CN110136753A - Distributed locomotive audio processing system and car entertainment device - Google Patents
Distributed locomotive audio processing system and car entertainment device Download PDFInfo
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- CN110136753A CN110136753A CN201910344286.8A CN201910344286A CN110136753A CN 110136753 A CN110136753 A CN 110136753A CN 201910344286 A CN201910344286 A CN 201910344286A CN 110136753 A CN110136753 A CN 110136753A
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B31/00—Arrangements for the associated working of recording or reproducing apparatus with related apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
Abstract
The present invention provides a kind of distributed locomotive audio processing systems comprising one or more first generic modules, one or more second generic modules, one or more third generic modules, vehicle-mounted ethernet gateway.When first generic module, second generic module, when third generic module includes vehicle-mounted Ethernet interface, first generic module, second generic module, third generic module is electrically connected by vehicle-mounted Ethernet interface through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway, compared with prior art, technical solution of the present invention has the advantages that distributed locomotive audio processing system of the invention, method and car entertainment device are by audiogenic device, playback equipment separates, so that Each performs its own functions for these separation equipments, greatly reduce the processing load of on-vehicle host, it can better implement " control " this core function, and for terminal consumer such as driver, since host interface does not generate variation, their operating habit does not change.
Description
Technical field
The present invention relates to vehicle intelligent process field more particularly to a kind of distributed locomotive audio processings based on Ethernet
Method, system and car entertainment device.
Background technique
Vehicle entertainment system experienced content vector, the continuous leather of communications carrier/agreement in prolonged development course
Newly.Under the background for being constantly included in the newest science and technology of industry, technology is increasingly advanced, the car entertainment of terminal consumer's sustainable growth
Demand is gradually being satisfied on one side, is also further promoting demand on one side, and industry supply and demand is in a kind of and benign mutually promotes
Rise form.
Car audio system, as a part extremely important in vehicle entertainment system, content vector experienced CD,
DVD, AUX audio port, plug-in memory (such as USB flash disk) and mobile phone music generally used now, cloud music etc.；Meanwhile audio passes
Defeated mode is also developed from traditional analogue audio frequency to digital audio, and combines the existing communication technology, communication type, includes USB
Audio, Bluetooth audio frequency, SPDIF audio and MOST audio etc.；Audio track number is also from two channel stereos of early stage toward multi-pass
The development such as road, surround sound, such as 5.1,7.1,11.1, or even have been incorporated into the concept of space three-dimensional sound channel, such as 11.1.2；?
Introduce voice control, active noise reduction, after the emerging audio processing concept such as different sound areas and technology, audio processing zero on vehicle
Number of packages amount also inevitably persistently increases considerably.Certainly, existing car audio system is just continuing towards greater flow, more
Multinode, more comfortable high-tech trend rapid development true to nature.
In contrast, compared to audio system technology rapid development, the processing scheme of existing car audio system but one
Directly there is no the changes of the technology of essence.It is well known that the vehicle-mounted audio processing system of the prior art generally by
Infotainment System is commonly called as on-vehicle host (Head Unit) and speaker system and forms, when needing support multi-pass again
When the case where road speaker system and high-quality or even brand sound equipment, then vehicle-mounted audio processing system is vehicle-mounted by on-vehicle host
External power amplifier, speaker system composition；That is, all sound source devices, such as microphone, radio, multimedia, Yun Yinle are led
Navigate sound, and CD/DVD etc. is required to be connected to on-vehicle host, or is directly integrated in inside on-vehicle host, by on-vehicle host it is unified into
Row audio mixing, transmission, audio effect processing etc. handle operation action.
In consideration of it, main problem existing for the technical solution of the vehicle-mounted audio processing system of the prior art has the following:
1, the node of onboard audio is continuously increased, and the software of the required support of on-vehicle host handles complexity also constantly
Rise, undoubtedly increases the exploitation complexity and risk of the on-vehicle host as vehicle entertainment system " brain ".
2, in a fairly large number of occasion of vehicle-mounted loudspeaker, existing scheme of coming down in a continuous line on the market is using an external function
It puts to push multiple speaker operations, such High-power amplifier consumption brings the huge challenge to heat dissipation technology equipment, and
One designing and developing for external power amplifier for meeting power and heat dissipation performance requirement is also required to longer time and relatively high skill
Art threshold, and price and cost are also very expensive, also limit the widely available of vehicle-mounted multi-loudspeaker system to a certain extent.
3, no matter the modification of any one audio node is all likely to result in phase to on-vehicle host or vehicle-mounted external power amplifier
When software and hardware change, in this way, also increasing development cost while lacking technical solution flexibility and technical compatibility is wanted
Summation process risk.
1 in regarding to the issue above and 3, the current universal reply processing mode of the prior art is entertainment systems platform
Change, improves the versatility of the entertainment systems platform to reduce technology change to the greatest extent.Regarding to the issue above 2, the prior art
Improvement project mainly proposes that efficient D class power amplifier chip carrys out raising efficiency to optimize heat dissipation performance to reduce wind
Danger.But the Optimal improvements scheme integrally promoted based on technical solution that is current and finding no vehicle-mounted audio processing system.
In conclusion the positive of car audio system in order to effectively overcome the above-mentioned prior art continues towards greater flow,
The trend development of more nodes, and the technology that the processing scheme of car audio system never has essence changes, the two is serious
Disconnect situation about cannot be adapted, a kind of new distributed locomotive audio processing system, method and vehicle based on vehicle-mounted Ethernet
It is imperative for carrying the invention of entertainment device.
