CN208509122U - Audio processing host and conference system for conference system - Google Patents
Audio processing host and conference system for conference system Download PDFInfo
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- CN208509122U CN208509122U CN201821002841.6U CN201821002841U CN208509122U CN 208509122 U CN208509122 U CN 208509122U CN 201821002841 U CN201821002841 U CN 201821002841U CN 208509122 U CN208509122 U CN 208509122U
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Abstract
The utility model discloses a kind of audio processing hosts and conference system for conference system, wherein audio processing host includes: car audio bus module, audio input interface, audio output interface and audio processing modules；The input terminal of car audio bus module is connect with audio input interface, and the output end of car audio bus module and the input channel of audio processing modules connect, and the output channel of audio processing modules is connect with audio output interface；Audio processing modules are used to make the audio signal in input channel stereo process, and audio signal is exported via output channel by treated.The car audio bussing technique for being applied to automotive field is diverted to conference system technical field, A by the utility model2B technology is while significantly reducing conference system whole implementation cost and complexity, additionally it is possible to the effectively reliability of enhancing system.
Description
Technical field
The utility model relates to audio signal processing technique field more particularly to a kind of audio processing hosts for conference system
And conference system.
Background technique
Participant image, sound etc. are exported to local and remote by communication means such as audio-videos and are attended a meeting now by conference system
?.Since all kinds of meetings have different needs participation number, site condition and other ancillary equipments, meeting is often led to
Conference system actual transmissions, show audio, video data when there are various technical problems, so conference system is also promoted constantly to carry out
Technology adjustment and improvement.
By taking audio transmission as an example, the audio processing host of conference system is used for used by traditional conference system, for
The transmission of audio signal controls and handles relatively easy, and scalability and reliability are bad, the prior art has at least the following problems:
1) when long distance transmission (such as more than 50 meters), signal-to-noise ratio, channel separation degree and frequency response characteristic etc. can be passed
Defeated line influence, sound quality are then deteriorated.
2) Electro Magnetic Compatibility is poor caused by interfering in convention system because of all kinds of large-scale electric equipments.
3) when acquiring multiple audio input signals using multiplexer channel, every road input is required to a pair of independent transmission line
Road causes transmission cable overweight excessively miscellaneous, not only increases implementation cost and increases system failure rate.
Utility model content
In view of the above problems, the object of the present invention is to provide a kind of audio processing host for conference system and
Conference system innovatively combines car audio bussing technique with conference system, overcomes conference system distinctive many with this
Technical problem, as long distance transmission leads to lower tone, cable caused by the electromagnetic interference and multi input in convention place
Problem numerous and jumbled, system reliability is bad.
The technical solution adopted in the utility model is as follows:
A kind of audio processing host for conference system, comprising: car audio bus module, audio input interface, sound
Frequency output interface and audio processing modules；
The input terminal of the car audio bus module is connect with the audio input interface, the car audio bus mould
The output end of block is connect with the input channel of the audio processing modules, the output channel of the audio processing modules and the sound
The connection of frequency output interface；
The audio processing modules are used to make the audio signal in the input channel stereo process, and by treated
Audio signal is exported via the output channel.
Optionally, the audio processing modules include switch matrix unit, and the switch matrix unit is used for will be described in the road n
Output channel described in input channel and 1 tunnel forms the Audio Matrix of n × 1, and selects at least sound in the input channel all the way
Frequency signal is sent to the output channel；Wherein n is the natural number greater than 0.
Optionally, the output end of the car audio bus module is connect by I2S interface with the input channel.
Optionally, the audio processing host further includes data storage cell and network interface；
The data storage cell is connect with the audio processing modules and the network interface respectively.
Optionally, the audio processing host further includes function debugging unit and data communication serial ports；
The function debugging unit is connect with the audio processing modules and the data communication serial ports respectively.
Optionally, the audio processing host further includes being connected between the output channel and the audio output interface
D/A converter module, and the output channel is connect by I2S interface with the D/A converter module.
Optionally, the audio processing host further includes power module and peripheral hardware power supply interface；
The power module is for exporting electric energy to the audio processing modules and the peripheral hardware power supply interface respectively.
A kind of conference system, including pick up facility and public address equipment further include the above-mentioned audio processing for conference system
Host；
The pick up facility is connect with the audio input interface, and the public address equipment and the audio output interface connect
It connects.
Optionally, the conference system further includes server, and the server is for receiving the audio processing modules hair
The audio data sent, and the audio data is subjected to text conversion and/or data storage.
