined digital noise signal and digital sound signal to obtain a digital sound signal after noise reduction processing, and send the digital sound signal after noise reduction processing to the audio adjustment control device 2.

[0063] The audio adjustment control device 2 can also be used to receive the digital sound signal after noise reduction processing from the in-vehicle central control host 1, convert the received digital sound signal after noise reduction processing into an analog sound signal after noise reduction processing, perform amplification processing on the analog sound signal after noise reduction processing to obtain a final analog sound signal, and send the final analog sound signal to each of at least one speaker 6 connected thereto, so that the speaker 6 plays the sound corresponding to the final analog sound signal.

[0064] The vehicle noise reduction system provided in this embodiment adopts a combination of at least one analog microphone and a digital signal converter, which reduces the cost of the vehicle noise reduction system. At the same time, by connecting the digital signal converter to each of at least one analog microphone respectively, the vehicle noise reduction system can perform the acquisition and noise reduction processing of analog sound signals when at least one analog microphone does not malfunction, improving the practicability of the vehicle noise reduction system.

[0065] Figure 2 It is a schematic diagram of the structure and internal connection relationship of a vehicle noise reduction system provided in the second embodiment of the present invention. On the basis of Figure 1 the embodiment shown, in order to make the vehicle noise reduction system more practical and obvious, this embodiment provides another specific embodiment of the vehicle noise reduction system.

[0066] As Figure 2 shown, this embodiment provides a vehicle noise reduction system, and the vehicle noise reduction system 100 includes:

[0067] an in-vehicle central control host 1, an audio adjustment control device 2, a digital signal converter 3, at least one vehicle sensor 4, at least one analog microphone 5, and at least one speaker 6;

[0068] Among them, the audio adjustment control device 2 is respectively connected to the in-vehicle central control host 1, the digital signal converter 3, and each of at least one speaker 6; to enable the audio adjustment control device 2 to send the digital audio signal received from the digital signal converter 3 to the in-vehicle central control host 1,

[0069] The digital signal converter 3 is respectively connected to each of at least one analog microphone 5 and each of at least one vehicle sensor 4;

[0070] The vehicle sensors 4 connected to the digital signal converter 3 are successively connected in series with other vehicle sensors 4 among at least one vehicle sensor 4.

[0071] Among them, the descriptions of the in-vehicle central control host 1, the audio adjustment control device 2, the digital signal converter 3, at least one vehicle sensor 4, at least one analog microphone 5, and at least one speaker 6 can be referred to Figure 1 the descriptions in the illustrated embodiments, which will not be elaborated here.

[0072] Among them, between the audio adjustment control device 2 and the in-vehicle central control host 1, and the digital signal converter 3, between the digital signal converter 3 and one vehicle sensor 4 among at least one vehicle sensor 4, and between each vehicle sensor 4, they are connected through the A2B bus 7; to ensure the accurate transmission of digital noise signals, digital sound signals, and the digital sound signals after noise reduction processing.

[0073] Between the audio adjustment control device 2 and each speaker 6 among at least one speaker 6, and between the digital signal converter 3 and each analog microphone 5 among at least one analog microphone 5, they are connected through a hard wire 8. To ensure the accurate transmission of analog sound signals and the final analog sound signals.

[0074] Optionally, the digital signal converter 3 includes: a first A2B chip 9 and multiple analog-to-digital converters 10; among them, the first A2B chip 9 is respectively connected to the audio adjustment control device 2 and one vehicle sensor 4 among at least one vehicle sensor 4; the analog-to-digital converter 10 is respectively connected to the first A2B chip 9 and two analog microphones 5 among at least one analog microphone 5.

[0075] Specifically, the first A2B chip 9 is the A2B chip included in the digital signal converter 3, which can be used to receive digital noise signals from one vehicle sensor 4 among at least one vehicle sensor 4, that is, the vehicle sensor 4 connected to it, and send the received digital noise signals to the audio adjustment control device 2.

[0076] Specifically, the analog-to-digital converter 10 can be used to receive analog sound signals from two analog microphones 5 among at least one analog microphone 5 connected to it, convert the received analog sound signals into digital sound signals, and send the digital sound signals to the first A2B chip 9, where the first A2B chip 9 can also be used to send the received digital sound signals to the audio adjustment control device 2.

