CN209250870U - A kind of network digital Audio Matrix - Google Patents
A kind of network digital Audio Matrix Download PDFInfo
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- CN209250870U CN209250870U CN201821595061.7U CN201821595061U CN209250870U CN 209250870 U CN209250870 U CN 209250870U CN 201821595061 U CN201821595061 U CN 201821595061U CN 209250870 U CN209250870 U CN 209250870U
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Abstract
The utility model discloses a kind of network digital Audio Matrix, including PC terminal, main control module, audio processing modules and audio conversion module, it is connected between PC terminal and main control module by network communication, audio processing modules are made of several I O process cards, it is connected between each I O process card and main control module using point-to-point mode, is connected between audio processing modules and main control module by CPCI interface.The utility model uses numerous advantages such as IC technology, network technology, Digital Signal Processing, with small in size, high-efficient, speed is fast, it is easy to operate, stability is high, it can be achieved that the advantages of network monitoring, and, the utility model is equipped with analog audio interface, digital audio interface and network audio interface, suitable for various types of audio signals, and can be applied widely by network implementations long distance transmission.
Description
Technical field
The utility model relates to a kind of network digital Audio Matrixs, belong to network and data communication field.
Background technique
Audio Matrix is widely used in all kinds of sound equipment sound reinforcement systems, such as conference system, profession performance sound system, public wide
System etc. is broadcast, conventional audio matrix generally does matrix majorization using extensive analog switch device, and there are functions, and simple, performance refers to
Mark disadvantage poor, that circuit is complicated.The audio transmission system of early stage station television platform will be simulated by special audio cable
Audio signal concentration of transmissions carries out the switching of signal to sound console or jack panel.The route handoff of this matrix is by many intersections
Point-like electron switching circuit composition.Under system allotment, by controlling the on-off in a certain crosspoint, corresponding input channel and output are logical
Road will be connected to or be disconnected.The Audio Matrix volume that this mode exchanges is big, and low efficiency, speed is slow, and the service life is short, function list
One, and presently used character matrix is typically provided with analog audio interface and digital audio interface, is only applicable to small range region
It uses, is unable to satisfy the demand used over long distances.
Summary of the invention
The object of the invention is in order to solve the above problems existing in the present technology, to provide a kind of network digital sound
Frequency matrix is equipped with network audio interface, can be directly connected to interchanger, it can be achieved that long range audio transmission.
The technical solution of the utility model is: a kind of network digital Audio Matrix, including PC terminal, master control molding
Block, audio processing modules and audio conversion module are connected between the PC terminal and main control module by network communication, audio
Processing module is made of several I O process cards, is connected between each I O process card and main control module, the audio processing
Connected between module and main control module by CPCI interface, the audio conversion module include analogue audio frequency conversion module card,
AES audio transition card and network audio transition card, each audio transition card respectively correspond one piece of I O process card, each audio conversion
It is connected between card and corresponding I O process card by CPCI interface, the network audio conversion module includes digital audio net
Network processor, flash memory, voltage-controlled oscillating circuit, the first ethernet controller, the second ethernet controller, the first RJ-45
Connector and the second RJ-45 connector, the Network Digital Audio Processor use CS181012 chip, Network Digital Audio Processor
It is connected with CPCI interface, the Network Digital Audio Processor is connected with voltage-controlled oscillating circuit, the voltage-controlled oscillating circuit
It is connected with CPCI interface, first ethernet controller and the second ethernet controller are and Network Digital Audio Processor
It is connected, the second RJ-45 connector is connected with the first ethernet controller, the second RJ-45 connector and the first ethernet controller
It is connected, the first ethernet controller and the second ethernet controller and Network Digital Audio Processor are and flash memory
It is connected.
Further, above-mentioned network digital Audio Matrix, in which: the main control module includes the first Audio Matrix master control
Card and the second Audio Matrix main control card pass through CPCI interface between the first Audio Matrix main control card and the second Audio Matrix main control card
It is connected.
Further, above-mentioned network digital Audio Matrix, in which: between the I O process card and the first matrix main control card,
It is connected between IO processing the second matrix main control card of engaging using point-to-point mode
Further, above-mentioned network digital Audio Matrix, in which: the AES audio transition card includes four pieces of SRC4382 bis-
To audio conversion chip and power module, corresponding AES audio input end and the output all the way of every piece of SRC4382 audio conversion chip
End, is connected with impedance matching isolation circuit between each road AES audio input end and output end and corresponding audio conversion chip,
Each piece of SRC4382 two way audio conversion chip and power module are connected with CPCI interface, and the power module passes through
CPCI interface is powered to SRC4382 two way audio conversion chip.