Optionally, the conference system further includes host computer, at the audio of the host computer and the audio processing host
Manage module connection；
The host computer is used to debug the function of the audio processing host and/or the fortune of the setting audio processing host
Row parameter.
The utility model breaks conventional thought, will be applied to the car audio bussing technique (Automotive of automotive field
Audio Bus, A2B) it is diverted to conference system field.It is total by the way that car audio is arranged in the audio processing host of conference system
Line (A2B) module, both can effectively ensure the fidelity of long distance transmission sound intermediate frequency signal, the electricity of acceptable effectively lifting system
Magnetic compatibility can be simplified substantially especially under the premise of guaranteeing that conference system itself function is not lost by A2B technology
Number of cables and weight, to reduce system whole implementation cost and while complexity, can effectively enhance system can
By property.
Detailed description of the invention
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type is further described, in which:
Fig. 1 is the schematic diagram of the embodiment of the audio processing host provided by the utility model for conference system；
Fig. 2 is the schematic diagram of another embodiment of the audio processing host provided by the utility model for conference system；
Fig. 3 is the signal of a preferred embodiment of the audio processing host provided by the utility model for conference system
Figure；
Fig. 4 is the signal of the another preferred embodiment of the audio processing host provided by the utility model for conference system
Figure；
Fig. 5 is the schematic diagram of the embodiment of conference system provided by the utility model；
Fig. 6 is the schematic diagram of the preferred embodiment of conference system provided by the utility model.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and cannot be construed to the utility model
Limitation.
The particular technology defect that the utility model occurs for existing conference system in application, provides one kind and is used for
The embodiment of the audio processing host of conference system, as shown in Figure 1, the embodiment includes at least car audio bus module, sound
Frequency input interface, audio output interface and audio processing modules, wherein connection relationship can be car audio bus module
Input terminal is connect with audio input interface, and output end is then connect with the input channel of audio processing modules, and at the audio
The output channel of reason module is connect with the audio output interface, and above-mentioned connection relationship is shown in the utility model attached drawing with arrow
Anticipate but be not limited to the transmission direction of audio signal or data packet.It should be noted that be the utility model focus on provide audio at
The electrical hardware for managing host and conference system configures reference, therefore not to the external form or machinery of audio processing host and conference system
Structure etc. defines.
It connects above, the car audio bus module is refered in particular in the utility model as Automotive Audio Bus
(A2B) module；Specifically, A2B technology is that only need can using one group of unshielded twisted pair for one kind for being released by ADI company
With the Digital Automobile audio-frequency bus technology in up to 32 channels of realization theory maximum 50Mbps bandwidth and transmitted in both directions, not only property
Can be brilliant, and route simplifies significantly and software design is more simple.In actual operation, A2B module described in the present embodiment
The AD24XX serial transceiver of ADI company can be used, and energy can be carried according to the node of the AD24 transceiver of different model
Power configures one or more A2B module is as host node, and the audio input interface for being previously used for connection pickup peripheral hardware then can be with
As A2The input access interface of the slave node (pick up facility) of B module.For example, independent more than more than 20 tunnels in order to adapt to
The medium-and-large-sized meeting of microphone input demand, audio processing host provided in this embodiment can be set three AD2410 modules and make
For three road A2B host node, every road host node then can connect eight tunnel separate microphone input signals, therefore aforementioned audio input connects
Mouth can also correspondingly be split as three INPUT interfaces, and each INPUT interface can connect eight microphones.Here it needs to point out
It is A2B module is digital audio and video signals bus module, therefore in the specific implementation, audio input preferably uses digital audio defeated
Enter equipment, such as digital microphone or digital audio-frequency player etc., or can also be by the analog audio signal of acquisition via interior
Set or external analog-digital commutator carry out digital conversion after connect again with the input terminal of A2B module.
Aforementioned audio processing module can be using conventional digital audio processor, for example, by using the embedded of ARM framework
Audio processing modules.For meeting actual demand, it is main which can pay the utmost attention to it in type selecting
Function first is that make stereo process to the audio signal in aforementioned input channel, and will treated audio signal via aforementioned defeated
Channel exports out.For example, can be by the on-demand audio mixing of independent input audio at least 20 tunnels, and exported by number format all the way to audio
Output interface.Audio output interface designated herein can refer to one or several OUTPUT interfaces, be used to connect power amplifier or
The public address equipments such as active audio amplifier.Certainly, it will be appreciated by persons skilled in the art that the function of audio processing modules is not limited to
It states, can also have the function of the audio data of storage input, or audio data is forwarded to by other output interfaces
The functions such as other auxiliary peripheral hardwares, and it can also support high sampling rate audio signal in other embodiments, such as can prop up
It holds audio input output to sample up to 192K/24Bit, this is not limited in the present embodiment.