[0077] Among them, the present application does not limit the number of analog microphones 5 and analog-to-digital converters 10 included in the vehicle noise reduction system 100. Specifically, the number of analog-to-digital converters 10 corresponds to the number of analog microphones 5 included in the vehicle noise reduction system 100, and each analog-to-digital converter 10 can correspond to two analog microphones 5. Optionally, the vehicle noise reduction system 100 may include four analog microphones 5, and each of the analog microphones 5 can be respectively arranged in four driving areas of the vehicle to improve the accuracy of the collected analog sound signals. Optionally, the digital signal converter 3 includes two analog-to-digital converters 10 to ensure that the analog sound signals collected by each analog microphone 5 included in the vehicle noise reduction system 100 are converted into digital sound signals and sent to the first A2B chip 9. Each digital-to-analog converter 12 is respectively connected to two of the four analog microphones 5 described above to receive analog sound signals from the two connected analog microphones 5 respectively, convert the received analog sound signals into digital sound signals, and send the digital sound signals to the first A2B chip 9.

[0078] Further, a capacitor is further included between the analog-to-digital converter 10 and the analog microphone 5 to shield the interference with the received analog sound signal. Specifically, the interference signal is a DC signal, and the analog sound signal is an AC signal to improve the accuracy of the received analog sound signal.

[0079] Optionally, the analog-to-digital converter 10 sends the digital sound signal to the first A2B chip 9 through the pulse density modulation interface PDM, and the first A2B chip 9 receives the digital sound signal sent by the analog-to-digital converter 10 through the digital receive port DRX to ensure the accurate transmission of the digital sound signal.

[0080] Optionally, the first A2B chip 9 can also be power-connected to the analog-to-digital converter 10 through a first voltage regulator to supply power to the analog-to-digital converter 10. Optionally, the first A2B chip 9 can also be power-connected to each of at least one analog microphone 5 included in the vehicle noise reduction system 100 through a second voltage regulator. Among them, the first voltage regulator connected to the analog-to-digital converter 10 and the second voltage regulator connected to the analog microphone 5 can both be used to stabilize the voltage. The voltage value after voltage stabilization by the first voltage regulator is different from the voltage value after voltage stabilization by the second voltage regulator. For example, the voltage value after voltage stabilization by the first voltage regulator can be 3.3V, and the voltage value after voltage stabilization by the second voltage regulator can be 5V. Further, a resistor is also included between the second voltage regulator and each of at least one analog microphone 5 to convert the voltage after voltage stabilization by the second voltage regulator into a bias voltage to supply power to each of at least one analog microphone 5. Among them, the magnitude of the resistance value indicated by the resistor can be preset according to user requirements. For example, it is set to 425 ohms.

[0081] Optionally, each of at least one vehicle sensor 4 includes a fourth A2B chip 19; the fourth A2B chip 19 included in the vehicle sensor 4 connected to the digital signal converter 3 is respectively connected to the first A2B chip 9 and the fourth A2B chip 19 included in the vehicle sensor 4 in series with this vehicle sensor 4; the fourth A2B chip 19 included in each of the other vehicle sensors 4 among at least one vehicle sensor 4 is connected to the fourth A2B chip 19 included in the vehicle sensor 4 in series with this vehicle sensor 4.

[0082] Specifically, the fourth A2B chip 19 is the A2B chip included in the vehicle sensor 4 and can be used to receive or send digital noise signals. Specifically, it can send the collected digital noise signals to the fourth A2B chip 19 of the vehicle sensor 4 connected to it, and can also be used to send the digital noise signals received from the fourth A2B chip 19 of other vehicle sensors 4 to the fourth A2B chip 19 of another vehicle sensor 4 connected to it, or to the first A2B chip 9 in the digital signal converter 3.

[0083] Optionally, the vehicle sensor 4 is an acceleration sensor and / or a vibration sensor, and the digital noise signal includes an acceleration digital noise signal and / or a vibration digital noise signal. Among them, the acceleration sensor is used to collect the acceleration digital noise signal of the vehicle, and the acceleration digital noise signal is a digital signal representing noise based on acceleration. Among them, the vibration sensor is used to collect the vibration digital noise signal of the vehicle, and the vibration digital noise signal is a digital signal representing noise based on vibration. Specifically, if the vehicle sensor 4 is an acceleration sensor, the digital noise signal includes an acceleration digital noise signal. If the vehicle sensor 4 is a vibration sensor, the digital noise signal includes a vibration digital noise signal. If the vehicle sensor 4 is an acceleration sensor and a vibration sensor, the digital noise signal includes an acceleration digital noise signal and a vibration digital noise signal.