The utility model is outstanding to be had the technical effect that: the utility model uses IC technology, network technology, number
Numerous advantages such as signal processing technology, have small in size, and high-efficient, speed is fast, easy to operate, and stability is high, can be real
The advantages of existing network monitoring, also, the utility model connects equipped with analog audio interface, digital audio interface and network audio
Mouthful, it is suitable for various types of audio signals, and can be applied widely by network implementations long distance transmission.
Detailed description of the invention
Fig. 1 is the utility model network digital Audio Matrix schematic diagram；
Fig. 2 is AES audio conversion card architecture schematic diagram；
Fig. 3 is network audio transition card configuration diagram；
In figure, the meaning of each appended drawing reference are as follows: 1-main control module, the 11-the first Audio Matrix main control card, 12-the second
Audio Matrix main control card, 2-audio processing modules, 3-audio conversion modules, 31-analogue audio frequency transition cards, 32-AES audios
Transition card, 33-network audio transition cards, 331-Network Digital Audio Processors, 332-Flash storage cards, 333-is voltage-controlled
Oscillating circuit, the 334-the first ethernet controller, the 335-the second ethernet controller, the 336-the one RJ-45 interface,
337-the two RJ-45 interface, 4-CPCI interfaces, 5-PC terminals.
Specific embodiment
Below by way of attached drawing combination specific embodiment, the utility model is described in further details.
As shown in Figure 1, the utility model network digital Audio Matrix includes PC terminal 5, main control module 1, audio processing
Module 2 and audio conversion module 3, are connected between PC terminal 5 and main control module 1 by network communication, and main control module includes
First Audio Matrix main control card 11 and the second Audio Matrix main control card 12, the first Audio Matrix main control card 11 and the second Audio Matrix
It is connected between main control card 12 by CPCI interface 4, audio processing modules 2 are made of several I O process cards, each I O process
It is used between card and the first Audio Matrix main control card 11, between each I O process card and the second Audio Matrix main control card 12 point-to-point
Mode connect, specifically, CPCI interface 4 can be set between audio processing modules 2 and main control module 1, so that at audio
It is connected between reason module 2 and main control module 1 by CPCI interface.Audio conversion module 3 includes analogue audio frequency conversion module card
31, AES audio transition card 32 and network audio transition card 33, each audio transition card respectively corresponds one piece of I O process card, each
It is connected between audio transition card and corresponding I O process card by CPCI interface.Each 3 card of audio conversion is equipped with 4 road sounds
Frequency input channel and 4 road audio frequency output channels.
Specifically, settable 15 I O process cards, 5 analogue audio frequency conversion module cards, 31,5 AES audio transition cards 32
And 5 throw the net network audio transition card 33.Pass through TCP/IP network communication between PC terminal and main control module 1.
Main control module needs to realize the most basic route handoff function of Audio Matrix, and the parameter of this few route handoff
Information is then the control software from PC terminal, thus main control module need to have with PC terminal by network or other interfaces into
The ability of row communication.Secondly, the signal processing parameter etc. of audio processing modules is also all to parse client end by main control module
Command parameter after send over.Meanwhile the state of audio processing modules and audio conversion module is also needed by master control molding
Block is sent to client and shows.In addition, in order to which client can monitor certain audio signal all the way, our main control card
Module will also carry out MP3 coding to audio signal, then be sent to PC terminal by network.