Referring again to shown in Fig. 1, A2B module can pass through more reliable I with audio processing modules in actual operation2S
Interface connection, specifically, the output end of A2B module is via the I being equipped with thereon2S interface and has I2S is accessed at the audio of standard
The input channel for managing module is connected.I2S (Inter-IC Sound) technology is PHILIPS Co. between digital audio-frequency apparatus
Audio data transmission and formulate a kind of bus standard, both defined hardware interface specification, and alsied specify digital audio number
According to format, the technology is more mature at present, and when implementation can refer to the prior art, and it will not go into details herein.
The utility model is directed to the particular technology problem of conference system, innovatively breaks technical field boundary line, will be applied to
The car audio bussing technique of automotive field is diverted to conference system field.By being set in the audio processing host of conference system
Car audio bus module is set, both can effectively ensure the fidelity of long distance transmission sound intermediate frequency signal, can also effectively be promoted
The Electro Magnetic Compatibility of system can be with by A2B technology especially under the premise of guaranteeing that conference system itself function is not lost
Substantially reducing cables quantity and weight, to can effectively enhance while reducing system whole implementation cost and complexity
The reliability of system.
In addition, the utility model is directed to the stereo process function of audio processing modules, one is provided based on aforementioned implementation
The preferred embodiment of example, as shown in Fig. 2, aforementioned audio processing module can specifically include one or more in the present embodiment
Switch matrix unit, wherein output channel described in input channel described in the road n and 1 tunnel can be formed n × 1 by switch matrix unit
Audio Matrix, wherein n is the natural number greater than 0；I.e. the road n input channel connects to form one with 1 tunnel output channel in intersection
A digital switch matrix, and then the audio signal (packets of audio data) in one or more input channel is selected to send according to demand
To output channel, such as one or more audio-sources of multipoint conference are combined into an audio stream and are sent to external recipient.Into
One step, in the embodiment shown in Figure 2, the utility model additionally provides the power supply configuration reference about audio processing host,
And electrical connection is illustrated with solid line.Specifically, audio processing host may include one or more power modules and outer
If power supply interface, wherein the main function of power module is to audio processing modules and peripheral hardware power supply interface output electric energy.In reality
In the operation of border, power module can be connect by power switch with commercial power interface, and commercial power interface is for connecting in Conference Room
Alternating current；By taking dual-power module as an example, the input terminal of main power source module can be electrically connected by power switch with external communication city, main
Alternating current is converted to DC low-voltage electric (such as 12V/0.4A) and exported to secondary power module and peripheral hardware power supply and connect by power module
Mouthful, wherein secondary power module is used to power for power device in aforementioned audio processing module and other hosts, and peripheral hardware supplies
Electrical interface then can be used for for external equipment power supply, for example, power supply such as pick up facility.Certainly, power module can also be according to reality
The efficient photovoltaic module that border demand uses the rechargeable battery of such as relatively high power or is arranged on host, and in dual power supply mould
In block embodiment, secondary power module can also use chargeable UPS.Such as it is next in Conference Room power supply nominal situation
Level power supply module only as power supply forwarding channel, turns the low tension that main power supply module exports to be supplied to each module and interface etc.；One
Denier Conference Room abnormal electrical power supply, the secondary power module that can continually and steadily power, which then plays, prevents audio processing host unexpected
The effect of power-off.
Based on previous embodiment and its preferably, the utility model, which provides other two kinds from two angles respectively, preferably to be implemented
Scheme, two angles, which refer to from audio processing host, externally interacts level and audio processing host audio signal output level；
It is noted that each technical characteristic in each embodiment both can be single according to the demand and technical implementation way of conference system
It, can also will be in multiple technical characteristic integrated application Mr. Yu type products in multiple embodiments solely using in Mr. Yu's type product.
Wherein, a preferred embodiment is as shown in figure 3, in the present embodiment, audio processing host at least further includes number
According to storage unit, function debugging unit, network interface, data communication serial ports and/or universal serial bus (USB) interface.