[0084] Among them, the present invention does not limit the number of vehicle sensors 4. Optionally, the vehicle noise reduction system 100 provided by the present invention may include four vehicle sensors 4. Among them, each vehicle sensor 4 can be respectively arranged near the four wheels of the vehicle to improve the accuracy of the collected digital noise signal.

[0085] Optionally, the audio adjustment control device 2 includes: a second A2B chip 11, a digital-to-analog converter 12, and a power amplifier 13. Among them, the second A2B chip 11 is respectively connected to the first A2B chip 9, the in-vehicle central control host 1, and the digital-to-analog converter 12. The power amplifier 13 is respectively connected to the digital-to-analog converter 12 and each speaker 6 among at least one speaker 6.

[0086] Specifically, the second A2B chip 11 is the A2B chip included in the audio adjustment control device 2, and can be used to receive the digital noise signal and the digital sound signal from the first A2B chip 9, and send the received digital noise signal and digital sound signal to the in-vehicle central control host 1.

[0087] Specifically, the second A2B chip 11 can also be used to receive the digitally processed sound signal after noise reduction from the in-vehicle central control host 1, and send the received digitally processed sound signal after noise reduction to the digital-to-analog converter 12 connected thereto.

[0088] Specifically, the digital-to-analog converter 12 converts the received digitally processed sound signal after noise reduction into an analog sound signal after noise reduction, and sends the obtained analog sound signal after noise reduction to the power amplifier 13 connected thereto.

[0089] Specifically, the power amplifier 13 amplifies the received analog sound signal after noise reduction processing to obtain a final analog sound signal, and sends the final analog sound signal to each of at least one speaker 6 connected thereto, so that the speaker 6 plays the sound corresponding to the final analog sound signal.

[0090] Among them, the number of speakers 6 included in the vehicle noise reduction system 100 in this application is not limited. Optionally, the vehicle noise reduction system 100 may include four speakers 6. Among them, each analog speaker 6 may be respectively arranged in four driving areas of the vehicle to improve the riding experience of the passengers in each driving area.

[0091] Optionally, the vehicle-mounted central control host 1 includes: a third A2B chip 14, a data cache module 15, a first digital signal processor 16, a second digital signal processor 17, and a micro control module 18; the third A2B chip 14 is respectively connected to the second A2B chip 11, the data cache module 15, the second digital signal processor 17, and the micro control module 18; the first digital signal processor 16 is respectively connected to the data cache module 15, the second digital signal processor 17, and the micro control module 18; the micro control module 18 is connected to the data cache module 15 and the second digital signal processor 17.

[0092] Specifically, the third A2B chip 14 is the A2B chip included in the vehicle-mounted central control host 1, and can be used to receive the digital noise signal and the digital sound signal from the second A2B chip 11.

[0093] Specifically, the micro - control module 18 is used to control the third A2B chip 14 connected thereto to send the received digital noise signal and digital sound signal to the data buffer module 15 connected thereto. The micro - control module 18 is also used to control the data buffer module 15 connected thereto to perform buffer processing on the received digital noise signal and digital sound signal. Specifically, the micro - control module 18 is further used to control the first digital signal processor 16 connected thereto to extract the buffered digital noise signal and digital sound signal from the data buffer module 15 connected thereto, control the first digital signal processor 16 connected thereto to perform combination processing on the extracted digital noise signal and digital sound signal, and control the first digital signal processor 16 connected thereto to send the digitally combined noise signal and digital sound signal to the second digital signal processor 17. The micro - control module 18 is also used to control the second digital signal processor 17 connected thereto to perform noise reduction processing on the received combined digital noise signal and digital sound signal to obtain a digitally noise - reduced sound signal, and control the second digital signal processor 17 connected thereto to send the noise - reduced digital sound signal to the third A2B chip 14. The micro - control module 18 is also used to control the third A2B chip 14 connected thereto to send the received noise - reduced digital sound signal to the digital - to - analog converter 12.