Summary of the invention
Problems solved by the invention is that the car audio system of the prior art is just continuing towards greater flow, more nodes
Trend development, and the technology that the processing scheme of car audio system never has essence changes, the two cannot be seriously adapted；
To solve the above problems, the present invention provides a kind of distributed locomotive audio processing systems comprising one or more first kind
Module, one or more second generic modules, one or more third generic modules, vehicle-mounted ethernet gateway；
First generic module includes at least off-board Ethernet interface or vehicle-mounted Ethernet interface, controls chip, and second
Generic module includes at least off-board Ethernet interface or vehicle-mounted Ethernet interface, control chip, and third generic module includes at least non-
Vehicle-mounted Ethernet interface or vehicle-mounted Ethernet interface, control chip, power amplifier chip；
When first generic module, the second generic module, third generic module include vehicle-mounted Ethernet interface, first kind mould
Block, the second generic module, third generic module by vehicle-mounted Ethernet interface through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway into
Row electrical connection；
Or when first generic module, the second generic module, third generic module only include off-board Ethernet interface, first
Generic module, the second generic module, third generic module are converted by off-board Ethernet interface with corresponding vehicle-mounted Ethernet interface
Module is electrically connected and is electrically connected through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway；
The independent processing of first generic module, the second generic module, third generic module is respectively received signal.
Optionally, the distributed locomotive audio processing system, first generic module or the second generic module or
Off-board Ethernet interface in three generic modules is including at least in CAN interface, LIN interface, MOST interface, FlexRay interface
It is a kind of.
Optionally, the distributed locomotive audio processing system, first generic module are on-vehicle host, described the
Two generic modules are sound source module, and the third generic module is sound output module；
Control command is sent to source of sound mould by vehicle-mounted ethernet gateway by human-computer interaction interface by the on-vehicle host
Block, sound output module, and receive feedback command；
The sound source module carries out the transmitting-receiving of audio signal by vehicle-mounted ethernet gateway, carries out control life with on-vehicle host
It enables and receives and/or feed back.
Optionally, the distributed locomotive audio processing system further includes the 4th generic module, the 4th generic module
Including at least the digital signal processing chip, control chip and Ethernet interface for being applied to sound effect algorithms processing, the 4th generic module
It is electrically connected by Ethernet interface and through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway；
The digital signal processing chip include DSP digital signal processing chip or FPGA digital signal processing chip or specially
One of ASIC digital signal processing chip.
Optionally, the distributed locomotive audio processing system, the 4th generic module, which includes at least, is applied to audio
Digital signal processing chip, control chip and the Ethernet interface of algorithm process, the 4th generic module pass through Ethernet interface and pass through
It crosses Ethernet interface and is electrically connected through vehicle-mounted industry ethernet；
The digital signal processing chip include DSP digital signal processing chip or FPGA digital signal processing chip or specially
One of ASIC digital signal processing chip；
4th generic module is audio effect processing module, is handled applied to the audio signal received, and will place
Audio signal transmission after reason is to on-vehicle host or sound output module；
Control command is sent at audio by the on-vehicle host by human-computer interaction interface by vehicle-mounted ethernet gateway
Module is managed, and receives feedback command；
The audio effect processing module carries out the transmitting-receiving of audio signal by vehicle-mounted ethernet gateway, is controlled with on-vehicle host
System order receives and/or feedback.
Optionally, the distributed locomotive audio processing system, audio signal are based on vehicle-mounted ether through sound source module
Network bus is transferred to vehicle-mounted ethernet gateway, monitors and processes equipment access network based on ethernet by vehicle-mounted ethernet gateway, completes net
Data forwarding and condition managing between network；
On-vehicle host controls transmission and the Correlation method for data processing of the audio signal of sound source module.
Optionally, the distributed locomotive audio processing system, the on-vehicle host are included at least and are in communication with each other
Volume is arranged component, sound field setting component, audio and component is arranged.
Optionally, the distributed locomotive audio processing system, the sound source module include at least microphone module,
Radio receiver module, multimedia music and one of speech recognition and control module.
Optionally, the distributed locomotive audio processing system, the sound output module include at least loudspeaker
One of module, handset module and other playback modules.
Optionally, the distributed locomotive audio processing system, the on-vehicle host control the biography of each sound source module
The audio effect processing of defeated, audio mixing, pattern switching, the sound source module handles chip by the power amplification that each sound source module is equipped with
Reason is completed.
Optionally, the distributed locomotive audio processing system, the on-vehicle host control the biography of each sound source module
The audio effect processing of defeated, audio mixing, pattern switching, the sound source module handles chip by the power amplification that each sound source module is equipped with
Reason is completed or is completed by audio effect processing module.
Optionally, the distributed locomotive audio processing system, the loudspeaker module include being provided with PCBA's
Active device, wherein control chip, power amplification IC chip and Ethernet interface are set on PCBA；
The control chip is used to control power-on and power-off and the work-based logic of PCBA；
Power amplification IC chip is applied to carry out digital-to-analogue conversion and EQ tuning to audio signal, can will treated number
Audio signal is converted into analog signal, then the output of loudspeaker device progress sound is pushed by power amplification；
Vehicle-mounted Ethernet interface, which is applied, receive to digital audio and video signals and returns the digital signal after EQ tuning
It is referred to vehicle-mounted ethernet network for other nodes.
Optionally, the distributed locomotive audio processing system is sealed on the control chip in the Yang Sheng device module
Component and multiple sound output precision are debugged equipped with EQ is packaged on front end assemblies, power chip；
The front end assemblies, to receive Ethernet digital audio and control signal；
The EQ debugs component, to carry out digital-to-analogue conversion and signal amplifying function；
The output precision has multiple sound output function.
Optionally, the distributed locomotive audio processing system, the vehicle-mounted Ethernet interface conversion module include
Module converter chip, conversion interface, vehicle-mounted Ethernet interface, the module converter chip, conversion interface, vehicle-mounted Ethernet interface
It is installed on circuit board and can communicate with each other.