Specifically, the data storage cell can respectively with aforementioned audio processing module and network interface and/or USB interface
Connection, and function debugging unit can then be connect with aforementioned audio processing module and data communication serial ports respectively.Data storage is single
The effect of member is the audio data of storage input, and is exported data via network interface and/or USB interface according to external demand
To peripheral hardware；Function debugging unit then can be various functions and operating parameter for debugging audio processing host etc., in reality
In operation, it can be connect by peripheral hardware with the data communication serial ports and pass through the function debugging unit and be achieved.It should be noted
It is that aforementioned network interface can refer to wired and or wireless network access device, such as Ethernet access port and/or wireless
Network interface card etc.；Aforementioned data communication serial ports can then select such as RS232 and/or RS485；Also, data storage cell and function
Debugging unit can be arranged independently of audio processing modules as shown in the figure, can also preferably consider in other modes by data
Storage unit, function debugging unit and aforementioned audio processing module are integrated in one.
Another preferred embodiment is as shown in figure 4, in the present embodiment, audio processing host at least further includes that digital-to-analogue turns
Change the mold block, amplifier and the gain adjustment device for adjusting output volume.
Specifically, the output channel of aforementioned audio processing module is successively via D/A converter module and amplifier and the sound
The connection of frequency output interface, and gain adjustment device is then connect with amplifier.It is needed for reality in view of Conference Room and aforementioned
The specific type selecting of audio processing modules, this preferred embodiment are believed with the output channel output digital audio of aforementioned audio processing modules
Illustrate the audio signal output process of audio processing host: the number for first audio mixing being exported via D/A converter module for number
Audio signal switch to can access amplifier analog audio signal, then by amplifier carry out fidelity enhanced processing after, output to use
It amplifies the audio output interface of peripheral hardware in connection, and gain adjustment device pair can also be passed through during output audio signal
Output volume carries out big minor adjustment.In actual operation, audio processing mould can preferably be passed through according to the type selecting of audio processing modules
I on block2S interface outputs it channel and is connected with D/A converter module；Furthermore for the type selecting of gain adjustment device, then may be used
With reference to structures such as existing knobs, this utility model is not limited.
In summary each embodiment for the audio processing host of conference system, the utility model additionally provide one kind
Using the embodiment of the conference system of above-mentioned audio processing host, as shown in figure 5, the conference system specifically included at audio
Manage the pick up facility of the audio input interface connection of host (shown in frame), and the audio output interface with audio processing host
The public address equipment of connection.Pick up facility can refer to microphone or audio player in Conference Room etc., and due to using
A2B technology, thus this conference system is had the ability according to the required quantity for increasing pick up facility, and between each pick up facility only
The audio input interface of audio processing host, certainly, A as previously mentioned need to be connected serially to using a unshielded twisted pair2B
The type selecting of module determines number of nodes, such as selects AD2410 module, then can be connected serially to one by every eight pick up facilities
The mode of the port INPUT；For public address equipment, then it can refer to the peripheral hardwares such as power amplifier or the speaker in Conference Room.
Skilled person will appreciate that the embodiment of above-mentioned conference system is most basic conference system framework, thus this
Utility model additionally provides one kind and is preferred embodiment, as shown in fig. 6, further including service in the embodiment of this conference system
Device and host computer.
Wherein, the effect of server be receive audio processing modules send audio data, and by the audio data into
Row text conversion and/or data storage.Such as it needs conference content retaining record with written form in certain meetings or need
To be issued with written form to the public etc., thus the server for being used for composition notebook conversion can be obtained into sound from audio processing host
Frequency evidence.By taking the embodiment being mentioned above as an example, the audio processing modules of audio processing host can be by the audio number of input
It is kept according to by data storage cell, and server then can be connect and be obtained with data storage cell by aforementioned network interface
Get required audio data.Certainly, the flow model of data storage can also be in this way, when needing to back up the audio content of meeting
Or when remaining subsequent processing, server can also be by needed for having and getting in the audio processing host of aforementioned USB interface
Audio data.It should be noted that in the specific implementation process, the data transmission interface of server and audio processing host is also unlimited
In network interface or USB interface, those skilled in the art can make accordingly to expand under the inspiration of the utility model.