First Audio Matrix main control card 11 and the second Audio Matrix main control card 12 are not only identical on hardware configuration, and
And the software program of operation is also the same.When digital audio matrix works normally, the first Audio Matrix main control card 11 and the
Two Audio Matrix main control cards 12 receive the audio signal and status information of 1 audio processing modules input simultaneously, while to client
End software is responded by the data information that network sends over, and saves the same processing parameter and status information.The
When one Audio Matrix main control card 11 exports the command processing result of client, thus by the definition of the first Audio Matrix main control card 11
When matrix main card.Although the second Audio Matrix main control card 12 is also handled the order of client, obtained processing result
Also identical with the first Audio Matrix main control card 11, but without output, be intended only as the backup of matrix main card, be defined as
The standby card of matrix at this time.Active and standby two, matrix be stuck in Audio Matrix system be not it is isolated existing each other, pass through between them
Communication is realized in the connection of CPCI backboard.At a time, if mistake occurs for the standby card discovery matrix main card working condition of matrix at this time
Accidentally, digital audio matrix can be immediately switched to matrix for card working condition.For system, due to matrix active and standby two before this
It opens control card and is constantly in same working condition, after the switching centre of Audio Matrix switches to standby card work by main card, work
Making working condition locating before state breaks down with Audio Matrix master control system will be identical.Standby card is activated at this time, holds
The task of main card is carried on a shoulder pole, realizes the seamless switching of active and standby card role, system external continues to execute and appoints just as occurring fault-free
Business, and become present standby card after original main card fault restoration substantially increases the stability and reliably of digital audio matrix
Property.
It may be from satellite reception, radio station reception, voice recording computer room, recording from the signal for being distally transmitted to Audio Matrix
Canopy, ISDN transmission or network transmission etc., these signals respectively have the spectral characteristic of oneself.In order to make to route through Audio Matrix
The signal spectrum characteristic transferred out after switching is more suitable for playing or transmit, and needs to carry out at corresponding digital signal signal
Reason.In addition, audio signal may need to do audio mixing to these sources of sound this when respectively from sound, monologue, musical instrument sound etc. is sung
Output.In order to save the audio transmission interfaces of audio processing modules and main control module, we also need 4 road IIS are stereo
Signal is converted to TDM signal.Meanwhile audio processing modules also need to manage this module and respective audio conversion module, in real time to
Master control card module reports the operating status of oneself.Above-mentioned work is completed by I O process card.
Audio transmission other than traditional Non-equilibrium Molecular Dynamics Simulation Study transmission, balance simulation transmission there are also AES/EBU, MADI,
The digital interfaces mode such as TDIF and SDI is transmitted and the networks modes such as CobraNet and HiQnet are transmitted.Digital audio matrix is wanted
Route handoff is done to audio signal, needs to send and receive audio signal in a wide variety of ways.In order to reduce digital audio
The coupling of each module of matrix improves scalability, before entering switching module, needs the input audio letter to fabric interface
Number do unitized processing, i.e., by the audio signal in need for carrying out route handoff be uniformly converted to the stereo number of IIS of standard
Word audio signal.So that we are designing audio processing modules and when main control module, it is not necessary to consider transmission come in and
The signal that will be transferred out is any type, we need to only be designed standard IIS signal.In addition, by routing
Signal after switching and audio processing can be transferred out by audio conversion module in a variety of required forms.
AD conversion module and D/A conversion module, AD conversion module and DA modulus of conversion can be used in analog audio signal transition card 31
Block is common technology, can directly be bought in the market, and also all on the books in many documents, which is not described herein again,
AES audio signal converts khaki framework as shown in Fig. 2, including 4 pieces of SRC4382 two way audio conversion chips and power supply
Module, every piece of SRC4382 audio conversion chip corresponding AES audio input end and output end all the way, each road AES audio input end and
Impedance matching isolation circuit is connected between output end and corresponding audio conversion chip, each piece of SRC4382 two way audio turns
It changes chip and power module to be connected with CPCI interface, power module is turned by CPCI interface to SRC4382 two way audio
Change chip power supply.
Network audio conversion chip framework is as shown in figure 3, include Network Digital Audio Processor 331, flash memory
332, voltage-controlled oscillating circuit 333, the first ethernet controller 334, the second ethernet controller 335, the first RJ-45 connector 336
With the second RJ-45 connector 337, Network Digital Audio Processor 331 uses CS181012 chip, Network Digital Audio Processor
331 are connected with CPCI interface, while Network Digital Audio Processor 331 is connected with voltage-controlled oscillating circuit 333, voltage-controlled concussion
Circuit is connected with CPCI interface, and voltage-controlled oscillating circuit 333 is used to receive the clock signal of digital network 331, and clock is believed
Number I O process card is conveyed to by CPCI interface, the first ethernet controller 334 and the second ethernet controller 335 with number
Word tone frequency network processing unit 331 is connected, and the second RJ-45 connector 336 is connected with the first ethernet controller 334, the 2nd RJ-
45 connectors 337 are connected with the first ethernet controller 335, the first ethernet controller 334 and the second ethernet controller 335
It is connected with flash memory 332 with Network Digital Audio Processor 331.