Optionally, the distributed locomotive audio processing system, the type of the conversion interface with need to dock mould
The interface type of block is identical or compatible；
The conversion interface type includes one of CAN interface, LIN interface, MOST interface, FlexRay interface.
Optionally, the distributed locomotive audio processing system, the module converter chip will be for realizing will receive
To off-board Ethernet reference format signal be converted into standard compliant vehicle-mounted ethernet signal by vehicle-mounted Ethernet into
Row transmission；
Or the reference format signal that the signal of the reference format of vehicle-mounted Ethernet is converted into off-board Ethernet is passed
It is defeated.
Optionally, the distributed locomotive audio processing system, the module converter chip, which passes through, to be pre-loaded with
Conversion mapping table between various criterion agreement is converted, and data format conversion processing passes through the place on module converter chip
Reason device calls mapping table to carry out.
Optionally, distributed locomotive audio processing system, the vehicle-mounted ethernet gateway, which includes that multichannel is expansible, to be led to
Believe interface.
The present invention also provides a kind of car entertainment devices comprising the distributed locomotive audio processing of the aforementioned any one
System.
Compared with prior art, technical solution of the present invention has the advantages that distributed locomotive audio of the invention
By audiogenic device, playback equipment is separated for processing system, method and car entertainment device, so that these separation equipments respectively take charge of it
Duty greatly reduces the processing load of on-vehicle host, can better implement " control " this core function, and consumes to terminal
For person such as driver, since host interface does not generate variation, their operating habit does not change.
In addition, using vehicle-mounted Ethernet interface conversion module to based on the transmission between different agreement, realizing will be received
To off-board Ethernet reference format signal be converted into standard compliant vehicle-mounted ethernet signal by vehicle-mounted Ethernet into
The reference format signal that the signal of the reference format of vehicle-mounted Ethernet is converted into off-board Ethernet is transmitted in row transmission,
Vehicle-mounted Ethernet interface conversion module uses so that based on CAN protocol, LIN agreement, MOST agreement and vehicle-mounted Ethernet protocol it
Between signal or data transmission be achieved, reduce the load of vehicle-mounted ethernet gateway processing.Otherwise, the transmission between agreement is logical
Vehicle-mounted ethernet gateway is crossed to carry out, if the conversion between a variety of different agreements all by vehicle-mounted ethernet gateway at
Reason, then can aggravate the load of vehicle-mounted ethernet gateway, loss of data can be generated when serious.Turn by using vehicle-mounted Ethernet interface
Change module, can be converted in time to based on the data transmission between disparate modules agreement, reduce the net of vehicle-mounted Ethernet
The processing load of pass improves transmission rate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the vehicle-mounted host audio system of tradition of the prior art.
Fig. 2 is the modular structure schematic diagram of the distributed locomotive audio processing system the present invention is based on Ethernet.
Fig. 3 is the modular structure signal of another embodiment of distributed locomotive audio processing system the present invention is based on Ethernet
Figure.
Fig. 4 is the structural representation of the 4th generic module of the distributed locomotive audio processing system the present invention is based on Ethernet
Figure.
Fig. 5 is the structural representation of the microphone module of the distributed locomotive audio processing system the present invention is based on Ethernet
Figure.
Fig. 6 is the vehicle-mounted hardware structural diagram of the distributed locomotive audio processing system the present invention is based on Ethernet.
Fig. 7 is the structural schematic diagram of the vehicle-mounted Ethernet interface conversion module of the present invention.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
The invention proposes a kind of distributed locomotive audio processing systems based on vehicle-mounted Ethernet.This processing system is base
It is communicated with each other in each audio node of car of vehicle-mounted ethernet technology, realizes the system to cooperate with resource-sharing.High bandwidth,
The interior Ethernet of high reliability and real-time, in the stability and real-time for ensuring interior each node audio data transmission
Meanwhile also providing flow required for high quality multi-channel audio transmits；Distributed system can will originally only in vehicle-mounted master
Machine or vehicle-mounted power amplifier concentrate the sophisticated functions completed to share each node, effectively reduce each single node complexity and
While risk, the flexibility of the overall plan of processing system is greatly improved.
The following contents will be stated the present invention is based on the method for the distributed locomotive audio processing of vehicle-mounted Ethernet in detail and be
The concrete scheme of system:
The present invention is based on the transmission systems of the audio signal of the distributed audio processing system of vehicle-mounted Ethernet and control signal
One is based on vehicle-mounted industry ethernet, this is also based on following development trend of vehicle network communication bus；It is related to each sound
The Audio Signal Processing of frequency node is completed by each node, i.e., will be unified in originally in on-vehicle host side or external power amplifier side
Appearance is separated；The hardware product form of each node also generates corresponding variation, especially it is unified increase Ethernet interface with
Match vehicle audio transmission network.
Be specifically described below in conjunction with attached drawing: traditional vehicle-mounted audio processing system as shown in Fig. 1 is as it can be seen that traditional vehicle
Carry the audio-frequency load that undertakes inside host be it is quite heavy, especially in voice assistant/speech recognition, microphone array or even K
After the scripts consumer audio business content such as song system is continuously introduced into on-vehicle host audio processing system, the vehicle under traditional approach
It carries host and develops even more complex, development cost is also higher and higher with risk.
Embodiment one
The novel distributed locomotive audio processing system based on vehicle-mounted Ethernet of the invention as shown in Fig. 2 will be upper
The central system for stating the prior art in attached drawing 1 is separated in each node, it is noted that and isolated mode, which is also not, to be randomly assigned,
But it is logically divided with correlation.