It connects above, host computer can be connect with the audio processing modules of audio processing host, for debugging audio processing
The function of host and/or the operating parameter that audio processing host is set.Such as before a conference begins by technical staff according to reality
Number of participants, cable apart from situations such as, to the number of active lanes of audio processing host, channel gain and sample rate in host computer
Etc. being configured and debug.By taking the embodiment being mentioned above as an example, the audio processing modules and function tune of audio processing host
Unit is tried to be connected, host computer can communicate serial ports or USB interface by aforementioned data and function debugging unit establishes connection, and
Thus the operating parameter of audio processing host correlation module is set and each function of audio processing host is debugged.Equally need
Illustrate, in the specific implementation process, it is logical that the data transmission interface of host computer and audio processing host is not limited to aforementioned data
Serial ports or USB interface are interrogated, those skilled in the art can make accordingly to expand under the inspiration of the utility model.
The structure, features, and effects of the present invention is described in detail based on the embodiments shown in the drawings, but
The above is only the preferred embodiment of the present invention, needs to explain, involved by above-described embodiment and its preferred embodiment
Technical characteristic, those skilled in the art can not depart from, not change the mentality of designing and technical effect of the utility model
Under the premise of, reasonably combination collocation is at a variety of equivalent schemes；Therefore, the utility model does not implement model with restriction shown in drawing
It encloses, all changes in accordance with the concept of the utility model or equivalent example modified to equivalent change, still without departing from saying
When bright book is with covered spirit is illustrated, it should be within the protection scope of the present utility model.
Claims (10)
1. a kind of audio processing host for conference system characterized by comprising car audio bus module, audio are defeated
Incoming interface, audio output interface and audio processing modules；
The input terminal of the car audio bus module is connect with the audio input interface, the car audio bus module
Output end is connect with the input channel of the audio processing modules, and the output channel of the audio processing modules and the audio are defeated
Outgoing interface connection；
The audio processing modules are used to make stereo process to the audio signal in the input channel, and will treated audio
Signal is exported via the output channel.
2. the audio processing host according to claim 1 for conference system, which is characterized in that the audio processing mould
Block includes switch matrix unit, and the switch matrix unit is for forming input channel described in the road n and output channel described in 1 tunnel
The Audio Matrix of n × 1, and the audio signal at least all the way in the input channel is selected to be sent to the output channel；Wherein n
For the natural number greater than 0.
3. the audio processing host according to claim 1 for conference system, which is characterized in that the car audio is total
The output end of wire module passes through I2S interface is connect with the input channel.
4. the audio processing host according to claim 1 for conference system, which is characterized in that the audio processing master
Machine further includes data storage cell and network interface；
The data storage cell is connect with the audio processing modules and the network interface respectively.
5. the audio processing host according to claim 1 for conference system, which is characterized in that the audio processing master
Machine further includes function debugging unit and data communication serial ports；
The function debugging unit is connect with the audio processing modules and the data communication serial ports respectively.
6. the audio processing host according to claim 1 for conference system, which is characterized in that the audio processing master
Machine further includes the D/A converter module being connected between the output channel and the audio output interface, and the output channel
Pass through I2S interface is connect with the D/A converter module.
7. the audio processing host according to claim 1 for conference system, which is characterized in that the audio processing master
Machine further includes power module and peripheral hardware power supply interface；
The power module is for exporting electric energy to the audio processing modules and the peripheral hardware power supply interface respectively.
8. a kind of conference system, including pick up facility and public address equipment, which is characterized in that further include any one of claim 1~7
The audio processing host for conference system；
The pick up facility is connect with the audio input interface, and the public address equipment is connect with the audio output interface.
9. conference system according to claim 8, which is characterized in that the conference system further includes server, the clothes
Business device is used to receive the audio data that the audio processing modules are sent, and by the audio data carry out text conversion and/or
Data storage.
10. conference system according to claim 8, which is characterized in that the conference system further includes host computer, it is described on
Position machine is connect with the audio processing modules of the audio processing host；
The host computer is used to debug the function of the audio processing host and/or the operation ginseng of the setting audio processing host
Number.
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| CN201821002841.6U CN208509122U (en) | 2018-06-27 | 2018-06-27 | Audio processing host and conference system for conference system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115102929A (en) * | 2021-03-03 | 2022-09-23 | 阿里巴巴（中国）有限公司 | Audio processing system, middle layer chip and audio processing equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115102929A (en) * | 2021-03-03 | 2022-09-23 | 阿里巴巴（中国）有限公司 | Audio processing system, middle layer chip and audio processing equipment |
| CN115102929B (en) * | 2021-03-03 | 2024-02-13 | 阿里巴巴（中国）有限公司 | Audio processing system, intermediate layer chip and audio processing device |
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