When using the utility model, other than it can use traditional analog audio interface and digital audio interface, also increase
Network audio interface, the delivery outlet of network audio interface and input port can be directly connected to cable, pass through cable and transmit audio letter
Number, even if control terminal and Audio Matrix can also mutually be transmitted apart from far or two Audio Matrix wide aparts by network
Audio signal, so that Audio Matrix is no longer restricted by distance, application surface is wider.
By above description as can be seen that the utility model is using IC technology, network technology, Digital Signal Processing etc.
Numerous advantages, have small in size, and high-efficient, speed is fast, easy to operate, stability it is high, it can be achieved that network monitoring it is excellent
Point, also, the utility model is suitable for various types of equipped with analog audio interface, digital audio interface and network audio interface
The audio signal of type, and can be applied widely by network implementations long distance transmission.
Certainly, the representative instance of above only the utility model, in addition to this, the utility model can also have other a variety of
Specific embodiment, all technical solutions formed using equivalent substitution or equivalent transformation all fall within the requires of the utility model protection
Within the scope of.
Claims (4)
1. a kind of network digital Audio Matrix, it is characterised in that: including PC terminal, main control module, audio processing modules and sound
Frequency conversion module is connected between the PC terminal and main control module by network communication, and audio processing modules are by several IO
Processing card composition, is connected between each I O process card and main control module, the audio processing modules and main control module it
Between connected by CPCI interface, the audio conversion module includes analogue audio frequency conversion module card, AES audio transition card and network
Audio transition card, each audio transition card respectively correspond one piece of I O process card, each audio transition card and corresponding I O process
It is connected between card by CPCI interface, the network audio conversion module includes Network Digital Audio Processor, flash storage
Device, voltage-controlled oscillating circuit, the first ethernet controller, the second ethernet controller, the first RJ-45 connector and the 2nd RJ-45 connect
Head, the Network Digital Audio Processor use CS181012 chip, and Network Digital Audio Processor is connected with CPCI interface,
The Network Digital Audio Processor is connected with voltage-controlled oscillating circuit, and the voltage-controlled oscillating circuit is connected with CPCI interface,
First ethernet controller and the second ethernet controller are connected with Network Digital Audio Processor, the 2nd RJ-45
Connector is connected with the first ethernet controller, and the second RJ-45 connector is connected with the first ethernet controller, the first Ethernet
Controller and the second ethernet controller and Network Digital Audio Processor are connected with flash memory.
2. network digital Audio Matrix according to claim 1, it is characterised in that: the main control module includes the first sound
Frequency matrix main control card and the second Audio Matrix main control card lead between the first Audio Matrix main control card and the second Audio Matrix main control card
CPCI interface is crossed to be connected.
3. network digital Audio Matrix according to claim 2, it is characterised in that: the I O process card and the first matrix master
It is connected between control card, between I O process the second matrix main control card of engaging using point-to-point mode.
4. network digital Audio Matrix according to claim 1, it is characterised in that: the AES audio transition card includes four
Block SRC4382 two way audio conversion chip and power module, the corresponding AES audio all the way of every piece of SRC4382 audio conversion chip are defeated
Enter end and output end, is connected with impedance between each road AES audio input end and output end and corresponding audio conversion chip
With isolation circuit, each piece of SRC4382 two way audio conversion chip and power module are connected with CPCI interface, the power supply
Module is powered by CPCI interface to SRC4382 two way audio conversion chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821595061.7U CN209250870U (en) | 2018-09-28 | 2018-09-28 | A kind of network digital Audio Matrix |
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| CN201821595061.7U CN209250870U (en) | 2018-09-28 | 2018-09-28 | A kind of network digital Audio Matrix |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113141561A (en) * | 2020-01-19 | 2021-07-20 | 神讯电脑(昆山)有限公司 | Device for realizing long-distance audio signal playing |
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2018
- 2018-09-28 CN CN201821595061.7U patent/CN209250870U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113141561A (en) * | 2020-01-19 | 2021-07-20 | 神讯电脑(昆山)有限公司 | Device for realizing long-distance audio signal playing |
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