The novel distributed locomotive audio processing system based on vehicle-mounted Ethernet of the invention includes at least: one or more
A first generic module, one or more second generic modules, one or more third generic modules, vehicle-mounted ethernet gateway；Described
One generic module includes at least off-board Ethernet interface or vehicle-mounted Ethernet interface, control chip, the second generic module include at least
Off-board Ethernet interface or vehicle-mounted Ethernet interface, control chip, third generic module include at least off-board Ethernet interface
Or vehicle-mounted Ethernet interface, control chip, power amplifier chip；When first generic module, the second generic module, third generic module
When including vehicle-mounted ethernet interface module, the first generic module, the second generic module, third generic module are passed through by vehicle-mounted Ethernet interface
Vehicle-mounted industry ethernet is electrically connected with vehicle-mounted ethernet gateway；Or work as first generic module, the second generic module, third class
When module only includes off-board ethernet interface module, the first generic module, the second generic module, third generic module by it is off-board with
Too network interface be electrically connected with corresponding vehicle-mounted Ethernet interface conversion module and through vehicle-mounted industry ethernet and it is vehicle-mounted with
Too net gateway is electrically connected；First generic module, the second generic module, third generic module being capable of independent processing respectively receptions
To signal.Off-board Ethernet interface in first generic module or the second generic module or third generic module includes at least CAN
One of interface, LIN interface, MOST interface, FlexRay interface.First generic module is on-vehicle host, second class
Module is sound source module, and the third generic module is sound output module；
As shown in Fig. 4, the distributed locomotive audio processing system further includes the 4th generic module, the 4th class mould
Block includes at least the digital signal processing chip, control chip and Ethernet interface for being applied to sound effect algorithms processing, the 4th class mould
Block is electrically connected by Ethernet interface and through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway；The Digital Signal Processing
Chip includes in DSP digital signal processing chip or FPGA digital signal processing chip or special ASIC digital signal processing chip
One kind.4th generic module include at least be applied to sound effect algorithms processing digital signal processing chip, control chip and
Ethernet interface, the 4th generic module and by Ethernet interface and by Ethernet interface are electrically connected through vehicle-mounted industry ethernet
It connects；The digital signal processing chip includes DSP digital signal processing chip or FPGA digital signal processing chip or special ASIC
With one of digital signal processing chip；4th generic module is audio effect processing module, applied to the audio received
Signal is handled, and will treated audio signal transmission to on-vehicle host or sound output module.
As shown in Fig. 3, the distributed locomotive audio processing system further includes vehicle-mounted Ethernet interface conversion module packet
Module converter chip, conversion interface, vehicle-mounted Ethernet interface are included, the module converter chip, conversion interface, vehicle-mounted Ethernet connect
Mouth is installed on circuit board and can communicate with each other.The type of its conversion interface and need the interface class to connection module
Type is identical or compatible；The conversion interface type includes CAN interface, LIN interface, MOST interface, one in FlexRay interface
Kind.Its described module converter chip meets mark for realizing converting the reference format signal of the off-board Ethernet received to
Quasi- vehicle-mounted ethernet signal is transmitted by vehicle-mounted Ethernet；Or it converts the signal of the reference format of vehicle-mounted Ethernet to
The reference format signal of off-board Ethernet is transmitted.The module converter chip passes through the various criterion agreement being pre-loaded with
Between conversion mapping table converted, data format conversion processing calls mapping by the processor on module converter chip
Table carries out.
The on-vehicle host: it includes at least volume setting component, sound field setting component and the audio being in communication with each other and sets
Component is set, only passes through human-computer interaction interface for control command and each sound source module, audio module, loudspeaking is sent to by gateway
Device module, handset module and other playback modules etc., and its instruction of feedback is received simultaneously.
The sound source module: it includes multiple functional modules to sound source module, and audio signal is based on vehicle-mounted through sound source module
Industry ethernet is transferred to vehicle-mounted ethernet gateway, monitors and processes equipment access network based on ethernet by vehicle-mounted ethernet gateway, complete
At internetwork data forwarding and condition managing；Including but not limited to: microphone module, radio receiver module, multimedia music with
And voice controller etc.；The sound source module is based on vehicle-mounted industry ethernet and is connected to ethernet gateway, is controlled by on-vehicle host
The transmission of each sound source module, audio mixing, pattern switching etc., but audio effect processing is voluntarily completed by each sound source module, such as Mike
The Wave beam forming of wind module, echo cancellor, voice control, voice broadcast etc., one of implementation can be each sound source module
Increase dsp chip and carries out audio effect processing.Certainly, certain situations can also be completed by following audio modules.
The audio module: based on some advanced audio demands, especially for multimedia music, the audio of radio
Output carries out tone quality improving, multichannel surrounding sound effect, and improves to vehicle NVH, such as active noise reduction ANC, can also
For realizing be based on sound source module: the Wave beam forming of the received audio signal of microphone module, echo cancellor, voice control with broadcast
The functions such as put.The module specifically includes that one or more Digital Signal Processing dsp chips and Ethernet coffret, with phase
Sound source module is closed, ethernet gateway, on-vehicle host is connected, wherein being substantially carried out audio signal with sound source module and ethernet gateway
Transmitting-receiving, with on-vehicle host be substantially carried out control command receive or feedback.
The ethernet gateway (CAN Ethernet Gateway): including the expansible CAN bus communication interface of multichannel,
Various equipment access network based on ethernet are monitored and processed, to complete different automobile-used internetwork data forwardings and condition managing, in this hair
Responsibility in bright distributed locomotive audio processing system is mainly the transmission of the audio signal of each audio node, audio mixing, and point
Send out control command etc. each；Specific performance then according to selected different manufacturers, different model Ethernet SWITCH chip and property
It can be different.