[0094] Among them, the types of the first digital signal processor 16 and the second digital signal processor 17 in this application are not limited. Any digital signal processor that can meet the above functions can be used as the first digital signal processor 16 and the second digital signal processor 17 provided by the present utility model. Optionally, the first digital signal processor 16 is an arithmetic processor, and the second digital signal processor 17 is an audio adjustment processor. Among them, the arithmetic processor is used to perform combination processing on the digital noise signal and the digital sound signal. Among them, the audio adjustment processor is used to perform frequency modulation and noise reduction processing on the combined digital noise signal and digital sound signal. For example, the digital noise signal in the combined digital noise signal and digital sound signal is adjusted into a wave opposite to the digital sound signal to remove the noise in the digital sound signal.

[0095] The vehicle noise reduction system provided in this embodiment has a detailed description of the specific structures of the in - vehicle central control host, the audio adjustment control device, and the digital signal converter. Based on the Figure 1 shown embodiment, the accuracy of the vehicle noise reduction system is improved.

[0096] This application also provides a vehicle. Among them, the vehicle includes the above - mentioned vehicle noise reduction system, and its implementation principle and technical effects are similar, which will not be elaborated here in this embodiment.

[0097] In this specification, the embodiments or implementation manners are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0098] In the description of this specification, the description with reference to terms such as "one implementation manner", "some implementation manners", "illustrative implementation manner", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the implementation manner or example are included in at least one implementation manner or example of the present utility model. In this specification, the illustrative expression of the above terms does not necessarily refer to the same implementation manner or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more implementation manners or examples.

[0099] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A vehicle noise reduction system, characterized in that: include: An in-vehicle central control host, an audio adjustment control device, a digital signal converter, at least one vehicle sensor, at least one analog microphone and at least one speaker; The audio adjustment control device is respectively connected to the vehicle-mounted central control host, the digital signal converter and each of the at least one speaker; The digital signal converter is respectively connected to each analog microphone of the at least one analog microphone and to each vehicle sensor of the at least one vehicle sensor; The vehicle sensor connected to the digital signal converter is sequentially connected in series with other vehicle sensors in the at least one vehicle sensor.

2. The system according to claim 1, characterized in that The audio adjustment control device is connected to the vehicle-mounted central control host, the digital signal converter, the digital signal converter and one of the at least one vehicle sensor, and each of the vehicle sensors is connected via an A2B bus; The audio adjustment control device is connected to each of the at least one speaker, and the digital signal converter is connected to each of the at least one analog microphone via hard wires.

3. The system according to claim 2, characterized in that The digital signal converter comprises: a first A2B chip and a plurality of analog-to-digital converters; The first A2B chip is connected to the audio adjustment control device and one of the at least one vehicle sensor respectively; The analog-to-digital converter is connected to the first A2B chip and two analog microphones of the at least one analog microphone respectively.

4. The system according to claim 3, characterized in that The audio adjustment control device includes: a second A2B chip, a digital-to-analog converter and a power amplifier; The second A2B chip is connected to the first A2B chip, the vehicle-mounted central control host and the digital-to-analog converter respectively; The power amplifier is respectively connected to the digital-to-analog converter and each of the at least one speaker.

5. The system according to claim 4, characterized in that The vehicle-mounted central control host includes: a third A2B chip, a data cache module, a first digital signal processor, a second digital signal processor, and a microcontroller module; The third A2B chip is respectively connected to the second A2B chip, the data cache module, the second digital signal processor and the microcontroller module; The first digital signal processor is connected to the data cache module, the second digital signal processor and the micro control module respectively; The microcontrol module is connected to the data cache module and the second digital signal processor.

6. The system according to claim 5, characterized in that The first digital signal processor is an operation processor, and the second digital signal processor is an audio adjustment processor.

7. The system according to claim 3, characterized in that Each of the at least one vehicle sensor includes a fourth A2B chip; the fourth A2B chip included in the vehicle sensor connected to the digital signal converter is respectively connected to the first A2B chip and the fourth A2B chip included in the vehicle sensor connected in series with the vehicle sensor; the fourth A2B chip included in each of the other vehicle sensors in the at least one vehicle sensor is connected to the fourth A2B chip included in the vehicle sensor connected in series with the vehicle sensor.

8. The system according to claim 7, characterized in that The vehicle sensor is an acceleration sensor and / or a vibration sensor.

9. The system according to any one of claims 3 to 8, characterized in that: The vehicle noise reduction system includes four analog microphones and four speakers, and the digital signal converter includes two analog-to-digital converters.

10. A vehicle, characterized in that: The vehicle comprises the system of any one of claims 1-9.

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