The loudspeaker module: the loudspeaker module includes the active device for being provided with PCBA, wherein control chip,
Power amplification IC chip and Ethernet interface are set on PCBA；The control chip is used to control the power-on and power-off and work of PCBA
Logic；Power amplification IC chip is applied to carry out digital-to-analogue conversion and EQ tuning to audio signal, can will treated digital sound
Frequency signal is converted into analog signal, then the output of loudspeaker device progress sound is pushed by power amplification；Vehicle-mounted Ethernet connects
Mouth application receive to digital audio and video signals and the digital signal after EQ tuning is back to vehicle-mounted ethernet network for it
He refers to node.Control chip top sealing device in the Yang Sheng device module has front end assemblies, is packaged with EQ tune on power chip
Try component and multiple sound output precision；Front end assemblies, to receive Ethernet digital audio and control signal；EQ debugging group
Part, to carry out digital-to-analogue conversion and signal amplifying function；Output precision has multiple sound output function.
The multichannel loudspeaker module of ethernet gateway, the loudspeaking with the prior art are connected to based on vehicle-mounted industry ethernet
The difference of device module is: conventional loudspeakers are one and receive the physical device that analog audio signal plays out, the present invention
Loudspeaker module in distributed locomotive audio processing system includes: front end, is believed to receive Ethernet digital audio and control
Number；EQ debugs component, to carry out digital-to-analogue conversion and signal amplifying function；Being one has with PCBA hardware circuit board with what is encapsulated
Source module.
The handset module and other playback modules: being connected to ethernet gateway based on vehicle-mounted industry ethernet, be with it is upper
State the similar active module embedded therein of loudspeaker module.This is no longer going to repeat them.
In conclusion the complexity that the present invention realizes all audios in the prior art in the chip of on-vehicle host
High, risk height and situation at high cost are thoroughly overturned, and include that source of sound, each module of audio processing etc. are all arranged in each node
If increasing dry-cure chip or increasing other function module in original chip to realize the function of the Audio Signal Processing of each node
Energy.And for audio signal transmission, it all audio signals will will mainly be received before by on-vehicle host
Hair, processing and control feedback are changed into now only need by gateway and be distributed, and each node is involved in the state of processing, so
The load of on-vehicle host is then greatly reduced, and then solves the problems such as other high risks associated therewith, Gao Chengben.
It is related to the Audio Signal Processing of each audio node, is completed by each node: increases chip or in existing chip
Increase functional module, i.e., the content for being unified in host computer side or external power amplifier side originally is separated: being software algorithm first
Removing, followed by the saving of associated hardware interfaces and structure lightens so that on-vehicle host becomes smaller；The hardware product of each node
Form also generates corresponding change: the interface of each node uniformly supports vehicle-mounted Ethernet, and the passive device of the prior art is now all
Become active device, increase function circuit board, and needs to connect power supply.
It is described in detail below using sound source module and playing module of the invention as embodiment:
1, microphone module: specific as shown in Fig. 5, traditional microphone mould group with the prior art: pickup, PCM/
The output of PDM digital signal, the direct-connected mode to host circuit board are different, the microphone module under distributed system concept of the present invention
It is only unchanged in pickup part, and interface is changed to Ethernet interface, other than exporting digital audio and video signals, also receives number simultaneously
Word audio signal, for example including reference signal and control signal from loudspeaker module, such as from on-vehicle host, and it is former
This echo cancellor carried out in on-vehicle host side, noise reduction, the algorithm process that Wave beam forming etc. is closely related with microphone are existing
Completion is handled in microphone module together, then the microphone module itself can export " clean " of a removal interference
Signal to facilitate subsequent association module to work, such as speech recognition and control module etc..
2, loudspeaker module: specific loudspeaker module is no longer a passive device in the present invention as shown in Fig. 6, and
It is the active device for increasing PCBA design, which mainly includes the modular assembly for being able to achieve following functions as follows:
Chip is controlled, one piece of MCU microprocessor chip is can be or other has the processor of calculation processing power, it
Effect is to control power-on and power-off and work-based logic of active loudspeaker PCBA etc..
Power amplification IC chip, it needs to have digital-to-analogue conversion and EQ function, so that being directed to the EQ tune of each loudspeaker
Sound can be with complete independently, and by treated, digital audio is converted into analog signal, then is raised by power amplification to push
Sound device device sounding.
On the one hand Ethernet interface receives the digital audio and video signals that other module transfers come, on the one hand passes through itself
EQ treated digital signal is back to vehicle-mounted too net network is for other nodes with reference to using.
Previous embodiment part mention the structure of each active loudspeaker module in some pairs of music treatment effects or
The more demanding occasion of audio, such structure will reach the protected mode that target may have certain difficulty or intellectual property
It is not friendly enough.At this time it is contemplated that increasing an audio effect processing module, structure is specifically as shown in Fig. 4, this module core part is
Increase DSP (Digital Signal Processing) chip, quantity can be set as needed for one or more, additionally may include: control
Chip, can be one piece of MCU microprocessor chip or other have the processor of calculation processing power, its effect is that control should
The power-on and power-off of active loudspeaker PCBA and work-based logic etc.；And Ethernet interface, on the one hand receive other module transfer mistakes
On the one hand the digital audio and video signals come save itself by EQ treated digital signal is back to vehicle-mounted too net network for other
Point is with reference to use.In this way, sound effect algorithms, such as Dolby surround sound some advanced or with IP etc. may be implemented.It is such
The mode for increasing audio effect processing module can effectively meet the realization needs of advanced audio.
Embodiment two
The present invention is based on the distributed audio processing methods of vehicle-mounted Ethernet to include at least as shown in Fig. 6:
Three generic modules are electrically connected by vehicle-mounted Ethernet interface through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway:
First generic module includes at least off-board Ethernet interface or vehicle-mounted Ethernet interface, controls chip, and second
Generic module includes at least off-board Ethernet interface or vehicle-mounted Ethernet interface, control chip, and third generic module includes at least non-
Vehicle-mounted Ethernet interface or vehicle-mounted Ethernet interface, control chip, power amplifier chip；When first generic module, the second class
When module, third generic module include vehicle-mounted ethernet interface module, the first generic module, the second generic module, third generic module pass through
Vehicle-mounted Ethernet interface is electrically connected through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway.
Three generic modules are electrically connected by off-board Ethernet interface with corresponding vehicle-mounted Ethernet interface conversion module
It connects and is electrically connected through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway:
When first generic module, the second generic module, third generic module only include off-board ethernet interface module, the
One generic module, the second generic module, third generic module are turned by off-board Ethernet interface with corresponding vehicle-mounted Ethernet interface
Change module to be electrically connected and be electrically connected through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway；First generic module,
Second generic module, third generic module independent can handle and be respectively received signal.First generic module or the second generic module
Or the off-board Ethernet interface in third generic module includes at least CAN interface, LIN interface, MOST interface, FlexRay interface
One of.First generic module is on-vehicle host, and second generic module is sound source module, and the third generic module is sound
Sound output module.
4th generic module is electrically connected by Ethernet interface and through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway
Or the 4th generic module pass through Ethernet interface and by Ethernet interface and being electrically connected through vehicle-mounted industry ethernet；
The distributed locomotive audio processing system further includes the 4th generic module, and the 4th generic module is included at least and answered
Digital signal processing chip, control chip and Ethernet interface, the 4th generic module for sound effect algorithms processing pass through Ethernet
Interface is simultaneously electrically connected through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway；The digital signal processing chip includes DSP
One of digital signal processing chip or FPGA digital signal processing chip or special ASIC digital signal processing chip.
4th generic module include at least be applied to sound effect algorithms processing digital signal processing chip, control chip and
Ethernet interface, the 4th generic module and by Ethernet interface and by Ethernet interface are electrically connected through vehicle-mounted industry ethernet
It connects；The digital signal processing chip includes DSP digital signal processing chip or FPGA digital signal processing chip or special ASIC
With one of digital signal processing chip.
4th generic module is audio effect processing module, is handled applied to the audio signal received, and will place
Audio signal transmission after reason is to on-vehicle host or sound output module.
The embodiment of above-described embodiment is specifically as follows: a kind of distributed locomotive audio-frequency processing method, is applied to divide
Cloth vehicle-mounted audio processing system, include at least based on vehicle-mounted Ethernet on-vehicle host interconnected, sound source module and with
Too net gateway also optionally includes audio module: audio signal is based on vehicle-mounted industry ethernet through sound source module and is transferred to ether
Net gateway；Ethernet gateway monitors and processes equipment access network based on ethernet, completes internetwork data forwarding and condition managing；It is vehicle-mounted
Host controls transmission and the Correlation method for data processing of the audio signal of sound source module.
Embodiment three
The embodiment of the present invention three provides a kind of computer readable storage medium, is stored thereon with computer program, the journey
A kind of distributed locomotive audio-frequency processing method provided such as the present application embodiment is provided when sequence is executed by processor, is applied to
Distributed locomotive audio processing system, include at least based on vehicle-mounted Ethernet on-vehicle host interconnected, sound source module and
Ethernet gateway: audio signal is based on vehicle-mounted industry ethernet through sound source module and is transferred to ethernet gateway；Ethernet gateway prison
Control and processing equipment access network based on ethernet, complete internetwork data forwarding and condition managing；On-vehicle host controls sound source module
The transmission of audio signal and Correlation method for data processing.It can be using any combination of one or more computer-readable media.Meter
Calculation machine readable medium can be computer-readable signal media or computer readable storage medium.Computer readable storage medium
Such as may be-but not limited to-system, device or the device of electricity, magnetic, optical, electromagnetic, infrared ray or semiconductor, or
Any above combination.The more specific example (non exhaustive list) of computer readable storage medium include: with one or
The electrical connections of multiple conducting wires, portable computer diskette, hard disk, random access memory (RAM), read-only memory (ROM), can
Erasing programmable read only memory (EPROM or flash memory), optical fiber, portable compact disc read-only memory (CD-ROM), light are deposited
Memory device, magnetic memory device or above-mentioned any appropriate combination.In this document, computer readable storage medium can be with
To be any include or the tangible medium of storage program, the program can be commanded execution system, device or device use or
It is in connection.
Computer-readable signal media may include in a base band or as carrier wave a part propagate data-signal,
Wherein carry computer-readable program code.The data-signal of this propagation can take various forms, including --- but
It is not limited to --- electromagnetic signal, optical signal or above-mentioned any appropriate combination.Computer-readable signal media can also be
Any computer-readable medium other than computer readable storage medium, which can send, propagate or
Transmission is for by the use of instruction execution system, device or device or program in connection.
The program code for including on computer-readable medium can transmit with any suitable medium, including --- but it is unlimited
In --- wireless, electric wire, optical cable, RF etc. or above-mentioned any appropriate combination.
The computer for executing operation of the present invention can be write with one or more programming languages or combinations thereof
Program code, described program design language include object oriented program language-such as Java, Smalltalk, C++,
It further include conventional procedural programming language-such as " C " language or similar programming language.Program code can be with
It fully executes, partly execute on the user computer on the user computer, being executed as an independent software package, portion
Divide and partially executes or executed on a remote computer or server completely on the remote computer on the user computer.?
Be related in the situation of remote computer, remote computer can pass through the network of any kind --- including local area network (LAN) or
Wide area network (WAN)-be connected to subscriber computer, or, it may be connected to outer computer (such as mentioned using Internet service
It is connected for quotient by internet).
Example IV
As shown in 7, attached drawing, invention also provides a kind of embodiment of vehicle-mounted ethernet standard conversion module: vehicle-mounted Ethernet
Interface conversion module includes off-board Ethernet transmission module, vehicle-mounted Ethernet transmission module and mapping table, wherein it is off-board with
Too network interface conversion module includes one of CAN, LIN, MOST, FlexRay, this implementation is with the progress of CAN interface transmission module
Illustrate, illustrates signal transmission and the conversion between CAN protocol and vehicle-mounted Ethernet protocol.
Vehicle-mounted Ethernet transmission module is for being unpacked and/or being organized packet, CAN to the signal for meeting vehicle-mounted Ethernet protocol
Transmission module is used to unpack to the signal for meeting CAN protocol/and/or group wrap, and with vehicle-mounted Ethernet transmission module and
CAN transmission module communicates the mapping table of connection, between the signal for signal and CAN protocol to vehicle-mounted Ethernet protocol
It mutually converts and is decoded, mapping table includes the Message Address Recognition of CAN address identifier code (CAN ID) and vehicle-mounted Ethernet
Code (Message ID) correspondence mappings table.
Vehicle-mounted ethernet gateway sends the excessively as follows of signal to CAN network: the transmission of vehicle-mounted ethernet gateway based on vehicle-mounted
The signal of Ethernet first passes around vehicle-mounted Ethernet interface and is transmitted to module converter chip, and then vehicle-mounted Ethernet transmission module is pressed
It is unpacked according to vehicle-mounted Ethernet protocol, unpacking process includes to the letter transmitted according to vehicle-mounted Ethernet protocol received
It number is parsed and isolates message address identification code (Message ID) and load signal (paylaod), then call mapping
Table, parsing are transferred to for the corresponding CAN ID of Message ID, and by CAN ID and load signal after parsing with CAN
Transmission module, CAN transmission module pass signal through CAN interface after being packaged according to CAN protocol to CAN ID and load signal
It is defeated to CAN network or car-mounted terminal with CAN interface or microphone module etc..
The signal of CAN network transmission is transmitted to the excessively as follows of vehicle-mounted ethernet gateway: as car-mounted terminal will by CAN interface
CAN signal is transferred to vehicle-mounted Ethernet interface conversion module, and then the CAN transmission module in module converter chip is assisted according to CAN
View is unpacked, and unpacking process includes to being parsed according to the signal that CAN protocol is transmitted of receiving and isolating CAN
Address identifier code (CAN ID) and load signal (paylaod), then call mapping table, parse for CAN ID to
Message ID, and the Message ID after parsing is transferred to vehicle-mounted Ethernet transmission module, vehicle-mounted ether with load signal
Message ID and load signal are packaged and are transmitted to information by vehicle-mounted Ethernet interface vehicle-mounted by net transmission module
Ethernet network.
Embodiment five
The present invention also provides a kind of car entertainment devices comprising distributed locomotive audio processing system above-mentioned is realized
Distributed locomotive audio-frequency processing method above-mentioned, reaches the treatment effect of present invention, details are not described herein.
Although the invention has been described by way of example and in terms of the preferred embodiments, but it is not for limiting the present invention, any this field
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair
Bright technical solution makes possible variation and modification, therefore, anything that does not depart from the technical scheme of the invention, and according to the present invention
Technical spirit any simple modifications, equivalents, and modifications to the above embodiments, belong to technical solution of the present invention
Protection scope.
Claims (19)
1. a kind of distributed locomotive audio processing system, which is characterized in that including one or more first generic modules, one or more
A second generic module, one or more third generic modules, vehicle-mounted ethernet gateway；
First generic module includes at least off-board Ethernet interface or vehicle-mounted Ethernet interface, control chip, the second class mould
Block includes at least off-board Ethernet interface or vehicle-mounted Ethernet interface, control chip, and third generic module includes at least off-board
Ethernet interface or vehicle-mounted Ethernet interface, control chip, power amplifier chip；
When first generic module, the second generic module, third generic module include vehicle-mounted ethernet interface module, first kind mould
Block, the second generic module, third generic module by vehicle-mounted Ethernet interface through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway into
Row electrical connection；
Or when first generic module, the second generic module, third generic module only include off-board ethernet interface module, first
Generic module, the second generic module, third generic module are converted by off-board Ethernet interface with corresponding vehicle-mounted Ethernet interface
Module is electrically connected and is electrically connected through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway；
First generic module, the second generic module, third generic module independent can handle and be respectively received signal.
2. a kind of distributed locomotive audio processing system as described in claim 1, which is characterized in that first generic module or
Off-board Ethernet interface in second generic module or third generic module include at least CAN interface, LIN interface, MOST interface,
One of FlexRay interface.
3. a kind of distributed locomotive audio processing system as described in claim 1, which is characterized in that first generic module is
On-vehicle host, second generic module are sound source module, and the third generic module is sound output module；
Control command is sent to sound source module, sound by vehicle-mounted ethernet gateway by human-computer interaction interface by the on-vehicle host
Sound output module, and receive feedback command；
The sound source module carries out the transmitting-receiving of audio signal by vehicle-mounted ethernet gateway, carries out control command with on-vehicle host and connects
It receives and/or feeds back.
4. a kind of distributed locomotive audio processing system as described in claim 1, which is characterized in that further include the 4th class mould
Block, the 4th generic module include at least the digital signal processing chip, control chip and ether for being applied to sound effect algorithms processing
Network interface, the 4th generic module are electrically connected by Ethernet interface and through vehicle-mounted industry ethernet and vehicle-mounted ethernet gateway；
The digital signal processing chip includes DSP digital signal processing chip or FPGA digital signal processing chip or special ASIC
With one of digital signal processing chip.
5. a kind of distributed locomotive audio processing system as claimed in claim 3, which is characterized in that further include the 4th class mould
Block, the 4th generic module include at least the digital signal processing chip, control chip and ether for being applied to sound effect algorithms processing
Network interface, the 4th generic module and by Ethernet interface and by Ethernet interface are electrically connected through vehicle-mounted industry ethernet；
The digital signal processing chip includes DSP digital signal processing chip or FPGA digital signal processing chip or special ASIC
With one of digital signal processing chip；
4th generic module is audio effect processing module, is handled applied to the audio signal received, and will be after processing
Audio signal transmission to on-vehicle host or sound output module；
Control command is sent to audio effect processing mould by vehicle-mounted ethernet gateway by human-computer interaction interface by the on-vehicle host
Block, and receive feedback command；
The audio effect processing module carries out the transmitting-receiving of audio signal by vehicle-mounted ethernet gateway, carries out control life with on-vehicle host
It enables and receives and/or feed back.
6. a kind of distributed locomotive audio processing system as claimed in claim 3, which is characterized in that audio signal is through source of sound mould
Block is based on vehicle-mounted industry ethernet and is transferred to vehicle-mounted ethernet gateway, monitors and processes equipment access by vehicle-mounted ethernet gateway
Ethernet completes internetwork data forwarding and condition managing；
On-vehicle host controls transmission and the Correlation method for data processing of the audio signal of sound source module.
7. a kind of distributed locomotive audio processing system as claimed in claim 3, which is characterized in that its described on-vehicle host is extremely
Few includes the volume setting component, sound field setting component, audio setting component being in communication with each other.
8. a kind of distributed locomotive audio processing system as claimed in claim 3, which is characterized in that the sound source module is at least
Including microphone module, radio receiver module, multimedia music and one of speech recognition and control module.
9. a kind of distributed locomotive audio processing system as claimed in claim 3, which is characterized in that the sound output module
Including at least one of loudspeaker module, handset module and other playback modules.
10. a kind of distributed locomotive audio processing system as claimed in claim 3, which is characterized in that the on-vehicle host control
Make transmission, the audio mixing, pattern switching of each sound source module, the function that the audio effect processing of the sound source module is equipped with by each sound source module
Rate enhanced processing chip processing is completed.
11. a kind of distributed locomotive audio processing system as claimed in claim 5, which is characterized in that the on-vehicle host control
Make transmission, the audio mixing, pattern switching of each sound source module, the function that the audio effect processing of the sound source module is equipped with by each sound source module
Rate enhanced processing chip processing is completed or is completed by audio effect processing module.
12. a kind of distributed locomotive audio processing system as claimed in claim 9, which is characterized in that the loudspeaker module
Active device including being provided with PCBA, wherein control chip, power amplification IC chip and Ethernet interface are set to PCBA
On；
The control chip is used to control power-on and power-off and the work-based logic of PCBA；
Power amplification IC chip is applied to carry out digital-to-analogue conversion and EQ tuning to audio signal, can will treated digital audio
Signal is converted into analog signal, then the output of loudspeaker device progress sound is pushed by power amplification；
Vehicle-mounted Ethernet interface, which is applied, receive to digital audio and video signals and the digital signal after EQ tuning is back to vehicle
Ethernet network is carried to refer to for other nodes.
13. a kind of distributed locomotive audio processing system as claimed in claim 12, which is characterized in that the Yang Sheng device module
In control chip top sealing device have front end assemblies, be packaged with EQ debugging component and multiple sound output precision on power chip；
Front end assemblies, to receive Ethernet digital audio and control signal；
EQ debugs component, to carry out digital-to-analogue conversion and signal amplifying function；
Output precision has multiple sound output function.
14. a kind of distributed locomotive audio processing system as described in claim 1, which is characterized in that the vehicle-mounted Ethernet
Interface conversion module includes module converter chip, conversion interface, vehicle-mounted Ethernet interface, and the module converter chip, conversion connect
Mouth, vehicle-mounted Ethernet interface are installed on circuit board and can communicate with each other.
15. a kind of distributed locomotive audio processing system as claimed in claim 14, which is characterized in that the conversion interface
Type with need it is identical to the interface type of connection module or compatible；
The conversion interface type includes one of CAN interface, LIN interface, MOST interface, FlexRay interface.
16. a kind of distributed locomotive audio processing system as claimed in claim 14, which is characterized in that the module converter core
Piece is converted into standard compliant vehicle-mounted ethernet signal for realizing by the reference format signal of the off-board Ethernet received
It is transmitted by vehicle-mounted Ethernet；
Or the reference format signal that the signal of the reference format of vehicle-mounted Ethernet is converted into off-board Ethernet is transmitted.
17. a kind of distributed locomotive audio processing system as claimed in claim 16, which is characterized in that the module converter core
The conversion mapping table that piece passes through between the various criterion agreement being pre-loaded with is converted, and data format conversion processing passes through mould
Processor on block conversion chip calls mapping table to carry out.
18. any distributed locomotive audio processing system as described in claim 1 to 17, which is characterized in that it is described it is vehicle-mounted with
Too net gateway includes the expansible communication interface of multichannel.
19. a kind of car entertainment device, which is characterized in that including the distributed locomotive any one of as described in claim 1 to 18
Audio processing system.
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| CN201910344286.8A CN110136753A (en) | 2019-04-26 | 2019-04-26 | Distributed locomotive audio processing system and car entertainment device |
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| CN201910344286.8A CN110136753A (en) | 2019-04-26 | 2019-04-26 | Distributed locomotive audio processing system and car entertainment device |
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